./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memsetNonZero3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memsetNonZero3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 51393d639f010eae1b63625f7a13f75512f9f6892d9718dd03fa54720c8c54a0 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:02:57,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:02:57,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:02:57,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:02:57,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:02:57,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:02:57,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:02:57,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:02:57,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:02:57,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:02:57,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:02:57,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:02:57,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:02:57,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:02:57,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:02:57,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:02:57,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:02:57,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:02:57,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:02:57,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:02:57,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:02:57,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:02:57,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:02:57,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:02:57,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:02:57,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:02:57,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:02:57,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:02:57,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:02:57,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:02:57,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:02:57,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:02:57,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:02:57,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:02:57,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:02:57,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:02:57,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:02:57,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:02:57,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:02:57,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:02:57,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:02:57,122 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 09:02:57,153 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:02:57,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:02:57,154 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:02:57,154 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:02:57,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:02:57,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:02:57,157 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:02:57,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:02:57,158 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:02:57,158 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:02:57,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:02:57,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:02:57,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:02:57,160 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:02:57,161 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:02:57,161 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:02:57,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:02:57,162 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:02:57,163 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:02:57,163 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:02:57,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:02:57,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:02:57,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:02:57,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:02:57,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:02:57,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:02:57,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:02:57,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:02:57,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:02:57,168 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_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51393d639f010eae1b63625f7a13f75512f9f6892d9718dd03fa54720c8c54a0 [2021-10-28 09:02:57,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:02:57,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:02:57,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:02:57,491 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:02:57,492 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:02:57,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/ldv-memsafety/memsetNonZero3.c [2021-10-28 09:02:57,559 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/data/fa1cf535a/3f5384ac574041d492fbd986fa9b4d75/FLAGb7ceb455d [2021-10-28 09:02:58,204 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:02:58,205 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/sv-benchmarks/c/ldv-memsafety/memsetNonZero3.c [2021-10-28 09:02:58,224 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/data/fa1cf535a/3f5384ac574041d492fbd986fa9b4d75/FLAGb7ceb455d [2021-10-28 09:02:58,548 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/data/fa1cf535a/3f5384ac574041d492fbd986fa9b4d75 [2021-10-28 09:02:58,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:02:58,552 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:02:58,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:02:58,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:02:58,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:02:58,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:02:58" (1/1) ... [2021-10-28 09:02:58,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@326093ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:58, skipping insertion in model container [2021-10-28 09:02:58,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:02:58" (1/1) ... [2021-10-28 09:02:58,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:02:58,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:02:58,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:02:58,840 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:02:58,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:02:58,872 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:02:58,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:58 WrapperNode [2021-10-28 09:02:58,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:02:58,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:02:58,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:02:58,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:02:58,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:58" (1/1) ... [2021-10-28 09:02:58,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:58" (1/1) ... [2021-10-28 09:02:58,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:58" (1/1) ... [2021-10-28 09:02:58,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:58" (1/1) ... [2021-10-28 09:02:58,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:58" (1/1) ... [2021-10-28 09:02:58,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:58" (1/1) ... [2021-10-28 09:02:58,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:58" (1/1) ... [2021-10-28 09:02:58,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:02:58,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:02:58,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:02:58,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:02:58,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:58" (1/1) ... [2021-10-28 09:02:58,922 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:02:58,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:02:58,951 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:02:58,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:02:59,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:02:59,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:02:59,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:02:59,010 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-28 09:02:59,011 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-28 09:02:59,011 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:02:59,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:02:59,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-28 09:02:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:02:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:02:59,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:02:59,138 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 09:02:59,192 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:02:59,193 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-28 09:02:59,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:02:59 BoogieIcfgContainer [2021-10-28 09:02:59,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:02:59,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:02:59,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:02:59,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:02:59,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:02:58" (1/3) ... [2021-10-28 09:02:59,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1e64ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:02:59, skipping insertion in model container [2021-10-28 09:02:59,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:02:58" (2/3) ... [2021-10-28 09:02:59,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d1e64ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:02:59, skipping insertion in model container [2021-10-28 09:02:59,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:02:59" (3/3) ... [2021-10-28 09:02:59,204 INFO L111 eAbstractionObserver]: Analyzing ICFG memsetNonZero3.c [2021-10-28 09:02:59,210 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:02:59,210 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-28 09:02:59,258 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:02:59,266 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-10-28 09:02:59,266 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 09:02:59,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:02:59,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:02:59,291 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:02:59,292 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:02:59,292 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:02:59,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:59,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2021-10-28 09:02:59,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:59,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839649878] [2021-10-28 09:02:59,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:59,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:59,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:02:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:59,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:02:59,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:02:59,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839649878] [2021-10-28 09:02:59,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839649878] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:02:59,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:02:59,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:02:59,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787175508] [2021-10-28 09:02:59,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:02:59,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:02:59,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:02:59,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:02:59,680 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:02:59,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:02:59,804 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-28 09:02:59,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:02:59,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 09:02:59,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:02:59,815 INFO L225 Difference]: With dead ends: 19 [2021-10-28 09:02:59,815 INFO L226 Difference]: Without dead ends: 16 [2021-10-28 09:02:59,818 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:02:59,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-28 09:02:59,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-28 09:02:59,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:02:59,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-28 09:02:59,857 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2021-10-28 09:02:59,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:02:59,858 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-28 09:02:59,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:02:59,859 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-28 09:02:59,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:02:59,860 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:02:59,860 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:02:59,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:02:59,861 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:02:59,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:02:59,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2021-10-28 09:02:59,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:02:59,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917860129] [2021-10-28 09:02:59,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:02:59,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:02:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:02:59,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:02:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:00,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:00,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:00,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917860129] [2021-10-28 09:03:00,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917860129] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:03:00,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:03:00,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:03:00,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462408464] [2021-10-28 09:03:00,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:03:00,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:00,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:03:00,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:03:00,015 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:03:00,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:00,053 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-10-28 09:03:00,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:03:00,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-10-28 09:03:00,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:00,055 INFO L225 Difference]: With dead ends: 15 [2021-10-28 09:03:00,056 INFO L226 Difference]: Without dead ends: 15 [2021-10-28 09:03:00,057 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:03:00,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-28 09:03:00,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-28 09:03:00,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:03:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-28 09:03:00,066 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2021-10-28 09:03:00,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:00,067 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-28 09:03:00,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:03:00,068 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-28 09:03:00,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 09:03:00,069 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:00,069 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:00,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:03:00,070 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr2ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:03:00,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:00,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1462327129, now seen corresponding path program 1 times [2021-10-28 09:03:00,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:00,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432911302] [2021-10-28 09:03:00,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:00,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:00,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:03:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:00,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:03:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:00,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:00,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:00,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432911302] [2021-10-28 09:03:00,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432911302] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:03:00,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:03:00,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:03:00,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349923167] [2021-10-28 09:03:00,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:03:00,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:00,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:03:00,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:03:00,212 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:03:00,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:00,285 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-28 09:03:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:03:00,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-10-28 09:03:00,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:00,288 INFO L225 Difference]: With dead ends: 18 [2021-10-28 09:03:00,288 INFO L226 Difference]: Without dead ends: 16 [2021-10-28 09:03:00,288 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:03:00,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-28 09:03:00,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-28 09:03:00,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:03:00,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-28 09:03:00,294 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2021-10-28 09:03:00,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:00,295 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-28 09:03:00,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:03:00,296 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-28 09:03:00,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 09:03:00,297 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:00,298 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:00,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:03:00,299 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr2ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:03:00,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:00,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1971150090, now seen corresponding path program 1 times [2021-10-28 09:03:00,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:00,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218558922] [2021-10-28 09:03:00,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:00,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:00,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:03:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:00,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:03:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:00,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:00,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:00,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218558922] [2021-10-28 09:03:00,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218558922] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:00,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758499361] [2021-10-28 09:03:00,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:00,444 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:00,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:00,446 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:00,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:03:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:00,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:03:00,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:00,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758499361] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:00,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:03:00,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2021-10-28 09:03:00,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421254922] [2021-10-28 09:03:00,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:03:00,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:00,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:03:00,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:03:00,671 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:03:00,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:00,746 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-28 09:03:00,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:03:00,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-10-28 09:03:00,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:00,748 INFO L225 Difference]: With dead ends: 19 [2021-10-28 09:03:00,748 INFO L226 Difference]: Without dead ends: 17 [2021-10-28 09:03:00,749 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:03:00,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-28 09:03:00,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-28 09:03:00,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:03:00,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-28 09:03:00,752 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2021-10-28 09:03:00,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:00,753 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-28 09:03:00,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:03:00,753 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-28 09:03:00,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:03:00,754 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:03:00,754 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:00,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:00,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:00,969 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr2ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:03:00,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:00,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1034761479, now seen corresponding path program 2 times [2021-10-28 09:03:00,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:00,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063914055] [2021-10-28 09:03:00,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:00,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:01,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:03:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:01,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:03:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:01,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:01,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063914055] [2021-10-28 09:03:01,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063914055] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:03:01,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630293035] [2021-10-28 09:03:01,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:03:01,116 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:01,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:01,117 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:03:01,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:03:01,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:03:01,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:03:01,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:03:01,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:03:01,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-10-28 09:03:01,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:03:01,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630293035] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:03:01,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:03:01,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2021-10-28 09:03:01,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49427431] [2021-10-28 09:03:01,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:03:01,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:01,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:03:01,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:03:01,535 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:03:01,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:01,610 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-10-28 09:03:01,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:03:01,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2021-10-28 09:03:01,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:03:01,612 INFO L225 Difference]: With dead ends: 16 [2021-10-28 09:03:01,612 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 09:03:01,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:03:01,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 09:03:01,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 09:03:01,622 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) [2021-10-28 09:03:01,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 09:03:01,623 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-28 09:03:01,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:03:01,623 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:03:01,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:03:01,624 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:03:01,624 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 09:03:01,627 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION [2021-10-28 09:03:01,627 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION [2021-10-28 09:03:01,628 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:03:01,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:03:01,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:03:01,844 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2021-10-28 09:03:01,847 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:03:01,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:03:01 BoogieIcfgContainer [2021-10-28 09:03:01,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:03:01,853 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:03:01,854 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:03:01,854 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:03:01,854 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:02:59" (3/4) ... [2021-10-28 09:03:01,859 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:03:01,866 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-28 09:03:01,867 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset [2021-10-28 09:03:01,867 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-28 09:03:01,875 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-28 09:03:01,875 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-28 09:03:01,876 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-28 09:03:01,876 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-28 09:03:01,929 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:03:01,935 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:03:01,937 INFO L168 Benchmark]: Toolchain (without parser) took 3383.52 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 50.1 MB in the beginning and 54.1 MB in the end (delta: -3.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:01,938 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory is still 66.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:03:01,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.81 ms. Allocated memory is still 90.2 MB. Free memory was 49.9 MB in the beginning and 67.0 MB in the end (delta: -17.1 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:01,944 INFO L168 Benchmark]: Boogie Preprocessor took 35.24 ms. Allocated memory is still 90.2 MB. Free memory was 67.0 MB in the beginning and 65.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:03:01,946 INFO L168 Benchmark]: RCFGBuilder took 284.77 ms. Allocated memory is still 90.2 MB. Free memory was 65.7 MB in the beginning and 56.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:01,947 INFO L168 Benchmark]: TraceAbstraction took 2653.65 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 56.3 MB in the beginning and 56.2 MB in the end (delta: 52.3 kB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:01,950 INFO L168 Benchmark]: Witness Printer took 81.97 ms. Allocated memory is still 109.1 MB. Free memory was 56.2 MB in the beginning and 54.1 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:03:01,952 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory is still 66.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 318.81 ms. Allocated memory is still 90.2 MB. Free memory was 49.9 MB in the beginning and 67.0 MB in the end (delta: -17.1 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.24 ms. Allocated memory is still 90.2 MB. Free memory was 67.0 MB in the beginning and 65.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 284.77 ms. Allocated memory is still 90.2 MB. Free memory was 65.7 MB in the beginning and 56.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2653.65 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 56.3 MB in the beginning and 56.2 MB in the end (delta: 52.3 kB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * Witness Printer took 81.97 ms. Allocated memory is still 109.1 MB. Free memory was 56.2 MB in the beginning and 54.1 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 25]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 36 SDslu, 66 SDs, 0 SdLazy, 131 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 90 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 83 ConstructedInterpolants, 8 QuantifiedInterpolants, 246 SizeOfPredicates, 2 NumberOfNonLiveVariables, 137 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 3/8 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 09:03:02,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33ba5909-b114-4bf1-84f5-4244651e0c47/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...