./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memset3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memset3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 06914024aa49a34ce88c7dcbc25f89730c27c8e4 ....................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memset3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 06914024aa49a34ce88c7dcbc25f89730c27c8e4 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:08:19,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:08:19,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:08:19,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:08:19,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:08:19,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:08:19,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:08:19,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:08:19,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:08:19,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:08:19,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:08:19,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:08:19,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:08:19,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:08:19,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:08:19,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:08:19,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:08:19,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:08:19,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:08:19,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:08:19,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:08:19,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:08:19,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:08:19,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:08:19,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:08:19,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:08:19,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:08:19,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:08:19,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:08:19,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:08:19,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:08:19,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:08:19,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:08:19,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:08:19,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:08:19,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:08:19,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:08:19,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:08:19,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:08:19,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:08:19,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:08:19,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-16 02:08:19,840 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:08:19,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:08:19,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:08:19,842 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:08:19,842 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:08:19,842 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:08:19,843 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:08:19,843 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:08:19,843 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:08:19,843 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:08:19,844 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:08:19,844 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:08:19,844 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:08:19,844 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:08:19,845 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:08:19,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 02:08:19,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 02:08:19,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:08:19,846 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:08:19,847 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:08:19,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:08:19,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:08:19,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:08:19,848 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 02:08:19,848 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 02:08:19,848 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 02:08:19,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:08:19,849 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:08:19,849 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:08:19,849 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:08:19,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:08:19,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:08:19,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:08:19,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:08:19,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:08:19,851 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:08:19,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:08:19,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:08:19,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:08:19,852 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06914024aa49a34ce88c7dcbc25f89730c27c8e4 [2021-10-16 02:08:20,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:08:20,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:08:20,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:08:20,133 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:08:20,134 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:08:20,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/ldv-memsafety/memset3.c [2021-10-16 02:08:20,212 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/data/834a7d209/4974540777d54708b9f939afcf3e8acd/FLAG5af6736d5 [2021-10-16 02:08:20,792 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:08:20,793 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/sv-benchmarks/c/ldv-memsafety/memset3.c [2021-10-16 02:08:20,805 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/data/834a7d209/4974540777d54708b9f939afcf3e8acd/FLAG5af6736d5 [2021-10-16 02:08:21,138 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/data/834a7d209/4974540777d54708b9f939afcf3e8acd [2021-10-16 02:08:21,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:08:21,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:08:21,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:08:21,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:08:21,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:08:21,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:08:21" (1/1) ... [2021-10-16 02:08:21,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fee10fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:21, skipping insertion in model container [2021-10-16 02:08:21,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:08:21" (1/1) ... [2021-10-16 02:08:21,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:08:21,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:08:21,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:08:21,377 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:08:21,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:08:21,413 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:08:21,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:21 WrapperNode [2021-10-16 02:08:21,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:08:21,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:08:21,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:08:21,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:08:21,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:21" (1/1) ... [2021-10-16 02:08:21,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:21" (1/1) ... [2021-10-16 02:08:21,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:08:21,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:08:21,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:08:21,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:08:21,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:21" (1/1) ... [2021-10-16 02:08:21,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:21" (1/1) ... [2021-10-16 02:08:21,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:21" (1/1) ... [2021-10-16 02:08:21,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:21" (1/1) ... [2021-10-16 02:08:21,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:21" (1/1) ... [2021-10-16 02:08:21,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:21" (1/1) ... [2021-10-16 02:08:21,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:21" (1/1) ... [2021-10-16 02:08:21,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:08:21,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:08:21,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:08:21,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:08:21,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:21" (1/1) ... [2021-10-16 02:08:21,488 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:08:21,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:08:21,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:08:21,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:08:21,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:08:21,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:08:21,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:08:21,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:08:21,812 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:08:21,812 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-16 02:08:21,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:08:21 BoogieIcfgContainer [2021-10-16 02:08:21,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:08:21,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:08:21,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:08:21,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:08:21,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:08:21" (1/3) ... [2021-10-16 02:08:21,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d1f50a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:08:21, skipping insertion in model container [2021-10-16 02:08:21,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:21" (2/3) ... [2021-10-16 02:08:21,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d1f50a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:08:21, skipping insertion in model container [2021-10-16 02:08:21,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:08:21" (3/3) ... [2021-10-16 02:08:21,826 INFO L111 eAbstractionObserver]: Analyzing ICFG memset3.c [2021-10-16 02:08:21,832 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:08:21,833 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-16 02:08:21,885 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:08:21,893 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, mConcurrency=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 [2021-10-16 02:08:21,893 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-16 02:08:21,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 5 states have (on average 1.8) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:21,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-16 02:08:21,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:21,917 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-16 02:08:21,918 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:08:21,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:21,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1553, now seen corresponding path program 1 times [2021-10-16 02:08:21,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:21,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270304141] [2021-10-16 02:08:21,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:21,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:22,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:22,143 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:22,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270304141] [2021-10-16 02:08:22,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270304141] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:22,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:22,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:08:22,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940264563] [2021-10-16 02:08:22,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:08:22,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:22,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:08:22,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:22,190 INFO L87 Difference]: Start difference. First operand has 9 states, 5 states have (on average 1.8) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-16 02:08:22,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:22,250 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2021-10-16 02:08:22,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:08:22,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-10-16 02:08:22,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:22,263 INFO L225 Difference]: With dead ends: 8 [2021-10-16 02:08:22,264 INFO L226 Difference]: Without dead ends: 7 [2021-10-16 02:08:22,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:22,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-16 02:08:22,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-16 02:08:22,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:22,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-16 02:08:22,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 2 [2021-10-16 02:08:22,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:22,305 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-16 02:08:22,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-16 02:08:22,305 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-16 02:08:22,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 02:08:22,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:22,306 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 02:08:22,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:08:22,307 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:08:22,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:22,312 INFO L82 PathProgramCache]: Analyzing trace with hash 48179, now seen corresponding path program 1 times [2021-10-16 02:08:22,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:22,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359911127] [2021-10-16 02:08:22,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:22,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:22,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:22,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:22,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359911127] [2021-10-16 02:08:22,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359911127] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:22,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:22,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:08:22,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846947097] [2021-10-16 02:08:22,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:08:22,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:22,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:08:22,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:22,454 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-10-16 02:08:22,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:22,479 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2021-10-16 02:08:22,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:08:22,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-10-16 02:08:22,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:22,480 INFO L225 Difference]: With dead ends: 6 [2021-10-16 02:08:22,480 INFO L226 Difference]: Without dead ends: 6 [2021-10-16 02:08:22,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:22,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-10-16 02:08:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-10-16 02:08:22,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) [2021-10-16 02:08:22,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2021-10-16 02:08:22,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 3 [2021-10-16 02:08:22,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:22,484 INFO L470 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-10-16 02:08:22,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-10-16 02:08:22,485 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2021-10-16 02:08:22,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:08:22,486 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:22,486 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:08:22,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:08:22,487 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:08:22,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:22,487 INFO L82 PathProgramCache]: Analyzing trace with hash 46301616, now seen corresponding path program 1 times [2021-10-16 02:08:22,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:22,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995325495] [2021-10-16 02:08:22,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:22,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:22,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:22,534 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:22,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995325495] [2021-10-16 02:08:22,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995325495] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:22,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:22,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:08:22,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582480368] [2021-10-16 02:08:22,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:08:22,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:08:22,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:08:22,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:08:22,537 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-16 02:08:22,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:22,551 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2021-10-16 02:08:22,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:08:22,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-10-16 02:08:22,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:22,552 INFO L225 Difference]: With dead ends: 7 [2021-10-16 02:08:22,553 INFO L226 Difference]: Without dead ends: 7 [2021-10-16 02:08:22,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:08:22,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-16 02:08:22,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-16 02:08:22,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:22,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-16 02:08:22,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-10-16 02:08:22,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:22,557 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-16 02:08:22,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-16 02:08:22,557 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-16 02:08:22,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:08:22,558 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:22,558 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:08:22,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:08:22,559 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:08:22,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:22,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1435340626, now seen corresponding path program 1 times [2021-10-16 02:08:22,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:08:22,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514907897] [2021-10-16 02:08:22,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:22,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:08:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:22,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:22,668 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:08:22,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514907897] [2021-10-16 02:08:22,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514907897] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:08:22,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587928832] [2021-10-16 02:08:22,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:22,673 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:08:22,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:08:22,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:08:22,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:08:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:22,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:08:22,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:22,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:22,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:22,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:22,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587928832] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:08:22,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [638312550] [2021-10-16 02:08:22,936 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-16 02:08:22,936 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:08:22,942 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:08:22,948 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:08:22,949 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:08:22,984 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:08:22,989 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:08:22,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:08:22,990 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-10-16 02:08:22,991 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:08:22,991 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:08:22,992 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-10-16 02:08:22,995 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-10-16 02:08:23,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:08:23,039 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:08:23,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-16 02:08:23,041 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:08:23,041 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-16 02:08:23,042 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:08:23,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:08:23,062 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:08:23,064 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:08:23,066 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-16 02:08:23,067 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:08:23,067 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:61, output treesize:60 [2021-10-16 02:08:23,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:23,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:08:23,293 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_9| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 02:08:23,297 INFO L168 Benchmark]: Toolchain (without parser) took 2153.55 ms. Allocated memory is still 134.2 MB. Free memory was 96.4 MB in the beginning and 48.5 MB in the end (delta: 47.9 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:23,298 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 134.2 MB. Free memory was 107.9 MB in the beginning and 107.8 MB in the end (delta: 29.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:08:23,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.95 ms. Allocated memory is still 134.2 MB. Free memory was 96.2 MB in the beginning and 108.0 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:23,299 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.93 ms. Allocated memory is still 134.2 MB. Free memory was 108.0 MB in the beginning and 106.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:23,300 INFO L168 Benchmark]: Boogie Preprocessor took 22.97 ms. Allocated memory is still 134.2 MB. Free memory was 106.5 MB in the beginning and 105.8 MB in the end (delta: 650.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:08:23,304 INFO L168 Benchmark]: RCFGBuilder took 338.05 ms. Allocated memory is still 134.2 MB. Free memory was 105.2 MB in the beginning and 95.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:23,307 INFO L168 Benchmark]: TraceAbstraction took 1478.62 ms. Allocated memory is still 134.2 MB. Free memory was 95.4 MB in the beginning and 48.5 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:23,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 134.2 MB. Free memory was 107.9 MB in the beginning and 107.8 MB in the end (delta: 29.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 268.95 ms. Allocated memory is still 134.2 MB. Free memory was 96.2 MB in the beginning and 108.0 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.93 ms. Allocated memory is still 134.2 MB. Free memory was 108.0 MB in the beginning and 106.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.97 ms. Allocated memory is still 134.2 MB. Free memory was 106.5 MB in the beginning and 105.8 MB in the end (delta: 650.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 338.05 ms. Allocated memory is still 134.2 MB. Free memory was 105.2 MB in the beginning and 95.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1478.62 ms. Allocated memory is still 134.2 MB. Free memory was 95.4 MB in the beginning and 48.5 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_9| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_9|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:08:23,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:08:25,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:08:25,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:08:26,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:08:26,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:08:26,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:08:26,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:08:26,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:08:26,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:08:26,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:08:26,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:08:26,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:08:26,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:08:26,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:08:26,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:08:26,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:08:26,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:08:26,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:08:26,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:08:26,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:08:26,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:08:26,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:08:26,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:08:26,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:08:26,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:08:26,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:08:26,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:08:26,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:08:26,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:08:26,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:08:26,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:08:26,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:08:26,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:08:26,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:08:26,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:08:26,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:08:26,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:08:26,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:08:26,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:08:26,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:08:26,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:08:26,119 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-16 02:08:26,149 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:08:26,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:08:26,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:08:26,150 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:08:26,150 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:08:26,151 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:08:26,151 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:08:26,151 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:08:26,151 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:08:26,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 02:08:26,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 02:08:26,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:08:26,153 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:08:26,153 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:08:26,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:08:26,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:08:26,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:08:26,154 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 02:08:26,154 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 02:08:26,154 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 02:08:26,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:08:26,155 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:08:26,155 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:08:26,155 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:08:26,155 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:08:26,155 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:08:26,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:08:26,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:08:26,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:08:26,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:08:26,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:08:26,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:08:26,157 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:08:26,157 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:08:26,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:08:26,158 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:08:26,158 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06914024aa49a34ce88c7dcbc25f89730c27c8e4 [2021-10-16 02:08:26,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:08:26,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:08:26,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:08:26,661 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:08:26,662 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:08:26,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/ldv-memsafety/memset3.c [2021-10-16 02:08:26,749 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/data/2957642eb/8cc15972ef32485c8a038a13dc381c76/FLAGab510b5ec [2021-10-16 02:08:27,242 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:08:27,242 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/sv-benchmarks/c/ldv-memsafety/memset3.c [2021-10-16 02:08:27,248 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/data/2957642eb/8cc15972ef32485c8a038a13dc381c76/FLAGab510b5ec [2021-10-16 02:08:27,608 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/data/2957642eb/8cc15972ef32485c8a038a13dc381c76 [2021-10-16 02:08:27,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:08:27,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:08:27,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:08:27,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:08:27,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:08:27,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:08:27" (1/1) ... [2021-10-16 02:08:27,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e62d1ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:27, skipping insertion in model container [2021-10-16 02:08:27,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:08:27" (1/1) ... [2021-10-16 02:08:27,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:08:27,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:08:27,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:08:27,835 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:08:27,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:08:27,869 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:08:27,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:27 WrapperNode [2021-10-16 02:08:27,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:08:27,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:08:27,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:08:27,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:08:27,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:27" (1/1) ... [2021-10-16 02:08:27,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:27" (1/1) ... [2021-10-16 02:08:27,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:08:27,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:08:27,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:08:27,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:08:27,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:27" (1/1) ... [2021-10-16 02:08:27,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:27" (1/1) ... [2021-10-16 02:08:27,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:27" (1/1) ... [2021-10-16 02:08:27,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:27" (1/1) ... [2021-10-16 02:08:27,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:27" (1/1) ... [2021-10-16 02:08:27,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:27" (1/1) ... [2021-10-16 02:08:27,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:27" (1/1) ... [2021-10-16 02:08:27,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:08:27,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:08:27,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:08:27,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:08:27,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:27" (1/1) ... [2021-10-16 02:08:27,994 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:08:28,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:08:28,030 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:08:28,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:08:28,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:08:28,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:08:28,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:08:28,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:08:28,377 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:08:28,378 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-16 02:08:28,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:08:28 BoogieIcfgContainer [2021-10-16 02:08:28,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:08:28,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:08:28,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:08:28,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:08:28,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:08:27" (1/3) ... [2021-10-16 02:08:28,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156d3539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:08:28, skipping insertion in model container [2021-10-16 02:08:28,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:08:27" (2/3) ... [2021-10-16 02:08:28,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156d3539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:08:28, skipping insertion in model container [2021-10-16 02:08:28,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:08:28" (3/3) ... [2021-10-16 02:08:28,399 INFO L111 eAbstractionObserver]: Analyzing ICFG memset3.c [2021-10-16 02:08:28,405 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:08:28,405 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-16 02:08:28,454 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:08:28,462 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, mConcurrency=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 [2021-10-16 02:08:28,462 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-16 02:08:28,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 8 states have (on average 1.5) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:28,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 02:08:28,512 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:28,512 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 02:08:28,513 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:08:28,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:28,519 INFO L82 PathProgramCache]: Analyzing trace with hash 29856, now seen corresponding path program 1 times [2021-10-16 02:08:28,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:08:28,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855329125] [2021-10-16 02:08:28,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:28,554 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:08:28,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:08:28,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:08:28,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:08:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:28,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:08:28,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:28,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:08:28,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:28,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:28,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:28,863 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:08:28,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855329125] [2021-10-16 02:08:28,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855329125] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:28,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:28,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:08:28,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859705017] [2021-10-16 02:08:28,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:08:28,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:08:28,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:08:28,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:28,902 INFO L87 Difference]: Start difference. First operand has 12 states, 8 states have (on average 1.5) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-10-16 02:08:28,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:28,947 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-10-16 02:08:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:08:28,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-10-16 02:08:28,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:28,959 INFO L225 Difference]: With dead ends: 11 [2021-10-16 02:08:28,959 INFO L226 Difference]: Without dead ends: 9 [2021-10-16 02:08:28,961 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:08:28,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-16 02:08:28,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-16 02:08:28,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:28,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-16 02:08:28,994 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 3 [2021-10-16 02:08:28,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:28,994 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-16 02:08:28,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-10-16 02:08:28,995 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-16 02:08:28,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:08:28,996 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:28,996 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:08:29,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:29,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:08:29,209 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:08:29,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:29,210 INFO L82 PathProgramCache]: Analyzing trace with hash 925572, now seen corresponding path program 1 times [2021-10-16 02:08:29,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:08:29,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393716499] [2021-10-16 02:08:29,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:29,211 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:08:29,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:08:29,212 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:08:29,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:08:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:29,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:08:29,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:29,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:08:29,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:29,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:29,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:29,464 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:08:29,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393716499] [2021-10-16 02:08:29,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393716499] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:29,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:29,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:08:29,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768967192] [2021-10-16 02:08:29,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:08:29,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:08:29,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:08:29,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:08:29,469 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:29,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:29,485 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2021-10-16 02:08:29,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:08:29,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-16 02:08:29,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:29,486 INFO L225 Difference]: With dead ends: 8 [2021-10-16 02:08:29,486 INFO L226 Difference]: Without dead ends: 8 [2021-10-16 02:08:29,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:08:29,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-16 02:08:29,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-16 02:08:29,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:29,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-16 02:08:29,489 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2021-10-16 02:08:29,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:29,490 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-16 02:08:29,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:29,490 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-16 02:08:29,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:08:29,491 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:29,491 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:29,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:29,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:08:29,704 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:08:29,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:29,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1803953449, now seen corresponding path program 1 times [2021-10-16 02:08:29,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:08:29,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017646405] [2021-10-16 02:08:29,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:29,706 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:08:29,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:08:29,707 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:08:29,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:08:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:29,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:08:29,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:29,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:29,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:29,887 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:08:29,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017646405] [2021-10-16 02:08:29,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017646405] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:29,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:29,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:08:29,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308413086] [2021-10-16 02:08:29,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:08:29,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:08:29,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:08:29,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:08:29,890 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2021-10-16 02:08:29,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:29,937 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-10-16 02:08:29,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:08:29,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-16 02:08:29,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:29,939 INFO L225 Difference]: With dead ends: 10 [2021-10-16 02:08:29,939 INFO L226 Difference]: Without dead ends: 10 [2021-10-16 02:08:29,939 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 34.4ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:08:29,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-16 02:08:29,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-16 02:08:29,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:29,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-16 02:08:29,942 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2021-10-16 02:08:29,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:29,943 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-16 02:08:29,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2021-10-16 02:08:29,943 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-16 02:08:29,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:08:29,944 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:29,944 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:29,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:30,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:08:30,156 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:08:30,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:30,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1569492695, now seen corresponding path program 1 times [2021-10-16 02:08:30,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:08:30,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191520504] [2021-10-16 02:08:30,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:30,159 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:08:30,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:08:30,163 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:08:30,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:08:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:30,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:08:30,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:30,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:30,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:30,539 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:08:30,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191520504] [2021-10-16 02:08:30,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191520504] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:08:30,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1504534937] [2021-10-16 02:08:30,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:30,540 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:08:30,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:08:30,547 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:08:30,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-16 02:08:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:30,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:08:30,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:30,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:30,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:30,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1504534937] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:08:30,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972258087] [2021-10-16 02:08:30,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:08:30,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:08:30,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:08:30,808 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:08:30,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-16 02:08:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:08:30,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:08:30,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:30,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:30,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:08:31,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972258087] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:08:31,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:08:31,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-10-16 02:08:31,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145193916] [2021-10-16 02:08:31,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:08:31,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:08:31,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:08:31,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:08:31,042 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:31,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:31,182 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-16 02:08:31,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-16 02:08:31,183 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-16 02:08:31,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:31,183 INFO L225 Difference]: With dead ends: 14 [2021-10-16 02:08:31,183 INFO L226 Difference]: Without dead ends: 14 [2021-10-16 02:08:31,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 225.4ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:08:31,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-16 02:08:31,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-16 02:08:31,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:31,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-16 02:08:31,187 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 9 [2021-10-16 02:08:31,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:31,187 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-16 02:08:31,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:31,188 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-16 02:08:31,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 02:08:31,188 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:08:31,189 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:08:31,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:31,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:31,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:31,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:08:31,790 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:08:31,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:08:31,790 INFO L82 PathProgramCache]: Analyzing trace with hash -89847511, now seen corresponding path program 2 times [2021-10-16 02:08:31,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:08:31,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691316086] [2021-10-16 02:08:31,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:08:31,791 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:08:31,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:08:31,792 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:08:31,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:08:31,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-16 02:08:31,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:08:31,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:08:31,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:08:31,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-16 02:08:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-16 02:08:32,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:08:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-16 02:08:32,144 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:08:32,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691316086] [2021-10-16 02:08:32,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691316086] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:08:32,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:08:32,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-16 02:08:32,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675972472] [2021-10-16 02:08:32,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:08:32,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:08:32,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:08:32,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:08:32,147 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:32,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:08:32,205 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-16 02:08:32,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:08:32,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-16 02:08:32,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:08:32,208 INFO L225 Difference]: With dead ends: 13 [2021-10-16 02:08:32,208 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:08:32,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 61.7ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:08:32,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:08:32,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:08:32,209 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) [2021-10-16 02:08:32,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:08:32,209 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-16 02:08:32,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:08:32,209 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:08:32,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:08:32,210 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:08:32,210 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:08:32,213 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-16 02:08:32,213 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-16 02:08:32,214 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:08:32,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:08:32,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:08:32,428 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:08:32,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:08:32 BoogieIcfgContainer [2021-10-16 02:08:32,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:08:32,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:08:32,431 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:08:32,431 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:08:32,431 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:08:28" (3/4) ... [2021-10-16 02:08:32,435 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:08:32,446 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-16 02:08:32,447 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-16 02:08:32,447 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:08:32,447 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:08:32,480 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:08:32,480 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:08:32,482 INFO L168 Benchmark]: Toolchain (without parser) took 4869.03 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 41.7 MB in the beginning and 41.3 MB in the end (delta: 413.9 kB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:32,483 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 60.8 MB. Free memory was 43.0 MB in the beginning and 43.0 MB in the end (delta: 50.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:08:32,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.19 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 32.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:32,484 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.49 ms. Allocated memory is still 60.8 MB. Free memory was 32.5 MB in the beginning and 45.3 MB in the end (delta: -12.8 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:32,485 INFO L168 Benchmark]: Boogie Preprocessor took 41.52 ms. Allocated memory is still 60.8 MB. Free memory was 45.3 MB in the beginning and 44.4 MB in the end (delta: 940.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:08:32,485 INFO L168 Benchmark]: RCFGBuilder took 431.33 ms. Allocated memory is still 60.8 MB. Free memory was 44.2 MB in the beginning and 35.7 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:32,486 INFO L168 Benchmark]: TraceAbstraction took 4038.93 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 35.2 MB in the beginning and 43.3 MB in the end (delta: -8.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:32,487 INFO L168 Benchmark]: Witness Printer took 49.83 ms. Allocated memory is still 81.8 MB. Free memory was 43.3 MB in the beginning and 41.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:08:32,490 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 60.8 MB. Free memory was 43.0 MB in the beginning and 43.0 MB in the end (delta: 50.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 256.19 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 32.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.49 ms. Allocated memory is still 60.8 MB. Free memory was 32.5 MB in the beginning and 45.3 MB in the end (delta: -12.8 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.52 ms. Allocated memory is still 60.8 MB. Free memory was 45.3 MB in the beginning and 44.4 MB in the end (delta: 940.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 431.33 ms. Allocated memory is still 60.8 MB. Free memory was 44.2 MB in the beginning and 35.7 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4038.93 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 35.2 MB in the beginning and 43.3 MB in the end (delta: -8.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * Witness Printer took 49.83 ms. Allocated memory is still 81.8 MB. Free memory was 43.3 MB in the beginning and 41.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: 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 1 procedures, 12 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 3975.8ms, OverallIterations: 5, TraceHistogramMax: 6, EmptinessCheckTime: 40.5ms, AutomataDifference: 358.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 23 SDtfs, 29 SDslu, 33 SDs, 0 SdLazy, 63 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 138.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 391.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=4, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 25.9ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 55.7ms SsaConstructionTime, 123.4ms SatisfiabilityAnalysisTime, 1425.4ms InterpolantComputationTime, 54 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 94 ConstructedInterpolants, 1 QuantifiedInterpolants, 525 SizeOfPredicates, 14 NumberOfNonLiveVariables, 215 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 42/60 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! [2021-10-16 02:08:32,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0b2822cc-4a15-442b-bd1d-e0363fc87789/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...