./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-ext-properties/simple-ext.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f42606-d17a-40ba-9601-4810e464670f/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f42606-d17a-40ba-9601-4810e464670f/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f42606-d17a-40ba-9601-4810e464670f/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f42606-d17a-40ba-9601-4810e464670f/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/simple-ext.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f42606-d17a-40ba-9601-4810e464670f/bin/uautomizer-j4sWxH34Be/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f42606-d17a-40ba-9601-4810e464670f/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79d8454f49f42d774b494771accf13f0b47382db45ac5cfdb4c7afee633f8cd7 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:13:24,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:13:24,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:13:24,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:13:24,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:13:24,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:13:24,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:13:24,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:13:24,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:13:24,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:13:24,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:13:24,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:13:24,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:13:24,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:13:24,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:13:24,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:13:24,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:13:24,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:13:24,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:13:24,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:13:24,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:13:24,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:13:24,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:13:24,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:13:24,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:13:24,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:13:24,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:13:24,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:13:24,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:13:24,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:13:24,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:13:24,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:13:24,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:13:24,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:13:24,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:13:24,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:13:24,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:13:24,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:13:24,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:13:24,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:13:24,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:13:24,807 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f42606-d17a-40ba-9601-4810e464670f/bin/uautomizer-j4sWxH34Be/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-21 20:13:24,837 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:13:24,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:13:24,838 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:13:24,838 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:13:24,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:13:24,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:13:24,840 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:13:24,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:13:24,841 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:13:24,841 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:13:24,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:13:24,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:13:24,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:13:24,842 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 20:13:24,842 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 20:13:24,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:13:24,842 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 20:13:24,842 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:13:24,843 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:13:24,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:13:24,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:13:24,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:13:24,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:13:24,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:13:24,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:13:24,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:13:24,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:13:24,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:13:24,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f42606-d17a-40ba-9601-4810e464670f/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f42606-d17a-40ba-9601-4810e464670f/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79d8454f49f42d774b494771accf13f0b47382db45ac5cfdb4c7afee633f8cd7 [2021-10-21 20:13:25,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:13:25,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:13:25,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:13:25,192 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:13:25,194 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:13:25,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f42606-d17a-40ba-9601-4810e464670f/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/list-ext-properties/simple-ext.i [2021-10-21 20:13:25,282 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f42606-d17a-40ba-9601-4810e464670f/bin/uautomizer-j4sWxH34Be/data/34afdca35/82c54fe8fa414095b10b1ec2b294f32e/FLAGf02c3e045 [2021-10-21 20:13:25,901 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:13:25,902 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f42606-d17a-40ba-9601-4810e464670f/sv-benchmarks/c/list-ext-properties/simple-ext.i [2021-10-21 20:13:25,939 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f42606-d17a-40ba-9601-4810e464670f/bin/uautomizer-j4sWxH34Be/data/34afdca35/82c54fe8fa414095b10b1ec2b294f32e/FLAGf02c3e045 [2021-10-21 20:13:26,158 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f42606-d17a-40ba-9601-4810e464670f/bin/uautomizer-j4sWxH34Be/data/34afdca35/82c54fe8fa414095b10b1ec2b294f32e [2021-10-21 20:13:26,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:13:26,164 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 20:13:26,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:13:26,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:13:26,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:13:26,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:13:26" (1/1) ... [2021-10-21 20:13:26,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191dbc2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:26, skipping insertion in model container [2021-10-21 20:13:26,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:13:26" (1/1) ... [2021-10-21 20:13:26,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:13:26,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:13:26,645 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f42606-d17a-40ba-9601-4810e464670f/sv-benchmarks/c/list-ext-properties/simple-ext.i[23272,23285] [2021-10-21 20:13:26,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:13:26,662 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:13:26,709 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f42606-d17a-40ba-9601-4810e464670f/sv-benchmarks/c/list-ext-properties/simple-ext.i[23272,23285] [2021-10-21 20:13:26,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:13:26,750 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:13:26,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:26 WrapperNode [2021-10-21 20:13:26,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:13:26,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:13:26,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:13:26,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:13:26,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:26" (1/1) ... [2021-10-21 20:13:26,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:26" (1/1) ... [2021-10-21 20:13:26,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:26" (1/1) ... [2021-10-21 20:13:26,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:26" (1/1) ... [2021-10-21 20:13:26,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:26" (1/1) ... [2021-10-21 20:13:26,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:26" (1/1) ... [2021-10-21 20:13:26,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:26" (1/1) ... [2021-10-21 20:13:26,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:13:26,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:13:26,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:13:26,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:13:26,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:26" (1/1) ... [2021-10-21 20:13:26,838 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:13:26,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f42606-d17a-40ba-9601-4810e464670f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:13:26,866 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f42606-d17a-40ba-9601-4810e464670f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:13:26,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f42606-d17a-40ba-9601-4810e464670f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:13:26,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 20:13:26,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:13:26,922 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-21 20:13:26,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 20:13:26,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 20:13:26,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 20:13:26,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 20:13:26,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 20:13:26,923 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-21 20:13:26,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 20:13:26,923 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 20:13:26,924 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-21 20:13:26,924 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-21 20:13:26,924 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-21 20:13:26,924 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-21 20:13:26,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:13:26,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 20:13:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 20:13:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 20:13:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 20:13:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 20:13:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 20:13:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 20:13:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 20:13:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 20:13:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 20:13:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 20:13:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 20:13:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 20:13:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 20:13:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 20:13:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 20:13:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 20:13:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 20:13:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 20:13:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 20:13:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 20:13:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 20:13:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 20:13:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 20:13:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 20:13:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 20:13:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 20:13:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 20:13:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 20:13:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 20:13:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 20:13:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 20:13:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 20:13:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 20:13:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 20:13:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 20:13:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 20:13:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 20:13:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 20:13:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 20:13:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 20:13:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 20:13:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 20:13:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 20:13:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 20:13:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 20:13:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 20:13:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 20:13:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 20:13:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 20:13:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 20:13:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 20:13:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 20:13:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 20:13:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 20:13:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 20:13:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 20:13:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 20:13:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 20:13:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 20:13:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 20:13:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 20:13:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 20:13:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 20:13:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 20:13:26,936 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 20:13:26,936 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 20:13:26,936 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 20:13:26,936 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 20:13:26,936 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 20:13:26,936 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 20:13:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 20:13:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 20:13:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 20:13:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 20:13:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 20:13:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 20:13:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 20:13:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 20:13:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 20:13:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 20:13:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 20:13:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 20:13:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 20:13:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 20:13:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 20:13:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 20:13:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 20:13:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 20:13:26,940 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 20:13:26,940 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 20:13:26,940 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 20:13:26,940 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 20:13:26,940 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 20:13:26,940 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 20:13:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 20:13:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 20:13:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 20:13:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 20:13:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 20:13:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 20:13:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 20:13:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 20:13:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 20:13:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 20:13:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 20:13:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 20:13:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-21 20:13:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 20:13:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 20:13:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 20:13:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 20:13:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 20:13:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 20:13:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:13:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 20:13:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:13:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:13:27,316 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-21 20:13:27,593 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:13:27,593 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-21 20:13:27,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:13:27 BoogieIcfgContainer [2021-10-21 20:13:27,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:13:27,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:13:27,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:13:27,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:13:27,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:13:26" (1/3) ... [2021-10-21 20:13:27,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5457dfb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:13:27, skipping insertion in model container [2021-10-21 20:13:27,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:13:26" (2/3) ... [2021-10-21 20:13:27,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5457dfb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:13:27, skipping insertion in model container [2021-10-21 20:13:27,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:13:27" (3/3) ... [2021-10-21 20:13:27,607 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-ext.i [2021-10-21 20:13:27,612 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:13:27,613 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2021-10-21 20:13:27,662 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:13:27,670 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:13:27,670 INFO L340 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2021-10-21 20:13:27,691 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 57 states have internal predecessors, (66), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 20:13:27,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 20:13:27,701 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:13:27,701 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:13:27,702 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 16 more)] === [2021-10-21 20:13:27,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:13:27,709 INFO L82 PathProgramCache]: Analyzing trace with hash 269519918, now seen corresponding path program 1 times [2021-10-21 20:13:27,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:13:27,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524947409] [2021-10-21 20:13:27,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:13:27,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:13:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:13:27,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:13:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:13:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:13:28,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:13:28,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524947409] [2021-10-21 20:13:28,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524947409] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:13:28,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:13:28,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:13:28,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217328946] [2021-10-21 20:13:28,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:13:28,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:13:28,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:13:28,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:13:28,051 INFO L87 Difference]: Start difference. First operand has 63 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 57 states have internal predecessors, (66), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:13:28,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:13:28,221 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2021-10-21 20:13:28,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:13:28,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-21 20:13:28,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:13:28,232 INFO L225 Difference]: With dead ends: 63 [2021-10-21 20:13:28,232 INFO L226 Difference]: Without dead ends: 56 [2021-10-21 20:13:28,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:13:28,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-21 20:13:28,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-21 20:13:28,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 32 states have (on average 1.75) internal successors, (56), 52 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:13:28,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2021-10-21 20:13:28,278 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 10 [2021-10-21 20:13:28,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:13:28,279 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2021-10-21 20:13:28,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:13:28,280 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2021-10-21 20:13:28,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:13:28,281 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:13:28,281 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:13:28,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:13:28,282 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 16 more)] === [2021-10-21 20:13:28,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:13:28,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1309651495, now seen corresponding path program 1 times [2021-10-21 20:13:28,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:13:28,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357137412] [2021-10-21 20:13:28,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:13:28,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:13:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:13:28,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:13:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:13:28,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:13:28,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:13:28,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357137412] [2021-10-21 20:13:28,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357137412] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:13:28,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:13:28,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:13:28,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309176767] [2021-10-21 20:13:28,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:13:28,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:13:28,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:13:28,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:13:28,446 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:13:28,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:13:28,663 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2021-10-21 20:13:28,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:13:28,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-21 20:13:28,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:13:28,671 INFO L225 Difference]: With dead ends: 74 [2021-10-21 20:13:28,671 INFO L226 Difference]: Without dead ends: 74 [2021-10-21 20:13:28,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:13:28,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-21 20:13:28,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 60. [2021-10-21 20:13:28,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 56 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:13:28,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2021-10-21 20:13:28,696 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 12 [2021-10-21 20:13:28,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:13:28,697 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2021-10-21 20:13:28,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:13:28,698 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2021-10-21 20:13:28,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:13:28,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:13:28,700 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:13:28,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:13:28,701 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 16 more)] === [2021-10-21 20:13:28,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:13:28,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1309651496, now seen corresponding path program 1 times [2021-10-21 20:13:28,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:13:28,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760997821] [2021-10-21 20:13:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:13:28,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:13:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:13:28,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 20:13:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:13:28,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:13:28,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:13:28,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760997821] [2021-10-21 20:13:28,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760997821] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:13:28,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:13:28,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:13:28,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560782226] [2021-10-21 20:13:28,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:13:28,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:13:28,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:13:28,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:13:28,929 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:13:29,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:13:29,166 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2021-10-21 20:13:29,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:13:29,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-21 20:13:29,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:13:29,171 INFO L225 Difference]: With dead ends: 81 [2021-10-21 20:13:29,171 INFO L226 Difference]: Without dead ends: 81 [2021-10-21 20:13:29,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:13:29,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-21 20:13:29,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2021-10-21 20:13:29,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 50 states have (on average 1.48) internal successors, (74), 65 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:13:29,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2021-10-21 20:13:29,190 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 12 [2021-10-21 20:13:29,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:13:29,191 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2021-10-21 20:13:29,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:13:29,192 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2021-10-21 20:13:29,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 20:13:29,193 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:13:29,194 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:13:29,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 20:13:29,194 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr12ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 16 more)] === [2021-10-21 20:13:29,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:13:29,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1341518452, now seen corresponding path program 1 times [2021-10-21 20:13:29,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:13:29,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032865034] [2021-10-21 20:13:29,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:13:29,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:13:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:13:29,245 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:13:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:13:29,298 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:13:29,298 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:13:29,300 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-21 20:13:29,302 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-21 20:13:29,302 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-21 20:13:29,303 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-21 20:13:29,303 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-21 20:13:29,303 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-21 20:13:29,303 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-21 20:13:29,304 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-21 20:13:29,304 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-21 20:13:29,304 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-21 20:13:29,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-21 20:13:29,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-21 20:13:29,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-21 20:13:29,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-21 20:13:29,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-21 20:13:29,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-21 20:13:29,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-21 20:13:29,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:13:29,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:13:29,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19ASSERT_VIOLATIONMEMORY_FREE [2021-10-21 20:13:29,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 20:13:29,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 20:13:29,316 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:13:29,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:13:29 BoogieIcfgContainer [2021-10-21 20:13:29,364 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:13:29,364 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:13:29,365 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:13:29,365 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:13:29,365 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:13:27" (3/4) ... [2021-10-21 20:13:29,368 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 20:13:29,417 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f42606-d17a-40ba-9601-4810e464670f/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:13:29,417 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:13:29,419 INFO L168 Benchmark]: Toolchain (without parser) took 3254.48 ms. Allocated memory is still 119.5 MB. Free memory was 80.6 MB in the beginning and 43.3 MB in the end (delta: 37.2 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:29,420 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 119.5 MB. Free memory was 98.1 MB in the beginning and 98.1 MB in the end (delta: 64.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:13:29,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 571.75 ms. Allocated memory is still 119.5 MB. Free memory was 80.4 MB in the beginning and 88.0 MB in the end (delta: -7.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:29,437 INFO L168 Benchmark]: Boogie Preprocessor took 68.16 ms. Allocated memory is still 119.5 MB. Free memory was 88.0 MB in the beginning and 85.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:29,438 INFO L168 Benchmark]: RCFGBuilder took 775.62 ms. Allocated memory is still 119.5 MB. Free memory was 85.3 MB in the beginning and 63.6 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:29,439 INFO L168 Benchmark]: TraceAbstraction took 1764.78 ms. Allocated memory is still 119.5 MB. Free memory was 63.2 MB in the beginning and 45.4 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-21 20:13:29,440 INFO L168 Benchmark]: Witness Printer took 53.01 ms. Allocated memory is still 119.5 MB. Free memory was 44.8 MB in the beginning and 43.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:13:29,443 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 119.5 MB. Free memory was 98.1 MB in the beginning and 98.1 MB in the end (delta: 64.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 571.75 ms. Allocated memory is still 119.5 MB. Free memory was 80.4 MB in the beginning and 88.0 MB in the end (delta: -7.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.16 ms. Allocated memory is still 119.5 MB. Free memory was 88.0 MB in the beginning and 85.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 775.62 ms. Allocated memory is still 119.5 MB. Free memory was 85.3 MB in the beginning and 63.6 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1764.78 ms. Allocated memory is still 119.5 MB. Free memory was 63.2 MB in the beginning and 45.4 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 53.01 ms. Allocated memory is still 119.5 MB. Free memory was 44.8 MB in the beginning and 43.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 551]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={-1:0}] [L534] List t; [L535] List p = a; [L536] int i = 0; VAL [a={-1:0}, i=0, p={-1:0}] [L537] i < 30 && __VERIFIER_nondet_int() [L537] i < 30 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 30 && __VERIFIER_nondet_int()=0, p={-1:0}] [L537] COND FALSE !(i < 30 && __VERIFIER_nondet_int()) [L545] p->h = i VAL [a={-1:0}, i=0, p={-1:0}] [L546] p->n = 0 VAL [a={-1:0}, i=0, p={-1:0}] [L547] p = a [L548] i = 0 VAL [a={-1:0}, i=0, p={-1:0}] [L549] COND TRUE p!=0 VAL [a={-1:0}, i=0, p={-1:0}] [L550] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=0] [L550] COND TRUE p->h != 1 [L551] reach_error() VAL [a={-1:0}, i=0, p={-1:0}] - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 558]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 558]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 82 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 1653.6ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 18.5ms, AutomataDifference: 680.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 109 SDtfs, 195 SDslu, 49 SDs, 0 SdLazy, 287 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 391.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 119.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=3, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 68.1ms AutomataMinimizationTime, 3 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 41.3ms SsaConstructionTime, 150.5ms SatisfiabilityAnalysisTime, 396.1ms InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 175 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-21 20:13:29,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73f42606-d17a-40ba-9601-4810e464670f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...