./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a7528f200456114b53348dcc6f65daa446d01523914ddd1f3b2ed0ccb2daf1cf ................................................................................................................................... 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_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a7528f200456114b53348dcc6f65daa446d01523914ddd1f3b2ed0ccb2daf1cf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:52:43,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:52:43,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:52:43,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:52:43,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:52:43,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:52:43,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:52:43,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:52:43,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:52:43,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:52:43,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:52:43,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:52:43,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:52:43,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:52:43,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:52:43,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:52:43,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:52:43,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:52:43,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:52:43,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:52:43,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:52:43,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:52:43,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:52:43,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:52:43,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:52:43,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:52:43,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:52:43,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:52:43,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:52:43,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:52:43,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:52:43,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:52:43,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:52:43,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:52:43,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:52:43,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:52:43,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:52:43,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:52:43,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:52:43,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:52:43,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:52:43,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 09:52:43,225 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:52:43,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:52:43,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:52:43,226 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:52:43,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:52:43,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:52:43,236 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:52:43,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:52:43,237 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:52:43,237 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:52:43,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:52:43,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:52:43,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:52:43,239 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:52:43,240 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:52:43,240 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:52:43,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:52:43,240 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:52:43,241 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:52:43,241 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:52:43,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:52:43,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:52:43,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:52:43,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:52:43,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:52:43,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:52:43,248 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:52:43,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:52:43,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:52:43,249 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_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7528f200456114b53348dcc6f65daa446d01523914ddd1f3b2ed0ccb2daf1cf [2021-10-28 09:52:43,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:52:43,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:52:43,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:52:43,661 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:52:43,663 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:52:43,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-10-28 09:52:43,763 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/data/f4885e403/01f8f9e0a15248d1969a19f509ffff45/FLAG214f2106f [2021-10-28 09:52:44,317 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:52:44,318 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-10-28 09:52:44,353 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/data/f4885e403/01f8f9e0a15248d1969a19f509ffff45/FLAG214f2106f [2021-10-28 09:52:44,631 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/data/f4885e403/01f8f9e0a15248d1969a19f509ffff45 [2021-10-28 09:52:44,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:52:44,635 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:52:44,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:52:44,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:52:44,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:52:44,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:52:44" (1/1) ... [2021-10-28 09:52:44,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c2925f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:44, skipping insertion in model container [2021-10-28 09:52:44,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:52:44" (1/1) ... [2021-10-28 09:52:44,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:52:44,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:52:45,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:52:45,187 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-28 09:52:45,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@709d3e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:45, skipping insertion in model container [2021-10-28 09:52:45,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:52:45,189 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-28 09:52:45,194 INFO L168 Benchmark]: Toolchain (without parser) took 555.88 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 54.7 MB in the beginning and 95.2 MB in the end (delta: -40.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:52:45,194 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory is still 41.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:52:45,198 INFO L168 Benchmark]: CACSL2BoogieTranslator took 542.88 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 54.5 MB in the beginning and 95.2 MB in the end (delta: -40.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:52:45,200 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory is still 41.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 542.88 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 54.5 MB in the beginning and 95.2 MB in the end (delta: -40.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 515]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:52:47,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:52:47,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:52:47,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:52:47,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:52:47,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:52:47,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:52:47,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:52:47,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:52:47,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:52:47,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:52:47,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:52:47,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:52:47,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:52:47,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:52:47,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:52:47,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:52:47,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:52:47,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:52:47,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:52:47,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:52:47,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:52:47,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:52:47,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:52:47,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:52:47,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:52:47,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:52:47,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:52:47,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:52:47,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:52:47,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:52:47,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:52:47,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:52:47,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:52:47,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:52:47,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:52:47,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:52:47,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:52:47,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:52:47,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:52:47,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:52:47,849 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 09:52:47,898 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:52:47,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:52:47,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:52:47,900 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:52:47,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:52:47,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:52:47,902 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:52:47,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:52:47,904 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:52:47,904 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:52:47,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:52:47,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:52:47,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:52:47,906 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:52:47,907 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:52:47,907 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:52:47,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:52:47,908 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:52:47,908 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:52:47,908 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:52:47,908 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:52:47,909 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:52:47,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:52:47,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:52:47,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:52:47,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:52:47,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:52:47,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:52:47,911 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:52:47,911 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:52:47,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:52:47,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:52:47,912 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_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7528f200456114b53348dcc6f65daa446d01523914ddd1f3b2ed0ccb2daf1cf [2021-10-28 09:52:48,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:52:48,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:52:48,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:52:48,412 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:52:48,412 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:52:48,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-10-28 09:52:48,500 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/data/2ae323255/324c336644094074b4959d9e9dc6de9a/FLAGe6e9df312 [2021-10-28 09:52:49,161 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:52:49,161 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/sv-benchmarks/c/array-memsafety-realloc/array-realloc-1.i [2021-10-28 09:52:49,180 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/data/2ae323255/324c336644094074b4959d9e9dc6de9a/FLAGe6e9df312 [2021-10-28 09:52:49,422 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/data/2ae323255/324c336644094074b4959d9e9dc6de9a [2021-10-28 09:52:49,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:52:49,426 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:52:49,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:52:49,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:52:49,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:52:49,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:52:49" (1/1) ... [2021-10-28 09:52:49,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39efccf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:49, skipping insertion in model container [2021-10-28 09:52:49,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:52:49" (1/1) ... [2021-10-28 09:52:49,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:52:49,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:52:49,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:52:49,893 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-28 09:52:49,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:52:49,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:52:49,986 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:52:50,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:52:50,091 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:52:50,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:50 WrapperNode [2021-10-28 09:52:50,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:52:50,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:52:50,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:52:50,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:52:50,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:50" (1/1) ... [2021-10-28 09:52:50,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:50" (1/1) ... [2021-10-28 09:52:50,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:50" (1/1) ... [2021-10-28 09:52:50,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:50" (1/1) ... [2021-10-28 09:52:50,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:50" (1/1) ... [2021-10-28 09:52:50,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:50" (1/1) ... [2021-10-28 09:52:50,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:50" (1/1) ... [2021-10-28 09:52:50,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:52:50,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:52:50,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:52:50,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:52:50,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:50" (1/1) ... [2021-10-28 09:52:50,204 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:52:50,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:52:50,230 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:52:50,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:52:50,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:52:50,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:52:50,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:52:50,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 09:52:50,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 09:52:50,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 09:52:50,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 09:52:50,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 09:52:50,279 INFO L138 BoogieDeclarations]: Found implementation of procedure expandArray [2021-10-28 09:52:50,280 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:52:50,280 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2021-10-28 09:52:50,280 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:52:50,280 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:52:50,280 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:52:50,280 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:52:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:52:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:52:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:52:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:52:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:52:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:52:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:52:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:52:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:52:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:52:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:52:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:52:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 09:52:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 09:52:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 09:52:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 09:52:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 09:52:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:52:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:52:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:52:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:52:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:52:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:52:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:52:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:52:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:52:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:52:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:52:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:52:50,285 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:52:50,285 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:52:50,285 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:52:50,285 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:52:50,285 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:52:50,285 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:52:50,285 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:52:50,285 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:52:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:52:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:52:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:52:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:52:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:52:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:52:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:52:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:52:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:52:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:52:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:52:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:52:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:52:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:52:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:52:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:52:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:52:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:52:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:52:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:52:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:52:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:52:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:52:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:52:50,289 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:52:50,289 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:52:50,289 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:52:50,289 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:52:50,289 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:52:50,289 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:52:50,289 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:52:50,297 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:52:50,297 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:52:50,297 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:52:50,298 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:52:50,298 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:52:50,298 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:52:50,298 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:52:50,298 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:52:50,298 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:52:50,298 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:52:50,299 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:52:50,299 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:52:50,299 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:52:50,299 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:52:50,299 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:52:50,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:52:50,299 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:52:50,300 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:52:50,300 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:52:50,300 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:52:50,300 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:52:50,300 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:52:50,301 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:52:50,301 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:52:50,301 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:52:50,301 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:52:50,301 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:52:50,301 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:52:50,301 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:52:50,302 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:52:50,302 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:52:50,302 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:52:50,302 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:52:50,302 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:52:50,302 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:52:50,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 09:52:50,303 INFO L130 BoogieDeclarations]: Found specification of procedure expandArray [2021-10-28 09:52:50,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2021-10-28 09:52:50,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 09:52:50,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:52:50,305 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:52:50,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:52:50,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:52:50,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:52:50,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 09:52:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 09:52:50,908 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:52:50,909 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 09:52:50,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:52:50 BoogieIcfgContainer [2021-10-28 09:52:50,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:52:50,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:52:50,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:52:50,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:52:50,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:52:49" (1/3) ... [2021-10-28 09:52:50,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fa4c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:52:50, skipping insertion in model container [2021-10-28 09:52:50,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:50" (2/3) ... [2021-10-28 09:52:50,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fa4c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:52:50, skipping insertion in model container [2021-10-28 09:52:50,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:52:50" (3/3) ... [2021-10-28 09:52:50,920 INFO L111 eAbstractionObserver]: Analyzing ICFG array-realloc-1.i [2021-10-28 09:52:50,926 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:52:50,927 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-10-28 09:52:50,971 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:52:50,978 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:52:50,978 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-10-28 09:52:50,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 24 states have (on average 1.625) internal successors, (39), 33 states have internal predecessors, (39), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-28 09:52:51,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:52:51,029 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:51,030 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:51,030 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr3ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 09:52:51,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:51,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1774917903, now seen corresponding path program 1 times [2021-10-28 09:52:51,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:51,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861252753] [2021-10-28 09:52:51,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:51,050 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:51,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:51,053 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:51,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:52:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:51,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:52:51,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:51,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:52:51,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:51,366 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:52:51,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861252753] [2021-10-28 09:52:51,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861252753] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:51,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:51,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:52:51,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273381233] [2021-10-28 09:52:51,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:52:51,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:52:51,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:52:51,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:52:51,399 INFO L87 Difference]: Start difference. First operand has 42 states, 24 states have (on average 1.625) internal successors, (39), 33 states have internal predecessors, (39), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:51,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:51,512 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2021-10-28 09:52:51,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:52:51,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 8 [2021-10-28 09:52:51,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:51,524 INFO L225 Difference]: With dead ends: 55 [2021-10-28 09:52:51,524 INFO L226 Difference]: Without dead ends: 51 [2021-10-28 09:52:51,526 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:52:51,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-28 09:52:51,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 39. [2021-10-28 09:52:51,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 31 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:52:51,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-10-28 09:52:51,584 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 8 [2021-10-28 09:52:51,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:51,585 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-10-28 09:52:51,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:51,586 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-10-28 09:52:51,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:52:51,586 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:51,587 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:51,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-28 09:52:51,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:52:51,798 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr3ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 09:52:51,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:51,799 INFO L85 PathProgramCache]: Analyzing trace with hash -812119182, now seen corresponding path program 1 times [2021-10-28 09:52:51,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:51,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690450291] [2021-10-28 09:52:51,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:51,800 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:51,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:51,802 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:51,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:52:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:51,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:52:51,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:51,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:51,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:52:52,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:52,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:52:52,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690450291] [2021-10-28 09:52:52,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690450291] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:52,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:52,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 09:52:52,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515887779] [2021-10-28 09:52:52,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:52:52,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:52:52,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:52:52,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:52:52,023 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:52,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:52,040 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-28 09:52:52,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:52:52,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 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 9 [2021-10-28 09:52:52,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:52,043 INFO L225 Difference]: With dead ends: 39 [2021-10-28 09:52:52,043 INFO L226 Difference]: Without dead ends: 39 [2021-10-28 09:52:52,045 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:52:52,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-28 09:52:52,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-28 09:52:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 31 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:52:52,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-28 09:52:52,057 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 9 [2021-10-28 09:52:52,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:52,057 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-28 09:52:52,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:52,058 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-28 09:52:52,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:52:52,058 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:52,059 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:52,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:52,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:52:52,276 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 09:52:52,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:52,277 INFO L85 PathProgramCache]: Analyzing trace with hash -386852574, now seen corresponding path program 1 times [2021-10-28 09:52:52,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:52,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787088058] [2021-10-28 09:52:52,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:52,278 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:52,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:52,279 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:52,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:52:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:52,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:52:52,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:52,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:52:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:52,561 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:52:52,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787088058] [2021-10-28 09:52:52,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787088058] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:52,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:52,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 09:52:52,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866849315] [2021-10-28 09:52:52,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:52:52,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:52:52,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:52:52,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:52:52,565 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:52,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:52,607 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2021-10-28 09:52:52,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:52:52,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-10-28 09:52:52,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:52,609 INFO L225 Difference]: With dead ends: 46 [2021-10-28 09:52:52,609 INFO L226 Difference]: Without dead ends: 46 [2021-10-28 09:52:52,610 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:52:52,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-28 09:52:52,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2021-10-28 09:52:52,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.48) internal successors, (37), 33 states have internal predecessors, (37), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:52:52,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2021-10-28 09:52:52,622 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 13 [2021-10-28 09:52:52,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:52,622 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2021-10-28 09:52:52,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:52:52,623 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2021-10-28 09:52:52,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:52:52,623 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:52,624 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:52,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:52,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:52:52,824 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting expandArrayErr0REQUIRES_VIOLATION === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 09:52:52,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:52,825 INFO L85 PathProgramCache]: Analyzing trace with hash -171591004, now seen corresponding path program 1 times [2021-10-28 09:52:52,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:52,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96710700] [2021-10-28 09:52:52,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:52,827 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:52,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:52,828 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:52,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:52:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:52,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:52:52,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:53,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:53,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:52:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:53,200 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:52:53,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96710700] [2021-10-28 09:52:53,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96710700] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:53,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:53,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-28 09:52:53,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923433354] [2021-10-28 09:52:53,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:52:53,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:52:53,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:52:53,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:52:53,202 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:52:53,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:53,273 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2021-10-28 09:52:53,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:52:53,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-10-28 09:52:53,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:53,276 INFO L225 Difference]: With dead ends: 52 [2021-10-28 09:52:53,276 INFO L226 Difference]: Without dead ends: 52 [2021-10-28 09:52:53,276 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:52:53,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-28 09:52:53,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2021-10-28 09:52:53,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 36 states have internal predecessors, (38), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-28 09:52:53,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-10-28 09:52:53,284 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 17 [2021-10-28 09:52:53,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:53,284 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-10-28 09:52:53,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:52:53,285 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-10-28 09:52:53,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:52:53,286 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:53,287 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:53,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:53,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:52:53,503 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting expandArrayErr0REQUIRES_VIOLATION === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 09:52:53,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:53,503 INFO L85 PathProgramCache]: Analyzing trace with hash -170667483, now seen corresponding path program 1 times [2021-10-28 09:52:53,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:53,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330865233] [2021-10-28 09:52:53,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:53,504 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:53,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:53,506 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:53,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 09:52:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:53,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:52:53,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:53,782 INFO L354 Elim1Store]: treesize reduction 10, result has 50.0 percent of original size [2021-10-28 09:52:53,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 16 [2021-10-28 09:52:53,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:53,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:52:53,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:53,928 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:52:53,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330865233] [2021-10-28 09:52:53,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330865233] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:53,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:53,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 09:52:53,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291499311] [2021-10-28 09:52:53,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:52:53,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:52:53,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:52:53,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:52:53,930 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:52:54,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:54,043 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2021-10-28 09:52:54,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:52:54,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-10-28 09:52:54,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:54,045 INFO L225 Difference]: With dead ends: 45 [2021-10-28 09:52:54,045 INFO L226 Difference]: Without dead ends: 45 [2021-10-28 09:52:54,046 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:52:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-28 09:52:54,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-10-28 09:52:54,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 34 states have internal predecessors, (36), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-28 09:52:54,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-10-28 09:52:54,052 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 17 [2021-10-28 09:52:54,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:54,053 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-10-28 09:52:54,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:52:54,053 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-10-28 09:52:54,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:52:54,054 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:54,054 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:54,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:54,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:52:54,259 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting expandArrayErr1REQUIRES_VIOLATION === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 09:52:54,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:54,259 INFO L85 PathProgramCache]: Analyzing trace with hash -170667482, now seen corresponding path program 1 times [2021-10-28 09:52:54,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:54,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825178791] [2021-10-28 09:52:54,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:54,260 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:54,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:54,261 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:54,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 09:52:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:54,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:52:54,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:54,496 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 [2021-10-28 09:52:54,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:54,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:52:55,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:55,411 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:52:55,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825178791] [2021-10-28 09:52:55,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825178791] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:55,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:55,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-28 09:52:55,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800360529] [2021-10-28 09:52:55,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:52:55,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:52:55,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:52:55,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:52:55,415 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:52:57,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:57,114 INFO L93 Difference]: Finished difference Result 121 states and 129 transitions. [2021-10-28 09:52:57,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:52:57,115 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 17 [2021-10-28 09:52:57,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:57,116 INFO L225 Difference]: With dead ends: 121 [2021-10-28 09:52:57,117 INFO L226 Difference]: Without dead ends: 119 [2021-10-28 09:52:57,117 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:52:57,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-10-28 09:52:57,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 63. [2021-10-28 09:52:57,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 49 states have internal predecessors, (58), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-28 09:52:57,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2021-10-28 09:52:57,123 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 17 [2021-10-28 09:52:57,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:57,123 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2021-10-28 09:52:57,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:52:57,124 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2021-10-28 09:52:57,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:52:57,125 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:57,125 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:57,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:57,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:52:57,333 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 09:52:57,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:57,333 INFO L85 PathProgramCache]: Analyzing trace with hash 2028589773, now seen corresponding path program 1 times [2021-10-28 09:52:57,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:57,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496262598] [2021-10-28 09:52:57,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:57,334 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:57,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:57,335 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:57,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 09:52:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:57,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:52:57,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:57,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:57,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:52:57,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:57,590 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:52:57,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496262598] [2021-10-28 09:52:57,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496262598] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:57,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:57,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:52:57,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117208657] [2021-10-28 09:52:57,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:52:57,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:52:57,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:52:57,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:52:57,593 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:52:57,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:57,603 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2021-10-28 09:52:57,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:52:57,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-10-28 09:52:57,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:57,606 INFO L225 Difference]: With dead ends: 62 [2021-10-28 09:52:57,607 INFO L226 Difference]: Without dead ends: 62 [2021-10-28 09:52:57,608 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:52:57,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-28 09:52:57,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-10-28 09:52:57,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 48 states have internal predecessors, (57), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-28 09:52:57,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2021-10-28 09:52:57,616 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 17 [2021-10-28 09:52:57,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:57,616 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2021-10-28 09:52:57,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:52:57,617 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2021-10-28 09:52:57,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:52:57,618 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:57,618 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:57,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:57,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:52:57,829 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr1ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 09:52:57,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:57,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1538226398, now seen corresponding path program 1 times [2021-10-28 09:52:57,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:57,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483033205] [2021-10-28 09:52:57,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:57,830 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:57,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:57,832 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:57,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 09:52:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:57,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:52:57,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:58,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:58,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:52:58,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:58,137 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:52:58,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483033205] [2021-10-28 09:52:58,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483033205] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:58,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:58,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 3 [2021-10-28 09:52:58,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919461739] [2021-10-28 09:52:58,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:52:58,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:52:58,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:52:58,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:58,143 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 09:52:58,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:58,191 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-10-28 09:52:58,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:52:58,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2021-10-28 09:52:58,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:58,194 INFO L225 Difference]: With dead ends: 61 [2021-10-28 09:52:58,194 INFO L226 Difference]: Without dead ends: 61 [2021-10-28 09:52:58,194 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-28 09:52:58,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-28 09:52:58,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 43 states have (on average 1.302325581395349) internal successors, (56), 47 states have internal predecessors, (56), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-28 09:52:58,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2021-10-28 09:52:58,210 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 18 [2021-10-28 09:52:58,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:58,210 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2021-10-28 09:52:58,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 09:52:58,210 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2021-10-28 09:52:58,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:52:58,212 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:58,212 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:58,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:58,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:52:58,413 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 09:52:58,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:58,414 INFO L85 PathProgramCache]: Analyzing trace with hash -440378001, now seen corresponding path program 1 times [2021-10-28 09:52:58,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:58,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439707450] [2021-10-28 09:52:58,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:58,415 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:58,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:58,416 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:58,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 09:52:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:58,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:52:58,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:58,617 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 [2021-10-28 09:52:58,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:58,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:52:58,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:58,922 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:52:58,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439707450] [2021-10-28 09:52:58,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439707450] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:58,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:58,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-28 09:52:58,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544533131] [2021-10-28 09:52:58,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:52:58,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:52:58,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:52:58,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:52:58,927 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 09:52:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:59,038 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2021-10-28 09:52:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:52:59,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2021-10-28 09:52:59,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:59,040 INFO L225 Difference]: With dead ends: 74 [2021-10-28 09:52:59,040 INFO L226 Difference]: Without dead ends: 74 [2021-10-28 09:52:59,041 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:52:59,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-28 09:52:59,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2021-10-28 09:52:59,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 53 states have internal predecessors, (62), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-10-28 09:52:59,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2021-10-28 09:52:59,047 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 19 [2021-10-28 09:52:59,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:59,048 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2021-10-28 09:52:59,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 09:52:59,048 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2021-10-28 09:52:59,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:52:59,049 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:59,049 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:59,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:59,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:52:59,262 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr3ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 09:52:59,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:59,263 INFO L85 PathProgramCache]: Analyzing trace with hash -766816059, now seen corresponding path program 1 times [2021-10-28 09:52:59,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:52:59,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300523656] [2021-10-28 09:52:59,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:59,264 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:52:59,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:52:59,267 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:52:59,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 09:52:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:59,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:52:59,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:59,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:59,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:52:59,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:59,841 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:52:59,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300523656] [2021-10-28 09:52:59,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300523656] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:59,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:59,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-28 09:52:59,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681086561] [2021-10-28 09:52:59,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:52:59,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:52:59,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:52:59,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:52:59,844 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 10 states, 8 states have (on average 2.75) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:52:59,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:59,995 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2021-10-28 09:52:59,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:52:59,996 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.75) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 20 [2021-10-28 09:52:59,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:59,997 INFO L225 Difference]: With dead ends: 60 [2021-10-28 09:52:59,997 INFO L226 Difference]: Without dead ends: 60 [2021-10-28 09:52:59,997 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:53:00,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-28 09:53:00,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-28 09:53:00,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 46 states have internal predecessors, (54), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-28 09:53:00,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2021-10-28 09:53:00,006 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 20 [2021-10-28 09:53:00,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:53:00,007 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2021-10-28 09:53:00,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.75) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:53:00,007 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2021-10-28 09:53:00,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 09:53:00,008 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:53:00,008 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:53:00,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:53:00,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:53:00,221 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting expandArrayErr3ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 09:53:00,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:00,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1360467952, now seen corresponding path program 1 times [2021-10-28 09:53:00,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:53:00,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110053582] [2021-10-28 09:53:00,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:00,222 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:53:00,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:53:00,231 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:53:00,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-28 09:53:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:00,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:53:00,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:53:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:00,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:53:00,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:00,943 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:53:00,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110053582] [2021-10-28 09:53:00,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110053582] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:00,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:00,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-10-28 09:53:00,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211461137] [2021-10-28 09:53:00,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:53:00,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:53:00,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:53:00,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:53:00,945 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 09:53:01,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:53:01,174 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2021-10-28 09:53:01,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:53:01,175 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 22 [2021-10-28 09:53:01,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:53:01,176 INFO L225 Difference]: With dead ends: 59 [2021-10-28 09:53:01,176 INFO L226 Difference]: Without dead ends: 59 [2021-10-28 09:53:01,177 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:53:01,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-28 09:53:01,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-10-28 09:53:01,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 45 states have internal predecessors, (53), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-28 09:53:01,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2021-10-28 09:53:01,181 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 22 [2021-10-28 09:53:01,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:53:01,181 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2021-10-28 09:53:01,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 09:53:01,181 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2021-10-28 09:53:01,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 09:53:01,182 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:53:01,182 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:53:01,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:53:01,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:53:01,383 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 09:53:01,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:01,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1753462742, now seen corresponding path program 1 times [2021-10-28 09:53:01,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:53:01,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683397731] [2021-10-28 09:53:01,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:01,384 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:53:01,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:53:01,385 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:53:01,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-28 09:53:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:01,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:53:01,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:53:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:01,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:53:01,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:01,784 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:53:01,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683397731] [2021-10-28 09:53:01,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683397731] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:01,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:01,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-28 09:53:01,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538075857] [2021-10-28 09:53:01,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:53:01,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:53:01,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:53:01,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:53:01,785 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:53:01,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:53:01,859 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2021-10-28 09:53:01,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:53:01,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-10-28 09:53:01,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:53:01,861 INFO L225 Difference]: With dead ends: 59 [2021-10-28 09:53:01,861 INFO L226 Difference]: Without dead ends: 59 [2021-10-28 09:53:01,861 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:53:01,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-28 09:53:01,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-10-28 09:53:01,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 45 states have internal predecessors, (51), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-28 09:53:01,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2021-10-28 09:53:01,866 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 27 [2021-10-28 09:53:01,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:53:01,867 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2021-10-28 09:53:01,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:53:01,867 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2021-10-28 09:53:01,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 09:53:01,868 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:53:01,868 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:53:01,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:53:02,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:53:02,078 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 09:53:02,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:02,078 INFO L85 PathProgramCache]: Analyzing trace with hash 64890135, now seen corresponding path program 1 times [2021-10-28 09:53:02,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:53:02,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080030217] [2021-10-28 09:53:02,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:02,079 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:53:02,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:53:02,079 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:53:02,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-28 09:53:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:02,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:53:02,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:53:02,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:53:02,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:53:02,540 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:53:02,540 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:53:02,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080030217] [2021-10-28 09:53:02,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080030217] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 09:53:02,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:53:02,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-28 09:53:02,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381825637] [2021-10-28 09:53:02,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:53:02,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:53:02,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:53:02,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:53:02,544 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 09:53:02,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:53:02,665 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2021-10-28 09:53:02,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:53:02,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2021-10-28 09:53:02,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:53:02,667 INFO L225 Difference]: With dead ends: 65 [2021-10-28 09:53:02,667 INFO L226 Difference]: Without dead ends: 59 [2021-10-28 09:53:02,667 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:53:02,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-28 09:53:02,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-10-28 09:53:02,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 45 states have internal predecessors, (48), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-28 09:53:02,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2021-10-28 09:53:02,671 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 29 [2021-10-28 09:53:02,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:53:02,672 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2021-10-28 09:53:02,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-28 09:53:02,673 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2021-10-28 09:53:02,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 09:53:02,674 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:53:02,674 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:53:02,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:53:02,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:53:02,884 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 09:53:02,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:02,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1742564328, now seen corresponding path program 1 times [2021-10-28 09:53:02,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:53:02,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125048790] [2021-10-28 09:53:02,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:02,885 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:53:02,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:53:02,887 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:53:02,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-28 09:53:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:03,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:53:03,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:53:03,271 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:53:03,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:53:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:53:03,381 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:53:03,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125048790] [2021-10-28 09:53:03,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125048790] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:03,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:03,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 09:53:03,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804029713] [2021-10-28 09:53:03,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:53:03,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:53:03,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:53:03,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:53:03,384 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:53:03,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:53:03,422 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2021-10-28 09:53:03,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:53:03,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2021-10-28 09:53:03,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:53:03,424 INFO L225 Difference]: With dead ends: 58 [2021-10-28 09:53:03,424 INFO L226 Difference]: Without dead ends: 58 [2021-10-28 09:53:03,424 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:53:03,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-28 09:53:03,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-10-28 09:53:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.125) internal successors, (45), 42 states have internal predecessors, (45), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-28 09:53:03,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2021-10-28 09:53:03,427 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 29 [2021-10-28 09:53:03,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:53:03,428 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2021-10-28 09:53:03,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:53:03,428 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2021-10-28 09:53:03,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 09:53:03,429 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:53:03,429 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:53:03,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:53:03,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:53:03,642 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ENSURES_VIOLATIONMEMORY_LEAK (and 5 more)] === [2021-10-28 09:53:03,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:03,642 INFO L85 PathProgramCache]: Analyzing trace with hash 188620705, now seen corresponding path program 1 times [2021-10-28 09:53:03,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:53:03,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395639127] [2021-10-28 09:53:03,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:03,643 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:53:03,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:53:03,643 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:53:03,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-28 09:53:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:53:03,890 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:53:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:53:03,974 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 09:53:03,975 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:53:03,976 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:53:03,978 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:53:03,978 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:53:03,979 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:53:03,979 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr0REQUIRES_VIOLATION [2021-10-28 09:53:03,979 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr1REQUIRES_VIOLATION [2021-10-28 09:53:03,979 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:53:03,979 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:53:03,980 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location expandArrayErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:53:03,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:53:04,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:53:04,193 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:53:04,198 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:53:04,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:53:04 BoogieIcfgContainer [2021-10-28 09:53:04,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:53:04,247 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:53:04,247 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:53:04,247 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:53:04,248 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:52:50" (3/4) ... [2021-10-28 09:53:04,250 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:53:04,332 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:53:04,332 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:53:04,334 INFO L168 Benchmark]: Toolchain (without parser) took 14907.13 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 33.3 MB in the beginning and 30.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:04,334 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 56.6 MB. Free memory is still 37.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:53:04,335 INFO L168 Benchmark]: CACSL2BoogieTranslator took 665.64 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.1 MB in the beginning and 42.9 MB in the end (delta: -9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:04,336 INFO L168 Benchmark]: Boogie Preprocessor took 94.76 ms. Allocated memory is still 69.2 MB. Free memory was 42.9 MB in the beginning and 40.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:04,336 INFO L168 Benchmark]: RCFGBuilder took 721.13 ms. Allocated memory is still 69.2 MB. Free memory was 40.1 MB in the beginning and 36.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:04,336 INFO L168 Benchmark]: TraceAbstraction took 13333.29 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 36.6 MB in the beginning and 33.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:04,337 INFO L168 Benchmark]: Witness Printer took 85.51 ms. Allocated memory is still 83.9 MB. Free memory was 33.3 MB in the beginning and 30.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:04,339 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 56.6 MB. Free memory is still 37.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 665.64 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.1 MB in the beginning and 42.9 MB in the end (delta: -9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 94.76 ms. Allocated memory is still 69.2 MB. Free memory was 42.9 MB in the beginning and 40.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 721.13 ms. Allocated memory is still 69.2 MB. Free memory was 40.1 MB in the beginning and 36.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13333.29 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 36.6 MB in the beginning and 33.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. * Witness Printer took 85.51 ms. Allocated memory is still 83.9 MB. Free memory was 33.3 MB in the beginning and 30.4 MB in the end (delta: 2.8 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 538]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L512] int num; [L513] int ind, newsize, i = 1; VAL [\old(i)=5, \old(ind)=6, \old(newsize)=7, \old(num)=9, i=1, ind=0, newsize=0, num=0] [L528] num = __VERIFIER_nondet_int() [L529] COND FALSE !(!(num > 0 && num < 100)) [L532] int *a = (int *)malloc(sizeof(int)); [L533] COND FALSE !(a == ((void *)0)) [L536] newsize = 0 VAL [\old(argc)=11, \old(newsize)=0, \old(num)=0, a={1:0}, argc=11, argv={13:12}, argv={13:12}, i=1, ind=0, newsize=0, num=1] [L537] CALL expandArray(a) VAL [\old(newsize)=0, \old(num)=0, arg={1:0}, i=1, ind=0, newsize=0, num=1] [L515] int *a = (int *)arg; [L516] int *b = ((void *)0); VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={0:0}, i=1, ind=0, newsize=0, num=1] [L517] COND TRUE newsize < num [L518] newsize = newsize + 1 VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={0:0}, i=1, ind=0, newsize=1, num=1] [L519] EXPR, FCALL realloc(a, sizeof(int) * newsize) VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={0:0}, i=1, ind=0, newsize=1, num=1, realloc(a, sizeof(int) * newsize)={1:0}] [L519] b = realloc(a, sizeof(int) * newsize) [L520] b[newsize - 1] = i VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L521] a = b VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L517] COND FALSE !(newsize < num) VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L523] COND TRUE b != ((void *)0) VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L524] free(b) VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L524] free(b) VAL [\old(newsize)=0, \old(num)=0, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L524] free(b) [L525] return 0; VAL [\old(newsize)=0, \old(num)=0, \result={0:0}, a={1:0}, arg={1:0}, arg={1:0}, b={1:0}, i=1, ind=0, newsize=1, num=1] [L537] RET expandArray(a) VAL [\old(argc)=11, \old(newsize)=0, \old(num)=0, a={1:0}, argc=11, argv={13:12}, argv={13:12}, expandArray(a)={0:0}, i=1, ind=0, newsize=1, num=1] [L538] free(a) VAL [\old(argc)=11, \old(newsize)=0, \old(num)=0, a={1:0}, argc=11, argv={13:12}, argv={13:12}, i=1, ind=0, newsize=1, num=1] [L538] free(a) VAL [\old(argc)=11, \old(newsize)=0, \old(num)=0, a={1:0}, argc=11, argv={13:12}, argv={13:12}, i=1, ind=0, newsize=1, num=1] [L538] free(a) VAL [\old(argc)=11, \old(newsize)=0, \old(num)=0, a={1:0}, argc=11, argv={13:12}, argv={13:12}, i=1, ind=0, newsize=1, num=1] - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 527]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 520]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 520]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 524]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 524]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 524]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 63 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 13.2s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 468 SDtfs, 411 SDslu, 944 SDs, 0 SdLazy, 608 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 528 GetRequests, 456 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=9, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 92 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 292 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 496 ConstructedInterpolants, 21 QuantifiedInterpolants, 1569 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1321 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 28 InterpolantComputations, 26 PerfectInterpolantSequences, 40/44 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! [2021-10-28 09:53:04,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e86f1836-c930-4b3c-8d87-a0a208c85323/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...