./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/array02-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/array02-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX --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 6376f52a263bde0c709cb35a0d040626ae764c5527f8161f54a95df7802768d2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:09:14,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:09:14,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:09:14,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:09:14,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:09:14,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:09:14,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:09:14,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:09:14,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:09:14,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:09:14,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:09:14,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:09:14,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:09:14,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:09:14,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:09:14,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:09:14,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:09:14,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:09:14,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:09:14,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:09:14,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:09:15,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:09:15,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:09:15,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:09:15,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:09:15,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:09:15,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:09:15,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:09:15,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:09:15,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:09:15,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:09:15,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:09:15,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:09:15,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:09:15,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:09:15,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:09:15,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:09:15,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:09:15,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:09:15,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:09:15,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:09:15,032 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 09:09:15,066 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:09:15,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:09:15,067 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:09:15,067 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:09:15,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:09:15,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:09:15,069 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:09:15,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:09:15,069 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:09:15,069 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:09:15,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:09:15,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:09:15,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:09:15,070 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 09:09:15,070 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 09:09:15,071 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 09:09:15,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:09:15,071 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 09:09:15,071 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:09:15,072 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:09:15,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:09:15,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:09:15,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:09:15,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:09:15,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:09:15,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:09:15,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:09:15,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:09:15,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:09:15,074 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_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6376f52a263bde0c709cb35a0d040626ae764c5527f8161f54a95df7802768d2 [2021-11-09 09:09:15,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:09:15,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:09:15,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:09:15,348 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:09:15,355 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:09:15,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2021-11-09 09:09:15,433 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/data/694e3114c/18399cff68404f3d969fb11c12c83921/FLAGe046e99a1 [2021-11-09 09:09:15,940 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:09:15,940 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2021-11-09 09:09:15,953 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/data/694e3114c/18399cff68404f3d969fb11c12c83921/FLAGe046e99a1 [2021-11-09 09:09:16,278 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/data/694e3114c/18399cff68404f3d969fb11c12c83921 [2021-11-09 09:09:16,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:09:16,282 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 09:09:16,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:16,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:09:16,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:09:16,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:16" (1/1) ... [2021-11-09 09:09:16,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d1ec9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:16, skipping insertion in model container [2021-11-09 09:09:16,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:16" (1/1) ... [2021-11-09 09:09:16,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:09:16,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:09:16,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:16,744 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) [2021-11-09 09:09:16,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a41165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:16, skipping insertion in model container [2021-11-09 09:09:16,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:16,748 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-09 09:09:16,751 INFO L168 Benchmark]: Toolchain (without parser) took 467.17 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 64.7 MB in the beginning and 92.4 MB in the end (delta: -27.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:16,753 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 96.5 MB. Free memory is still 49.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:09:16,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 460.64 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 64.5 MB in the beginning and 92.9 MB in the end (delta: -28.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:16,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 96.5 MB. Free memory is still 49.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 460.64 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 64.5 MB in the beginning and 92.9 MB in the end (delta: -28.4 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: 533]: 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/array02-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX --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 6376f52a263bde0c709cb35a0d040626ae764c5527f8161f54a95df7802768d2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:09:19,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:09:19,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:09:19,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:09:19,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:09:19,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:09:19,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:09:19,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:09:19,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:09:19,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:09:19,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:09:19,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:09:19,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:09:19,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:09:19,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:09:19,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:09:19,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:09:19,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:09:19,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:09:19,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:09:19,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:09:19,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:09:19,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:09:19,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:09:19,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:09:19,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:09:19,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:09:19,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:09:19,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:09:19,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:09:19,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:09:19,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:09:19,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:09:19,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:09:19,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:09:19,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:09:19,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:09:19,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:09:19,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:09:19,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:09:19,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:09:19,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-09 09:09:19,213 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:09:19,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:09:19,214 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:09:19,215 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:09:19,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:09:19,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:09:19,217 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:09:19,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:09:19,218 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:09:19,218 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:09:19,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:09:19,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:09:19,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:09:19,219 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 09:09:19,220 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 09:09:19,220 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 09:09:19,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:09:19,220 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 09:09:19,221 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 09:09:19,221 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 09:09:19,221 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:09:19,221 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:09:19,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:09:19,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:09:19,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:09:19,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:09:19,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:09:19,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:09:19,223 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 09:09:19,223 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 09:09:19,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:09:19,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 09:09:19,224 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_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6376f52a263bde0c709cb35a0d040626ae764c5527f8161f54a95df7802768d2 [2021-11-09 09:09:19,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:09:19,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:09:19,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:09:19,705 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:09:19,705 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:09:19,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2021-11-09 09:09:19,790 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/data/839beace4/2f1bde94720945928e352daf4bc14006/FLAG2e863ad97 [2021-11-09 09:09:20,521 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:09:20,525 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2021-11-09 09:09:20,547 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/data/839beace4/2f1bde94720945928e352daf4bc14006/FLAG2e863ad97 [2021-11-09 09:09:20,559 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/data/839beace4/2f1bde94720945928e352daf4bc14006 [2021-11-09 09:09:20,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:09:20,564 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 09:09:20,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:20,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:09:20,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:09:20,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:20" (1/1) ... [2021-11-09 09:09:20,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7664225e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:20, skipping insertion in model container [2021-11-09 09:09:20,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:20" (1/1) ... [2021-11-09 09:09:20,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:09:20,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:09:20,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:20,995 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-09 09:09:21,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:09:21,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:21,068 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:09:21,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:21,159 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:09:21,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:21 WrapperNode [2021-11-09 09:09:21,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:21,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:09:21,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:09:21,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:09:21,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:21" (1/1) ... [2021-11-09 09:09:21,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:21" (1/1) ... [2021-11-09 09:09:21,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:21" (1/1) ... [2021-11-09 09:09:21,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:21" (1/1) ... [2021-11-09 09:09:21,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:21" (1/1) ... [2021-11-09 09:09:21,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:21" (1/1) ... [2021-11-09 09:09:21,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:21" (1/1) ... [2021-11-09 09:09:21,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:09:21,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:09:21,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:09:21,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:09:21,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:21" (1/1) ... [2021-11-09 09:09:21,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:09:21,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:21,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:21,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:09:21,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 09:09:21,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:09:21,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 09:09:21,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 09:09:21,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 09:09:21,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-09 09:09:21,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-09 09:09:21,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-09 09:09:21,360 INFO L138 BoogieDeclarations]: Found implementation of procedure test_fun [2021-11-09 09:09:21,360 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 09:09:21,361 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 09:09:21,361 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 09:09:21,361 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 09:09:21,362 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 09:09:21,364 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 09:09:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 09:09:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 09:09:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 09:09:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 09:09:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 09:09:21,365 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 09:09:21,366 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 09:09:21,366 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 09:09:21,366 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 09:09:21,366 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 09:09:21,366 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 09:09:21,366 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 09:09:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 09:09:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-09 09:09:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-09 09:09:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-09 09:09:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 09:09:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 09:09:21,368 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 09:09:21,368 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 09:09:21,368 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 09:09:21,368 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 09:09:21,368 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 09:09:21,368 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 09:09:21,368 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 09:09:21,369 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 09:09:21,369 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 09:09:21,370 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 09:09:21,370 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 09:09:21,370 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 09:09:21,371 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 09:09:21,371 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 09:09:21,372 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 09:09:21,372 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 09:09:21,372 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 09:09:21,372 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 09:09:21,373 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 09:09:21,373 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 09:09:21,373 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 09:09:21,373 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 09:09:21,373 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 09:09:21,373 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 09:09:21,373 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 09:09:21,374 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 09:09:21,374 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 09:09:21,375 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 09:09:21,375 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 09:09:21,376 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 09:09:21,377 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 09:09:21,377 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 09:09:21,378 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 09:09:21,378 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 09:09:21,378 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 09:09:21,378 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 09:09:21,379 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 09:09:21,379 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 09:09:21,379 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 09:09:21,379 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 09:09:21,379 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 09:09:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 09:09:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 09:09:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 09:09:21,381 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 09:09:21,381 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 09:09:21,381 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 09:09:21,381 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 09:09:21,382 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 09:09:21,382 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 09:09:21,382 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 09:09:21,382 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 09:09:21,382 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 09:09:21,382 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 09:09:21,383 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 09:09:21,383 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 09:09:21,383 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 09:09:21,383 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 09:09:21,383 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 09:09:21,384 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 09:09:21,384 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 09:09:21,384 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 09:09:21,384 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 09:09:21,384 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 09:09:21,384 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 09:09:21,385 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 09:09:21,385 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 09:09:21,385 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 09:09:21,385 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 09:09:21,386 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 09:09:21,386 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 09:09:21,386 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 09:09:21,386 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 09:09:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 09:09:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 09:09:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 09:09:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 09:09:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 09:09:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 09:09:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 09:09:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 09:09:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 09:09:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 09:09:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 09:09:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-09 09:09:21,388 INFO L130 BoogieDeclarations]: Found specification of procedure test_fun [2021-11-09 09:09:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 09:09:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 09:09:21,389 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 09:09:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:09:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:09:21,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 09:09:21,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:09:21,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 09:09:22,190 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:09:22,190 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-09 09:09:22,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:22 BoogieIcfgContainer [2021-11-09 09:09:22,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:09:22,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:09:22,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:09:22,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:09:22,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:09:20" (1/3) ... [2021-11-09 09:09:22,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a06ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:09:22, skipping insertion in model container [2021-11-09 09:09:22,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:21" (2/3) ... [2021-11-09 09:09:22,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a06ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:09:22, skipping insertion in model container [2021-11-09 09:09:22,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:22" (3/3) ... [2021-11-09 09:09:22,201 INFO L111 eAbstractionObserver]: Analyzing ICFG array02-alloca-2.i [2021-11-09 09:09:22,206 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:09:22,207 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-11-09 09:09:22,255 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:09:22,262 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 [2021-11-09 09:09:22,262 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-11-09 09:09:22,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 43 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 09:09:22,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 09:09:22,287 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:22,288 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:22,288 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 09:09:22,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:22,294 INFO L85 PathProgramCache]: Analyzing trace with hash 306652421, now seen corresponding path program 1 times [2021-11-09 09:09:22,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:22,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972073458] [2021-11-09 09:09:22,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:22,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:22,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:22,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:22,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 09:09:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:22,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:09:22,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:22,742 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 [2021-11-09 09:09:22,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:22,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:23,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:23,078 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:23,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972073458] [2021-11-09 09:09:23,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972073458] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:23,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:23,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 09:09:23,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480782580] [2021-11-09 09:09:23,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:09:23,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:23,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:09:23,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:09:23,104 INFO L87 Difference]: Start difference. First operand has 50 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 43 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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) [2021-11-09 09:09:23,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:23,719 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2021-11-09 09:09:23,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:09:23,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 10 [2021-11-09 09:09:23,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:23,735 INFO L225 Difference]: With dead ends: 75 [2021-11-09 09:09:23,736 INFO L226 Difference]: Without dead ends: 70 [2021-11-09 09:09:23,737 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:09:23,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-09 09:09:23,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 51. [2021-11-09 09:09:23,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 45 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:09:23,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-11-09 09:09:23,791 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 10 [2021-11-09 09:09:23,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:23,791 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-11-09 09:09:23,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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) [2021-11-09 09:09:23,793 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-11-09 09:09:23,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 09:09:23,793 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:23,794 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:23,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:23,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:23,995 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 09:09:23,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:23,996 INFO L85 PathProgramCache]: Analyzing trace with hash 306652420, now seen corresponding path program 1 times [2021-11-09 09:09:23,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:23,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848247414] [2021-11-09 09:09:23,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:23,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:23,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:23,998 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:24,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 09:09:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:24,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:09:24,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:24,178 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 [2021-11-09 09:09:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:24,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:24,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:24,223 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:24,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848247414] [2021-11-09 09:09:24,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848247414] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:24,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:24,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 09:09:24,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658534139] [2021-11-09 09:09:24,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:24,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:24,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:24,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:24,227 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-11-09 09:09:24,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:24,343 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2021-11-09 09:09:24,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:24,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 10 [2021-11-09 09:09:24,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:24,345 INFO L225 Difference]: With dead ends: 50 [2021-11-09 09:09:24,345 INFO L226 Difference]: Without dead ends: 50 [2021-11-09 09:09:24,346 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:24,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-09 09:09:24,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-09 09:09:24,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 44 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:09:24,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2021-11-09 09:09:24,352 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 10 [2021-11-09 09:09:24,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:24,353 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2021-11-09 09:09:24,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-11-09 09:09:24,353 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2021-11-09 09:09:24,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-09 09:09:24,354 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:24,354 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:24,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-09 09:09:24,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:24,568 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting test_funErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 09:09:24,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:24,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1862352467, now seen corresponding path program 1 times [2021-11-09 09:09:24,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:24,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282815093] [2021-11-09 09:09:24,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:24,570 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:24,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:24,573 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:24,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 09:09:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:24,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:09:24,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:24,731 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 [2021-11-09 09:09:24,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:24,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:24,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:24,838 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:24,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282815093] [2021-11-09 09:09:24,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282815093] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:24,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:24,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 09:09:24,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949443196] [2021-11-09 09:09:24,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:09:24,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:24,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:09:24,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:24,842 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:25,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:25,074 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2021-11-09 09:09:25,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:09:25,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 2 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 [2021-11-09 09:09:25,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:25,075 INFO L225 Difference]: With dead ends: 44 [2021-11-09 09:09:25,076 INFO L226 Difference]: Without dead ends: 44 [2021-11-09 09:09:25,076 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:09:25,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-09 09:09:25,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-11-09 09:09:25,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 38 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:09:25,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2021-11-09 09:09:25,081 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 13 [2021-11-09 09:09:25,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:25,082 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2021-11-09 09:09:25,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:25,082 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2021-11-09 09:09:25,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-09 09:09:25,083 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:25,083 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:25,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:25,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:25,298 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting test_funErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 09:09:25,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:25,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1862352468, now seen corresponding path program 1 times [2021-11-09 09:09:25,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:25,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922104108] [2021-11-09 09:09:25,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:25,300 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:25,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:25,301 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:25,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 09:09:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:25,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 09:09:25,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:25,490 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 17 treesize of output 16 [2021-11-09 09:09:25,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:25,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:26,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:26,249 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:26,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922104108] [2021-11-09 09:09:26,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922104108] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:26,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:26,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-09 09:09:26,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108047302] [2021-11-09 09:09:26,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:09:26,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:26,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:09:26,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:09:26,255 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:27,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:27,040 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2021-11-09 09:09:27,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:09:27,041 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-09 09:09:27,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:27,043 INFO L225 Difference]: With dead ends: 56 [2021-11-09 09:09:27,043 INFO L226 Difference]: Without dead ends: 56 [2021-11-09 09:09:27,044 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:09:27,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-09 09:09:27,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 41. [2021-11-09 09:09:27,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 35 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:09:27,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2021-11-09 09:09:27,049 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 13 [2021-11-09 09:09:27,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:27,050 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2021-11-09 09:09:27,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:27,050 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2021-11-09 09:09:27,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-09 09:09:27,051 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:27,051 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:27,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:27,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:27,263 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 09:09:27,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:27,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1603406136, now seen corresponding path program 1 times [2021-11-09 09:09:27,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:27,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18665373] [2021-11-09 09:09:27,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:27,264 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:27,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:27,265 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:27,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 09:09:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:27,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:09:27,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:27,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:27,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:27,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:27,624 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:27,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18665373] [2021-11-09 09:09:27,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18665373] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:09:27,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:09:27,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-09 09:09:27,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327212309] [2021-11-09 09:09:27,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:09:27,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:27,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:09:27,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:09:27,627 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-11-09 09:09:27,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:27,758 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2021-11-09 09:09:27,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:09:27,759 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 14 [2021-11-09 09:09:27,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:27,760 INFO L225 Difference]: With dead ends: 49 [2021-11-09 09:09:27,760 INFO L226 Difference]: Without dead ends: 49 [2021-11-09 09:09:27,760 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:09:27,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-09 09:09:27,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2021-11-09 09:09:27,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 39 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:09:27,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2021-11-09 09:09:27,765 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 14 [2021-11-09 09:09:27,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:27,765 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2021-11-09 09:09:27,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-11-09 09:09:27,766 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2021-11-09 09:09:27,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-09 09:09:27,766 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:27,767 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:27,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:27,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:27,982 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 09:09:27,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:27,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1882214534, now seen corresponding path program 1 times [2021-11-09 09:09:27,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:27,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568833305] [2021-11-09 09:09:27,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:27,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:27,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:27,986 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:28,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 09:09:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:28,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 09:09:28,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:28,200 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 8 treesize of output 7 [2021-11-09 09:09:28,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:28,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:29,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:29,100 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:29,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568833305] [2021-11-09 09:09:29,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568833305] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:09:29,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:09:29,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-11-09 09:09:29,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285420144] [2021-11-09 09:09:29,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:09:29,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:29,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:09:29,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:09:29,105 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 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) [2021-11-09 09:09:30,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:30,410 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2021-11-09 09:09:30,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 09:09:30,411 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 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 14 [2021-11-09 09:09:30,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:30,412 INFO L225 Difference]: With dead ends: 65 [2021-11-09 09:09:30,412 INFO L226 Difference]: Without dead ends: 65 [2021-11-09 09:09:30,412 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:09:30,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-09 09:09:30,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2021-11-09 09:09:30,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 51 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:09:30,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2021-11-09 09:09:30,418 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 14 [2021-11-09 09:09:30,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:30,419 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2021-11-09 09:09:30,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 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) [2021-11-09 09:09:30,419 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2021-11-09 09:09:30,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-09 09:09:30,420 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:30,420 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] [2021-11-09 09:09:30,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:30,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:30,628 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr2ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 09:09:30,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:30,628 INFO L85 PathProgramCache]: Analyzing trace with hash -192954524, now seen corresponding path program 1 times [2021-11-09 09:09:30,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:30,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692876744] [2021-11-09 09:09:30,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:30,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:30,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:30,630 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:30,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 09:09:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:30,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:09:30,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:30,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:09:30,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:31,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:09:31,021 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:31,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692876744] [2021-11-09 09:09:31,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692876744] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:31,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:31,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-09 09:09:31,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113931530] [2021-11-09 09:09:31,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:09:31,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:31,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:09:31,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:09:31,024 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 09:09:31,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:31,205 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2021-11-09 09:09:31,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:09:31,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 20 [2021-11-09 09:09:31,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:31,208 INFO L225 Difference]: With dead ends: 76 [2021-11-09 09:09:31,209 INFO L226 Difference]: Without dead ends: 74 [2021-11-09 09:09:31,209 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:09:31,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-09 09:09:31,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 57. [2021-11-09 09:09:31,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 51 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:09:31,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2021-11-09 09:09:31,215 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 20 [2021-11-09 09:09:31,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:31,215 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2021-11-09 09:09:31,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 09:09:31,216 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2021-11-09 09:09:31,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-09 09:09:31,217 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:31,217 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:31,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:31,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:31,424 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting test_funErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 09:09:31,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:31,424 INFO L85 PathProgramCache]: Analyzing trace with hash -687390349, now seen corresponding path program 1 times [2021-11-09 09:09:31,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:31,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070954964] [2021-11-09 09:09:31,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:31,426 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:31,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:31,427 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:31,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-09 09:09:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:31,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:09:31,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:09:31,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:31,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:09:31,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:31,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070954964] [2021-11-09 09:09:31,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070954964] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:09:31,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:09:31,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-09 09:09:31,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428160253] [2021-11-09 09:09:31,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:09:31,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:31,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:09:31,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:09:31,905 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 8 states have internal predecessors, (34), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:32,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:32,176 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2021-11-09 09:09:32,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:09:32,178 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 8 states have internal predecessors, (34), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-11-09 09:09:32,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:32,179 INFO L225 Difference]: With dead ends: 79 [2021-11-09 09:09:32,179 INFO L226 Difference]: Without dead ends: 79 [2021-11-09 09:09:32,179 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:09:32,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-09 09:09:32,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2021-11-09 09:09:32,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 66 states have (on average 1.1818181818181819) internal successors, (78), 69 states have internal predecessors, (78), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 09:09:32,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2021-11-09 09:09:32,186 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 23 [2021-11-09 09:09:32,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:32,187 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2021-11-09 09:09:32,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 8 states have internal predecessors, (34), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:32,187 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2021-11-09 09:09:32,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-09 09:09:32,189 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:32,189 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:32,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:32,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:32,416 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting test_funErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 09:09:32,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:32,417 INFO L85 PathProgramCache]: Analyzing trace with hash 2019229045, now seen corresponding path program 1 times [2021-11-09 09:09:32,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:32,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474489516] [2021-11-09 09:09:32,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:32,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:32,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:32,431 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:32,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-09 09:09:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:32,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-09 09:09:32,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:32,647 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 8 treesize of output 7 [2021-11-09 09:09:33,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:09:33,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:34,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:09:34,353 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:34,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474489516] [2021-11-09 09:09:34,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474489516] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:09:34,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:09:34,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-09 09:09:34,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482122871] [2021-11-09 09:09:34,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 09:09:34,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:34,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 09:09:34,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-09 09:09:34,355 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:36,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:36,042 INFO L93 Difference]: Finished difference Result 125 states and 143 transitions. [2021-11-09 09:09:36,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 09:09:36,044 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-11-09 09:09:36,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:36,045 INFO L225 Difference]: With dead ends: 125 [2021-11-09 09:09:36,045 INFO L226 Difference]: Without dead ends: 125 [2021-11-09 09:09:36,046 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:09:36,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-09 09:09:36,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 118. [2021-11-09 09:09:36,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 108 states have (on average 1.1944444444444444) internal successors, (129), 111 states have internal predecessors, (129), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-09 09:09:36,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2021-11-09 09:09:36,057 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 23 [2021-11-09 09:09:36,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:36,057 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2021-11-09 09:09:36,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:36,058 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2021-11-09 09:09:36,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-09 09:09:36,059 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:36,059 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] [2021-11-09 09:09:36,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:36,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:36,272 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr2ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 09:09:36,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:36,272 INFO L85 PathProgramCache]: Analyzing trace with hash 357737120, now seen corresponding path program 1 times [2021-11-09 09:09:36,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:36,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457641855] [2021-11-09 09:09:36,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:36,274 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:36,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:36,275 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:36,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-09 09:09:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:36,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:09:36,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:36,568 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 [2021-11-09 09:09:36,726 INFO L354 Elim1Store]: treesize reduction 16, result has 42.9 percent of original size [2021-11-09 09:09:36,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 25 [2021-11-09 09:09:37,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:09:37,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:41,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:09:41,345 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:41,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457641855] [2021-11-09 09:09:41,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457641855] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:41,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:41,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-11-09 09:09:41,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134701634] [2021-11-09 09:09:41,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:09:41,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:41,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:09:41,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=49, Unknown=2, NotChecked=0, Total=72 [2021-11-09 09:09:41,348 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 states have internal predecessors, (42), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-09 09:09:41,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:41,642 INFO L93 Difference]: Finished difference Result 117 states and 135 transitions. [2021-11-09 09:09:41,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:09:41,644 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 states have internal predecessors, (42), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 26 [2021-11-09 09:09:41,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:41,645 INFO L225 Difference]: With dead ends: 117 [2021-11-09 09:09:41,645 INFO L226 Difference]: Without dead ends: 88 [2021-11-09 09:09:41,645 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=34, Invalid=74, Unknown=2, NotChecked=0, Total=110 [2021-11-09 09:09:41,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-09 09:09:41,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-11-09 09:09:41,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 82 states have (on average 1.170731707317073) internal successors, (96), 83 states have internal predecessors, (96), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:41,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2021-11-09 09:09:41,651 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 26 [2021-11-09 09:09:41,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:41,652 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2021-11-09 09:09:41,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 states have internal predecessors, (42), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-09 09:09:41,652 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2021-11-09 09:09:41,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-09 09:09:41,653 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:41,653 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:41,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:41,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:41,866 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 09:09:41,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:41,867 INFO L85 PathProgramCache]: Analyzing trace with hash 149782479, now seen corresponding path program 2 times [2021-11-09 09:09:41,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:41,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030387191] [2021-11-09 09:09:41,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:09:41,867 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:41,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:41,870 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:41,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-09 09:09:42,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:09:42,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:09:42,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 09:09:42,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:42,199 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 8 treesize of output 7 [2021-11-09 09:09:43,005 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:43,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:45,063 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:45,063 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:45,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030387191] [2021-11-09 09:09:45,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030387191] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:09:45,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:09:45,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-11-09 09:09:45,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164462167] [2021-11-09 09:09:45,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:09:45,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:45,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:09:45,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:09:45,065 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 18 states have internal predecessors, (43), 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) [2021-11-09 09:09:53,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:53,218 INFO L93 Difference]: Finished difference Result 120 states and 138 transitions. [2021-11-09 09:09:53,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 09:09:53,219 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 18 states have internal predecessors, (43), 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 26 [2021-11-09 09:09:53,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:53,220 INFO L225 Difference]: With dead ends: 120 [2021-11-09 09:09:53,220 INFO L226 Difference]: Without dead ends: 120 [2021-11-09 09:09:53,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=327, Invalid=665, Unknown=0, NotChecked=0, Total=992 [2021-11-09 09:09:53,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-09 09:09:53,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 112. [2021-11-09 09:09:53,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 106 states have (on average 1.1886792452830188) internal successors, (126), 107 states have internal predecessors, (126), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:09:53,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 130 transitions. [2021-11-09 09:09:53,228 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 130 transitions. Word has length 26 [2021-11-09 09:09:53,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:53,229 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 130 transitions. [2021-11-09 09:09:53,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 18 states have internal predecessors, (43), 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) [2021-11-09 09:09:53,229 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 130 transitions. [2021-11-09 09:09:53,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-09 09:09:53,231 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:53,231 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:53,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:53,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:09:53,443 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting test_funErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 09:09:53,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:53,444 INFO L85 PathProgramCache]: Analyzing trace with hash -2067791423, now seen corresponding path program 2 times [2021-11-09 09:09:53,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:09:53,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585016535] [2021-11-09 09:09:53,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:09:53,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:09:53,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:09:53,445 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:09:53,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-09 09:09:53,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:09:53,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:09:53,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-09 09:09:53,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:53,858 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 8 treesize of output 7 [2021-11-09 09:09:54,862 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:54,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:09:58,124 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:58,124 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:09:58,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585016535] [2021-11-09 09:09:58,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585016535] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:09:58,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:09:58,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2021-11-09 09:09:58,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032664845] [2021-11-09 09:09:58,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-09 09:09:58,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:09:58,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-09 09:09:58,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:09:58,127 INFO L87 Difference]: Start difference. First operand 112 states and 130 transitions. Second operand has 22 states, 20 states have (on average 3.55) internal successors, (71), 20 states have internal predecessors, (71), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:10:07,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:10:07,226 INFO L93 Difference]: Finished difference Result 215 states and 244 transitions. [2021-11-09 09:10:07,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:10:07,227 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.55) internal successors, (71), 20 states have internal predecessors, (71), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-11-09 09:10:07,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:10:07,229 INFO L225 Difference]: With dead ends: 215 [2021-11-09 09:10:07,229 INFO L226 Difference]: Without dead ends: 196 [2021-11-09 09:10:07,230 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=199, Invalid=1207, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 09:10:07,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-09 09:10:07,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 128. [2021-11-09 09:10:07,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 121 states have (on average 1.1735537190082646) internal successors, (142), 122 states have internal predecessors, (142), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:10:07,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2021-11-09 09:10:07,238 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 41 [2021-11-09 09:10:07,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:10:07,239 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2021-11-09 09:10:07,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.55) internal successors, (71), 20 states have internal predecessors, (71), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:10:07,239 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2021-11-09 09:10:07,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-09 09:10:07,242 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:10:07,242 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:10:07,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-09 09:10:07,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:10:07,454 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting test_funErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 09:10:07,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:10:07,455 INFO L85 PathProgramCache]: Analyzing trace with hash 66444706, now seen corresponding path program 3 times [2021-11-09 09:10:07,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:10:07,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062131788] [2021-11-09 09:10:07,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:10:07,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:10:07,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:10:07,456 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:10:07,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-09 09:10:07,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-09 09:10:07,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:10:07,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-09 09:10:07,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:10:07,932 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 8 treesize of output 7 [2021-11-09 09:10:10,197 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 46 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-09 09:10:10,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:10:49,471 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-09 09:10:49,472 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:10:49,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062131788] [2021-11-09 09:10:49,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062131788] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:10:49,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:10:49,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-11-09 09:10:49,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298329080] [2021-11-09 09:10:49,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-09 09:10:49,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:10:49,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-09 09:10:49,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=643, Unknown=6, NotChecked=0, Total=756 [2021-11-09 09:10:49,475 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand has 28 states, 25 states have (on average 2.92) internal successors, (73), 26 states have internal predecessors, (73), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:10:57,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:10:57,123 INFO L93 Difference]: Finished difference Result 165 states and 187 transitions. [2021-11-09 09:10:57,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:10:57,127 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.92) internal successors, (73), 26 states have internal predecessors, (73), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-11-09 09:10:57,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:10:57,129 INFO L225 Difference]: With dead ends: 165 [2021-11-09 09:10:57,129 INFO L226 Difference]: Without dead ends: 133 [2021-11-09 09:10:57,130 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=164, Invalid=886, Unknown=6, NotChecked=0, Total=1056 [2021-11-09 09:10:57,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-09 09:10:57,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 128. [2021-11-09 09:10:57,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 121 states have (on average 1.165289256198347) internal successors, (141), 122 states have internal predecessors, (141), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:10:57,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 146 transitions. [2021-11-09 09:10:57,138 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 146 transitions. Word has length 51 [2021-11-09 09:10:57,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:10:57,138 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 146 transitions. [2021-11-09 09:10:57,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.92) internal successors, (73), 26 states have internal predecessors, (73), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:10:57,139 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 146 transitions. [2021-11-09 09:10:57,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-09 09:10:57,142 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:10:57,142 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:10:57,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-09 09:10:57,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:10:57,356 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 09:10:57,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:10:57,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2124468767, now seen corresponding path program 3 times [2021-11-09 09:10:57,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:10:57,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858942212] [2021-11-09 09:10:57,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:10:57,359 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:10:57,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:10:57,360 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:10:57,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-09 09:10:58,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-09 09:10:58,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:10:58,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-09 09:10:58,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:10:58,227 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 8 treesize of output 7 [2021-11-09 09:11:00,954 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:11:00,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:11:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:11:09,948 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:11:09,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858942212] [2021-11-09 09:11:09,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858942212] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:11:09,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:11:09,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2021-11-09 09:11:09,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199541102] [2021-11-09 09:11:09,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-09 09:11:09,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:11:09,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-09 09:11:09,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=637, Unknown=0, NotChecked=0, Total=870 [2021-11-09 09:11:09,951 INFO L87 Difference]: Start difference. First operand 128 states and 146 transitions. Second operand has 30 states, 29 states have (on average 3.1379310344827585) internal successors, (91), 30 states have internal predecessors, (91), 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) [2021-11-09 09:11:23,622 WARN L207 SmtUtils]: Spent 7.25 s on a formula simplification that was a NOOP. DAG size: 138 [2021-11-09 09:11:38,863 WARN L207 SmtUtils]: Spent 14.50 s on a formula simplification. DAG size of input: 134 DAG size of output: 125 [2021-11-09 09:11:49,119 WARN L207 SmtUtils]: Spent 7.74 s on a formula simplification that was a NOOP. DAG size: 128 [2021-11-09 09:12:00,737 WARN L207 SmtUtils]: Spent 11.09 s on a formula simplification. DAG size of input: 122 DAG size of output: 114 [2021-11-09 09:12:08,561 WARN L207 SmtUtils]: Spent 5.13 s on a formula simplification that was a NOOP. DAG size: 116 [2021-11-09 09:12:18,717 WARN L207 SmtUtils]: Spent 9.55 s on a formula simplification. DAG size of input: 110 DAG size of output: 103 [2021-11-09 09:12:31,631 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2021-11-09 09:13:08,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:13:08,205 INFO L93 Difference]: Finished difference Result 193 states and 223 transitions. [2021-11-09 09:13:08,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-09 09:13:08,207 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.1379310344827585) internal successors, (91), 30 states have internal predecessors, (91), 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 50 [2021-11-09 09:13:08,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:13:08,208 INFO L225 Difference]: With dead ends: 193 [2021-11-09 09:13:08,209 INFO L226 Difference]: Without dead ends: 193 [2021-11-09 09:13:08,210 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 102.5s TimeCoverageRelationStatistics Valid=1212, Invalid=2570, Unknown=0, NotChecked=0, Total=3782 [2021-11-09 09:13:08,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-09 09:13:08,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 176. [2021-11-09 09:13:08,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 169 states have (on average 1.1893491124260356) internal successors, (201), 170 states have internal predecessors, (201), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:13:08,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 206 transitions. [2021-11-09 09:13:08,219 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 206 transitions. Word has length 50 [2021-11-09 09:13:08,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:13:08,220 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 206 transitions. [2021-11-09 09:13:08,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.1379310344827585) internal successors, (91), 30 states have internal predecessors, (91), 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) [2021-11-09 09:13:08,220 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 206 transitions. [2021-11-09 09:13:08,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-09 09:13:08,223 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:13:08,223 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:13:08,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-09 09:13:08,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:13:08,436 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting test_funErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 09:13:08,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:13:08,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1775799512, now seen corresponding path program 4 times [2021-11-09 09:13:08,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:13:08,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761365976] [2021-11-09 09:13:08,437 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 09:13:08,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:13:08,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:13:08,438 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:13:08,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-09 09:13:09,215 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 09:13:09,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:13:09,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-09 09:13:09,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:13:09,288 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 8 treesize of output 7 [2021-11-09 09:13:11,201 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-09 09:13:11,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:13:16,617 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-09 09:13:16,618 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:13:16,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761365976] [2021-11-09 09:13:16,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761365976] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:13:16,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:13:16,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-11-09 09:13:16,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249171528] [2021-11-09 09:13:16,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-09 09:13:16,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:13:16,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-09 09:13:16,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:13:16,621 INFO L87 Difference]: Start difference. First operand 176 states and 206 transitions. Second operand has 22 states, 21 states have (on average 3.380952380952381) internal successors, (71), 20 states have internal predecessors, (71), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:13:31,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:13:31,944 INFO L93 Difference]: Finished difference Result 309 states and 357 transitions. [2021-11-09 09:13:31,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-09 09:13:31,947 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.380952380952381) internal successors, (71), 20 states have internal predecessors, (71), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-11-09 09:13:31,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:13:31,949 INFO L225 Difference]: With dead ends: 309 [2021-11-09 09:13:31,949 INFO L226 Difference]: Without dead ends: 309 [2021-11-09 09:13:31,951 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=400, Invalid=1322, Unknown=0, NotChecked=0, Total=1722 [2021-11-09 09:13:31,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-09 09:13:31,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 244. [2021-11-09 09:13:31,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 238 states have (on average 1.1764705882352942) internal successors, (280), 239 states have internal predecessors, (280), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:13:31,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 284 transitions. [2021-11-09 09:13:31,960 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 284 transitions. Word has length 53 [2021-11-09 09:13:31,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:13:31,961 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 284 transitions. [2021-11-09 09:13:31,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.380952380952381) internal successors, (71), 20 states have internal predecessors, (71), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:13:31,962 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 284 transitions. [2021-11-09 09:13:31,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-09 09:13:31,964 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:13:31,964 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:13:31,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-09 09:13:32,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:13:32,176 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting test_funErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 09:13:32,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:13:32,176 INFO L85 PathProgramCache]: Analyzing trace with hash -141043821, now seen corresponding path program 5 times [2021-11-09 09:13:32,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:13:32,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046123815] [2021-11-09 09:13:32,177 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 09:13:32,177 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:13:32,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:13:32,178 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:13:32,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-09 09:13:33,169 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-11-09 09:13:33,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:13:33,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-09 09:13:33,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:13:33,261 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 8 treesize of output 7 [2021-11-09 09:13:36,685 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 132 proven. 155 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-09 09:13:36,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:13:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:13:50,940 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:13:50,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046123815] [2021-11-09 09:13:50,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046123815] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:13:50,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:13:50,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 36 [2021-11-09 09:13:50,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761655589] [2021-11-09 09:13:50,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-09 09:13:50,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:13:50,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-09 09:13:50,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1097, Unknown=0, NotChecked=0, Total=1260 [2021-11-09 09:13:50,944 INFO L87 Difference]: Start difference. First operand 244 states and 284 transitions. Second operand has 36 states, 34 states have (on average 4.352941176470588) internal successors, (148), 34 states have internal predecessors, (148), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:14:47,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:14:47,517 INFO L93 Difference]: Finished difference Result 473 states and 540 transitions. [2021-11-09 09:14:47,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-09 09:14:47,519 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 4.352941176470588) internal successors, (148), 34 states have internal predecessors, (148), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2021-11-09 09:14:47,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:14:47,522 INFO L225 Difference]: With dead ends: 473 [2021-11-09 09:14:47,523 INFO L226 Difference]: Without dead ends: 424 [2021-11-09 09:14:47,525 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 40.8s TimeCoverageRelationStatistics Valid=505, Invalid=4325, Unknown=0, NotChecked=0, Total=4830 [2021-11-09 09:14:47,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-09 09:14:47,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 260. [2021-11-09 09:14:47,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 253 states have (on average 1.1699604743083003) internal successors, (296), 254 states have internal predecessors, (296), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:14:47,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 301 transitions. [2021-11-09 09:14:47,538 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 301 transitions. Word has length 85 [2021-11-09 09:14:47,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:14:47,538 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 301 transitions. [2021-11-09 09:14:47,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 4.352941176470588) internal successors, (148), 34 states have internal predecessors, (148), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:14:47,539 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 301 transitions. [2021-11-09 09:14:47,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-09 09:14:47,541 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:14:47,542 INFO L513 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:14:47,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-09 09:14:47,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:14:47,760 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting test_funErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 09:14:47,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:14:47,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1239946868, now seen corresponding path program 6 times [2021-11-09 09:14:47,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:14:47,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020280980] [2021-11-09 09:14:47,761 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 09:14:47,762 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:14:47,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:14:47,763 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:14:47,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-09 09:14:49,406 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-11-09 09:14:49,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:14:49,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-09 09:14:49,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:14:49,483 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 8 treesize of output 7 [2021-11-09 09:14:55,556 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 260 proven. 28 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-09 09:14:55,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:15:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 228 proven. 60 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-09 09:15:22,175 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:15:22,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020280980] [2021-11-09 09:15:22,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020280980] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:15:22,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:15:22,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2021-11-09 09:15:22,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958292455] [2021-11-09 09:15:22,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-09 09:15:22,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:15:22,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-09 09:15:22,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1190, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 09:15:22,180 INFO L87 Difference]: Start difference. First operand 260 states and 301 transitions. Second operand has 38 states, 36 states have (on average 3.111111111111111) internal successors, (112), 36 states have internal predecessors, (112), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:15:35,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:15:35,822 INFO L93 Difference]: Finished difference Result 323 states and 371 transitions. [2021-11-09 09:15:35,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:15:35,825 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 3.111111111111111) internal successors, (112), 36 states have internal predecessors, (112), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2021-11-09 09:15:35,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:15:35,827 INFO L225 Difference]: With dead ends: 323 [2021-11-09 09:15:35,827 INFO L226 Difference]: Without dead ends: 260 [2021-11-09 09:15:35,829 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=372, Invalid=1884, Unknown=0, NotChecked=0, Total=2256 [2021-11-09 09:15:35,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-09 09:15:35,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2021-11-09 09:15:35,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 253 states have (on average 1.1660079051383399) internal successors, (295), 254 states have internal predecessors, (295), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:15:35,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 300 transitions. [2021-11-09 09:15:35,839 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 300 transitions. Word has length 95 [2021-11-09 09:15:35,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:15:35,840 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 300 transitions. [2021-11-09 09:15:35,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 3.111111111111111) internal successors, (112), 36 states have internal predecessors, (112), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:15:35,841 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 300 transitions. [2021-11-09 09:15:35,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-09 09:15:35,843 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:15:35,843 INFO L513 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:15:35,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-09 09:15:36,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:15:36,060 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting test_funErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 09:15:36,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:15:36,060 INFO L85 PathProgramCache]: Analyzing trace with hash 167957393, now seen corresponding path program 7 times [2021-11-09 09:15:36,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:15:36,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632342530] [2021-11-09 09:15:36,061 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 09:15:36,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:15:36,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:15:36,063 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:15:36,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-09 09:15:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:15:37,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-09 09:15:37,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:15:37,658 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 8 treesize of output 7 [2021-11-09 09:15:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 176 proven. 185 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-09 09:15:41,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:16:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:16:00,486 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:16:00,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632342530] [2021-11-09 09:16:00,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632342530] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:16:00,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:16:00,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23] total 41 [2021-11-09 09:16:00,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721916375] [2021-11-09 09:16:00,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-09 09:16:00,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:16:00,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-09 09:16:00,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1454, Unknown=0, NotChecked=0, Total=1640 [2021-11-09 09:16:00,494 INFO L87 Difference]: Start difference. First operand 260 states and 300 transitions. Second operand has 41 states, 39 states have (on average 4.358974358974359) internal successors, (170), 39 states have internal predecessors, (170), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:17:15,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:17:15,028 INFO L93 Difference]: Finished difference Result 518 states and 589 transitions. [2021-11-09 09:17:15,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-09 09:17:15,030 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 4.358974358974359) internal successors, (170), 39 states have internal predecessors, (170), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2021-11-09 09:17:15,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:17:15,034 INFO L225 Difference]: With dead ends: 518 [2021-11-09 09:17:15,034 INFO L226 Difference]: Without dead ends: 439 [2021-11-09 09:17:15,037 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1181 ImplicationChecksByTransitivity, 50.8s TimeCoverageRelationStatistics Valid=576, Invalid=5586, Unknown=0, NotChecked=0, Total=6162 [2021-11-09 09:17:15,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-09 09:17:15,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 274. [2021-11-09 09:17:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 267 states have (on average 1.1610486891385767) internal successors, (310), 268 states have internal predecessors, (310), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:17:15,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 315 transitions. [2021-11-09 09:17:15,050 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 315 transitions. Word has length 99 [2021-11-09 09:17:15,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:17:15,050 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 315 transitions. [2021-11-09 09:17:15,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 4.358974358974359) internal successors, (170), 39 states have internal predecessors, (170), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:17:15,051 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 315 transitions. [2021-11-09 09:17:15,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-09 09:17:15,053 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:17:15,053 INFO L513 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:17:15,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-09 09:17:15,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:17:15,273 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, test_funErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-09 09:17:15,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:17:15,274 INFO L85 PathProgramCache]: Analyzing trace with hash 123127813, now seen corresponding path program 4 times [2021-11-09 09:17:15,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:17:15,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86684644] [2021-11-09 09:17:15,275 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 09:17:15,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:17:15,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:17:15,276 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:17:15,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cd46f4b-49ab-4f76-961d-ee9334886abf/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-09 09:17:16,682 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 09:17:16,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:17:16,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-09 09:17:16,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:17:16,748 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 8 treesize of output 7 [2021-11-09 09:17:23,385 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:17:23,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:17:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:17:53,965 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:17:53,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86684644] [2021-11-09 09:17:53,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86684644] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:17:53,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:17:53,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2021-11-09 09:17:53,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270173991] [2021-11-09 09:17:53,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-09 09:17:53,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:17:53,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-09 09:17:53,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=854, Invalid=2452, Unknown=0, NotChecked=0, Total=3306 [2021-11-09 09:17:53,969 INFO L87 Difference]: Start difference. First operand 274 states and 315 transitions. Second operand has 58 states, 57 states have (on average 3.280701754385965) internal successors, (187), 58 states have internal predecessors, (187), 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) [2021-11-09 09:19:01,414 WARN L207 SmtUtils]: Spent 44.53 s on a formula simplification that was a NOOP. DAG size: 256 [2021-11-09 09:20:22,034 WARN L207 SmtUtils]: Spent 1.31 m on a formula simplification. DAG size of input: 252 DAG size of output: 252 [2021-11-09 09:21:09,430 WARN L207 SmtUtils]: Spent 38.20 s on a formula simplification that was a NOOP. DAG size: 246 [2021-11-09 09:22:32,394 WARN L207 SmtUtils]: Spent 1.33 m on a formula simplification. DAG size of input: 241 DAG size of output: 241