./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0 --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 428ed4ebbacd235ea719e6f888a7e28edd9cc4f57416ea2a11ce399dc2c47283 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:31:12,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:31:12,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:31:12,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:31:12,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:31:12,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:31:12,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:31:12,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:31:12,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:31:12,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:31:12,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:31:12,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:31:12,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:31:12,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:31:12,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:31:12,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:31:12,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:31:12,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:31:12,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:31:12,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:31:12,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:31:12,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:31:12,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:31:12,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:31:12,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:31:12,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:31:12,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:31:12,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:31:12,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:31:12,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:31:12,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:31:12,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:31:12,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:31:12,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:31:12,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:31:12,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:31:12,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:31:12,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:31:12,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:31:12,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:31:12,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:31:12,379 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-22 15:31:12,404 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:31:12,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:31:12,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:31:12,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:31:12,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:31:12,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:31:12,407 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:31:12,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:31:12,408 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:31:12,408 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 15:31:12,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:31:12,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:31:12,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:31:12,409 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-22 15:31:12,409 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-22 15:31:12,410 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-22 15:31:12,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:31:12,410 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 15:31:12,410 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:31:12,411 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:31:12,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:31:12,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:31:12,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:31:12,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:31:12,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:31:12,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:31:12,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:31:12,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:31:12,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:31:12,413 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_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 428ed4ebbacd235ea719e6f888a7e28edd9cc4f57416ea2a11ce399dc2c47283 [2021-11-22 15:31:12,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:31:12,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:31:12,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:31:12,692 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:31:12,694 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:31:12,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2021-11-22 15:31:12,757 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/data/f9326c934/ba4af543c8e1464caffc21e75796a0ca/FLAG00f81c793 [2021-11-22 15:31:13,277 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:31:13,278 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2021-11-22 15:31:13,301 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/data/f9326c934/ba4af543c8e1464caffc21e75796a0ca/FLAG00f81c793 [2021-11-22 15:31:13,574 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/data/f9326c934/ba4af543c8e1464caffc21e75796a0ca [2021-11-22 15:31:13,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:31:13,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:31:13,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:31:13,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:31:13,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:31:13,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:31:13" (1/1) ... [2021-11-22 15:31:13,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b1ddba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:31:13, skipping insertion in model container [2021-11-22 15:31:13,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:31:13" (1/1) ... [2021-11-22 15:31:13,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:31:13,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:31:14,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:31:14,152 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) [2021-11-22 15:31:14,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@12dd9e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:31:14, skipping insertion in model container [2021-11-22 15:31:14,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:31:14,154 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-22 15:31:14,156 INFO L158 Benchmark]: Toolchain (without parser) took 576.17ms. Allocated memory is still 98.6MB. Free memory was 58.9MB in the beginning and 71.3MB in the end (delta: -12.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-22 15:31:14,158 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 98.6MB. Free memory was 77.0MB in the beginning and 76.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:31:14,160 INFO L158 Benchmark]: CACSL2BoogieTranslator took 572.14ms. Allocated memory is still 98.6MB. Free memory was 58.8MB in the beginning and 71.3MB in the end (delta: -12.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-22 15:31:14,161 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 98.6MB. Free memory was 77.0MB in the beginning and 76.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 572.14ms. Allocated memory is still 98.6MB. Free memory was 58.8MB in the beginning and 71.3MB in the end (delta: -12.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0 --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 428ed4ebbacd235ea719e6f888a7e28edd9cc4f57416ea2a11ce399dc2c47283 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:31:16,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:31:16,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:31:16,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:31:16,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:31:16,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:31:16,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:31:16,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:31:16,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:31:16,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:31:16,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:31:16,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:31:16,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:31:16,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:31:16,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:31:16,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:31:16,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:31:16,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:31:16,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:31:16,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:31:16,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:31:16,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:31:16,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:31:16,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:31:16,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:31:16,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:31:16,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:31:16,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:31:16,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:31:16,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:31:16,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:31:16,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:31:16,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:31:16,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:31:16,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:31:16,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:31:16,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:31:16,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:31:16,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:31:16,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:31:16,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:31:16,533 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-22 15:31:16,558 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:31:16,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:31:16,561 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:31:16,562 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:31:16,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:31:16,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:31:16,564 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:31:16,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:31:16,564 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:31:16,565 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 15:31:16,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:31:16,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:31:16,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:31:16,566 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-22 15:31:16,567 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-22 15:31:16,567 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-22 15:31:16,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:31:16,567 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 15:31:16,567 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-22 15:31:16,568 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-22 15:31:16,568 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:31:16,568 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:31:16,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:31:16,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:31:16,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:31:16,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:31:16,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:31:16,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:31:16,570 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-22 15:31:16,570 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-22 15:31:16,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:31:16,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-22 15:31:16,571 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_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 428ed4ebbacd235ea719e6f888a7e28edd9cc4f57416ea2a11ce399dc2c47283 [2021-11-22 15:31:16,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:31:17,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:31:17,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:31:17,004 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:31:17,005 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:31:17,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2021-11-22 15:31:17,087 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/data/bac19b82d/054df73fe6c14418876780d0d84e630c/FLAG6c7ea00e2 [2021-11-22 15:31:17,733 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:31:17,734 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2021-11-22 15:31:17,761 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/data/bac19b82d/054df73fe6c14418876780d0d84e630c/FLAG6c7ea00e2 [2021-11-22 15:31:18,017 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/data/bac19b82d/054df73fe6c14418876780d0d84e630c [2021-11-22 15:31:18,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:31:18,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:31:18,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:31:18,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:31:18,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:31:18,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:31:18" (1/1) ... [2021-11-22 15:31:18,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5898cc3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:31:18, skipping insertion in model container [2021-11-22 15:31:18,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:31:18" (1/1) ... [2021-11-22 15:31:18,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:31:18,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:31:18,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:31:18,492 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-22 15:31:18,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:31:18,548 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:31:18,560 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:31:18,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:31:18,675 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:31:18,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:31:18 WrapperNode [2021-11-22 15:31:18,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:31:18,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:31:18,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:31:18,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:31:18,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:31:18" (1/1) ... [2021-11-22 15:31:18,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:31:18" (1/1) ... [2021-11-22 15:31:18,762 INFO L137 Inliner]: procedures = 167, calls = 72, calls flagged for inlining = 32, calls inlined = 7, statements flattened = 39 [2021-11-22 15:31:18,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:31:18,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:31:18,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:31:18,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:31:18,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:31:18" (1/1) ... [2021-11-22 15:31:18,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:31:18" (1/1) ... [2021-11-22 15:31:18,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:31:18" (1/1) ... [2021-11-22 15:31:18,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:31:18" (1/1) ... [2021-11-22 15:31:18,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:31:18" (1/1) ... [2021-11-22 15:31:18,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:31:18" (1/1) ... [2021-11-22 15:31:18,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:31:18" (1/1) ... [2021-11-22 15:31:18,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:31:18,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:31:18,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:31:18,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:31:18,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:31:18" (1/1) ... [2021-11-22 15:31:18,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:31:18,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:31:18,831 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:31:18,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:31:18,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 15:31:18,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:31:18,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 15:31:18,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 15:31:18,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:31:18,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:31:18,969 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:31:18,971 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:31:19,099 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:31:19,105 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:31:19,105 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 15:31:19,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:31:19 BoogieIcfgContainer [2021-11-22 15:31:19,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:31:19,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:31:19,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:31:19,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:31:19,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:31:18" (1/3) ... [2021-11-22 15:31:19,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631da591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:31:19, skipping insertion in model container [2021-11-22 15:31:19,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:31:18" (2/3) ... [2021-11-22 15:31:19,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631da591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:31:19, skipping insertion in model container [2021-11-22 15:31:19,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:31:19" (3/3) ... [2021-11-22 15:31:19,115 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test8_2.i [2021-11-22 15:31:19,120 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:31:19,120 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-22 15:31:19,199 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:31:19,206 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 [2021-11-22 15:31:19,207 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-22 15:31:19,221 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:31:19,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:31:19,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:31:19,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:31:19,234 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-22 15:31:19,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:31:19,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1804965381, now seen corresponding path program 1 times [2021-11-22 15:31:19,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:31:19,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453478915] [2021-11-22 15:31:19,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:31:19,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:31:19,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:31:19,266 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:31:19,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-22 15:31:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:31:19,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:31:19,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:31:19,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:31:19,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:31:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:31:19,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:31:19,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453478915] [2021-11-22 15:31:19,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453478915] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:31:19,451 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:31:19,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 15:31:19,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428942303] [2021-11-22 15:31:19,454 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:31:19,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:31:19,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:31:19,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:31:19,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:31:19,496 INFO L87 Difference]: Start difference. First operand has 26 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:31:19,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:31:19,543 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-11-22 15:31:19,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:31:19,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-22 15:31:19,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:31:19,554 INFO L225 Difference]: With dead ends: 24 [2021-11-22 15:31:19,554 INFO L226 Difference]: Without dead ends: 22 [2021-11-22 15:31:19,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:31:19,560 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 42 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:31:19,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 20 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:31:19,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-22 15:31:19,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-22 15:31:19,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:31:19,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-11-22 15:31:19,593 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 7 [2021-11-22 15:31:19,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:31:19,593 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-11-22 15:31:19,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:31:19,594 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-11-22 15:31:19,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 15:31:19,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:31:19,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:31:19,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:31:19,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:31:19,804 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-22 15:31:19,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:31:19,807 INFO L85 PathProgramCache]: Analyzing trace with hash 119352011, now seen corresponding path program 1 times [2021-11-22 15:31:19,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:31:19,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61449179] [2021-11-22 15:31:19,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:31:19,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:31:19,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:31:19,830 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:31:19,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-22 15:31:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:31:19,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:31:19,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:31:19,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:31:19,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:31:20,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:31:20,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:31:20,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61449179] [2021-11-22 15:31:20,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61449179] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:31:20,040 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:31:20,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-22 15:31:20,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811795163] [2021-11-22 15:31:20,040 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:31:20,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:31:20,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:31:20,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:31:20,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:31:20,043 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:31:20,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:31:20,205 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2021-11-22 15:31:20,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:31:20,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-22 15:31:20,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:31:20,207 INFO L225 Difference]: With dead ends: 37 [2021-11-22 15:31:20,207 INFO L226 Difference]: Without dead ends: 37 [2021-11-22 15:31:20,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:31:20,209 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 65 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:31:20,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 32 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:31:20,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-22 15:31:20,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2021-11-22 15:31:20,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.24) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:31:20,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-11-22 15:31:20,216 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 8 [2021-11-22 15:31:20,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:31:20,216 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-11-22 15:31:20,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:31:20,217 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-11-22 15:31:20,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 15:31:20,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:31:20,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:31:20,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:31:20,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:31:20,429 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-22 15:31:20,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:31:20,429 INFO L85 PathProgramCache]: Analyzing trace with hash -595054905, now seen corresponding path program 1 times [2021-11-22 15:31:20,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:31:20,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812046025] [2021-11-22 15:31:20,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:31:20,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:31:20,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:31:20,433 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:31:20,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-22 15:31:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:31:20,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:31:20,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:31:20,516 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 [2021-11-22 15:31:20,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:31:20,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:31:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:31:20,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:31:20,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812046025] [2021-11-22 15:31:20,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812046025] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:31:20,584 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:31:20,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 15:31:20,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497937089] [2021-11-22 15:31:20,585 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:31:20,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:31:20,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:31:20,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:31:20,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:31:20,586 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:31:20,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:31:20,648 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-11-22 15:31:20,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:31:20,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 15:31:20,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:31:20,650 INFO L225 Difference]: With dead ends: 28 [2021-11-22 15:31:20,650 INFO L226 Difference]: Without dead ends: 28 [2021-11-22 15:31:20,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:31:20,652 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:31:20,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 36 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:31:20,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-22 15:31:20,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-22 15:31:20,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.2) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:31:20,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-11-22 15:31:20,657 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 9 [2021-11-22 15:31:20,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:31:20,658 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-11-22 15:31:20,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:31:20,658 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-11-22 15:31:20,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 15:31:20,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:31:20,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:31:20,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:31:20,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:31:20,870 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-22 15:31:20,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:31:20,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1179952457, now seen corresponding path program 1 times [2021-11-22 15:31:20,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:31:20,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102869445] [2021-11-22 15:31:20,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:31:20,872 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:31:20,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:31:20,875 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:31:20,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-22 15:31:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:31:20,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:31:20,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:31:20,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:31:20,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:31:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:31:21,003 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:31:21,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102869445] [2021-11-22 15:31:21,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102869445] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:31:21,003 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:31:21,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 15:31:21,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658371832] [2021-11-22 15:31:21,004 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:31:21,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:31:21,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:31:21,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:31:21,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:31:21,006 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:31:21,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:31:21,045 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2021-11-22 15:31:21,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:31:21,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 15:31:21,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:31:21,047 INFO L225 Difference]: With dead ends: 28 [2021-11-22 15:31:21,047 INFO L226 Difference]: Without dead ends: 28 [2021-11-22 15:31:21,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:31:21,049 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 17 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:31:21,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 37 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:31:21,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-22 15:31:21,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2021-11-22 15:31:21,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:31:21,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-11-22 15:31:21,054 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 9 [2021-11-22 15:31:21,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:31:21,055 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-11-22 15:31:21,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:31:21,055 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-11-22 15:31:21,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 15:31:21,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:31:21,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:31:21,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:31:21,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:31:21,267 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-22 15:31:21,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:31:21,268 INFO L85 PathProgramCache]: Analyzing trace with hash 299891404, now seen corresponding path program 1 times [2021-11-22 15:31:21,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:31:21,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646118503] [2021-11-22 15:31:21,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:31:21,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:31:21,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:31:21,270 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:31:21,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-22 15:31:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:31:21,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:31:21,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:31:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:31:21,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:31:21,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:31:21,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:31:21,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646118503] [2021-11-22 15:31:21,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646118503] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:31:21,390 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:31:21,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-22 15:31:21,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830407183] [2021-11-22 15:31:21,392 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:31:21,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:31:21,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:31:21,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:31:21,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:31:21,394 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:31:21,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:31:21,417 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2021-11-22 15:31:21,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:31:21,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-22 15:31:21,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:31:21,419 INFO L225 Difference]: With dead ends: 27 [2021-11-22 15:31:21,419 INFO L226 Difference]: Without dead ends: 19 [2021-11-22 15:31:21,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:31:21,429 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:31:21,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:31:21,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-22 15:31:21,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-22 15:31:21,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:31:21,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2021-11-22 15:31:21,440 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 11 [2021-11-22 15:31:21,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:31:21,441 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2021-11-22 15:31:21,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:31:21,441 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2021-11-22 15:31:21,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 15:31:21,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:31:21,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:31:21,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-22 15:31:21,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:31:21,662 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-11-22 15:31:21,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:31:21,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1911768813, now seen corresponding path program 1 times [2021-11-22 15:31:21,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:31:21,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749700389] [2021-11-22 15:31:21,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:31:21,664 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:31:21,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:31:21,665 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:31:21,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-22 15:31:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:31:21,717 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:31:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:31:21,768 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-22 15:31:21,769 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-22 15:31:21,772 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (6 of 7 remaining) [2021-11-22 15:31:21,774 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE (5 of 7 remaining) [2021-11-22 15:31:21,774 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (4 of 7 remaining) [2021-11-22 15:31:21,774 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (3 of 7 remaining) [2021-11-22 15:31:21,775 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (2 of 7 remaining) [2021-11-22 15:31:21,775 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (1 of 7 remaining) [2021-11-22 15:31:21,775 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2021-11-22 15:31:21,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-22 15:31:21,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:31:21,978 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-22 15:31:21,982 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 15:31:22,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 03:31:22 BoogieIcfgContainer [2021-11-22 15:31:22,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 15:31:22,006 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 15:31:22,006 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 15:31:22,006 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 15:31:22,007 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:31:19" (3/4) ... [2021-11-22 15:31:22,009 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-22 15:31:22,046 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/witness.graphml [2021-11-22 15:31:22,046 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 15:31:22,047 INFO L158 Benchmark]: Toolchain (without parser) took 4026.39ms. Allocated memory was 60.8MB in the beginning and 92.3MB in the end (delta: 31.5MB). Free memory was 36.5MB in the beginning and 61.0MB in the end (delta: -24.4MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2021-11-22 15:31:22,047 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 60.8MB. Free memory was 41.3MB in the beginning and 41.2MB in the end (delta: 42.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:31:22,048 INFO L158 Benchmark]: CACSL2BoogieTranslator took 654.93ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 36.3MB in the beginning and 52.8MB in the end (delta: -16.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-22 15:31:22,048 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.68ms. Allocated memory is still 73.4MB. Free memory was 52.8MB in the beginning and 50.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:31:22,048 INFO L158 Benchmark]: Boogie Preprocessor took 25.88ms. Allocated memory is still 73.4MB. Free memory was 50.4MB in the beginning and 49.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:31:22,049 INFO L158 Benchmark]: RCFGBuilder took 317.43ms. Allocated memory is still 73.4MB. Free memory was 49.0MB in the beginning and 38.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 15:31:22,049 INFO L158 Benchmark]: TraceAbstraction took 2896.84ms. Allocated memory was 73.4MB in the beginning and 92.3MB in the end (delta: 18.9MB). Free memory was 38.0MB in the beginning and 63.1MB in the end (delta: -25.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:31:22,050 INFO L158 Benchmark]: Witness Printer took 40.00ms. Allocated memory is still 92.3MB. Free memory was 63.1MB in the beginning and 61.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:31:22,052 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 60.8MB. Free memory was 41.3MB in the beginning and 41.2MB in the end (delta: 42.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 654.93ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 36.3MB in the beginning and 52.8MB in the end (delta: -16.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.68ms. Allocated memory is still 73.4MB. Free memory was 52.8MB in the beginning and 50.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.88ms. Allocated memory is still 73.4MB. Free memory was 50.4MB in the beginning and 49.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 317.43ms. Allocated memory is still 73.4MB. Free memory was 49.0MB in the beginning and 38.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2896.84ms. Allocated memory was 73.4MB in the beginning and 92.3MB in the end (delta: 18.9MB). Free memory was 38.0MB in the beginning and 63.1MB in the end (delta: -25.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 40.00ms. Allocated memory is still 92.3MB. Free memory was 63.1MB in the beginning and 61.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 762]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L757] int *a8; VAL [a8={0:0}, ldv_global_msg_list={1:0}] [L771] CALL entry_point() [L765] CALL alloc_8() [L759] CALL, EXPR ldv_malloc(sizeof(int)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L759] RET, EXPR ldv_malloc(sizeof(int)) [L759] a8 = (int *)ldv_malloc(sizeof(int)) [L765] RET alloc_8() [L766] CALL free_8() [L762] COND TRUE \read(*a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) [L766] RET free_8() [L767] CALL free_8() [L762] COND TRUE \read(*a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 129 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 129 mSDsluCounter, 158 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 64 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 105 IncrementalHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 94 mSDtfsCounter, 105 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 331 SizeOfPredicates, 5 NumberOfNonLiveVariables, 166 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-22 15:31:22,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d301e68-9e5a-4ed8-9b7c-1a70eb9af406/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free)