./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.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_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/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_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/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_d7266c6f-c1b9-453e-8265-d051b6cdae47/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 bcce9a9edb6d3d97e1dc81d42ff33dae1a3a6c5a4c6632dbb9f71fe2bbff6634 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:20:04,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:20:04,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:20:04,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:20:04,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:20:04,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:20:04,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:20:04,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:20:04,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:20:04,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:20:04,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:20:04,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:20:04,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:20:04,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:20:04,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:20:04,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:20:04,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:20:04,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:20:04,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:20:04,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:20:04,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:20:04,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:20:04,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:20:04,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:20:04,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:20:04,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:20:04,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:20:04,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:20:04,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:20:04,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:20:04,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:20:04,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:20:04,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:20:04,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:20:04,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:20:04,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:20:04,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:20:04,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:20:04,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:20:04,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:20:04,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:20:04,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-22 16:20:04,330 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:20:04,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:20:04,330 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:20:04,330 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:20:04,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:20:04,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:20:04,332 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:20:04,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:20:04,333 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:20:04,333 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 16:20:04,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 16:20:04,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:20:04,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:20:04,333 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-22 16:20:04,334 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-22 16:20:04,334 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-22 16:20:04,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:20:04,334 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 16:20:04,334 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:20:04,335 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:20:04,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:20:04,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:20:04,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:20:04,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:20:04,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:20:04,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:20:04,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 16:20:04,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 16:20:04,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:20:04,336 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_d7266c6f-c1b9-453e-8265-d051b6cdae47/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcce9a9edb6d3d97e1dc81d42ff33dae1a3a6c5a4c6632dbb9f71fe2bbff6634 [2021-11-22 16:20:04,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:20:04,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:20:04,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:20:04,643 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:20:04,644 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:20:04,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2021-11-22 16:20:04,708 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/data/343ed8537/664b142c648c49b1843c4ecdf183fc68/FLAG8b791d9b1 [2021-11-22 16:20:05,268 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:20:05,269 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2021-11-22 16:20:05,293 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/data/343ed8537/664b142c648c49b1843c4ecdf183fc68/FLAG8b791d9b1 [2021-11-22 16:20:05,532 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/data/343ed8537/664b142c648c49b1843c4ecdf183fc68 [2021-11-22 16:20:05,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:20:05,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:20:05,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:20:05,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:20:05,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:20:05,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:20:05" (1/1) ... [2021-11-22 16:20:05,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ecacf35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:05, skipping insertion in model container [2021-11-22 16:20:05,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:20:05" (1/1) ... [2021-11-22 16:20:05,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:20:05,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:20:06,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:20:06,105 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 16:20:06,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4842b473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:06, skipping insertion in model container [2021-11-22 16:20:06,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:20:06,107 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-22 16:20:06,110 INFO L158 Benchmark]: Toolchain (without parser) took 570.40ms. Allocated memory is still 115.3MB. Free memory was 75.5MB in the beginning and 85.3MB in the end (delta: -9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 16:20:06,110 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 115.3MB. Free memory is still 93.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:20:06,112 INFO L158 Benchmark]: CACSL2BoogieTranslator took 555.05ms. Allocated memory is still 115.3MB. Free memory was 75.3MB in the beginning and 85.3MB in the end (delta: -10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 16:20:06,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 115.3MB. Free memory is still 93.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 555.05ms. Allocated memory is still 115.3MB. Free memory was 75.3MB in the beginning and 85.3MB in the end (delta: -10.0MB). Peak memory consumption was 10.5MB. 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_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/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_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/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_d7266c6f-c1b9-453e-8265-d051b6cdae47/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 bcce9a9edb6d3d97e1dc81d42ff33dae1a3a6c5a4c6632dbb9f71fe2bbff6634 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:20:08,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:20:08,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:20:08,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:20:08,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:20:08,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:20:08,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:20:08,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:20:08,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:20:08,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:20:08,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:20:08,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:20:08,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:20:08,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:20:08,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:20:08,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:20:08,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:20:08,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:20:08,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:20:08,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:20:08,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:20:08,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:20:08,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:20:08,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:20:08,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:20:08,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:20:08,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:20:08,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:20:08,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:20:08,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:20:08,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:20:08,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:20:08,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:20:08,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:20:08,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:20:08,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:20:08,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:20:08,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:20:08,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:20:08,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:20:08,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:20:08,675 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-22 16:20:08,706 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:20:08,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:20:08,707 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:20:08,707 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:20:08,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:20:08,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:20:08,709 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:20:08,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:20:08,710 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:20:08,710 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 16:20:08,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 16:20:08,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:20:08,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:20:08,712 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-22 16:20:08,712 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-22 16:20:08,712 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-22 16:20:08,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:20:08,712 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 16:20:08,713 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-22 16:20:08,713 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-22 16:20:08,713 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:20:08,713 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:20:08,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:20:08,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:20:08,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:20:08,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:20:08,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:20:08,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:20:08,715 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-22 16:20:08,715 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-22 16:20:08,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:20:08,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-22 16:20:08,716 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_d7266c6f-c1b9-453e-8265-d051b6cdae47/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcce9a9edb6d3d97e1dc81d42ff33dae1a3a6c5a4c6632dbb9f71fe2bbff6634 [2021-11-22 16:20:09,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:20:09,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:20:09,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:20:09,157 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:20:09,158 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:20:09,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2021-11-22 16:20:09,242 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/data/1d48ab356/c3e783628c0b47d2a7a952a588459d08/FLAGe0785c1ad [2021-11-22 16:20:09,923 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:20:09,924 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2021-11-22 16:20:09,947 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/data/1d48ab356/c3e783628c0b47d2a7a952a588459d08/FLAGe0785c1ad [2021-11-22 16:20:10,175 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/data/1d48ab356/c3e783628c0b47d2a7a952a588459d08 [2021-11-22 16:20:10,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:20:10,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:20:10,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:20:10,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:20:10,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:20:10,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:20:10" (1/1) ... [2021-11-22 16:20:10,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ea2f55a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:10, skipping insertion in model container [2021-11-22 16:20:10,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:20:10" (1/1) ... [2021-11-22 16:20:10,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:20:10,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:20:10,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:20:10,828 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-22 16:20:10,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:20:10,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:20:10,922 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:20:10,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:20:11,038 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:20:11,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:11 WrapperNode [2021-11-22 16:20:11,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:20:11,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:20:11,041 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:20:11,041 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:20:11,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:11" (1/1) ... [2021-11-22 16:20:11,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:11" (1/1) ... [2021-11-22 16:20:11,104 INFO L137 Inliner]: procedures = 170, calls = 78, calls flagged for inlining = 33, calls inlined = 8, statements flattened = 70 [2021-11-22 16:20:11,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:20:11,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:20:11,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:20:11,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:20:11,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:11" (1/1) ... [2021-11-22 16:20:11,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:11" (1/1) ... [2021-11-22 16:20:11,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:11" (1/1) ... [2021-11-22 16:20:11,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:11" (1/1) ... [2021-11-22 16:20:11,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:11" (1/1) ... [2021-11-22 16:20:11,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:11" (1/1) ... [2021-11-22 16:20:11,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:11" (1/1) ... [2021-11-22 16:20:11,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:20:11,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:20:11,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:20:11,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:20:11,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:11" (1/1) ... [2021-11-22 16:20:11,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:20:11,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:20:11,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:20:11,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:20:11,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 16:20:11,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 16:20:11,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 16:20:11,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 16:20:11,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 16:20:11,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 16:20:11,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 16:20:11,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:20:11,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:20:11,448 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:20:11,449 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:20:11,725 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:20:11,732 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:20:11,737 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 16:20:11,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:20:11 BoogieIcfgContainer [2021-11-22 16:20:11,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:20:11,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:20:11,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:20:11,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:20:11,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:20:10" (1/3) ... [2021-11-22 16:20:11,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4f58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:20:11, skipping insertion in model container [2021-11-22 16:20:11,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:20:11" (2/3) ... [2021-11-22 16:20:11,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4f58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:20:11, skipping insertion in model container [2021-11-22 16:20:11,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:20:11" (3/3) ... [2021-11-22 16:20:11,752 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test7-2.i [2021-11-22 16:20:11,759 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:20:11,759 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-22 16:20:11,832 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:20:11,841 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 16:20:11,841 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-22 16:20:11,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 25 states have (on average 1.64) internal successors, (41), 36 states have internal predecessors, (41), 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 16:20:11,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 16:20:11,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:11,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:11,880 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-22 16:20:11,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:11,887 INFO L85 PathProgramCache]: Analyzing trace with hash 119408646, now seen corresponding path program 1 times [2021-11-22 16:20:11,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:20:11,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667928925] [2021-11-22 16:20:11,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:11,902 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:20:11,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:20:11,906 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:20:11,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-22 16:20:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:12,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:20:12,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:20:12,146 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 16:20:12,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:20:12,174 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 16:20:12,175 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:20:12,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667928925] [2021-11-22 16:20:12,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667928925] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:12,177 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:12,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 16:20:12,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352665940] [2021-11-22 16:20:12,181 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:12,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:20:12,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:20:12,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:20:12,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:20:12,228 INFO L87 Difference]: Start difference. First operand has 37 states, 25 states have (on average 1.64) internal successors, (41), 36 states have internal predecessors, (41), 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, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:12,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:12,329 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2021-11-22 16:20:12,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:20:12,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-22 16:20:12,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:12,341 INFO L225 Difference]: With dead ends: 71 [2021-11-22 16:20:12,341 INFO L226 Difference]: Without dead ends: 67 [2021-11-22 16:20:12,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 16:20:12,353 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 71 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:12,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 121 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:20:12,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-22 16:20:12,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 37. [2021-11-22 16:20:12,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 36 states have internal predecessors, (41), 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 16:20:12,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-11-22 16:20:12,415 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2021-11-22 16:20:12,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:12,416 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-11-22 16:20:12,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:12,416 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-11-22 16:20:12,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 16:20:12,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:12,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:12,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-22 16:20:12,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:20:12,645 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-22 16:20:12,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:12,646 INFO L85 PathProgramCache]: Analyzing trace with hash 119443416, now seen corresponding path program 1 times [2021-11-22 16:20:12,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:20:12,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752141073] [2021-11-22 16:20:12,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:12,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:20:12,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:20:12,651 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:20:12,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-22 16:20:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:12,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:20:12,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:20:12,780 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 16:20:12,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:20:12,803 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 16:20:12,803 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:20:12,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752141073] [2021-11-22 16:20:12,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752141073] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:12,804 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:12,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 16:20:12,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753668990] [2021-11-22 16:20:12,804 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:12,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:20:12,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:20:12,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:20:12,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:20:12,807 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:12,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:12,835 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2021-11-22 16:20:12,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:20:12,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-22 16:20:12,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:12,838 INFO L225 Difference]: With dead ends: 36 [2021-11-22 16:20:12,838 INFO L226 Difference]: Without dead ends: 36 [2021-11-22 16:20:12,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 16:20:12,840 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 64 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:12,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 37 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:20:12,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-22 16:20:12,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-11-22 16:20:12,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 35 states have internal predecessors, (40), 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 16:20:12,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-11-22 16:20:12,846 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 8 [2021-11-22 16:20:12,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:12,846 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-11-22 16:20:12,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:12,847 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-11-22 16:20:12,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 16:20:12,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:12,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:12,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-22 16:20:13,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:20:13,059 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-22 16:20:13,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:13,059 INFO L85 PathProgramCache]: Analyzing trace with hash 176666948, now seen corresponding path program 1 times [2021-11-22 16:20:13,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:20:13,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826527802] [2021-11-22 16:20:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:13,060 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:20:13,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:20:13,061 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:20:13,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-22 16:20:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:13,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 16:20:13,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:20:13,159 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 16:20:13,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:20:13,203 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 16:20:13,204 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:20:13,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826527802] [2021-11-22 16:20:13,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826527802] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:13,204 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:13,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-22 16:20:13,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994570111] [2021-11-22 16:20:13,205 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:13,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 16:20:13,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:20:13,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 16:20:13,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:20:13,206 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:13,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:13,300 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-11-22 16:20:13,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 16:20:13,301 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-22 16:20:13,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:13,301 INFO L225 Difference]: With dead ends: 52 [2021-11-22 16:20:13,302 INFO L226 Difference]: Without dead ends: 52 [2021-11-22 16:20:13,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-22 16:20:13,303 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 39 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:13,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 207 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:20:13,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-22 16:20:13,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2021-11-22 16:20:13,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.5) internal successors, (42), 37 states have internal predecessors, (42), 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 16:20:13,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-11-22 16:20:13,309 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 8 [2021-11-22 16:20:13,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:13,310 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-11-22 16:20:13,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:13,310 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-11-22 16:20:13,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 16:20:13,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:13,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:13,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-22 16:20:13,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:20:13,522 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-22 16:20:13,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:13,523 INFO L85 PathProgramCache]: Analyzing trace with hash -592221333, now seen corresponding path program 1 times [2021-11-22 16:20:13,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:20:13,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588535483] [2021-11-22 16:20:13,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:13,523 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:20:13,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:20:13,526 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:20:13,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-22 16:20:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:13,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 16:20:13,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:20:13,700 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 16:20:13,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:20:13,754 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 16:20:13,755 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:20:13,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588535483] [2021-11-22 16:20:13,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588535483] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:13,755 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:13,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-22 16:20:13,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819695235] [2021-11-22 16:20:13,756 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:13,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 16:20:13,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:20:13,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 16:20:13,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:20:13,757 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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 16:20:13,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:13,902 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2021-11-22 16:20:13,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 16:20:13,903 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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) Word has length 9 [2021-11-22 16:20:13,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:13,904 INFO L225 Difference]: With dead ends: 67 [2021-11-22 16:20:13,904 INFO L226 Difference]: Without dead ends: 67 [2021-11-22 16:20:13,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-22 16:20:13,906 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 147 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:13,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 81 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:20:13,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-22 16:20:13,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 37. [2021-11-22 16:20:13,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 36 states have internal predecessors, (41), 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 16:20:13,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-11-22 16:20:13,913 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 9 [2021-11-22 16:20:13,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:13,913 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-11-22 16:20:13,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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 16:20:13,914 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-11-22 16:20:13,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 16:20:13,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:13,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:13,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-22 16:20:14,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:20:14,126 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-22 16:20:14,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:14,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1178992070, now seen corresponding path program 1 times [2021-11-22 16:20:14,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:20:14,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046410189] [2021-11-22 16:20:14,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:14,128 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:20:14,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:20:14,129 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:20:14,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-22 16:20:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:14,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:20:14,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:20:14,215 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 16:20:14,250 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 16:20:14,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:20:14,304 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 16:20:14,305 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:20:14,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046410189] [2021-11-22 16:20:14,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046410189] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:14,305 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:14,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 16:20:14,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281860050] [2021-11-22 16:20:14,306 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:14,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:20:14,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:20:14,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:20:14,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:20:14,308 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:14,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:14,448 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2021-11-22 16:20:14,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:20:14,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-22 16:20:14,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:14,450 INFO L225 Difference]: With dead ends: 60 [2021-11-22 16:20:14,451 INFO L226 Difference]: Without dead ends: 60 [2021-11-22 16:20:14,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 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 16:20:14,452 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 44 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:14,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 71 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:20:14,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-22 16:20:14,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 44. [2021-11-22 16:20:14,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 43 states have internal predecessors, (50), 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 16:20:14,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2021-11-22 16:20:14,463 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 10 [2021-11-22 16:20:14,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:14,464 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2021-11-22 16:20:14,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:14,464 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2021-11-22 16:20:14,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 16:20:14,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:14,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:14,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-22 16:20:14,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:20:14,666 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-22 16:20:14,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:14,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1178944307, now seen corresponding path program 1 times [2021-11-22 16:20:14,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:20:14,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552340223] [2021-11-22 16:20:14,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:14,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:20:14,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:20:14,668 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:20:14,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-22 16:20:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:14,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 16:20:14,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:20:14,750 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 16:20:14,790 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-22 16:20:14,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 19 [2021-11-22 16:20:14,821 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 16:20:14,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:20:14,872 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 16:20:14,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:20:14,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552340223] [2021-11-22 16:20:14,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552340223] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:14,873 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:14,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-22 16:20:14,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456506787] [2021-11-22 16:20:14,873 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:14,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:20:14,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:20:14,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:20:14,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:20:14,875 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:14,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:14,912 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2021-11-22 16:20:14,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:20:14,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-22 16:20:14,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:14,913 INFO L225 Difference]: With dead ends: 46 [2021-11-22 16:20:14,913 INFO L226 Difference]: Without dead ends: 46 [2021-11-22 16:20:14,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 2 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 16:20:14,915 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 21 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:14,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 30 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:20:14,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-22 16:20:14,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2021-11-22 16:20:14,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.4) internal successors, (49), 42 states have internal predecessors, (49), 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 16:20:14,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2021-11-22 16:20:14,921 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 10 [2021-11-22 16:20:14,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:14,921 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2021-11-22 16:20:14,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:14,922 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2021-11-22 16:20:14,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 16:20:14,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:14,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:14,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-22 16:20:15,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:20:15,134 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-22 16:20:15,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:15,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1178944306, now seen corresponding path program 1 times [2021-11-22 16:20:15,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:20:15,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492473511] [2021-11-22 16:20:15,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:15,135 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:20:15,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:20:15,137 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:20:15,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-22 16:20:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:15,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 16:20:15,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:20:15,218 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 16:20:15,258 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 16:20:15,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-22 16:20:15,331 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 16:20:15,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:20:15,581 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 16:20:15,581 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:20:15,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492473511] [2021-11-22 16:20:15,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492473511] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:15,581 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:15,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-22 16:20:15,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136620087] [2021-11-22 16:20:15,582 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:15,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:20:15,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:20:15,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:20:15,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:20:15,584 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 16:20:15,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:15,624 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2021-11-22 16:20:15,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:20:15,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 10 [2021-11-22 16:20:15,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:15,629 INFO L225 Difference]: With dead ends: 62 [2021-11-22 16:20:15,629 INFO L226 Difference]: Without dead ends: 62 [2021-11-22 16:20:15,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:20:15,630 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 95 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:15,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 78 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 5 Unchecked, 0.0s Time] [2021-11-22 16:20:15,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-22 16:20:15,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2021-11-22 16:20:15,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 41 states have internal predecessors, (48), 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 16:20:15,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2021-11-22 16:20:15,636 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 10 [2021-11-22 16:20:15,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:15,636 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2021-11-22 16:20:15,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 16:20:15,636 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2021-11-22 16:20:15,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 16:20:15,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:15,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:15,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-22 16:20:15,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:20:15,848 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-22 16:20:15,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:15,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2021353082, now seen corresponding path program 1 times [2021-11-22 16:20:15,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:20:15,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153861054] [2021-11-22 16:20:15,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:15,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:20:15,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:20:15,851 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:20:15,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-22 16:20:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:15,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 16:20:15,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:20:15,999 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 16:20:15,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:20:16,072 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 16:20:16,072 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:20:16,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153861054] [2021-11-22 16:20:16,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153861054] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:16,073 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:16,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-22 16:20:16,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600572756] [2021-11-22 16:20:16,073 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:16,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:20:16,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:20:16,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:20:16,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:20:16,074 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 16:20:16,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:16,171 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2021-11-22 16:20:16,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:20:16,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 10 [2021-11-22 16:20:16,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:16,172 INFO L225 Difference]: With dead ends: 60 [2021-11-22 16:20:16,172 INFO L226 Difference]: Without dead ends: 55 [2021-11-22 16:20:16,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:20:16,173 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 42 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:16,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 146 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 19 Unchecked, 0.1s Time] [2021-11-22 16:20:16,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-22 16:20:16,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2021-11-22 16:20:16,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 45 states have internal predecessors, (51), 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 16:20:16,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2021-11-22 16:20:16,177 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 10 [2021-11-22 16:20:16,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:16,177 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2021-11-22 16:20:16,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 16:20:16,178 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2021-11-22 16:20:16,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 16:20:16,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:16,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:16,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-22 16:20:16,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:20:16,388 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-22 16:20:16,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:16,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1988338696, now seen corresponding path program 1 times [2021-11-22 16:20:16,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:20:16,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447458350] [2021-11-22 16:20:16,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:16,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:20:16,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:20:16,389 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:20:16,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-22 16:20:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:16,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 16:20:16,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:20:16,506 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 16:20:16,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:20:16,551 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 16:20:16,552 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:20:16,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447458350] [2021-11-22 16:20:16,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447458350] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:16,552 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:16,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 16:20:16,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125211397] [2021-11-22 16:20:16,553 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:16,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:20:16,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:20:16,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:20:16,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:20:16,554 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:16,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:16,585 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-11-22 16:20:16,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:20:16,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-22 16:20:16,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:16,590 INFO L225 Difference]: With dead ends: 34 [2021-11-22 16:20:16,590 INFO L226 Difference]: Without dead ends: 32 [2021-11-22 16:20:16,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 16:20:16,593 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:16,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 88 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:20:16,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-22 16:20:16,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-11-22 16:20:16,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 31 states have internal predecessors, (34), 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 16:20:16,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2021-11-22 16:20:16,601 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 10 [2021-11-22 16:20:16,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:16,602 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2021-11-22 16:20:16,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:16,602 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2021-11-22 16:20:16,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 16:20:16,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:16,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:16,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-22 16:20:16,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:20:16,815 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-22 16:20:16,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:16,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1320771049, now seen corresponding path program 1 times [2021-11-22 16:20:16,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:20:16,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070551558] [2021-11-22 16:20:16,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:16,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:20:16,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:20:16,818 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:20:16,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-22 16:20:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:16,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 16:20:16,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:20:16,941 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 16:20:16,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:20:16,984 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-22 16:20:16,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2021-11-22 16:20:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:20:17,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:20:17,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070551558] [2021-11-22 16:20:17,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070551558] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:17,017 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:17,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 16:20:17,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412465809] [2021-11-22 16:20:17,017 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:17,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:20:17,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:20:17,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:20:17,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:20:17,019 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:17,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:17,088 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2021-11-22 16:20:17,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:20:17,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-22 16:20:17,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:17,089 INFO L225 Difference]: With dead ends: 32 [2021-11-22 16:20:17,089 INFO L226 Difference]: Without dead ends: 32 [2021-11-22 16:20:17,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:20:17,090 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 43 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:17,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 48 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:20:17,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-22 16:20:17,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-11-22 16:20:17,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 states have internal predecessors, (33), 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 16:20:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-11-22 16:20:17,093 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 14 [2021-11-22 16:20:17,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:17,094 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-11-22 16:20:17,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:17,094 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-11-22 16:20:17,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 16:20:17,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:17,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:17,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-22 16:20:17,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:20:17,295 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-22 16:20:17,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:17,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1320771048, now seen corresponding path program 1 times [2021-11-22 16:20:17,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:20:17,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226450836] [2021-11-22 16:20:17,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:17,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:20:17,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:20:17,298 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:20:17,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-22 16:20:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:17,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 16:20:17,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:20:17,574 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 16:20:17,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:20:17,748 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 16:20:17,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2021-11-22 16:20:18,059 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 16:20:18,059 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:20:18,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226450836] [2021-11-22 16:20:18,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226450836] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:18,060 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:18,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-22 16:20:18,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740611131] [2021-11-22 16:20:18,060 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:18,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 16:20:18,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:20:18,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 16:20:18,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:20:18,061 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 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 16:20:18,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:18,197 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2021-11-22 16:20:18,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:20:18,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 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 14 [2021-11-22 16:20:18,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:18,198 INFO L225 Difference]: With dead ends: 35 [2021-11-22 16:20:18,198 INFO L226 Difference]: Without dead ends: 35 [2021-11-22 16:20:18,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-22 16:20:18,200 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 48 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:18,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 91 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:20:18,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-22 16:20:18,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2021-11-22 16:20:18,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 29 states have internal predecessors, (32), 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 16:20:18,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-11-22 16:20:18,204 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 14 [2021-11-22 16:20:18,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:18,204 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-11-22 16:20:18,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 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 16:20:18,205 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-11-22 16:20:18,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-22 16:20:18,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:18,205 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:18,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-22 16:20:18,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:20:18,417 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-22 16:20:18,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:18,417 INFO L85 PathProgramCache]: Analyzing trace with hash 457292946, now seen corresponding path program 1 times [2021-11-22 16:20:18,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:20:18,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851809003] [2021-11-22 16:20:18,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:18,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:20:18,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:20:18,420 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:20:18,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-22 16:20:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:18,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 16:20:18,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:20:20,843 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 16:20:20,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:20:25,194 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 16:20:25,195 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:20:25,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851809003] [2021-11-22 16:20:25,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851809003] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:25,195 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:25,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-22 16:20:25,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445625636] [2021-11-22 16:20:25,195 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:25,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 16:20:25,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:20:25,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 16:20:25,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=99, Unknown=3, NotChecked=0, Total=132 [2021-11-22 16:20:25,197 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 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 16:20:25,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:25,380 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-11-22 16:20:25,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 16:20:25,381 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 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 15 [2021-11-22 16:20:25,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:25,381 INFO L225 Difference]: With dead ends: 34 [2021-11-22 16:20:25,381 INFO L226 Difference]: Without dead ends: 26 [2021-11-22 16:20:25,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=44, Invalid=135, Unknown=3, NotChecked=0, Total=182 [2021-11-22 16:20:25,383 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 59 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:25,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 65 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 16 Unchecked, 0.1s Time] [2021-11-22 16:20:25,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-22 16:20:25,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-11-22 16:20:25,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 24 states have internal predecessors, (25), 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 16:20:25,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-11-22 16:20:25,385 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 15 [2021-11-22 16:20:25,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:25,386 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-11-22 16:20:25,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 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 16:20:25,386 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-11-22 16:20:25,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-22 16:20:25,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:25,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:25,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-22 16:20:25,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:20:25,587 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-22 16:20:25,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:25,588 INFO L85 PathProgramCache]: Analyzing trace with hash 2005770458, now seen corresponding path program 1 times [2021-11-22 16:20:25,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:20:25,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713166927] [2021-11-22 16:20:25,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:25,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:20:25,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:20:25,589 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:20:25,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-22 16:20:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:25,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 16:20:25,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:20:25,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-11-22 16:20:25,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-22 16:20:25,834 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 16:20:25,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:20:25,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-22 16:20:25,967 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 16:20:25,967 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:20:25,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713166927] [2021-11-22 16:20:25,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713166927] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:25,968 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:25,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-22 16:20:25,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902074263] [2021-11-22 16:20:25,968 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:25,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 16:20:25,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:20:25,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 16:20:25,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:20:25,969 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:26,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:26,126 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2021-11-22 16:20:26,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 16:20:26,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-22 16:20:26,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:26,127 INFO L225 Difference]: With dead ends: 28 [2021-11-22 16:20:26,128 INFO L226 Difference]: Without dead ends: 28 [2021-11-22 16:20:26,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-22 16:20:26,128 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 71 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:26,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 60 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:20:26,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-22 16:20:26,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2021-11-22 16:20:26,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 21 states have (on average 1.1428571428571428) 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 16:20:26,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-11-22 16:20:26,131 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 15 [2021-11-22 16:20:26,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:26,131 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-11-22 16:20:26,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:26,131 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-11-22 16:20:26,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-22 16:20:26,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:26,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:26,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-22 16:20:26,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:20:26,332 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-22 16:20:26,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:26,333 INFO L85 PathProgramCache]: Analyzing trace with hash 2049743257, now seen corresponding path program 1 times [2021-11-22 16:20:26,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:20:26,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480781597] [2021-11-22 16:20:26,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:26,334 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:20:26,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:20:26,335 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:20:26,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-22 16:20:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:26,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:20:26,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:20:26,422 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 16:20:26,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:20:26,449 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 16:20:26,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:20:26,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480781597] [2021-11-22 16:20:26,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480781597] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:26,469 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:26,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 16:20:26,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449146914] [2021-11-22 16:20:26,470 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:26,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:20:26,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:20:26,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:20:26,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:20:26,471 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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 16:20:26,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:26,485 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2021-11-22 16:20:26,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:20:26,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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 16 [2021-11-22 16:20:26,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:26,487 INFO L225 Difference]: With dead ends: 24 [2021-11-22 16:20:26,487 INFO L226 Difference]: Without dead ends: 24 [2021-11-22 16:20:26,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 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 16:20:26,488 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:26,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 40 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:20:26,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-22 16:20:26,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-22 16:20:26,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 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 16:20:26,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2021-11-22 16:20:26,492 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 16 [2021-11-22 16:20:26,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:26,493 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2021-11-22 16:20:26,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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 16:20:26,493 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2021-11-22 16:20:26,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-22 16:20:26,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:26,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:26,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-22 16:20:26,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:20:26,713 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-22 16:20:26,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:26,713 INFO L85 PathProgramCache]: Analyzing trace with hash 2049342135, now seen corresponding path program 1 times [2021-11-22 16:20:26,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:20:26,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231169561] [2021-11-22 16:20:26,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:26,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:20:26,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:20:26,715 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:20:26,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-22 16:20:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:26,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-22 16:20:26,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:20:26,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 15 [2021-11-22 16:20:27,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-22 16:20:27,120 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 16:20:27,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:20:27,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-22 16:20:27,452 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 16:20:27,452 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:20:27,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231169561] [2021-11-22 16:20:27,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231169561] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:27,453 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:27,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-22 16:20:27,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029744028] [2021-11-22 16:20:27,453 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:27,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 16:20:27,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:20:27,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 16:20:27,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-22 16:20:27,454 INFO L87 Difference]: Start difference. First operand 24 states and 23 transitions. Second operand has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 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 16:20:27,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:27,821 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-11-22 16:20:27,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 16:20:27,821 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 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 16 [2021-11-22 16:20:27,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:27,822 INFO L225 Difference]: With dead ends: 23 [2021-11-22 16:20:27,822 INFO L226 Difference]: Without dead ends: 23 [2021-11-22 16:20:27,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2021-11-22 16:20:27,823 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 72 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:27,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 51 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 55 Invalid, 0 Unknown, 3 Unchecked, 0.1s Time] [2021-11-22 16:20:27,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-22 16:20:27,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-22 16:20:27,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 22 states have internal predecessors, (22), 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 16:20:27,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2021-11-22 16:20:27,826 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 16 [2021-11-22 16:20:27,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:27,826 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2021-11-22 16:20:27,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 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 16:20:27,827 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2021-11-22 16:20:27,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-22 16:20:27,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:27,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:27,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-22 16:20:28,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:20:28,038 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-22 16:20:28,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:28,045 INFO L85 PathProgramCache]: Analyzing trace with hash -894903172, now seen corresponding path program 1 times [2021-11-22 16:20:28,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:20:28,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524044943] [2021-11-22 16:20:28,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:28,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:20:28,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:20:28,051 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:20:28,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-22 16:20:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:28,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 16:20:28,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:20:28,149 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 16:20:28,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 19 [2021-11-22 16:20:28,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-11-22 16:20:28,339 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 16:20:28,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:20:28,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2021-11-22 16:20:28,644 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 16:20:28,645 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:20:28,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524044943] [2021-11-22 16:20:28,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524044943] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:28,645 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:28,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-22 16:20:28,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955467988] [2021-11-22 16:20:28,646 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:28,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 16:20:28,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:20:28,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 16:20:28,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-22 16:20:28,647 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 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 16:20:28,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:28,831 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-11-22 16:20:28,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 16:20:28,832 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 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 17 [2021-11-22 16:20:28,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:28,832 INFO L225 Difference]: With dead ends: 22 [2021-11-22 16:20:28,832 INFO L226 Difference]: Without dead ends: 22 [2021-11-22 16:20:28,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-22 16:20:28,833 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 36 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:28,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 44 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 11 Unchecked, 0.1s Time] [2021-11-22 16:20:28,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-22 16:20:28,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-22 16:20:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0) internal successors, (21), 21 states have internal predecessors, (21), 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 16:20:28,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2021-11-22 16:20:28,836 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 17 [2021-11-22 16:20:28,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:28,836 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2021-11-22 16:20:28,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 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 16:20:28,836 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2021-11-22 16:20:28,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-22 16:20:28,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:20:28,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:28,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-22 16:20:29,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:20:29,045 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 8 more)] === [2021-11-22 16:20:29,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:20:29,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1507212163, now seen corresponding path program 1 times [2021-11-22 16:20:29,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:20:29,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243729285] [2021-11-22 16:20:29,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:20:29,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:20:29,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:20:29,047 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:20:29,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-22 16:20:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:20:29,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-22 16:20:29,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:20:29,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 30 treesize of output 26 [2021-11-22 16:20:29,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2021-11-22 16:20:31,719 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 16:20:31,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:20:33,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2021-11-22 16:20:52,328 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 16:20:52,328 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:20:52,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243729285] [2021-11-22 16:20:52,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243729285] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:20:52,329 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:20:52,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 17 [2021-11-22 16:20:52,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551031118] [2021-11-22 16:20:52,329 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:20:52,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-22 16:20:52,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:20:52,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-22 16:20:52,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=259, Unknown=5, NotChecked=0, Total=306 [2021-11-22 16:20:52,331 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand has 18 states, 17 states have (on average 2.411764705882353) internal successors, (41), 18 states have internal predecessors, (41), 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 16:20:54,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:20:54,971 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2021-11-22 16:20:54,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 16:20:54,972 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.411764705882353) internal successors, (41), 18 states have internal predecessors, (41), 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 21 [2021-11-22 16:20:54,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:20:54,972 INFO L225 Difference]: With dead ends: 21 [2021-11-22 16:20:54,972 INFO L226 Difference]: Without dead ends: 0 [2021-11-22 16:20:54,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=92, Invalid=409, Unknown=5, NotChecked=0, Total=506 [2021-11-22 16:20:54,974 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 41 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:20:54,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 86 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 27 Unchecked, 0.2s Time] [2021-11-22 16:20:54,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-22 16:20:54,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-22 16:20:54,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:20:54,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-22 16:20:54,976 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-11-22 16:20:54,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:20:54,976 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 16:20:54,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.411764705882353) internal successors, (41), 18 states have internal predecessors, (41), 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 16:20:54,977 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-22 16:20:54,977 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-22 16:20:54,979 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (10 of 11 remaining) [2021-11-22 16:20:54,980 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (9 of 11 remaining) [2021-11-22 16:20:54,980 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (8 of 11 remaining) [2021-11-22 16:20:54,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (7 of 11 remaining) [2021-11-22 16:20:54,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (6 of 11 remaining) [2021-11-22 16:20:54,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION (5 of 11 remaining) [2021-11-22 16:20:54,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION (4 of 11 remaining) [2021-11-22 16:20:54,982 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE (3 of 11 remaining) [2021-11-22 16:20:54,982 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (2 of 11 remaining) [2021-11-22 16:20:54,982 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (1 of 11 remaining) [2021-11-22 16:20:54,982 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 11 remaining) [2021-11-22 16:20:54,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-22 16:20:55,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:20:55,197 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:20:55,199 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 16:20:55,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 04:20:55 BoogieIcfgContainer [2021-11-22 16:20:55,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 16:20:55,203 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 16:20:55,203 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 16:20:55,203 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 16:20:55,204 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:20:11" (3/4) ... [2021-11-22 16:20:55,207 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-22 16:20:55,225 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-11-22 16:20:55,225 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-22 16:20:55,226 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-22 16:20:55,266 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/bin/uautomizer-w2VwFs6gM0/witness.graphml [2021-11-22 16:20:55,266 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 16:20:55,267 INFO L158 Benchmark]: Toolchain (without parser) took 45088.65ms. Allocated memory was 77.6MB in the beginning and 113.2MB in the end (delta: 35.7MB). Free memory was 59.2MB in the beginning and 62.7MB in the end (delta: -3.5MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2021-11-22 16:20:55,268 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 77.6MB. Free memory is still 58.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:20:55,268 INFO L158 Benchmark]: CACSL2BoogieTranslator took 852.53ms. Allocated memory is still 77.6MB. Free memory was 59.0MB in the beginning and 41.0MB in the end (delta: 18.0MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2021-11-22 16:20:55,269 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.65ms. Allocated memory is still 77.6MB. Free memory was 41.0MB in the beginning and 38.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 16:20:55,269 INFO L158 Benchmark]: Boogie Preprocessor took 30.40ms. Allocated memory is still 77.6MB. Free memory was 38.6MB in the beginning and 37.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 16:20:55,270 INFO L158 Benchmark]: RCFGBuilder took 603.17ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 37.2MB in the beginning and 65.6MB in the end (delta: -28.5MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2021-11-22 16:20:55,270 INFO L158 Benchmark]: TraceAbstraction took 43460.85ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 64.9MB in the beginning and 65.9MB in the end (delta: -981.7kB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2021-11-22 16:20:55,271 INFO L158 Benchmark]: Witness Printer took 63.96ms. Allocated memory is still 113.2MB. Free memory was 65.9MB in the beginning and 62.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-22 16:20:55,273 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 77.6MB. Free memory is still 58.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 852.53ms. Allocated memory is still 77.6MB. Free memory was 59.0MB in the beginning and 41.0MB in the end (delta: 18.0MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.65ms. Allocated memory is still 77.6MB. Free memory was 41.0MB in the beginning and 38.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.40ms. Allocated memory is still 77.6MB. Free memory was 38.6MB in the beginning and 37.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 603.17ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 37.2MB in the beginning and 65.6MB in the end (delta: -28.5MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * TraceAbstraction took 43460.85ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 64.9MB in the beginning and 65.9MB in the end (delta: -981.7kB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * Witness Printer took 63.96ms. Allocated memory is still 113.2MB. Free memory was 65.9MB in the beginning and 62.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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 - PositiveResult [Line: 774]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 774]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 781]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 790]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 43.4s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 917 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 917 mSDsluCounter, 1344 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 81 IncrementalHoareTripleChecker+Unchecked, 857 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 514 IncrementalHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 487 mSDtfsCounter, 514 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 426 GetRequests, 284 SyntacticMatches, 14 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 32.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=8, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 133 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 33.8s InterpolantComputationTime, 211 NumberOfCodeBlocks, 211 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 388 ConstructedInterpolants, 29 QuantifiedInterpolants, 3867 SizeOfPredicates, 95 NumberOfNonLiveVariables, 883 ConjunctsInSsa, 132 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 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 - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-22 16:20:55,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7266c6f-c1b9-453e-8265-d051b6cdae47/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 Result: TRUE