./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-memsafety/fillarray1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/fillarray1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:52:14,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:52:14,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:52:14,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:52:14,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:52:14,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:52:14,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:52:14,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:52:14,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:52:14,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:52:14,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:52:14,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:52:14,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:52:14,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:52:14,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:52:14,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:52:14,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:52:14,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:52:14,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:52:14,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:52:14,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:52:14,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:52:14,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:52:14,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:52:14,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:52:14,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:52:14,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:52:14,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:52:14,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:52:14,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:52:14,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:52:14,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:52:14,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:52:14,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:52:14,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:52:14,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:52:14,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:52:14,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:52:14,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:52:14,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:52:14,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:52:14,359 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-12 23:52:14,413 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:52:14,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:52:14,415 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:52:14,421 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:52:14,422 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:52:14,422 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:52:14,422 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:52:14,422 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:52:14,423 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:52:14,423 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:52:14,424 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:52:14,424 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:52:14,424 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:52:14,425 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:52:14,425 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:52:14,425 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:52:14,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:52:14,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:52:14,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:52:14,427 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:52:14,427 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:52:14,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:52:14,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:52:14,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:52:14,428 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:52:14,428 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:52:14,428 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 23:52:14,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:52:14,428 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:52:14,429 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:52:14,429 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:52:14,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:52:14,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:52:14,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:52:14,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:52:14,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:52:14,430 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:52:14,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:52:14,431 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:52:14,431 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:52:14,431 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 [2021-11-12 23:52:14,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:52:14,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:52:14,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:52:14,769 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:52:14,770 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:52:14,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/pthread-memsafety/fillarray1.i [2021-11-12 23:52:14,863 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/data/a053fc887/1a0682d61ecd4073bc508bab45261198/FLAGbf2588582 [2021-11-12 23:52:15,408 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:52:15,408 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/sv-benchmarks/c/pthread-memsafety/fillarray1.i [2021-11-12 23:52:15,436 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/data/a053fc887/1a0682d61ecd4073bc508bab45261198/FLAGbf2588582 [2021-11-12 23:52:15,693 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/data/a053fc887/1a0682d61ecd4073bc508bab45261198 [2021-11-12 23:52:15,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:52:15,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:52:15,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:52:15,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:52:15,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:52:15,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:52:15" (1/1) ... [2021-11-12 23:52:15,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b626812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:15, skipping insertion in model container [2021-11-12 23:52:15,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:52:15" (1/1) ... [2021-11-12 23:52:15,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:52:15,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:52:16,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:52:16,377 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) [2021-11-12 23:52:16,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@b7f4973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:16, skipping insertion in model container [2021-11-12 23:52:16,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:52:16,380 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:52:16,384 INFO L158 Benchmark]: Toolchain (without parser) took 685.38ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 72.2MB in the beginning and 100.1MB in the end (delta: -27.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:52:16,386 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 107.0MB. Free memory is still 61.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:52:16,388 INFO L158 Benchmark]: CACSL2BoogieTranslator took 681.06ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 72.2MB in the beginning and 100.2MB in the end (delta: -28.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:52:16,390 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 107.0MB. Free memory is still 61.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 681.06ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 72.2MB in the beginning and 100.2MB in the end (delta: -28.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1044]: 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_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/fillarray1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:52:18,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:52:18,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:52:18,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:52:18,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:52:18,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:52:18,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:52:18,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:52:18,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:52:18,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:52:18,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:52:18,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:52:18,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:52:18,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:52:18,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:52:18,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:52:18,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:52:18,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:52:18,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:52:18,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:52:18,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:52:18,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:52:18,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:52:18,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:52:18,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:52:18,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:52:18,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:52:18,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:52:18,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:52:18,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:52:18,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:52:18,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:52:18,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:52:18,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:52:18,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:52:18,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:52:18,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:52:18,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:52:18,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:52:18,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:52:18,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:52:18,790 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-12 23:52:18,831 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:52:18,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:52:18,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:52:18,833 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:52:18,833 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:52:18,833 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:52:18,833 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:52:18,834 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:52:18,834 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:52:18,834 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:52:18,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:52:18,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:52:18,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:52:18,837 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:52:18,837 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:52:18,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:52:18,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:52:18,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:52:18,838 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:52:18,838 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:52:18,839 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 23:52:18,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:52:18,839 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:52:18,839 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:52:18,840 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:52:18,840 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:52:18,840 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:52:18,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:52:18,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:52:18,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:52:18,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:52:18,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:52:18,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:52:18,842 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:52:18,843 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:52:18,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:52:18,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:52:18,843 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_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 [2021-11-12 23:52:19,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:52:19,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:52:19,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:52:19,258 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:52:19,259 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:52:19,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/pthread-memsafety/fillarray1.i [2021-11-12 23:52:19,336 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/data/055bbc250/a221aca9ce4c4308a36573ae24d8a04e/FLAG54d4a9de3 [2021-11-12 23:52:19,993 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:52:19,993 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/sv-benchmarks/c/pthread-memsafety/fillarray1.i [2021-11-12 23:52:20,015 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/data/055bbc250/a221aca9ce4c4308a36573ae24d8a04e/FLAG54d4a9de3 [2021-11-12 23:52:20,238 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/data/055bbc250/a221aca9ce4c4308a36573ae24d8a04e [2021-11-12 23:52:20,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:52:20,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:52:20,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:52:20,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:52:20,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:52:20,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:52:20" (1/1) ... [2021-11-12 23:52:20,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37a04f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:20, skipping insertion in model container [2021-11-12 23:52:20,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:52:20" (1/1) ... [2021-11-12 23:52:20,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:52:20,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:52:20,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:52:20,915 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:52:20,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:52:20,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:52:21,004 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:52:21,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:52:21,159 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:52:21,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:21 WrapperNode [2021-11-12 23:52:21,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:52:21,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:52:21,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:52:21,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:52:21,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:21" (1/1) ... [2021-11-12 23:52:21,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:21" (1/1) ... [2021-11-12 23:52:21,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:52:21,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:52:21,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:52:21,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:52:21,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:21" (1/1) ... [2021-11-12 23:52:21,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:21" (1/1) ... [2021-11-12 23:52:21,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:21" (1/1) ... [2021-11-12 23:52:21,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:21" (1/1) ... [2021-11-12 23:52:21,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:21" (1/1) ... [2021-11-12 23:52:21,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:21" (1/1) ... [2021-11-12 23:52:21,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:21" (1/1) ... [2021-11-12 23:52:21,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:52:21,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:52:21,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:52:21,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:52:21,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:21" (1/1) ... [2021-11-12 23:52:21,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:52:21,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:52:21,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:52:21,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:52:21,333 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-11-12 23:52:21,333 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-11-12 23:52:21,334 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-11-12 23:52:21,334 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-11-12 23:52:21,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:52:21,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:52:21,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:52:21,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:52:21,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:52:21,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:52:21,336 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-12 23:52:21,884 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:52:21,884 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-12 23:52:21,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:52:21 BoogieIcfgContainer [2021-11-12 23:52:21,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:52:21,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:52:21,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:52:21,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:52:21,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:52:20" (1/3) ... [2021-11-12 23:52:21,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e04d2b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:52:21, skipping insertion in model container [2021-11-12 23:52:21,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:21" (2/3) ... [2021-11-12 23:52:21,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e04d2b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:52:21, skipping insertion in model container [2021-11-12 23:52:21,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:52:21" (3/3) ... [2021-11-12 23:52:21,896 INFO L111 eAbstractionObserver]: Analyzing ICFG fillarray1.i [2021-11-12 23:52:21,902 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:52:21,902 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-12 23:52:21,903 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-12 23:52:21,958 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,959 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,959 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,959 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,959 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,959 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,960 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,960 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,960 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,961 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,962 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,962 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,962 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,962 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,963 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,963 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,964 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,964 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,965 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,965 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,966 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,966 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,966 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,967 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,968 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,968 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,970 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,971 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,971 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,972 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,972 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,973 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,973 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,973 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,975 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,975 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,975 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,975 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,976 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,976 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,976 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,976 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,997 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,997 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,997 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,998 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,999 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,999 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:21,999 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,000 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,001 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,001 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,002 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,002 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,002 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,002 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,002 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,003 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,003 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,003 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,003 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,004 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,004 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,005 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,005 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,005 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,005 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,005 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,019 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,019 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,020 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,020 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,020 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,021 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,021 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,025 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,025 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,026 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,026 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,026 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,026 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,027 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-12 23:52:22,030 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-12 23:52:22,090 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:52:22,100 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 [2021-11-12 23:52:22,101 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-11-12 23:52:22,126 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-12 23:52:22,145 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 105 transitions, 220 flow [2021-11-12 23:52:22,148 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 105 transitions, 220 flow [2021-11-12 23:52:22,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 103 places, 105 transitions, 220 flow [2021-11-12 23:52:22,231 INFO L129 PetriNetUnfolder]: 8/109 cut-off events. [2021-11-12 23:52:22,232 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-12 23:52:22,237 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 109 events. 8/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 152 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2021-11-12 23:52:22,243 INFO L116 LiptonReduction]: Number of co-enabled transitions 2546 [2021-11-12 23:52:31,636 INFO L131 LiptonReduction]: Checked pairs total: 7972 [2021-11-12 23:52:31,636 INFO L133 LiptonReduction]: Total number of compositions: 86 [2021-11-12 23:52:31,646 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 45 transitions, 100 flow [2021-11-12 23:52:31,725 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1135 states, 1082 states have (on average 3.353049907578558) internal successors, (3628), 1134 states have internal predecessors, (3628), 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) [2021-11-12 23:52:31,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 1135 states, 1082 states have (on average 3.353049907578558) internal successors, (3628), 1134 states have internal predecessors, (3628), 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) [2021-11-12 23:52:31,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-11-12 23:52:31,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:31,741 INFO L514 BasicCegarLoop]: trace histogram [1] [2021-11-12 23:52:31,741 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-11-12 23:52:31,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:31,748 INFO L85 PathProgramCache]: Analyzing trace with hash 401, now seen corresponding path program 1 times [2021-11-12 23:52:31,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:31,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66124822] [2021-11-12 23:52:31,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:31,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:31,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:31,768 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:31,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:52:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:31,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:52:31,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:31,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:31,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:31,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:31,850 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:31,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66124822] [2021-11-12 23:52:31,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66124822] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:31,851 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:31,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-11-12 23:52:31,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816781429] [2021-11-12 23:52:31,854 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:31,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:52:31,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:31,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:52:31,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:52:31,888 INFO L87 Difference]: Start difference. First operand has 1135 states, 1082 states have (on average 3.353049907578558) internal successors, (3628), 1134 states have internal predecessors, (3628), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2021-11-12 23:52:32,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:32,185 INFO L93 Difference]: Finished difference Result 1133 states and 3428 transitions. [2021-11-12 23:52:32,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:52:32,199 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2021-11-12 23:52:32,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:32,247 INFO L225 Difference]: With dead ends: 1133 [2021-11-12 23:52:32,247 INFO L226 Difference]: Without dead ends: 1133 [2021-11-12 23:52:32,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:52:32,253 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 95.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 149.09ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:32,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 28 Unknown, 0 Unchecked, 0.72ms Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 149.09ms Time] [2021-11-12 23:52:32,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2021-11-12 23:52:32,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1133. [2021-11-12 23:52:32,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 1082 states have (on average 3.168207024029575) internal successors, (3428), 1132 states have internal predecessors, (3428), 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) [2021-11-12 23:52:32,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 3428 transitions. [2021-11-12 23:52:32,417 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 3428 transitions. Word has length 1 [2021-11-12 23:52:32,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:32,418 INFO L470 AbstractCegarLoop]: Abstraction has 1133 states and 3428 transitions. [2021-11-12 23:52:32,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2021-11-12 23:52:32,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 3428 transitions. [2021-11-12 23:52:32,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-12 23:52:32,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:32,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-11-12 23:52:32,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:32,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:32,632 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-11-12 23:52:32,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:32,634 INFO L85 PathProgramCache]: Analyzing trace with hash 12585, now seen corresponding path program 1 times [2021-11-12 23:52:32,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:32,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164137494] [2021-11-12 23:52:32,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:32,635 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:32,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:32,638 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:32,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:52:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:32,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:52:32,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:32,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:32,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:32,748 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:32,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164137494] [2021-11-12 23:52:32,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164137494] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:32,749 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:32,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-11-12 23:52:32,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489224042] [2021-11-12 23:52:32,750 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:32,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:52:32,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:32,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:52:32,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:52:32,753 INFO L87 Difference]: Start difference. First operand 1133 states and 3428 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-11-12 23:52:32,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:32,989 INFO L93 Difference]: Finished difference Result 1132 states and 3427 transitions. [2021-11-12 23:52:32,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:32,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-11-12 23:52:32,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:33,003 INFO L225 Difference]: With dead ends: 1132 [2021-11-12 23:52:33,004 INFO L226 Difference]: Without dead ends: 1131 [2021-11-12 23:52:33,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:52:33,007 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 24 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 170.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.83ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 210.48ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:33,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 31 Invalid, 70 Unknown, 0 Unchecked, 1.83ms Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 210.48ms Time] [2021-11-12 23:52:33,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2021-11-12 23:52:33,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1131. [2021-11-12 23:52:33,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1081 states have (on average 3.169287696577243) internal successors, (3426), 1130 states have internal predecessors, (3426), 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) [2021-11-12 23:52:33,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 3426 transitions. [2021-11-12 23:52:33,065 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 3426 transitions. Word has length 2 [2021-11-12 23:52:33,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:33,066 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 3426 transitions. [2021-11-12 23:52:33,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-11-12 23:52:33,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 3426 transitions. [2021-11-12 23:52:33,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 23:52:33,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:33,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 23:52:33,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:33,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:33,279 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-11-12 23:52:33,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash 395542, now seen corresponding path program 1 times [2021-11-12 23:52:33,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:33,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507844308] [2021-11-12 23:52:33,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:33,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:33,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:33,285 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:33,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:52:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:33,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:52:33,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:33,484 INFO L354 Elim1Store]: treesize reduction 37, result has 32.7 percent of original size [2021-11-12 23:52:33,485 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 2 case distinctions, treesize of input 12 treesize of output 23 [2021-11-12 23:52:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:33,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:33,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:33,641 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:33,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507844308] [2021-11-12 23:52:33,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507844308] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:33,641 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:33,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-12 23:52:33,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135475757] [2021-11-12 23:52:33,642 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:33,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:52:33,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:33,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:52:33,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:52:33,643 INFO L87 Difference]: Start difference. First operand 1131 states and 3426 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-12 23:52:33,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:33,902 INFO L93 Difference]: Finished difference Result 1120 states and 3403 transitions. [2021-11-12 23:52:33,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:33,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 3 [2021-11-12 23:52:33,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:33,915 INFO L225 Difference]: With dead ends: 1120 [2021-11-12 23:52:33,915 INFO L226 Difference]: Without dead ends: 1120 [2021-11-12 23:52:33,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:52:33,917 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 64 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 186.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 237.17ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:33,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 22 Invalid, 42 Unknown, 0 Unchecked, 1.43ms Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 237.17ms Time] [2021-11-12 23:52:33,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2021-11-12 23:52:33,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1120. [2021-11-12 23:52:33,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1073 states have (on average 3.1714818266542406) internal successors, (3403), 1119 states have internal predecessors, (3403), 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) [2021-11-12 23:52:33,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 3403 transitions. [2021-11-12 23:52:33,968 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 3403 transitions. Word has length 3 [2021-11-12 23:52:33,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:33,969 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 3403 transitions. [2021-11-12 23:52:33,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-12 23:52:33,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 3403 transitions. [2021-11-12 23:52:33,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 23:52:33,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:33,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 23:52:33,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:34,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:34,182 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-11-12 23:52:34,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:34,183 INFO L85 PathProgramCache]: Analyzing trace with hash 395543, now seen corresponding path program 1 times [2021-11-12 23:52:34,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:34,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870884703] [2021-11-12 23:52:34,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:34,184 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:34,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:34,189 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:34,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:52:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:34,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:52:34,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:34,296 INFO L354 Elim1Store]: treesize reduction 39, result has 29.1 percent of original size [2021-11-12 23:52:34,296 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 2 case distinctions, treesize of input 12 treesize of output 21 [2021-11-12 23:52:34,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:34,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:34,337 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:34,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870884703] [2021-11-12 23:52:34,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870884703] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:34,337 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:34,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-11-12 23:52:34,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434933405] [2021-11-12 23:52:34,338 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:34,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:52:34,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:34,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:52:34,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:52:34,339 INFO L87 Difference]: Start difference. First operand 1120 states and 3403 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-12 23:52:34,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:34,500 INFO L93 Difference]: Finished difference Result 1109 states and 3380 transitions. [2021-11-12 23:52:34,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:34,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-11-12 23:52:34,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:34,512 INFO L225 Difference]: With dead ends: 1109 [2021-11-12 23:52:34,513 INFO L226 Difference]: Without dead ends: 1109 [2021-11-12 23:52:34,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:52:34,514 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.06ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 141.09ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:34,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 21 Invalid, 44 Unknown, 0 Unchecked, 1.06ms Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 141.09ms Time] [2021-11-12 23:52:34,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2021-11-12 23:52:34,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1109. [2021-11-12 23:52:34,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 1065 states have (on average 3.1737089201877935) internal successors, (3380), 1108 states have internal predecessors, (3380), 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) [2021-11-12 23:52:34,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 3380 transitions. [2021-11-12 23:52:34,572 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 3380 transitions. Word has length 3 [2021-11-12 23:52:34,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:34,573 INFO L470 AbstractCegarLoop]: Abstraction has 1109 states and 3380 transitions. [2021-11-12 23:52:34,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-11-12 23:52:34,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 3380 transitions. [2021-11-12 23:52:34,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 23:52:34,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:34,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 23:52:34,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:34,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:34,784 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-11-12 23:52:34,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:34,785 INFO L85 PathProgramCache]: Analyzing trace with hash 380126940, now seen corresponding path program 1 times [2021-11-12 23:52:34,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:34,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709078672] [2021-11-12 23:52:34,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:34,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:34,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:34,786 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:34,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:52:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:34,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:52:34,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:34,906 INFO L354 Elim1Store]: treesize reduction 39, result has 29.1 percent of original size [2021-11-12 23:52:34,907 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 3 case distinctions, treesize of input 24 treesize of output 30 [2021-11-12 23:52:35,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:35,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:35,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:35,046 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:35,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709078672] [2021-11-12 23:52:35,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709078672] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:35,047 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:35,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-12 23:52:35,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638228015] [2021-11-12 23:52:35,047 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:35,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:52:35,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:35,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:52:35,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:52:35,049 INFO L87 Difference]: Start difference. First operand 1109 states and 3380 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) 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) [2021-11-12 23:52:35,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:35,149 INFO L93 Difference]: Finished difference Result 1108 states and 3377 transitions. [2021-11-12 23:52:35,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:35,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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 5 [2021-11-12 23:52:35,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:35,161 INFO L225 Difference]: With dead ends: 1108 [2021-11-12 23:52:35,161 INFO L226 Difference]: Without dead ends: 1108 [2021-11-12 23:52:35,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:52:35,162 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 85.61ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:35,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 59 Unknown, 0 Unchecked, 0.75ms Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 25 Unchecked, 85.61ms Time] [2021-11-12 23:52:35,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2021-11-12 23:52:35,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1108. [2021-11-12 23:52:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1064 states have (on average 3.1738721804511276) internal successors, (3377), 1107 states have internal predecessors, (3377), 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) [2021-11-12 23:52:35,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 3377 transitions. [2021-11-12 23:52:35,210 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 3377 transitions. Word has length 5 [2021-11-12 23:52:35,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:35,211 INFO L470 AbstractCegarLoop]: Abstraction has 1108 states and 3377 transitions. [2021-11-12 23:52:35,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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) [2021-11-12 23:52:35,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 3377 transitions. [2021-11-12 23:52:35,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 23:52:35,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:35,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 23:52:35,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:35,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:35,430 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-11-12 23:52:35,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:35,430 INFO L85 PathProgramCache]: Analyzing trace with hash 380126927, now seen corresponding path program 1 times [2021-11-12 23:52:35,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:35,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706274379] [2021-11-12 23:52:35,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:35,431 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:35,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:35,432 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:35,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:52:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:35,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:52:35,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:35,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:35,530 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:35,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706274379] [2021-11-12 23:52:35,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706274379] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:35,530 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:35,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-11-12 23:52:35,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745508018] [2021-11-12 23:52:35,531 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:35,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:52:35,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:35,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:52:35,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:52:35,532 INFO L87 Difference]: Start difference. First operand 1108 states and 3377 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-12 23:52:35,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:35,625 INFO L93 Difference]: Finished difference Result 987 states and 2992 transitions. [2021-11-12 23:52:35,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:35,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-11-12 23:52:35,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:35,636 INFO L225 Difference]: With dead ends: 987 [2021-11-12 23:52:35,636 INFO L226 Difference]: Without dead ends: 987 [2021-11-12 23:52:35,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:52:35,638 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.85ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:35,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 11 Invalid, 24 Unknown, 0 Unchecked, 0.44ms Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 79.85ms Time] [2021-11-12 23:52:35,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2021-11-12 23:52:35,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 987. [2021-11-12 23:52:35,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 952 states have (on average 3.142857142857143) internal successors, (2992), 986 states have internal predecessors, (2992), 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) [2021-11-12 23:52:35,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 2992 transitions. [2021-11-12 23:52:35,680 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 2992 transitions. Word has length 5 [2021-11-12 23:52:35,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:35,680 INFO L470 AbstractCegarLoop]: Abstraction has 987 states and 2992 transitions. [2021-11-12 23:52:35,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-12 23:52:35,681 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 2992 transitions. [2021-11-12 23:52:35,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 23:52:35,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:35,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 23:52:35,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-12 23:52:35,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:35,897 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-11-12 23:52:35,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:35,897 INFO L85 PathProgramCache]: Analyzing trace with hash 380126939, now seen corresponding path program 1 times [2021-11-12 23:52:35,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:35,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111134241] [2021-11-12 23:52:35,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:35,898 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:35,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:35,899 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:35,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:52:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:35,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:52:35,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:35,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:36,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:36,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:36,018 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:36,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111134241] [2021-11-12 23:52:36,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111134241] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:36,019 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:36,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-11-12 23:52:36,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777987797] [2021-11-12 23:52:36,019 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:36,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:52:36,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:36,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:52:36,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:52:36,020 INFO L87 Difference]: Start difference. First operand 987 states and 2992 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-12 23:52:36,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:36,127 INFO L93 Difference]: Finished difference Result 866 states and 2607 transitions. [2021-11-12 23:52:36,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:36,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-11-12 23:52:36,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:36,136 INFO L225 Difference]: With dead ends: 866 [2021-11-12 23:52:36,136 INFO L226 Difference]: Without dead ends: 866 [2021-11-12 23:52:36,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:52:36,138 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.47ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.24ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:36,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 11 Invalid, 23 Unknown, 0 Unchecked, 0.47ms Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 92.24ms Time] [2021-11-12 23:52:36,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-11-12 23:52:36,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2021-11-12 23:52:36,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 840 states have (on average 3.1035714285714286) internal successors, (2607), 865 states have internal predecessors, (2607), 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) [2021-11-12 23:52:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 2607 transitions. [2021-11-12 23:52:36,187 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 2607 transitions. Word has length 5 [2021-11-12 23:52:36,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:36,191 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 2607 transitions. [2021-11-12 23:52:36,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-12 23:52:36,191 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 2607 transitions. [2021-11-12 23:52:36,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 23:52:36,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:36,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 23:52:36,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:36,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:36,406 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-11-12 23:52:36,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:36,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1100968318, now seen corresponding path program 1 times [2021-11-12 23:52:36,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:36,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185798850] [2021-11-12 23:52:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:36,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:36,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:36,408 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:36,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:52:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:36,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:52:36,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:36,528 INFO L354 Elim1Store]: treesize reduction 39, result has 29.1 percent of original size [2021-11-12 23:52:36,528 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 3 case distinctions, treesize of input 24 treesize of output 30 [2021-11-12 23:52:36,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:36,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:36,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:36,693 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:36,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185798850] [2021-11-12 23:52:36,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185798850] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:36,694 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:36,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-12 23:52:36,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140219811] [2021-11-12 23:52:36,694 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:36,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:52:36,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:36,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:52:36,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:52:36,696 INFO L87 Difference]: Start difference. First operand 866 states and 2607 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-12 23:52:36,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:36,792 INFO L93 Difference]: Finished difference Result 865 states and 2604 transitions. [2021-11-12 23:52:36,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:36,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 6 [2021-11-12 23:52:36,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:36,801 INFO L225 Difference]: With dead ends: 865 [2021-11-12 23:52:36,801 INFO L226 Difference]: Without dead ends: 865 [2021-11-12 23:52:36,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:52:36,802 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.57ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 85.25ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:36,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 39 Unknown, 0 Unchecked, 0.57ms Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 7 Unchecked, 85.25ms Time] [2021-11-12 23:52:36,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-11-12 23:52:36,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 865. [2021-11-12 23:52:36,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 839 states have (on average 3.103694874851013) internal successors, (2604), 864 states have internal predecessors, (2604), 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) [2021-11-12 23:52:36,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 2604 transitions. [2021-11-12 23:52:36,839 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 2604 transitions. Word has length 6 [2021-11-12 23:52:36,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:36,839 INFO L470 AbstractCegarLoop]: Abstraction has 865 states and 2604 transitions. [2021-11-12 23:52:36,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-12 23:52:36,840 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 2604 transitions. [2021-11-12 23:52:36,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 23:52:36,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:36,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 23:52:36,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:37,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:37,051 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-11-12 23:52:37,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:37,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1100967512, now seen corresponding path program 1 times [2021-11-12 23:52:37,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:37,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274787679] [2021-11-12 23:52:37,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:37,052 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:37,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:37,053 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:37,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:52:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:37,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:52:37,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:37,186 INFO L354 Elim1Store]: treesize reduction 39, result has 29.1 percent of original size [2021-11-12 23:52:37,187 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 3 case distinctions, treesize of input 24 treesize of output 30 [2021-11-12 23:52:37,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:37,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:37,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:37,349 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:37,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274787679] [2021-11-12 23:52:37,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274787679] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:37,350 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:37,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-12 23:52:37,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20855803] [2021-11-12 23:52:37,350 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:37,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:52:37,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:37,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:52:37,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:52:37,352 INFO L87 Difference]: Start difference. First operand 865 states and 2604 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-12 23:52:37,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:37,443 INFO L93 Difference]: Finished difference Result 864 states and 2601 transitions. [2021-11-12 23:52:37,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:37,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 6 [2021-11-12 23:52:37,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:37,453 INFO L225 Difference]: With dead ends: 864 [2021-11-12 23:52:37,453 INFO L226 Difference]: Without dead ends: 864 [2021-11-12 23:52:37,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:52:37,455 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.59ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 81.27ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:37,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 39 Unknown, 0 Unchecked, 0.59ms Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 7 Unchecked, 81.27ms Time] [2021-11-12 23:52:37,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-11-12 23:52:37,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2021-11-12 23:52:37,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 838 states have (on average 3.10381861575179) internal successors, (2601), 863 states have internal predecessors, (2601), 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) [2021-11-12 23:52:37,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 2601 transitions. [2021-11-12 23:52:37,491 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 2601 transitions. Word has length 6 [2021-11-12 23:52:37,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:37,492 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 2601 transitions. [2021-11-12 23:52:37,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-11-12 23:52:37,492 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 2601 transitions. [2021-11-12 23:52:37,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-12 23:52:37,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:37,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:37,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:37,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:37,704 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-11-12 23:52:37,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:37,705 INFO L85 PathProgramCache]: Analyzing trace with hash 229719746, now seen corresponding path program 1 times [2021-11-12 23:52:37,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:37,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648351596] [2021-11-12 23:52:37,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:37,705 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:37,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:37,706 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:37,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:52:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:37,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:52:37,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:37,822 INFO L354 Elim1Store]: treesize reduction 39, result has 29.1 percent of original size [2021-11-12 23:52:37,823 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 3 case distinctions, treesize of input 24 treesize of output 30 [2021-11-12 23:52:37,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:37,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:38,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:38,008 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:38,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648351596] [2021-11-12 23:52:38,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648351596] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:38,009 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:38,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-12 23:52:38,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838821720] [2021-11-12 23:52:38,009 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:38,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:52:38,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:38,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:52:38,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:52:38,011 INFO L87 Difference]: Start difference. First operand 864 states and 2601 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2021-11-12 23:52:38,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:38,105 INFO L93 Difference]: Finished difference Result 863 states and 2598 transitions. [2021-11-12 23:52:38,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:38,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 7 [2021-11-12 23:52:38,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:38,114 INFO L225 Difference]: With dead ends: 863 [2021-11-12 23:52:38,114 INFO L226 Difference]: Without dead ends: 863 [2021-11-12 23:52:38,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:52:38,115 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.63ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 84.91ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:38,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 38 Unknown, 0 Unchecked, 0.63ms Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 8 Unchecked, 84.91ms Time] [2021-11-12 23:52:38,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2021-11-12 23:52:38,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2021-11-12 23:52:38,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 837 states have (on average 3.1039426523297493) internal successors, (2598), 862 states have internal predecessors, (2598), 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) [2021-11-12 23:52:38,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 2598 transitions. [2021-11-12 23:52:38,151 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 2598 transitions. Word has length 7 [2021-11-12 23:52:38,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:38,152 INFO L470 AbstractCegarLoop]: Abstraction has 863 states and 2598 transitions. [2021-11-12 23:52:38,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2021-11-12 23:52:38,152 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 2598 transitions. [2021-11-12 23:52:38,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-12 23:52:38,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:38,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:38,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:38,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:38,365 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-11-12 23:52:38,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:38,366 INFO L85 PathProgramCache]: Analyzing trace with hash 229719839, now seen corresponding path program 1 times [2021-11-12 23:52:38,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:38,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744426192] [2021-11-12 23:52:38,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:38,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:38,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:38,368 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:38,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:52:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:38,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:52:38,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:38,490 INFO L354 Elim1Store]: treesize reduction 39, result has 29.1 percent of original size [2021-11-12 23:52:38,490 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 3 case distinctions, treesize of input 24 treesize of output 30 [2021-11-12 23:52:38,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:38,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:38,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:38,668 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:38,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744426192] [2021-11-12 23:52:38,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744426192] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:38,669 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:38,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-12 23:52:38,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203457359] [2021-11-12 23:52:38,669 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:38,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:52:38,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:38,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:52:38,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:52:38,670 INFO L87 Difference]: Start difference. First operand 863 states and 2598 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2021-11-12 23:52:38,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:38,755 INFO L93 Difference]: Finished difference Result 862 states and 2594 transitions. [2021-11-12 23:52:38,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:38,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 7 [2021-11-12 23:52:38,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:38,764 INFO L225 Difference]: With dead ends: 862 [2021-11-12 23:52:38,764 INFO L226 Difference]: Without dead ends: 862 [2021-11-12 23:52:38,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:52:38,765 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.40ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 76.77ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:38,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 38 Unknown, 0 Unchecked, 0.40ms Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 8 Unchecked, 76.77ms Time] [2021-11-12 23:52:38,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2021-11-12 23:52:38,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 862. [2021-11-12 23:52:38,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 836 states have (on average 3.102870813397129) internal successors, (2594), 861 states have internal predecessors, (2594), 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) [2021-11-12 23:52:38,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 2594 transitions. [2021-11-12 23:52:38,798 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 2594 transitions. Word has length 7 [2021-11-12 23:52:38,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:38,799 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 2594 transitions. [2021-11-12 23:52:38,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2021-11-12 23:52:38,799 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 2594 transitions. [2021-11-12 23:52:38,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-12 23:52:38,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:38,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:38,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:39,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:39,012 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-11-12 23:52:39,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:39,013 INFO L85 PathProgramCache]: Analyzing trace with hash 229744453, now seen corresponding path program 1 times [2021-11-12 23:52:39,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:39,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952822889] [2021-11-12 23:52:39,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:39,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:39,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:39,014 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:39,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:52:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:39,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:52:39,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:39,120 INFO L354 Elim1Store]: treesize reduction 39, result has 29.1 percent of original size [2021-11-12 23:52:39,121 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 3 case distinctions, treesize of input 24 treesize of output 30 [2021-11-12 23:52:39,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:39,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:39,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:39,302 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:39,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952822889] [2021-11-12 23:52:39,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952822889] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:39,302 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:39,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-12 23:52:39,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428026522] [2021-11-12 23:52:39,303 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:39,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:52:39,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:39,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:52:39,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:52:39,304 INFO L87 Difference]: Start difference. First operand 862 states and 2594 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2021-11-12 23:52:39,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:39,374 INFO L93 Difference]: Finished difference Result 861 states and 2590 transitions. [2021-11-12 23:52:39,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:39,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 7 [2021-11-12 23:52:39,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:39,385 INFO L225 Difference]: With dead ends: 861 [2021-11-12 23:52:39,385 INFO L226 Difference]: Without dead ends: 861 [2021-11-12 23:52:39,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:52:39,386 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 64.30ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:39,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 31 Invalid, 38 Unknown, 0 Unchecked, 0.31ms Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 23 Unchecked, 64.30ms Time] [2021-11-12 23:52:39,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2021-11-12 23:52:39,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2021-11-12 23:52:39,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 835 states have (on average 3.1017964071856285) internal successors, (2590), 860 states have internal predecessors, (2590), 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) [2021-11-12 23:52:39,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 2590 transitions. [2021-11-12 23:52:39,424 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 2590 transitions. Word has length 7 [2021-11-12 23:52:39,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:39,425 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 2590 transitions. [2021-11-12 23:52:39,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2021-11-12 23:52:39,425 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 2590 transitions. [2021-11-12 23:52:39,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 23:52:39,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:39,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:39,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:39,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:39,637 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-11-12 23:52:39,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:39,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1468623509, now seen corresponding path program 1 times [2021-11-12 23:52:39,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:39,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378466563] [2021-11-12 23:52:39,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:39,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:39,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:39,639 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:39,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:52:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:39,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:52:39,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:39,757 INFO L354 Elim1Store]: treesize reduction 39, result has 29.1 percent of original size [2021-11-12 23:52:39,758 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 3 case distinctions, treesize of input 24 treesize of output 30 [2021-11-12 23:52:39,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:39,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:39,942 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:39,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378466563] [2021-11-12 23:52:39,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378466563] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:39,943 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:39,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-12 23:52:39,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252410676] [2021-11-12 23:52:39,943 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:39,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:52:39,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:39,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:52:39,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:52:39,944 INFO L87 Difference]: Start difference. First operand 861 states and 2590 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2021-11-12 23:52:40,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:40,017 INFO L93 Difference]: Finished difference Result 860 states and 2586 transitions. [2021-11-12 23:52:40,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:40,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 23:52:40,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:40,025 INFO L225 Difference]: With dead ends: 860 [2021-11-12 23:52:40,026 INFO L226 Difference]: Without dead ends: 860 [2021-11-12 23:52:40,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:52:40,027 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.33ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 65.16ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:40,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 37 Unknown, 0 Unchecked, 0.33ms Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 9 Unchecked, 65.16ms Time] [2021-11-12 23:52:40,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-11-12 23:52:40,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 860. [2021-11-12 23:52:40,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 834 states have (on average 3.1007194244604315) internal successors, (2586), 859 states have internal predecessors, (2586), 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) [2021-11-12 23:52:40,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 2586 transitions. [2021-11-12 23:52:40,068 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 2586 transitions. Word has length 8 [2021-11-12 23:52:40,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:40,069 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 2586 transitions. [2021-11-12 23:52:40,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2021-11-12 23:52:40,070 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 2586 transitions. [2021-11-12 23:52:40,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 23:52:40,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:40,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:40,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:40,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:40,284 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-11-12 23:52:40,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:40,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1468623137, now seen corresponding path program 1 times [2021-11-12 23:52:40,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:40,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835348779] [2021-11-12 23:52:40,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:40,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:40,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:40,287 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:40,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 23:52:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:40,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:52:40,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:40,417 INFO L354 Elim1Store]: treesize reduction 39, result has 29.1 percent of original size [2021-11-12 23:52:40,417 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 3 case distinctions, treesize of input 24 treesize of output 30 [2021-11-12 23:52:40,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:40,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:40,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:40,596 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:40,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835348779] [2021-11-12 23:52:40,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835348779] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:40,596 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:40,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-12 23:52:40,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121975983] [2021-11-12 23:52:40,597 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:40,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:52:40,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:40,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:52:40,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:52:40,598 INFO L87 Difference]: Start difference. First operand 860 states and 2586 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2021-11-12 23:52:40,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:40,684 INFO L93 Difference]: Finished difference Result 859 states and 2582 transitions. [2021-11-12 23:52:40,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:40,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 23:52:40,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:40,693 INFO L225 Difference]: With dead ends: 859 [2021-11-12 23:52:40,693 INFO L226 Difference]: Without dead ends: 859 [2021-11-12 23:52:40,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:52:40,694 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.32ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 78.65ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:40,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 37 Unknown, 0 Unchecked, 0.32ms Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 9 Unchecked, 78.65ms Time] [2021-11-12 23:52:40,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2021-11-12 23:52:40,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 859. [2021-11-12 23:52:40,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 833 states have (on average 3.099639855942377) internal successors, (2582), 858 states have internal predecessors, (2582), 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) [2021-11-12 23:52:40,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 2582 transitions. [2021-11-12 23:52:40,733 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 2582 transitions. Word has length 8 [2021-11-12 23:52:40,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:40,733 INFO L470 AbstractCegarLoop]: Abstraction has 859 states and 2582 transitions. [2021-11-12 23:52:40,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2021-11-12 23:52:40,734 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 2582 transitions. [2021-11-12 23:52:40,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 23:52:40,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:40,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:40,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:40,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:40,946 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-11-12 23:52:40,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:40,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1468620037, now seen corresponding path program 1 times [2021-11-12 23:52:40,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:40,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873371736] [2021-11-12 23:52:40,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:40,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:40,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:40,949 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:40,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:52:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:41,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:52:41,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:41,066 INFO L354 Elim1Store]: treesize reduction 39, result has 29.1 percent of original size [2021-11-12 23:52:41,067 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 3 case distinctions, treesize of input 24 treesize of output 30 [2021-11-12 23:52:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:41,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:41,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:41,232 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:41,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873371736] [2021-11-12 23:52:41,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873371736] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:41,232 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:41,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-11-12 23:52:41,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549629185] [2021-11-12 23:52:41,233 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:41,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:52:41,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:41,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:52:41,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:52:41,234 INFO L87 Difference]: Start difference. First operand 859 states and 2582 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2021-11-12 23:52:41,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:41,295 INFO L93 Difference]: Finished difference Result 864 states and 2600 transitions. [2021-11-12 23:52:41,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:52:41,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 23:52:41,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:41,303 INFO L225 Difference]: With dead ends: 864 [2021-11-12 23:52:41,303 INFO L226 Difference]: Without dead ends: 864 [2021-11-12 23:52:41,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:52:41,304 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 54.07ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:41,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 31 Invalid, 45 Unknown, 0 Unchecked, 0.31ms Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 23 Unchecked, 54.07ms Time] [2021-11-12 23:52:41,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-11-12 23:52:41,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2021-11-12 23:52:41,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 838 states have (on average 3.1026252983293556) internal successors, (2600), 863 states have internal predecessors, (2600), 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) [2021-11-12 23:52:41,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 2600 transitions. [2021-11-12 23:52:41,334 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 2600 transitions. Word has length 8 [2021-11-12 23:52:41,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:41,335 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 2600 transitions. [2021-11-12 23:52:41,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2021-11-12 23:52:41,335 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 2600 transitions. [2021-11-12 23:52:41,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 23:52:41,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:41,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:41,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:41,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:41,557 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-11-12 23:52:41,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:41,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1466590262, now seen corresponding path program 1 times [2021-11-12 23:52:41,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:41,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466728257] [2021-11-12 23:52:41,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:41,558 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:41,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:41,559 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:41,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 23:52:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:41,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:52:41,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:41,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:41,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:44,133 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:44,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466728257] [2021-11-12 23:52:44,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466728257] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:44,133 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:44,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-12 23:52:44,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730061752] [2021-11-12 23:52:44,134 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:44,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:52:44,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:44,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:52:44,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=68, Unknown=1, NotChecked=0, Total=90 [2021-11-12 23:52:44,135 INFO L87 Difference]: Start difference. First operand 864 states and 2600 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) [2021-11-12 23:52:44,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:44,501 INFO L93 Difference]: Finished difference Result 1110 states and 3382 transitions. [2021-11-12 23:52:44,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:52:44,502 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 23:52:44,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:44,510 INFO L225 Difference]: With dead ends: 1110 [2021-11-12 23:52:44,510 INFO L226 Difference]: Without dead ends: 1106 [2021-11-12 23:52:44,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2021-11-12 23:52:44,511 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 87 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 268.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.43ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 195 IncrementalHoareTripleChecker+Unchecked, 301.93ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:44,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 261 Invalid, 280 Unknown, 0 Unchecked, 2.43ms Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 195 Unchecked, 301.93ms Time] [2021-11-12 23:52:44,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2021-11-12 23:52:44,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1101. [2021-11-12 23:52:44,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 1084 states have (on average 3.0968634686346865) internal successors, (3357), 1100 states have internal predecessors, (3357), 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) [2021-11-12 23:52:44,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 3357 transitions. [2021-11-12 23:52:44,574 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 3357 transitions. Word has length 8 [2021-11-12 23:52:44,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:44,574 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 3357 transitions. [2021-11-12 23:52:44,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) [2021-11-12 23:52:44,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 3357 transitions. [2021-11-12 23:52:44,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 23:52:44,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:44,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:44,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:44,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:44,801 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-11-12 23:52:44,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:44,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1780245134, now seen corresponding path program 1 times [2021-11-12 23:52:44,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:44,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778711060] [2021-11-12 23:52:44,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:44,802 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:44,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:44,802 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:44,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 23:52:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:44,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:52:44,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:45,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:45,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:47,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:47,341 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:47,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778711060] [2021-11-12 23:52:47,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778711060] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:47,341 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:47,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-12 23:52:47,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735677778] [2021-11-12 23:52:47,342 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:47,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:52:47,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:47,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:52:47,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=68, Unknown=1, NotChecked=0, Total=90 [2021-11-12 23:52:47,343 INFO L87 Difference]: Start difference. First operand 1101 states and 3357 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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) [2021-11-12 23:52:47,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:47,710 INFO L93 Difference]: Finished difference Result 1369 states and 4207 transitions. [2021-11-12 23:52:47,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:52:47,711 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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 [2021-11-12 23:52:47,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:47,736 INFO L225 Difference]: With dead ends: 1369 [2021-11-12 23:52:47,737 INFO L226 Difference]: Without dead ends: 1369 [2021-11-12 23:52:47,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2021-11-12 23:52:47,738 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 105 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 277.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.19ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 313.96ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:47,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 236 Invalid, 213 Unknown, 0 Unchecked, 2.19ms Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 109 Unchecked, 313.96ms Time] [2021-11-12 23:52:47,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2021-11-12 23:52:47,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1122. [2021-11-12 23:52:47,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1105 states have (on average 3.0968325791855205) internal successors, (3422), 1121 states have internal predecessors, (3422), 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) [2021-11-12 23:52:47,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 3422 transitions. [2021-11-12 23:52:47,784 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 3422 transitions. Word has length 9 [2021-11-12 23:52:47,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:47,785 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 3422 transitions. [2021-11-12 23:52:47,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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) [2021-11-12 23:52:47,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 3422 transitions. [2021-11-12 23:52:47,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 23:52:47,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:47,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:47,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:48,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:48,009 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-11-12 23:52:48,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:48,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1780345574, now seen corresponding path program 2 times [2021-11-12 23:52:48,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:48,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797526701] [2021-11-12 23:52:48,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:52:48,010 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:48,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:48,011 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:48,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 23:52:48,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-12 23:52:48,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:52:48,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:52:48,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:48,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:50,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:50,531 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:50,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797526701] [2021-11-12 23:52:50,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797526701] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:50,531 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:50,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-12 23:52:50,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477333427] [2021-11-12 23:52:50,532 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:50,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:52:50,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:50,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:52:50,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=68, Unknown=1, NotChecked=0, Total=90 [2021-11-12 23:52:50,533 INFO L87 Difference]: Start difference. First operand 1122 states and 3422 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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) [2021-11-12 23:52:50,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:50,909 INFO L93 Difference]: Finished difference Result 1483 states and 4564 transitions. [2021-11-12 23:52:50,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:52:50,910 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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 [2021-11-12 23:52:50,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:50,916 INFO L225 Difference]: With dead ends: 1483 [2021-11-12 23:52:50,916 INFO L226 Difference]: Without dead ends: 1459 [2021-11-12 23:52:50,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2021-11-12 23:52:50,918 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 135 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 291.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.15ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 276 IncrementalHoareTripleChecker+Unchecked, 328.24ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:50,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 261 Invalid, 386 Unknown, 0 Unchecked, 3.15ms Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 276 Unchecked, 328.24ms Time] [2021-11-12 23:52:50,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2021-11-12 23:52:50,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1130. [2021-11-12 23:52:50,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1113 states have (on average 3.0970350404312668) internal successors, (3447), 1129 states have internal predecessors, (3447), 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) [2021-11-12 23:52:50,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 3447 transitions. [2021-11-12 23:52:50,958 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 3447 transitions. Word has length 9 [2021-11-12 23:52:50,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:50,958 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 3447 transitions. [2021-11-12 23:52:50,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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) [2021-11-12 23:52:50,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 3447 transitions. [2021-11-12 23:52:50,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 23:52:50,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:50,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:50,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:51,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:51,171 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-11-12 23:52:51,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:51,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1780302794, now seen corresponding path program 3 times [2021-11-12 23:52:51,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:51,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749589881] [2021-11-12 23:52:51,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:52:51,172 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:51,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:51,173 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:51,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 23:52:51,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-12 23:52:51,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:52:51,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:52:51,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:51,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:53,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:53,700 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:53,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749589881] [2021-11-12 23:52:53,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749589881] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:53,700 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:53,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-12 23:52:53,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435167673] [2021-11-12 23:52:53,700 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:53,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:52:53,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:53,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:52:53,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=68, Unknown=1, NotChecked=0, Total=90 [2021-11-12 23:52:53,701 INFO L87 Difference]: Start difference. First operand 1130 states and 3447 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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) [2021-11-12 23:52:54,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:54,022 INFO L93 Difference]: Finished difference Result 1676 states and 5184 transitions. [2021-11-12 23:52:54,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:52:54,023 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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 [2021-11-12 23:52:54,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:54,029 INFO L225 Difference]: With dead ends: 1676 [2021-11-12 23:52:54,029 INFO L226 Difference]: Without dead ends: 1674 [2021-11-12 23:52:54,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2021-11-12 23:52:54,030 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 111 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 242.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.91ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 270.32ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:54,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 231 Invalid, 186 Unknown, 0 Unchecked, 1.91ms Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 111 Unchecked, 270.32ms Time] [2021-11-12 23:52:54,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2021-11-12 23:52:54,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1327. [2021-11-12 23:52:54,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1310 states have (on average 3.1381679389312978) internal successors, (4111), 1326 states have internal predecessors, (4111), 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) [2021-11-12 23:52:54,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 4111 transitions. [2021-11-12 23:52:54,074 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 4111 transitions. Word has length 9 [2021-11-12 23:52:54,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:54,074 INFO L470 AbstractCegarLoop]: Abstraction has 1327 states and 4111 transitions. [2021-11-12 23:52:54,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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) [2021-11-12 23:52:54,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 4111 transitions. [2021-11-12 23:52:54,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 23:52:54,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:54,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:54,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:54,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:54,287 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-11-12 23:52:54,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:54,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1781019700, now seen corresponding path program 1 times [2021-11-12 23:52:54,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:54,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225025005] [2021-11-12 23:52:54,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:54,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:54,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:54,289 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:54,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-12 23:52:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:52:54,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:52:54,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:52:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:54,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:52:56,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:52:56,795 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:52:56,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225025005] [2021-11-12 23:52:56,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225025005] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:52:56,795 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:52:56,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-12 23:52:56,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103863370] [2021-11-12 23:52:56,795 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:52:56,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:52:56,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:52:56,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:52:56,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=68, Unknown=1, NotChecked=0, Total=90 [2021-11-12 23:52:56,796 INFO L87 Difference]: Start difference. First operand 1327 states and 4111 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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) [2021-11-12 23:52:57,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:52:57,091 INFO L93 Difference]: Finished difference Result 1857 states and 5800 transitions. [2021-11-12 23:52:57,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:52:57,092 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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 [2021-11-12 23:52:57,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:52:57,100 INFO L225 Difference]: With dead ends: 1857 [2021-11-12 23:52:57,101 INFO L226 Difference]: Without dead ends: 1849 [2021-11-12 23:52:57,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2021-11-12 23:52:57,102 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 222 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 220.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.47ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 171 IncrementalHoareTripleChecker+Unchecked, 246.91ms IncrementalHoareTripleChecker+Time [2021-11-12 23:52:57,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 176 Invalid, 266 Unknown, 0 Unchecked, 1.47ms Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 171 Unchecked, 246.91ms Time] [2021-11-12 23:52:57,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2021-11-12 23:52:57,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1354. [2021-11-12 23:52:57,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1337 states have (on average 3.1376215407629022) internal successors, (4195), 1353 states have internal predecessors, (4195), 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) [2021-11-12 23:52:57,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4195 transitions. [2021-11-12 23:52:57,165 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4195 transitions. Word has length 9 [2021-11-12 23:52:57,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:52:57,165 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4195 transitions. [2021-11-12 23:52:57,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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) [2021-11-12 23:52:57,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4195 transitions. [2021-11-12 23:52:57,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 23:52:57,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:52:57,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:57,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:57,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:57,385 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1REQUIRES_VIOLATION === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION (and 15 more)] === [2021-11-12 23:52:57,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:52:57,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1265797648, now seen corresponding path program 1 times [2021-11-12 23:52:57,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:52:57,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669616384] [2021-11-12 23:52:57,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:52:57,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:52:57,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:52:57,387 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:52:57,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 23:52:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:52:57,438 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:52:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:52:57,501 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 23:52:57,501 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:52:57,502 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location t1Err1REQUIRES_VIOLATION (17 of 18 remaining) [2021-11-12 23:52:57,504 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (16 of 18 remaining) [2021-11-12 23:52:57,504 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (15 of 18 remaining) [2021-11-12 23:52:57,505 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (14 of 18 remaining) [2021-11-12 23:52:57,505 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (13 of 18 remaining) [2021-11-12 23:52:57,505 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (12 of 18 remaining) [2021-11-12 23:52:57,505 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (11 of 18 remaining) [2021-11-12 23:52:57,505 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (10 of 18 remaining) [2021-11-12 23:52:57,506 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE (9 of 18 remaining) [2021-11-12 23:52:57,506 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (8 of 18 remaining) [2021-11-12 23:52:57,506 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION (7 of 18 remaining) [2021-11-12 23:52:57,506 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATION (6 of 18 remaining) [2021-11-12 23:52:57,506 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATION (5 of 18 remaining) [2021-11-12 23:52:57,506 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATION (4 of 18 remaining) [2021-11-12 23:52:57,507 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATION (3 of 18 remaining) [2021-11-12 23:52:57,507 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATION (2 of 18 remaining) [2021-11-12 23:52:57,507 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATION (1 of 18 remaining) [2021-11-12 23:52:57,507 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATION (0 of 18 remaining) [2021-11-12 23:52:57,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-12 23:52:57,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:52:57,709 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:52:57,713 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-12 23:52:57,713 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:52:57,733 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:52:57,742 INFO L158 Benchmark]: Toolchain (without parser) took 37501.15ms. Allocated memory was 79.7MB in the beginning and 109.1MB in the end (delta: 29.4MB). Free memory was 56.8MB in the beginning and 60.8MB in the end (delta: -4.0MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2021-11-12 23:52:57,743 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory is still 34.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:52:57,743 INFO L158 Benchmark]: CACSL2BoogieTranslator took 916.77ms. Allocated memory is still 79.7MB. Free memory was 56.6MB in the beginning and 41.3MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-12 23:52:57,744 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.23ms. Allocated memory is still 79.7MB. Free memory was 41.3MB in the beginning and 61.1MB in the end (delta: -19.8MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2021-11-12 23:52:57,746 INFO L158 Benchmark]: Boogie Preprocessor took 33.83ms. Allocated memory is still 79.7MB. Free memory was 61.1MB in the beginning and 59.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:52:57,746 INFO L158 Benchmark]: RCFGBuilder took 625.60ms. Allocated memory is still 79.7MB. Free memory was 59.3MB in the beginning and 45.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-12 23:52:57,751 INFO L158 Benchmark]: TraceAbstraction took 35853.90ms. Allocated memory was 79.7MB in the beginning and 109.1MB in the end (delta: 29.4MB). Free memory was 44.7MB in the beginning and 60.8MB in the end (delta: -16.1MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2021-11-12 23:52:57,752 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory is still 34.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 916.77ms. Allocated memory is still 79.7MB. Free memory was 56.6MB in the beginning and 41.3MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.23ms. Allocated memory is still 79.7MB. Free memory was 41.3MB in the beginning and 61.1MB in the end (delta: -19.8MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.83ms. Allocated memory is still 79.7MB. Free memory was 61.1MB in the beginning and 59.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 625.60ms. Allocated memory is still 79.7MB. Free memory was 59.3MB in the beginning and 45.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 35853.90ms. Allocated memory was 79.7MB in the beginning and 109.1MB in the end (delta: 29.4MB). Free memory was 44.7MB in the beginning and 60.8MB in the end (delta: -16.1MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.5s, 103 PlacesBefore, 45 PlacesAfterwards, 105 TransitionsBefore, 45 TransitionsAfterwards, 2546 CoEnabledTransitionPairs, 7 FixpointIterations, 41 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 86 TotalNumberOfCompositions, 7972 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2983, positive: 2730, positive conditional: 0, positive unconditional: 2730, negative: 253, negative conditional: 0, negative unconditional: 253, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1339, positive: 1302, positive conditional: 0, positive unconditional: 1302, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1339, positive: 1290, positive conditional: 0, positive unconditional: 1290, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 49, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 574, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 538, negative conditional: 0, negative unconditional: 538, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2983, positive: 1428, positive conditional: 0, positive unconditional: 1428, negative: 216, negative conditional: 0, negative unconditional: 216, unknown: 1339, unknown conditional: 0, unknown unconditional: 1339] , Statistics on independence cache: Total cache size (in pairs): 201, Positive cache size: 176, Positive conditional cache size: 0, Positive unconditional cache size: 176, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25 - 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 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 23:52:57,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b7495ee-3e2d-4c3b-bb2e-00abf35e1d9e/bin/utaipan-vmNK8stdcF/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: ERROR: ExceptionOrErrorResult: NullPointerException: null