./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0102-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:39:42,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:39:42,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:39:42,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:39:42,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:39:42,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:39:42,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:39:42,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:39:42,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:39:42,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:39:42,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:39:42,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:39:42,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:39:42,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:39:42,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:39:42,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:39:42,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:39:42,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:39:42,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:39:42,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:39:42,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:39:42,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:39:42,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:39:42,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:39:42,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:39:42,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:39:42,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:39:42,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:39:42,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:39:42,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:39:42,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:39:42,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:39:42,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:39:42,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:39:42,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:39:42,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:39:42,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:39:42,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:39:42,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:39:42,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:39:42,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:39:42,264 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 08:39:42,288 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:39:42,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:39:42,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:39:42,288 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:39:42,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:39:42,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:39:42,290 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:39:42,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:39:42,290 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:39:42,291 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:39:42,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:39:42,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:39:42,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:39:42,291 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:39:42,292 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:39:42,292 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 08:39:42,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:39:42,292 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:39:42,292 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:39:42,292 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:39:42,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:39:42,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:39:42,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:39:42,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:39:42,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:39:42,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:39:42,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:39:42,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:39:42,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:39:42,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f [2021-10-28 08:39:42,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:39:42,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:39:42,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:39:42,596 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:39:42,598 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:39:42,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety/test-0102-1.i [2021-10-28 08:39:42,679 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/data/e609e2025/6b9afb2d34514fdf98c1b19ff402f0da/FLAG97d89ec84 [2021-10-28 08:39:43,194 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:39:43,195 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/sv-benchmarks/c/memsafety/test-0102-1.i [2021-10-28 08:39:43,212 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/data/e609e2025/6b9afb2d34514fdf98c1b19ff402f0da/FLAG97d89ec84 [2021-10-28 08:39:43,518 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/data/e609e2025/6b9afb2d34514fdf98c1b19ff402f0da [2021-10-28 08:39:43,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:39:43,523 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:39:43,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:39:43,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:39:43,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:39:43,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:39:43" (1/1) ... [2021-10-28 08:39:43,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2d0e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:43, skipping insertion in model container [2021-10-28 08:39:43,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:39:43" (1/1) ... [2021-10-28 08:39:43,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:39:43,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:39:43,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:39:43,974 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-28 08:39:43,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@9d1be59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:43, skipping insertion in model container [2021-10-28 08:39:43,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:39:43,976 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-28 08:39:43,978 INFO L168 Benchmark]: Toolchain (without parser) took 454.08 ms. Allocated memory is still 136.3 MB. Free memory was 98.4 MB in the beginning and 110.8 MB in the end (delta: -12.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:39:43,980 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 136.3 MB. Free memory is still 117.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:39:43,982 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.10 ms. Allocated memory is still 136.3 MB. Free memory was 98.2 MB in the beginning and 110.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:39:43,984 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 136.3 MB. Free memory is still 117.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 451.10 ms. Allocated memory is still 136.3 MB. Free memory was 98.2 MB in the beginning and 110.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 551]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:39:46,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:39:46,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:39:46,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:39:46,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:39:46,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:39:46,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:39:46,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:39:46,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:39:46,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:39:46,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:39:46,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:39:46,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:39:46,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:39:46,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:39:46,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:39:46,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:39:46,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:39:46,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:39:46,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:39:46,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:39:46,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:39:46,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:39:46,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:39:46,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:39:46,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:39:46,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:39:46,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:39:46,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:39:46,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:39:46,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:39:46,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:39:46,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:39:46,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:39:46,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:39:46,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:39:46,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:39:46,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:39:46,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:39:46,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:39:46,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:39:46,448 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 08:39:46,472 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:39:46,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:39:46,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:39:46,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:39:46,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:39:46,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:39:46,475 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:39:46,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:39:46,476 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:39:46,476 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:39:46,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:39:46,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:39:46,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:39:46,477 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:39:46,477 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:39:46,478 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 08:39:46,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:39:46,478 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:39:46,478 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 08:39:46,479 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 08:39:46,479 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:39:46,479 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:39:46,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:39:46,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:39:46,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:39:46,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:39:46,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:39:46,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:39:46,482 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 08:39:46,482 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 08:39:46,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:39:46,482 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 08:39:46,483 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_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f [2021-10-28 08:39:46,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:39:46,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:39:46,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:39:46,969 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:39:46,971 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:39:46,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety/test-0102-1.i [2021-10-28 08:39:47,058 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/data/fb4f75c7c/431044b7d79948cb85470016fb0c2a1f/FLAG0c0b6c3f5 [2021-10-28 08:39:47,689 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:39:47,690 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/sv-benchmarks/c/memsafety/test-0102-1.i [2021-10-28 08:39:47,715 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/data/fb4f75c7c/431044b7d79948cb85470016fb0c2a1f/FLAG0c0b6c3f5 [2021-10-28 08:39:47,995 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/data/fb4f75c7c/431044b7d79948cb85470016fb0c2a1f [2021-10-28 08:39:47,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:39:48,002 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:39:48,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:39:48,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:39:48,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:39:48,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:39:47" (1/1) ... [2021-10-28 08:39:48,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65cfb9f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:48, skipping insertion in model container [2021-10-28 08:39:48,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:39:47" (1/1) ... [2021-10-28 08:39:48,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:39:48,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:39:48,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:39:48,560 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-28 08:39:48,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:39:48,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:39:48,627 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:39:48,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:39:48,744 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:39:48,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:48 WrapperNode [2021-10-28 08:39:48,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:39:48,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:39:48,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:39:48,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:39:48,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:48" (1/1) ... [2021-10-28 08:39:48,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:48" (1/1) ... [2021-10-28 08:39:48,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:48" (1/1) ... [2021-10-28 08:39:48,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:48" (1/1) ... [2021-10-28 08:39:48,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:48" (1/1) ... [2021-10-28 08:39:48,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:48" (1/1) ... [2021-10-28 08:39:48,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:48" (1/1) ... [2021-10-28 08:39:48,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:39:48,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:39:48,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:39:48,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:39:48,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:48" (1/1) ... [2021-10-28 08:39:48,837 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:39:48,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:48,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:39:48,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:39:48,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 08:39:48,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:39:48,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 08:39:48,906 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 08:39:48,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 08:39:48,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 08:39:48,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 08:39:48,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 08:39:48,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 08:39:48,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-10-28 08:39:48,908 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-10-28 08:39:48,908 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_sub [2021-10-28 08:39:48,908 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_top [2021-10-28 08:39:48,909 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_sub [2021-10-28 08:39:48,909 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sub_list [2021-10-28 08:39:48,909 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_top [2021-10-28 08:39:48,909 INFO L138 BoogieDeclarations]: Found implementation of procedure create_top [2021-10-28 08:39:48,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 08:39:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 08:39:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 08:39:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 08:39:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 08:39:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 08:39:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:39:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 08:39:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 08:39:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 08:39:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 08:39:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 08:39:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 08:39:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 08:39:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 08:39:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 08:39:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 08:39:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 08:39:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 08:39:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 08:39:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 08:39:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 08:39:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 08:39:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 08:39:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 08:39:48,915 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 08:39:48,915 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 08:39:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 08:39:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 08:39:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 08:39:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 08:39:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 08:39:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 08:39:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 08:39:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 08:39:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 08:39:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 08:39:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 08:39:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 08:39:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 08:39:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 08:39:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 08:39:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 08:39:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 08:39:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 08:39:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 08:39:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 08:39:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 08:39:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 08:39:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 08:39:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 08:39:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 08:39:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 08:39:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 08:39:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 08:39:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 08:39:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 08:39:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 08:39:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 08:39:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 08:39:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 08:39:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 08:39:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 08:39:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 08:39:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 08:39:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 08:39:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 08:39:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 08:39:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 08:39:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 08:39:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 08:39:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 08:39:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 08:39:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 08:39:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 08:39:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 08:39:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 08:39:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 08:39:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 08:39:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 08:39:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 08:39:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 08:39:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 08:39:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 08:39:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 08:39:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 08:39:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 08:39:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 08:39:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 08:39:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 08:39:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 08:39:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 08:39:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 08:39:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 08:39:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 08:39:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 08:39:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 08:39:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 08:39:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 08:39:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 08:39:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 08:39:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 08:39:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 08:39:48,936 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 08:39:48,936 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 08:39:48,936 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 08:39:48,937 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 08:39:48,940 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 08:39:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 08:39:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 08:39:48,941 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 08:39:48,942 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 08:39:48,943 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 08:39:48,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 08:39:48,943 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-10-28 08:39:48,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 08:39:48,960 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-10-28 08:39:48,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 08:39:48,961 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_sub [2021-10-28 08:39:48,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:39:48,961 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_top [2021-10-28 08:39:48,962 INFO L130 BoogieDeclarations]: Found specification of procedure insert_sub [2021-10-28 08:39:48,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 08:39:48,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 08:39:48,963 INFO L130 BoogieDeclarations]: Found specification of procedure create_sub_list [2021-10-28 08:39:48,963 INFO L130 BoogieDeclarations]: Found specification of procedure insert_top [2021-10-28 08:39:48,963 INFO L130 BoogieDeclarations]: Found specification of procedure create_top [2021-10-28 08:39:48,967 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 08:39:48,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-28 08:39:48,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 08:39:48,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 08:39:48,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:39:48,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-28 08:39:48,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 08:39:48,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 08:39:48,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 08:39:49,789 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:39:49,789 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 08:39:49,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:39:49 BoogieIcfgContainer [2021-10-28 08:39:49,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:39:49,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:39:49,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:39:49,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:39:49,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:39:47" (1/3) ... [2021-10-28 08:39:49,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31da0482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:39:49, skipping insertion in model container [2021-10-28 08:39:49,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:48" (2/3) ... [2021-10-28 08:39:49,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31da0482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:39:49, skipping insertion in model container [2021-10-28 08:39:49,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:39:49" (3/3) ... [2021-10-28 08:39:49,801 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0102-1.i [2021-10-28 08:39:49,806 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:39:49,806 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2021-10-28 08:39:49,851 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:39:49,857 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 08:39:49,857 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-10-28 08:39:49,875 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 82 states have internal predecessors, (92), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-10-28 08:39:49,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 08:39:49,883 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:39:49,884 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:39:49,884 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting create_sub_listErr0REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-28 08:39:49,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:49,890 INFO L85 PathProgramCache]: Analyzing trace with hash -901593530, now seen corresponding path program 1 times [2021-10-28 08:39:49,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:39:49,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395542594] [2021-10-28 08:39:49,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:49,904 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:39:49,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:39:49,910 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:39:49,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 08:39:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:50,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 08:39:50,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:50,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:39:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:50,283 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:39:50,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395542594] [2021-10-28 08:39:50,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395542594] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:39:50,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:39:50,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 08:39:50,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679925400] [2021-10-28 08:39:50,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 08:39:50,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:39:50,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 08:39:50,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:39:50,310 INFO L87 Difference]: Start difference. First operand has 106 states, 53 states have (on average 1.7358490566037736) internal successors, (92), 82 states have internal predecessors, (92), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:39:50,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:50,339 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2021-10-28 08:39:50,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 08:39:50,341 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-10-28 08:39:50,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:39:50,351 INFO L225 Difference]: With dead ends: 106 [2021-10-28 08:39:50,352 INFO L226 Difference]: Without dead ends: 103 [2021-10-28 08:39:50,354 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:39:50,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-28 08:39:50,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-10-28 08:39:50,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 50 states have (on average 1.68) internal successors, (84), 80 states have internal predecessors, (84), 13 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-10-28 08:39:50,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2021-10-28 08:39:50,411 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 14 [2021-10-28 08:39:50,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:39:50,412 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2021-10-28 08:39:50,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:39:50,412 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2021-10-28 08:39:50,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 08:39:50,413 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:39:50,413 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:39:50,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:50,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:39:50,625 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting create_sub_listErr0REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-28 08:39:50,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:50,625 INFO L85 PathProgramCache]: Analyzing trace with hash -901533948, now seen corresponding path program 1 times [2021-10-28 08:39:50,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:39:50,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259349688] [2021-10-28 08:39:50,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:50,627 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:39:50,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:39:50,628 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:39:50,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 08:39:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:50,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 08:39:50,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:50,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:39:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:50,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:39:51,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:51,037 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:39:51,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259349688] [2021-10-28 08:39:51,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259349688] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:39:51,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:39:51,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 08:39:51,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689159204] [2021-10-28 08:39:51,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:39:51,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:39:51,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:39:51,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:39:51,057 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:39:51,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:51,379 INFO L93 Difference]: Finished difference Result 109 states and 117 transitions. [2021-10-28 08:39:51,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:39:51,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-10-28 08:39:51,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:39:51,383 INFO L225 Difference]: With dead ends: 109 [2021-10-28 08:39:51,383 INFO L226 Difference]: Without dead ends: 109 [2021-10-28 08:39:51,384 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:39:51,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-28 08:39:51,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2021-10-28 08:39:51,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 52 states have (on average 1.6538461538461537) internal successors, (86), 80 states have internal predecessors, (86), 13 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-10-28 08:39:51,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 111 transitions. [2021-10-28 08:39:51,398 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 111 transitions. Word has length 14 [2021-10-28 08:39:51,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:39:51,398 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 111 transitions. [2021-10-28 08:39:51,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:39:51,399 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 111 transitions. [2021-10-28 08:39:51,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 08:39:51,399 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:39:51,399 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:39:51,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:51,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:39:51,611 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting create_sub_listErr1REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-28 08:39:51,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:51,612 INFO L85 PathProgramCache]: Analyzing trace with hash -901533947, now seen corresponding path program 1 times [2021-10-28 08:39:51,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:39:51,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881525624] [2021-10-28 08:39:51,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:51,613 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:39:51,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:39:51,614 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:39:51,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 08:39:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:51,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 08:39:51,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:51,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:39:51,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:51,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:39:52,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:52,143 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:39:52,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881525624] [2021-10-28 08:39:52,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881525624] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:39:52,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:39:52,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-28 08:39:52,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097971798] [2021-10-28 08:39:52,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:39:52,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:39:52,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:39:52,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:39:52,145 INFO L87 Difference]: Start difference. First operand 104 states and 111 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:39:52,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:52,778 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2021-10-28 08:39:52,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:39:52,783 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-10-28 08:39:52,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:39:52,784 INFO L225 Difference]: With dead ends: 107 [2021-10-28 08:39:52,785 INFO L226 Difference]: Without dead ends: 107 [2021-10-28 08:39:52,785 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:39:52,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-28 08:39:52,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2021-10-28 08:39:52,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 53 states have (on average 1.6226415094339623) internal successors, (86), 81 states have internal predecessors, (86), 13 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-10-28 08:39:52,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2021-10-28 08:39:52,795 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 14 [2021-10-28 08:39:52,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:39:52,795 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2021-10-28 08:39:52,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:39:52,796 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2021-10-28 08:39:52,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 08:39:52,796 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:39:52,796 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:39:52,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:53,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:39:53,010 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting insert_subErr0REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-28 08:39:53,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:53,010 INFO L85 PathProgramCache]: Analyzing trace with hash -732602635, now seen corresponding path program 1 times [2021-10-28 08:39:53,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:39:53,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693253879] [2021-10-28 08:39:53,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:53,011 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:39:53,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:39:53,012 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:39:53,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 08:39:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:53,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:39:53,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:53,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:39:53,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:53,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:39:53,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:53,301 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:39:53,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693253879] [2021-10-28 08:39:53,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693253879] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:39:53,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:39:53,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 08:39:53,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927728527] [2021-10-28 08:39:53,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:39:53,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:39:53,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:39:53,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:39:53,303 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:39:53,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:53,436 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2021-10-28 08:39:53,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:39:53,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-28 08:39:53,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:39:53,438 INFO L225 Difference]: With dead ends: 104 [2021-10-28 08:39:53,438 INFO L226 Difference]: Without dead ends: 104 [2021-10-28 08:39:53,439 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:39:53,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-28 08:39:53,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-10-28 08:39:53,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 53 states have (on average 1.6037735849056605) internal successors, (85), 80 states have internal predecessors, (85), 13 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-10-28 08:39:53,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 110 transitions. [2021-10-28 08:39:53,447 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 110 transitions. Word has length 19 [2021-10-28 08:39:53,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:39:53,447 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 110 transitions. [2021-10-28 08:39:53,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:39:53,447 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 110 transitions. [2021-10-28 08:39:53,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 08:39:53,448 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:39:53,448 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:39:53,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:53,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:39:53,660 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting insert_subErr1REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-28 08:39:53,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:53,661 INFO L85 PathProgramCache]: Analyzing trace with hash -732602634, now seen corresponding path program 1 times [2021-10-28 08:39:53,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:39:53,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030606685] [2021-10-28 08:39:53,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:53,662 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:39:53,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:39:53,663 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:39:53,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 08:39:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:53,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 08:39:53,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:53,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:39:53,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:53,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:39:54,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:54,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:39:54,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030606685] [2021-10-28 08:39:54,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030606685] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:39:54,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:39:54,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-28 08:39:54,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698579723] [2021-10-28 08:39:54,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:39:54,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:39:54,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:39:54,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:39:54,030 INFO L87 Difference]: Start difference. First operand 104 states and 110 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:39:54,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:54,271 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2021-10-28 08:39:54,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:39:54,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-28 08:39:54,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:39:54,276 INFO L225 Difference]: With dead ends: 103 [2021-10-28 08:39:54,276 INFO L226 Difference]: Without dead ends: 103 [2021-10-28 08:39:54,276 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:39:54,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-28 08:39:54,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-10-28 08:39:54,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 79 states have internal predecessors, (84), 13 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-10-28 08:39:54,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2021-10-28 08:39:54,284 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 19 [2021-10-28 08:39:54,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:39:54,284 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2021-10-28 08:39:54,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:39:54,285 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2021-10-28 08:39:54,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 08:39:54,285 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:39:54,286 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:39:54,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:54,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:39:54,493 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting list_add_tailErr0REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-28 08:39:54,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:54,493 INFO L85 PathProgramCache]: Analyzing trace with hash 2058851786, now seen corresponding path program 1 times [2021-10-28 08:39:54,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:39:54,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710009631] [2021-10-28 08:39:54,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:54,494 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:39:54,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:39:54,496 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:39:54,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 08:39:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:54,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 08:39:54,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:54,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:39:54,839 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-28 08:39:54,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 25 [2021-10-28 08:39:55,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:55,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:39:55,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:55,193 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:39:55,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710009631] [2021-10-28 08:39:55,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710009631] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:39:55,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:39:55,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2021-10-28 08:39:55,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037562097] [2021-10-28 08:39:55,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 08:39:55,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:39:55,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:39:55,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:39:55,195 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 8 states have internal predecessors, (19), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:39:55,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:55,920 INFO L93 Difference]: Finished difference Result 111 states and 118 transitions. [2021-10-28 08:39:55,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:39:55,921 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 8 states have internal predecessors, (19), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-10-28 08:39:55,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:39:55,922 INFO L225 Difference]: With dead ends: 111 [2021-10-28 08:39:55,922 INFO L226 Difference]: Without dead ends: 111 [2021-10-28 08:39:55,923 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-10-28 08:39:55,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-28 08:39:55,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2021-10-28 08:39:55,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 57 states have (on average 1.5614035087719298) internal successors, (89), 83 states have internal predecessors, (89), 14 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-10-28 08:39:55,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 116 transitions. [2021-10-28 08:39:55,931 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 116 transitions. Word has length 22 [2021-10-28 08:39:55,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:39:55,931 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 116 transitions. [2021-10-28 08:39:55,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 8 states have internal predecessors, (19), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:39:55,932 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 116 transitions. [2021-10-28 08:39:55,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 08:39:55,932 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:39:55,932 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:39:55,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 08:39:56,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:39:56,144 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting list_add_tailErr1REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-28 08:39:56,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:56,145 INFO L85 PathProgramCache]: Analyzing trace with hash 2058851787, now seen corresponding path program 1 times [2021-10-28 08:39:56,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:39:56,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595479093] [2021-10-28 08:39:56,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:56,146 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:39:56,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:39:56,147 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:39:56,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 08:39:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:56,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-28 08:39:56,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:39:56,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:39:56,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:39:56,661 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 08:39:56,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-10-28 08:39:56,672 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 08:39:56,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-10-28 08:39:56,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:56,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:39:58,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:58,591 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:39:58,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595479093] [2021-10-28 08:39:58,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595479093] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:39:58,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:39:58,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-10-28 08:39:58,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341078933] [2021-10-28 08:39:58,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 08:39:58,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:39:58,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 08:39:58,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-10-28 08:39:58,594 INFO L87 Difference]: Start difference. First operand 109 states and 116 transitions. Second operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 10 states have internal predecessors, (24), 7 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:40:06,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:40:06,095 INFO L93 Difference]: Finished difference Result 126 states and 134 transitions. [2021-10-28 08:40:06,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 08:40:06,096 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 10 states have internal predecessors, (24), 7 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-10-28 08:40:06,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:40:06,098 INFO L225 Difference]: With dead ends: 126 [2021-10-28 08:40:06,098 INFO L226 Difference]: Without dead ends: 126 [2021-10-28 08:40:06,098 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-10-28 08:40:06,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-28 08:40:06,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2021-10-28 08:40:06,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 94 states have internal predecessors, (99), 17 states have call successors, (17), 14 states have call predecessors, (17), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-28 08:40:06,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 132 transitions. [2021-10-28 08:40:06,109 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 132 transitions. Word has length 22 [2021-10-28 08:40:06,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:40:06,109 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 132 transitions. [2021-10-28 08:40:06,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 10 states have internal predecessors, (24), 7 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:40:06,110 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 132 transitions. [2021-10-28 08:40:06,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 08:40:06,110 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:40:06,111 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:40:06,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 08:40:06,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:40:06,322 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __list_addErr0REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-28 08:40:06,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:06,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1174239143, now seen corresponding path program 1 times [2021-10-28 08:40:06,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:40:06,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146384830] [2021-10-28 08:40:06,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:06,323 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:40:06,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:40:06,324 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:40:06,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-28 08:40:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:06,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:40:06,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:40:06,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:06,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:40:06,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:06,829 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:40:06,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146384830] [2021-10-28 08:40:06,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146384830] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:40:06,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:40:06,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 08:40:06,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014163328] [2021-10-28 08:40:06,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:40:06,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:40:06,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:40:06,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:40:06,833 INFO L87 Difference]: Start difference. First operand 125 states and 132 transitions. Second operand has 5 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:40:07,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:40:07,156 INFO L93 Difference]: Finished difference Result 124 states and 131 transitions. [2021-10-28 08:40:07,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:40:07,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-10-28 08:40:07,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:40:07,159 INFO L225 Difference]: With dead ends: 124 [2021-10-28 08:40:07,159 INFO L226 Difference]: Without dead ends: 124 [2021-10-28 08:40:07,160 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:40:07,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-28 08:40:07,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-10-28 08:40:07,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 67 states have (on average 1.462686567164179) internal successors, (98), 93 states have internal predecessors, (98), 17 states have call successors, (17), 14 states have call predecessors, (17), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-28 08:40:07,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 131 transitions. [2021-10-28 08:40:07,174 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 131 transitions. Word has length 25 [2021-10-28 08:40:07,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:40:07,175 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 131 transitions. [2021-10-28 08:40:07,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:40:07,175 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 131 transitions. [2021-10-28 08:40:07,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 08:40:07,176 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:40:07,176 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:40:07,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-28 08:40:07,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:40:07,378 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __list_addErr1REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-28 08:40:07,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:07,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1174239142, now seen corresponding path program 1 times [2021-10-28 08:40:07,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:40:07,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627353969] [2021-10-28 08:40:07,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:07,379 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:40:07,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:40:07,380 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:40:07,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-28 08:40:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:07,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 08:40:07,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:40:07,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:07,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:40:08,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-28 08:40:08,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:08,961 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:40:08,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627353969] [2021-10-28 08:40:08,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627353969] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:40:08,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:40:08,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 21 [2021-10-28 08:40:08,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643822245] [2021-10-28 08:40:08,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-28 08:40:08,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:40:08,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-28 08:40:08,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2021-10-28 08:40:08,964 INFO L87 Difference]: Start difference. First operand 124 states and 131 transitions. Second operand has 22 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 14 states have internal predecessors, (28), 9 states have call successors, (12), 9 states have call predecessors, (12), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:40:11,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:40:11,464 INFO L93 Difference]: Finished difference Result 136 states and 142 transitions. [2021-10-28 08:40:11,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 08:40:11,466 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 14 states have internal predecessors, (28), 9 states have call successors, (12), 9 states have call predecessors, (12), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-10-28 08:40:11,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:40:11,467 INFO L225 Difference]: With dead ends: 136 [2021-10-28 08:40:11,468 INFO L226 Difference]: Without dead ends: 136 [2021-10-28 08:40:11,468 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2021-10-28 08:40:11,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-28 08:40:11,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 130. [2021-10-28 08:40:11,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 73 states have (on average 1.4931506849315068) internal successors, (109), 98 states have internal predecessors, (109), 17 states have call successors, (17), 15 states have call predecessors, (17), 14 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-28 08:40:11,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 142 transitions. [2021-10-28 08:40:11,476 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 142 transitions. Word has length 25 [2021-10-28 08:40:11,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:40:11,477 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 142 transitions. [2021-10-28 08:40:11,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 14 states have internal predecessors, (28), 9 states have call successors, (12), 9 states have call predecessors, (12), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:40:11,477 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 142 transitions. [2021-10-28 08:40:11,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 08:40:11,478 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:40:11,478 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:40:11,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-28 08:40:11,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:40:11,692 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __list_addErr2REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-28 08:40:11,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:11,692 INFO L85 PathProgramCache]: Analyzing trace with hash -2041674979, now seen corresponding path program 1 times [2021-10-28 08:40:11,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:40:11,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019913662] [2021-10-28 08:40:11,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:11,693 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:40:11,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:40:11,694 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:40:11,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-28 08:40:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:11,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 08:40:11,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:40:12,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:40:12,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:12,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:40:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:12,244 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:40:12,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019913662] [2021-10-28 08:40:12,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019913662] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:40:12,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:40:12,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-28 08:40:12,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122806363] [2021-10-28 08:40:12,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:40:12,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:40:12,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:40:12,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:40:12,245 INFO L87 Difference]: Start difference. First operand 130 states and 142 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:40:12,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:40:12,746 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2021-10-28 08:40:12,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:40:12,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-10-28 08:40:12,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:40:12,749 INFO L225 Difference]: With dead ends: 140 [2021-10-28 08:40:12,749 INFO L226 Difference]: Without dead ends: 140 [2021-10-28 08:40:12,749 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:40:12,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-28 08:40:12,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2021-10-28 08:40:12,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 79 states have (on average 1.4683544303797469) internal successors, (116), 103 states have internal predecessors, (116), 17 states have call successors, (17), 16 states have call predecessors, (17), 15 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-28 08:40:12,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 149 transitions. [2021-10-28 08:40:12,756 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 149 transitions. Word has length 26 [2021-10-28 08:40:12,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:40:12,757 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 149 transitions. [2021-10-28 08:40:12,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:40:12,757 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 149 transitions. [2021-10-28 08:40:12,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 08:40:12,758 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:40:12,759 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:40:12,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-28 08:40:12,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:40:12,966 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __list_addErr3REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-28 08:40:12,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:12,966 INFO L85 PathProgramCache]: Analyzing trace with hash -2041674978, now seen corresponding path program 1 times [2021-10-28 08:40:12,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:40:12,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865742406] [2021-10-28 08:40:12,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:12,967 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:40:12,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:40:12,967 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:40:12,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-28 08:40:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:13,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 08:40:13,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:40:13,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:40:13,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:13,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:40:14,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:14,048 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:40:14,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865742406] [2021-10-28 08:40:14,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865742406] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:40:14,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:40:14,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-28 08:40:14,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219296903] [2021-10-28 08:40:14,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 08:40:14,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:40:14,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:40:14,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:40:14,050 INFO L87 Difference]: Start difference. First operand 136 states and 149 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:40:15,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:40:15,368 INFO L93 Difference]: Finished difference Result 138 states and 145 transitions. [2021-10-28 08:40:15,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 08:40:15,370 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-10-28 08:40:15,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:40:15,372 INFO L225 Difference]: With dead ends: 138 [2021-10-28 08:40:15,372 INFO L226 Difference]: Without dead ends: 138 [2021-10-28 08:40:15,372 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-28 08:40:15,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-28 08:40:15,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2021-10-28 08:40:15,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 79 states have (on average 1.4177215189873418) internal successors, (112), 103 states have internal predecessors, (112), 17 states have call successors, (17), 16 states have call predecessors, (17), 15 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-10-28 08:40:15,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 145 transitions. [2021-10-28 08:40:15,379 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 145 transitions. Word has length 26 [2021-10-28 08:40:15,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:40:15,379 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 145 transitions. [2021-10-28 08:40:15,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:40:15,379 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 145 transitions. [2021-10-28 08:40:15,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 08:40:15,380 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:40:15,380 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:40:15,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-28 08:40:15,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:40:15,590 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __list_addErr6REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-28 08:40:15,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:15,590 INFO L85 PathProgramCache]: Analyzing trace with hash 750402304, now seen corresponding path program 1 times [2021-10-28 08:40:15,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:40:15,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878112574] [2021-10-28 08:40:15,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:15,591 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:40:15,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:40:15,601 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:40:15,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-28 08:40:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:15,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-28 08:40:15,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:40:16,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:40:16,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 08:40:16,158 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-10-28 08:40:16,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-10-28 08:40:16,335 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 08:40:16,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-10-28 08:40:16,578 INFO L354 Elim1Store]: treesize reduction 562, result has 2.9 percent of original size [2021-10-28 08:40:16,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 27 [2021-10-28 08:40:16,800 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-28 08:40:16,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 20 [2021-10-28 08:40:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:16,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:40:17,101 INFO L354 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2021-10-28 08:40:17,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-10-28 08:40:19,385 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.base| c_insert_sub_~sub~0.base (store (store (store (store (select |c_#memory_$Pointer$.base| c_insert_sub_~sub~0.base) insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_4)) c_insert_sub_~head.base) (bvadd (_ bv4 32) c_insert_sub_~head.offset)) c_insert_sub_~head.base)) is different from false [2021-10-28 08:40:21,476 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_insert_sub_~sub~0.base_16 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_16))))) (= |c_insert_sub_#in~head.base| (select (select (store |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_16 (store (store (store (store (select |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_16) insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_4)) |c_insert_sub_#in~head.base|) (bvadd (_ bv4 32) |c_insert_sub_#in~head.offset|))))) is different from false [2021-10-28 08:40:23,553 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_insert_sub_~sub~0.base_16 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_16))))))) (= c_create_sub_list_~sub.base (select (select (store |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_16 (store (store (store (store (select |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_16) insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_4)) c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset))))) is different from false [2021-10-28 08:40:25,650 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_insert_sub_~sub~0.base_16 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_16))))))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.base)))) (store .cse0 v_insert_sub_~sub~0.base_16 (store (store (store (store (select .cse0 v_insert_sub_~sub~0.base_16) insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_4))) c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset)) c_create_sub_list_~sub.base))) is different from false [2021-10-28 08:40:27,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:27,997 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:40:27,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878112574] [2021-10-28 08:40:27,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878112574] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:40:27,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:40:27,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 21 [2021-10-28 08:40:27,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218901556] [2021-10-28 08:40:27,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-28 08:40:27,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:40:27,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-28 08:40:27,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=269, Unknown=4, NotChecked=140, Total=462 [2021-10-28 08:40:27,999 INFO L87 Difference]: Start difference. First operand 136 states and 145 transitions. Second operand has 22 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 7 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:40:30,233 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_insert_sub_~sub~0.base_16 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_16))))))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.base)))) (store .cse0 v_insert_sub_~sub~0.base_16 (store (store (store (store (select .cse0 v_insert_sub_~sub~0.base_16) insert_sub_~sub~0.offset v_DerPreprocessor_1) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_3) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_4))) c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset)) c_create_sub_list_~sub.base))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_create_sub_list_#in~sub.base|)) (_ bv1 1))) (= c_create_sub_list_~sub.base (select (select |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| c_create_sub_list_~sub.base)) (_ bv1 1)))) is different from false [2021-10-28 08:40:49,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:40:49,981 INFO L93 Difference]: Finished difference Result 169 states and 183 transitions. [2021-10-28 08:40:49,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 08:40:49,982 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 7 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-10-28 08:40:49,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:40:49,984 INFO L225 Difference]: With dead ends: 169 [2021-10-28 08:40:49,984 INFO L226 Difference]: Without dead ends: 169 [2021-10-28 08:40:49,985 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 29.2s TimeCoverageRelationStatistics Valid=79, Invalid=442, Unknown=5, NotChecked=230, Total=756 [2021-10-28 08:40:49,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-10-28 08:40:49,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 166. [2021-10-28 08:40:49,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 101 states have (on average 1.3465346534653466) internal successors, (136), 127 states have internal predecessors, (136), 23 states have call successors, (23), 22 states have call predecessors, (23), 17 states have return successors, (22), 16 states have call predecessors, (22), 22 states have call successors, (22) [2021-10-28 08:40:49,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 181 transitions. [2021-10-28 08:40:49,996 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 181 transitions. Word has length 28 [2021-10-28 08:40:49,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:40:49,997 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 181 transitions. [2021-10-28 08:40:49,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 7 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:40:49,997 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 181 transitions. [2021-10-28 08:40:49,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 08:40:49,998 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:40:49,998 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:40:50,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-28 08:40:50,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:40:50,214 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __list_addErr7REQUIRES_VIOLATION === [insert_subErr0REQUIRES_VIOLATION, insert_subErr1REQUIRES_VIOLATION, list_add_tailErr0REQUIRES_VIOLATION, list_add_tailErr1REQUIRES_VIOLATION (and 27 more)] === [2021-10-28 08:40:50,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:40:50,214 INFO L85 PathProgramCache]: Analyzing trace with hash 750402305, now seen corresponding path program 1 times [2021-10-28 08:40:50,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:40:50,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719847178] [2021-10-28 08:40:50,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:40:50,215 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:40:50,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:40:50,216 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:40:50,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-28 08:40:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:40:50,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-28 08:40:50,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:40:50,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:40:50,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:40:50,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 08:40:50,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 08:40:50,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 08:40:50,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-28 08:40:51,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 08:40:51,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-28 08:40:51,301 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-28 08:40:51,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-10-28 08:40:51,369 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 08:40:51,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-10-28 08:40:51,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 08:40:51,829 INFO L354 Elim1Store]: treesize reduction 552, result has 3.0 percent of original size [2021-10-28 08:40:51,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 134 treesize of output 92 [2021-10-28 08:40:51,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 08:40:51,988 INFO L354 Elim1Store]: treesize reduction 552, result has 3.0 percent of original size [2021-10-28 08:40:51,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 86 treesize of output 44 [2021-10-28 08:40:52,435 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 08:40:52,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 36 [2021-10-28 08:40:52,467 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 08:40:52,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 18 [2021-10-28 08:40:52,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:40:52,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:41:51,597 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_insert_sub_~sub~0.base_17 (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse1 (bvadd insert_sub_~sub~0.offset (_ bv1 32))) (.cse2 (bvadd (_ bv2 32) insert_sub_~sub~0.offset)) (.cse3 (bvadd (_ bv3 32) insert_sub_~sub~0.offset)) (.cse4 (bvadd (_ bv4 32) c_create_sub_list_~sub.offset))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.offset)))) (store .cse0 v_insert_sub_~sub~0.base_17 (store (store (store (store (select .cse0 v_insert_sub_~sub~0.base_17) insert_sub_~sub~0.offset v_DerPreprocessor_9) .cse1 v_DerPreprocessor_10) .cse2 v_DerPreprocessor_11) .cse3 v_DerPreprocessor_12))) c_create_sub_list_~sub.base) .cse4)) (select (store |c_#length| v_insert_sub_~sub~0.base_17 (_ bv12 32)) (select (select (let ((.cse5 (store |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.base)))) (store .cse5 v_insert_sub_~sub~0.base_17 (store (store (store (store (select .cse5 v_insert_sub_~sub~0.base_17) insert_sub_~sub~0.offset v_DerPreprocessor_5) .cse1 v_DerPreprocessor_6) .cse2 v_DerPreprocessor_7) .cse3 v_DerPreprocessor_8))) c_create_sub_list_~sub.base) .cse4))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse6 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.offset)))) (store .cse7 v_insert_sub_~sub~0.base_17 (store (store (store (store (select .cse7 v_insert_sub_~sub~0.base_17) insert_sub_~sub~0.offset v_DerPreprocessor_9) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_11) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_12))) c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset)))) (bvule .cse6 (bvadd (_ bv4 32) .cse6))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_17))))))) is different from false [2021-10-28 08:41:56,700 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:41:56,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719847178] [2021-10-28 08:41:56,702 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-28 08:41:56,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1028678407] [2021-10-28 08:41:56,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:41:56,702 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-28 08:41:56,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/cvc4 [2021-10-28 08:41:56,705 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-28 08:41:56,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-10-28 08:41:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:41:57,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-28 08:41:57,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:41:57,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:41:57,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:41:57,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 08:41:57,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 08:41:57,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 08:41:57,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-28 08:41:57,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 08:41:57,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-28 08:41:57,890 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 08:41:57,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-10-28 08:41:57,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-10-28 08:41:58,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 08:41:58,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 08:41:58,088 INFO L354 Elim1Store]: treesize reduction 154, result has 0.6 percent of original size [2021-10-28 08:41:58,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 129 treesize of output 87 [2021-10-28 08:41:58,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 08:41:58,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 08:41:58,117 INFO L354 Elim1Store]: treesize reduction 154, result has 0.6 percent of original size [2021-10-28 08:41:58,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 39 [2021-10-28 08:41:59,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-28 08:41:59,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-28 08:42:00,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:00,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:42:03,557 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse0 (bvadd insert_sub_~sub~0.offset (_ bv1 32))) (.cse1 (bvadd (_ bv2 32) insert_sub_~sub~0.offset)) (.cse2 (bvadd (_ bv3 32) insert_sub_~sub~0.offset)) (.cse3 (bvadd (_ bv4 32) c_insert_sub_~head.offset))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| c_insert_sub_~sub~0.base (store (store (store (store (select |c_#memory_$Pointer$.offset| c_insert_sub_~sub~0.base) insert_sub_~sub~0.offset v_DerPreprocessor_17) .cse0 v_DerPreprocessor_18) .cse1 v_DerPreprocessor_19) .cse2 v_DerPreprocessor_20)) c_insert_sub_~head.base) .cse3) (_ bv4 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| c_insert_sub_~sub~0.base (store (store (store (store (select |c_#memory_$Pointer$.base| c_insert_sub_~sub~0.base) insert_sub_~sub~0.offset v_DerPreprocessor_13) .cse0 v_DerPreprocessor_14) .cse1 v_DerPreprocessor_15) .cse2 v_DerPreprocessor_16)) c_insert_sub_~head.base) .cse3))))) (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| c_insert_sub_~sub~0.base (store (store (store (store (select |c_#memory_$Pointer$.offset| c_insert_sub_~sub~0.base) insert_sub_~sub~0.offset v_DerPreprocessor_17) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_18) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_19) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_20)) c_insert_sub_~head.base) (bvadd (_ bv4 32) c_insert_sub_~head.offset)))) (bvule .cse4 (bvadd .cse4 (_ bv4 32)))))) is different from false [2021-10-28 08:42:30,338 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_insert_sub_~sub~0.base_18 (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse0 (bvadd insert_sub_~sub~0.offset (_ bv1 32))) (.cse1 (bvadd (_ bv2 32) insert_sub_~sub~0.offset)) (.cse2 (bvadd (_ bv3 32) insert_sub_~sub~0.offset)) (.cse3 (bvadd (_ bv4 32) c_create_sub_list_~sub.offset))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_18 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_18) insert_sub_~sub~0.offset v_DerPreprocessor_17) .cse0 v_DerPreprocessor_18) .cse1 v_DerPreprocessor_19) .cse2 v_DerPreprocessor_20)) c_create_sub_list_~sub.base) .cse3)) (select (store |c_#length| v_insert_sub_~sub~0.base_18 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_18 (store (store (store (store (select |c_#memory_$Pointer$.base| v_insert_sub_~sub~0.base_18) insert_sub_~sub~0.offset v_DerPreprocessor_13) .cse0 v_DerPreprocessor_14) .cse1 v_DerPreprocessor_15) .cse2 v_DerPreprocessor_16)) c_create_sub_list_~sub.base) .cse3))))) (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_18 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_insert_sub_~sub~0.base_18) insert_sub_~sub~0.offset v_DerPreprocessor_17) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_18) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_19) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_20)) c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset)))) (bvule .cse4 (bvadd (_ bv4 32) .cse4))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_18)))))) is different from false [2021-10-28 08:42:32,680 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_insert_sub_~sub~0.base_18 (_ BitVec 32))) (or (and (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse1 (bvadd insert_sub_~sub~0.offset (_ bv1 32))) (.cse2 (bvadd (_ bv2 32) insert_sub_~sub~0.offset)) (.cse3 (bvadd (_ bv3 32) insert_sub_~sub~0.offset)) (.cse4 (bvadd (_ bv4 32) c_create_sub_list_~sub.offset))) (bvule (bvadd (_ bv4 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.offset)))) (store .cse0 v_insert_sub_~sub~0.base_18 (store (store (store (store (select .cse0 v_insert_sub_~sub~0.base_18) insert_sub_~sub~0.offset v_DerPreprocessor_17) .cse1 v_DerPreprocessor_18) .cse2 v_DerPreprocessor_19) .cse3 v_DerPreprocessor_20))) c_create_sub_list_~sub.base) .cse4)) (select (store |c_#length| v_insert_sub_~sub~0.base_18 (_ bv12 32)) (select (select (let ((.cse5 (store |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.base| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.base)))) (store .cse5 v_insert_sub_~sub~0.base_18 (store (store (store (store (select .cse5 v_insert_sub_~sub~0.base_18) insert_sub_~sub~0.offset v_DerPreprocessor_13) .cse1 v_DerPreprocessor_14) .cse2 v_DerPreprocessor_15) .cse3 v_DerPreprocessor_16))) c_create_sub_list_~sub.base) .cse4))))) (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (insert_sub_~sub~0.offset (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (let ((.cse6 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base (store (select |c_#memory_$Pointer$.offset| c_create_sub_list_~sub.base) c_create_sub_list_~sub.offset c_create_sub_list_~sub.offset)))) (store .cse7 v_insert_sub_~sub~0.base_18 (store (store (store (store (select .cse7 v_insert_sub_~sub~0.base_18) insert_sub_~sub~0.offset v_DerPreprocessor_17) (bvadd insert_sub_~sub~0.offset (_ bv1 32)) v_DerPreprocessor_18) (bvadd (_ bv2 32) insert_sub_~sub~0.offset) v_DerPreprocessor_19) (bvadd (_ bv3 32) insert_sub_~sub~0.offset) v_DerPreprocessor_20))) c_create_sub_list_~sub.base) (bvadd (_ bv4 32) c_create_sub_list_~sub.offset)))) (bvule .cse6 (bvadd (_ bv4 32) .cse6))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_insert_sub_~sub~0.base_18)))))) is different from false [2021-10-28 08:42:38,166 WARN L207 SmtUtils]: Spent 5.27 s on a formula simplification that was a NOOP. DAG size: 2104 [2021-10-28 08:42:38,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-28 08:42:38,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908442] [2021-10-28 08:42:38,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:38,179 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:42:38,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:42:38,194 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:42:38,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 08:42:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:38,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-28 08:42:38,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:42:38,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 08:42:39,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 08:42:39,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 08:42:39,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 08:42:39,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-28 08:42:39,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 08:42:39,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-28 08:42:39,882 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 08:42:39,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-10-28 08:42:39,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-10-28 08:42:40,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 08:42:40,210 INFO L354 Elim1Store]: treesize reduction 552, result has 3.0 percent of original size [2021-10-28 08:42:40,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 134 treesize of output 92 [2021-10-28 08:42:40,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 08:42:40,362 INFO L354 Elim1Store]: treesize reduction 552, result has 3.0 percent of original size [2021-10-28 08:42:40,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 86 treesize of output 44 [2021-10-28 08:42:40,595 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 08:42:40,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 36 [2021-10-28 08:42:40,603 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 08:42:40,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 18 [2021-10-28 08:42:40,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:40,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:44:26,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 08:44:26,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 08:44:26,932 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-28 08:44:26,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75596 treesize of output 75595 [2021-10-28 08:44:27,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-28 08:44:27,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:44:27,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-28 08:44:27,433 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-28 08:44:27,433 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-28 08:44:27,438 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr7REQUIRES_VIOLATION [2021-10-28 08:44:27,440 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_subErr0REQUIRES_VIOLATION [2021-10-28 08:44:27,440 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_subErr1REQUIRES_VIOLATION [2021-10-28 08:44:27,440 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr0REQUIRES_VIOLATION [2021-10-28 08:44:27,441 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location list_add_tailErr1REQUIRES_VIOLATION [2021-10-28 08:44:27,441 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_topErr0REQUIRES_VIOLATION [2021-10-28 08:44:27,441 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_topErr1REQUIRES_VIOLATION [2021-10-28 08:44:27,441 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_topErr2REQUIRES_VIOLATION [2021-10-28 08:44:27,441 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_topErr3REQUIRES_VIOLATION [2021-10-28 08:44:27,441 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_topErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:44:27,441 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_topErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:44:27,441 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_topErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:44:27,441 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr0REQUIRES_VIOLATION [2021-10-28 08:44:27,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr1REQUIRES_VIOLATION [2021-10-28 08:44:27,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr2REQUIRES_VIOLATION [2021-10-28 08:44:27,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr3REQUIRES_VIOLATION [2021-10-28 08:44:27,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr4REQUIRES_VIOLATION [2021-10-28 08:44:27,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr5REQUIRES_VIOLATION [2021-10-28 08:44:27,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __list_addErr6REQUIRES_VIOLATION [2021-10-28 08:44:27,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr0REQUIRES_VIOLATION [2021-10-28 08:44:27,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr1REQUIRES_VIOLATION [2021-10-28 08:44:27,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr2REQUIRES_VIOLATION [2021-10-28 08:44:27,442 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location create_sub_listErr3REQUIRES_VIOLATION [2021-10-28 08:44:27,443 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 08:44:27,443 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr0REQUIRES_VIOLATION [2021-10-28 08:44:27,443 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr1REQUIRES_VIOLATION [2021-10-28 08:44:27,443 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr2REQUIRES_VIOLATION [2021-10-28 08:44:27,443 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr3REQUIRES_VIOLATION [2021-10-28 08:44:27,443 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:44:27,444 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:44:27,444 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location destroy_subErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:44:27,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:27,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:27,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:28,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:44:28,053 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:44:28,055 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:44:28,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:44:28 BoogieIcfgContainer [2021-10-28 08:44:28,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:44:28,066 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:44:28,066 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:44:28,066 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:44:28,067 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:39:49" (3/4) ... [2021-10-28 08:44:28,070 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 08:44:28,070 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:44:28,071 INFO L168 Benchmark]: Toolchain (without parser) took 280069.41 ms. Allocated memory was 73.4 MB in the beginning and 457.2 MB in the end (delta: 383.8 MB). Free memory was 53.6 MB in the beginning and 377.6 MB in the end (delta: -324.0 MB). Peak memory consumption was 60.8 MB. Max. memory is 16.1 GB. [2021-10-28 08:44:28,072 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 73.4 MB. Free memory was 54.6 MB in the beginning and 54.6 MB in the end (delta: 54.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:44:28,072 INFO L168 Benchmark]: CACSL2BoogieTranslator took 741.50 ms. Allocated memory is still 73.4 MB. Free memory was 53.3 MB in the beginning and 43.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:44:28,072 INFO L168 Benchmark]: Boogie Preprocessor took 80.18 ms. Allocated memory is still 73.4 MB. Free memory was 43.5 MB in the beginning and 40.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:44:28,073 INFO L168 Benchmark]: RCFGBuilder took 963.30 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 40.1 MB in the beginning and 50.1 MB in the end (delta: -9.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2021-10-28 08:44:28,073 INFO L168 Benchmark]: TraceAbstraction took 278272.43 ms. Allocated memory was 88.1 MB in the beginning and 457.2 MB in the end (delta: 369.1 MB). Free memory was 49.3 MB in the beginning and 377.6 MB in the end (delta: -328.4 MB). Peak memory consumption was 265.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:44:28,074 INFO L168 Benchmark]: Witness Printer took 4.45 ms. Allocated memory is still 457.2 MB. Free memory is still 377.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:44:28,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 73.4 MB. Free memory was 54.6 MB in the beginning and 54.6 MB in the end (delta: 54.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 741.50 ms. Allocated memory is still 73.4 MB. Free memory was 53.3 MB in the beginning and 43.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.18 ms. Allocated memory is still 73.4 MB. Free memory was 43.5 MB in the beginning and 40.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 963.30 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 40.1 MB in the beginning and 50.1 MB in the end (delta: -9.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 278272.43 ms. Allocated memory was 88.1 MB in the beginning and 457.2 MB in the end (delta: 369.1 MB). Free memory was 49.3 MB in the beginning and 377.6 MB in the end (delta: -328.4 MB). Peak memory consumption was 265.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.45 ms. Allocated memory is still 457.2 MB. Free memory is still 377.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L602] struct list_head top = { &(top), &(top) }; [L603] CALL create_top(&top) [L597] CALL insert_top(top) [L587] struct top_list *top = malloc(sizeof(*top)); [L588] COND FALSE !(!top) [L590] CALL create_sub_list(&top->sub1) [L579] sub->prev = sub [L580] sub->next = sub [L582] CALL insert_sub(sub) [L571] struct sub_list *sub = malloc(sizeof(*sub)); [L572] COND FALSE !(!sub) [L574] sub->number = 0 [L575] CALL list_add_tail(&sub->link, head) [L538] EXPR head->prev [L538] CALL __list_add(new, head->prev, head) [L531] next->prev = new [L532] new->next = next [L533] new->prev = prev [L534] prev->next = new - UnprovableResult [Line: 574]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 574]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 579]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 600]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 130 locations, 31 error locations. Started 1 CEGAR loops. OverallTime: 278.2s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 36.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1168 SDtfs, 339 SDslu, 4795 SDs, 0 SdLazy, 2624 SolverSat, 78 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 12.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 531 GetRequests, 385 SyntacticMatches, 21 SemanticMatches, 125 ConstructedPredicates, 5 IntricatePredicates, 3 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 34.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=12, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 25 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 84.5s InterpolantComputationTime, 282 NumberOfCodeBlocks, 282 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 511 ConstructedInterpolants, 31 QuantifiedInterpolants, 3198 SizeOfPredicates, 81 NumberOfNonLiveVariables, 2148 ConjunctsInSsa, 168 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 08:44:28,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2997dd49-1a96-411d-94c3-7954344a56e1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...