./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU --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 143a30a80a62e6cad7506820b1f96be933051e37975b620c656decb608437802 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:54:33,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:54:33,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:54:33,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:54:33,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:54:33,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:54:33,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:54:33,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:54:33,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:54:33,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:54:33,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:54:33,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:54:33,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:54:33,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:54:33,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:54:33,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:54:33,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:54:33,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:54:33,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:54:33,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:54:33,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:54:33,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:54:33,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:54:33,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:54:33,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:54:33,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:54:33,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:54:33,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:54:33,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:54:33,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:54:33,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:54:33,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:54:33,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:54:33,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:54:33,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:54:33,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:54:33,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:54:33,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:54:33,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:54:33,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:54:33,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:54:33,400 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-02 22:54:33,463 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:54:33,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:54:33,464 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:54:33,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:54:33,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:54:33,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:54:33,475 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:54:33,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:54:33,476 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:54:33,476 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:54:33,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:54:33,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:54:33,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:54:33,479 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:54:33,479 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:54:33,479 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:54:33,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:54:33,480 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:54:33,481 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:54:33,481 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:54:33,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:54:33,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:54:33,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:54:33,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:54:33,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:54:33,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:54:33,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:54:33,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:54:33,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:54:33,484 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_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 143a30a80a62e6cad7506820b1f96be933051e37975b620c656decb608437802 [2021-11-02 22:54:33,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:54:33,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:54:33,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:54:33,930 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:54:33,931 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:54:33,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2021-11-02 22:54:34,032 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/data/eb9c7a903/df372d0a11254b529fd476927b4d9e70/FLAG1bc90e05b [2021-11-02 22:54:34,780 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:54:34,780 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2021-11-02 22:54:34,819 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/data/eb9c7a903/df372d0a11254b529fd476927b4d9e70/FLAG1bc90e05b [2021-11-02 22:54:35,056 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/data/eb9c7a903/df372d0a11254b529fd476927b4d9e70 [2021-11-02 22:54:35,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:54:35,063 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:54:35,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:54:35,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:54:35,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:54:35,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:54:35" (1/1) ... [2021-11-02 22:54:35,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@423e46e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:35, skipping insertion in model container [2021-11-02 22:54:35,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:54:35" (1/1) ... [2021-11-02 22:54:35,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:54:35,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:54:35,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:54:35,824 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-02 22:54:35,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@13c30352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:35, skipping insertion in model container [2021-11-02 22:54:35,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:54:35,825 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-02 22:54:35,828 INFO L168 Benchmark]: Toolchain (without parser) took 763.38 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 48.1 MB in the beginning and 91.6 MB in the end (delta: -43.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:54:35,829 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 86.0 MB. Free memory was 65.9 MB in the beginning and 65.9 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:54:35,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 758.30 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 47.9 MB in the beginning and 91.6 MB in the end (delta: -43.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:54:35,832 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 86.0 MB. Free memory was 65.9 MB in the beginning and 65.9 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 758.30 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 47.9 MB in the beginning and 91.6 MB in the end (delta: -43.7 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: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU --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 143a30a80a62e6cad7506820b1f96be933051e37975b620c656decb608437802 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:54:38,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:54:38,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:54:38,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:54:38,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:54:38,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:54:38,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:54:38,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:54:38,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:54:38,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:54:38,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:54:38,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:54:38,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:54:38,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:54:38,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:54:38,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:54:38,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:54:38,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:54:38,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:54:38,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:54:38,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:54:38,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:54:38,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:54:38,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:54:38,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:54:38,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:54:38,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:54:38,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:54:38,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:54:38,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:54:38,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:54:38,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:54:38,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:54:38,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:54:38,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:54:38,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:54:38,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:54:38,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:54:38,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:54:38,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:54:38,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:54:38,920 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-02 22:54:38,979 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:54:38,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:54:38,980 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:54:38,981 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:54:38,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:54:38,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:54:38,984 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:54:38,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:54:38,985 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:54:38,985 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:54:38,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:54:38,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:54:38,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:54:38,987 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:54:38,988 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:54:38,988 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:54:38,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:54:38,989 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:54:38,989 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-02 22:54:38,989 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-02 22:54:38,990 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:54:38,990 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:54:38,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:54:38,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:54:38,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:54:38,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:54:38,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:54:38,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:54:38,992 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-02 22:54:38,992 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-02 22:54:38,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:54:38,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-02 22:54:38,993 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_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 143a30a80a62e6cad7506820b1f96be933051e37975b620c656decb608437802 [2021-11-02 22:54:39,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:54:39,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:54:39,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:54:39,600 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:54:39,601 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:54:39,603 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2021-11-02 22:54:39,698 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/data/f4cdfe6f0/4cf567cd30a442d6a2ae18798837b544/FLAG8ca83ce41 [2021-11-02 22:54:40,523 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:54:40,524 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2021-11-02 22:54:40,552 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/data/f4cdfe6f0/4cf567cd30a442d6a2ae18798837b544/FLAG8ca83ce41 [2021-11-02 22:54:40,739 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/data/f4cdfe6f0/4cf567cd30a442d6a2ae18798837b544 [2021-11-02 22:54:40,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:54:40,748 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:54:40,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:54:40,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:54:40,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:54:40,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:54:40" (1/1) ... [2021-11-02 22:54:40,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1befbdb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:40, skipping insertion in model container [2021-11-02 22:54:40,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:54:40" (1/1) ... [2021-11-02 22:54:40,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:54:40,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:54:41,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:54:41,512 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-02 22:54:41,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:54:41,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:54:41,651 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:54:41,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:54:41,812 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:54:41,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:41 WrapperNode [2021-11-02 22:54:41,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:54:41,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:54:41,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:54:41,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:54:41,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:41" (1/1) ... [2021-11-02 22:54:41,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:41" (1/1) ... [2021-11-02 22:54:41,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:41" (1/1) ... [2021-11-02 22:54:41,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:41" (1/1) ... [2021-11-02 22:54:41,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:41" (1/1) ... [2021-11-02 22:54:41,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:41" (1/1) ... [2021-11-02 22:54:41,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:41" (1/1) ... [2021-11-02 22:54:41,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:54:41,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:54:41,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:54:41,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:54:41,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:41" (1/1) ... [2021-11-02 22:54:41,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:54:41,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:42,008 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:54:42,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:54:42,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-02 22:54:42,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:54:42,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 22:54:42,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:54:42,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-02 22:54:42,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-02 22:54:42,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-02 22:54:42,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-02 22:54:42,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-02 22:54:42,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-11-02 22:54:42,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-11-02 22:54:42,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-02 22:54:42,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-02 22:54:42,084 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-11-02 22:54:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-11-02 22:54:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-11-02 22:54:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-11-02 22:54:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-11-02 22:54:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-11-02 22:54:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-11-02 22:54:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-11-02 22:54:42,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-11-02 22:54:42,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-11-02 22:54:42,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-11-02 22:54:42,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-02 22:54:42,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-02 22:54:42,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-11-02 22:54:42,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-11-02 22:54:42,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-11-02 22:54:42,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-11-02 22:54:42,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-11-02 22:54:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-11-02 22:54:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-11-02 22:54:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-11-02 22:54:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-11-02 22:54:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-11-02 22:54:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-11-02 22:54:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-11-02 22:54:42,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-11-02 22:54:42,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-11-02 22:54:42,095 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-11-02 22:54:42,095 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-11-02 22:54:42,096 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_unsafe_17 [2021-11-02 22:54:42,096 INFO L138 BoogieDeclarations]: Found implementation of procedure free_17 [2021-11-02 22:54:42,096 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-11-02 22:54:42,097 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-02 22:54:42,097 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-02 22:54:42,098 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-02 22:54:42,098 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-02 22:54:42,098 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-02 22:54:42,099 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-02 22:54:42,099 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-02 22:54:42,099 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-02 22:54:42,099 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-02 22:54:42,099 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-02 22:54:42,099 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-02 22:54:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-02 22:54:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-02 22:54:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-02 22:54:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-02 22:54:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-02 22:54:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-02 22:54:42,102 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-02 22:54:42,103 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-02 22:54:42,103 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-02 22:54:42,104 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-02 22:54:42,104 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-02 22:54:42,104 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-02 22:54:42,104 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-02 22:54:42,104 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-02 22:54:42,104 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-02 22:54:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-02 22:54:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-02 22:54:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-02 22:54:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-02 22:54:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-02 22:54:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-02 22:54:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-02 22:54:42,106 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-02 22:54:42,107 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-02 22:54:42,107 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-02 22:54:42,107 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-02 22:54:42,107 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-02 22:54:42,107 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-02 22:54:42,108 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-02 22:54:42,108 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-02 22:54:42,108 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-02 22:54:42,108 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-02 22:54:42,108 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-02 22:54:42,108 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-02 22:54:42,108 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-02 22:54:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-02 22:54:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-02 22:54:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-02 22:54:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-02 22:54:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-02 22:54:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-02 22:54:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-02 22:54:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-02 22:54:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-02 22:54:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-02 22:54:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-02 22:54:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-02 22:54:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-02 22:54:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-02 22:54:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-02 22:54:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-02 22:54:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-02 22:54:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-02 22:54:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-02 22:54:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-02 22:54:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-02 22:54:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-02 22:54:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-02 22:54:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-02 22:54:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-02 22:54:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-02 22:54:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-02 22:54:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-02 22:54:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-02 22:54:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-02 22:54:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-02 22:54:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-02 22:54:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-02 22:54:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-02 22:54:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-02 22:54:42,120 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-02 22:54:42,121 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-02 22:54:42,121 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-02 22:54:42,122 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-02 22:54:42,122 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-02 22:54:42,123 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-02 22:54:42,123 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-02 22:54:42,128 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-02 22:54:42,128 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-02 22:54:42,128 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-02 22:54:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-02 22:54:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-02 22:54:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-02 22:54:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-02 22:54:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-02 22:54:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-02 22:54:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-02 22:54:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-02 22:54:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-02 22:54:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-02 22:54:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-02 22:54:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-02 22:54:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-02 22:54:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-02 22:54:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-02 22:54:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-02 22:54:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-02 22:54:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-02 22:54:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-02 22:54:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-02 22:54:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-02 22:54:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-02 22:54:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-11-02 22:54:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-11-02 22:54:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-02 22:54:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-02 22:54:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-02 22:54:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:54:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-02 22:54:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-02 22:54:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-11-02 22:54:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:54:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-11-02 22:54:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-11-02 22:54:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-11-02 22:54:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:54:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-11-02 22:54:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-11-02 22:54:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-11-02 22:54:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-11-02 22:54:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-02 22:54:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-11-02 22:54:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:54:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-11-02 22:54:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-11-02 22:54:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-02 22:54:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-02 22:54:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-11-02 22:54:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-02 22:54:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-02 22:54:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-11-02 22:54:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-11-02 22:54:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 22:54:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-11-02 22:54:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-11-02 22:54:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-11-02 22:54:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-11-02 22:54:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-11-02 22:54:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-11-02 22:54:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-11-02 22:54:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-11-02 22:54:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-11-02 22:54:42,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-11-02 22:54:42,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-11-02 22:54:42,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-02 22:54:42,137 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-11-02 22:54:42,137 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-11-02 22:54:42,137 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_unsafe_17 [2021-11-02 22:54:42,137 INFO L130 BoogieDeclarations]: Found specification of procedure free_17 [2021-11-02 22:54:42,137 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-11-02 22:54:42,138 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-02 22:54:42,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-02 22:54:42,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:54:42,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 22:54:42,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:54:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:54:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 22:54:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 22:54:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-02 22:54:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-02 22:54:42,786 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 22:54:43,140 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 22:54:43,531 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:54:43,531 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-02 22:54:43,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:54:43 BoogieIcfgContainer [2021-11-02 22:54:43,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:54:43,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:54:43,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:54:43,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:54:43,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:54:40" (1/3) ... [2021-11-02 22:54:43,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14523dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:54:43, skipping insertion in model container [2021-11-02 22:54:43,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:41" (2/3) ... [2021-11-02 22:54:43,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14523dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:54:43, skipping insertion in model container [2021-11-02 22:54:43,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:54:43" (3/3) ... [2021-11-02 22:54:43,543 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test17_2-1.i [2021-11-02 22:54:43,548 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:54:43,548 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 88 error locations. [2021-11-02 22:54:43,594 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:54:43,600 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:54:43,600 INFO L340 AbstractCegarLoop]: Starting to check reachability of 88 error locations. [2021-11-02 22:54:43,617 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 81 states have (on average 1.6296296296296295) internal successors, (132), 116 states have internal predecessors, (132), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-02 22:54:43,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-02 22:54:43,647 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:43,648 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:43,648 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-11-02 22:54:43,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:43,656 INFO L85 PathProgramCache]: Analyzing trace with hash -82149530, now seen corresponding path program 1 times [2021-11-02 22:54:43,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:54:43,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519697673] [2021-11-02 22:54:43,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:43,670 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:54:43,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:54:43,673 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:54:43,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-02 22:54:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:43,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:54:43,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:43,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:54:44,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:44,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:54:44,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:44,145 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:54:44,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519697673] [2021-11-02 22:54:44,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519697673] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:44,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:44,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:54:44,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051848066] [2021-11-02 22:54:44,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:54:44,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:54:44,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:54:44,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:54:44,171 INFO L87 Difference]: Start difference. First operand has 143 states, 81 states have (on average 1.6296296296296295) internal successors, (132), 116 states have internal predecessors, (132), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-02 22:54:44,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:44,370 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2021-11-02 22:54:44,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:54:44,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-11-02 22:54:44,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:44,382 INFO L225 Difference]: With dead ends: 83 [2021-11-02 22:54:44,382 INFO L226 Difference]: Without dead ends: 80 [2021-11-02 22:54:44,384 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:54:44,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-02 22:54:44,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2021-11-02 22:54:44,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 45 states have (on average 1.6) internal successors, (72), 62 states have internal predecessors, (72), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-02 22:54:44,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2021-11-02 22:54:44,426 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 16 [2021-11-02 22:54:44,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:44,426 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2021-11-02 22:54:44,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-02 22:54:44,427 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2021-11-02 22:54:44,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-02 22:54:44,428 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:44,428 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:44,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:44,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:54:44,640 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-11-02 22:54:44,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:44,641 INFO L85 PathProgramCache]: Analyzing trace with hash -82149529, now seen corresponding path program 1 times [2021-11-02 22:54:44,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:54:44,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462670811] [2021-11-02 22:54:44,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:44,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:54:44,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:54:44,644 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:54:44,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-02 22:54:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:44,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 22:54:44,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:44,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:54:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:45,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:54:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:45,942 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:54:45,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462670811] [2021-11-02 22:54:45,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462670811] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:45,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:45,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-02 22:54:45,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83202802] [2021-11-02 22:54:45,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 22:54:45,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:54:45,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 22:54:45,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-02 22:54:45,961 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-02 22:54:47,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:47,098 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2021-11-02 22:54:47,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:54:47,099 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 16 [2021-11-02 22:54:47,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:47,101 INFO L225 Difference]: With dead ends: 89 [2021-11-02 22:54:47,101 INFO L226 Difference]: Without dead ends: 89 [2021-11-02 22:54:47,102 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-11-02 22:54:47,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-02 22:54:47,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2021-11-02 22:54:47,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 50 states have (on average 1.56) internal successors, (78), 67 states have internal predecessors, (78), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-02 22:54:47,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2021-11-02 22:54:47,113 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 16 [2021-11-02 22:54:47,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:47,114 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2021-11-02 22:54:47,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-02 22:54:47,114 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2021-11-02 22:54:47,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-02 22:54:47,115 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:47,115 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:47,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:47,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:54:47,327 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-11-02 22:54:47,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:47,328 INFO L85 PathProgramCache]: Analyzing trace with hash 805354151, now seen corresponding path program 1 times [2021-11-02 22:54:47,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:54:47,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465429523] [2021-11-02 22:54:47,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:47,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:54:47,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:54:47,330 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:54:47,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-02 22:54:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:47,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:54:47,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:47,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:54:47,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:47,737 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:54:47,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465429523] [2021-11-02 22:54:47,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465429523] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:47,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:47,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-02 22:54:47,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776225653] [2021-11-02 22:54:47,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:54:47,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:54:47,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:54:47,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:54:47,740 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-02 22:54:47,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:47,800 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2021-11-02 22:54:47,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:54:47,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-11-02 22:54:47,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:47,803 INFO L225 Difference]: With dead ends: 80 [2021-11-02 22:54:47,803 INFO L226 Difference]: Without dead ends: 80 [2021-11-02 22:54:47,803 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:54:47,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-02 22:54:47,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2021-11-02 22:54:47,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 48 states have (on average 1.5) internal successors, (72), 64 states have internal predecessors, (72), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-02 22:54:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2021-11-02 22:54:47,812 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 16 [2021-11-02 22:54:47,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:47,812 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2021-11-02 22:54:47,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-02 22:54:47,813 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2021-11-02 22:54:47,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 22:54:47,813 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:47,813 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:47,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:48,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:54:48,022 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-11-02 22:54:48,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:48,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1748321483, now seen corresponding path program 1 times [2021-11-02 22:54:48,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:54:48,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550425261] [2021-11-02 22:54:48,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:48,023 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:54:48,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:54:48,025 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:54:48,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-02 22:54:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:48,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:54:48,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:48,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:48,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:54:48,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:48,378 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:54:48,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550425261] [2021-11-02 22:54:48,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550425261] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:48,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:48,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-02 22:54:48,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244465072] [2021-11-02 22:54:48,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:54:48,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:54:48,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:54:48,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:54:48,380 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:54:48,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:48,437 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2021-11-02 22:54:48,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:54:48,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2021-11-02 22:54:48,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:48,439 INFO L225 Difference]: With dead ends: 80 [2021-11-02 22:54:48,439 INFO L226 Difference]: Without dead ends: 80 [2021-11-02 22:54:48,439 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:54:48,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-02 22:54:48,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2021-11-02 22:54:48,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 64 states have internal predecessors, (71), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-02 22:54:48,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2021-11-02 22:54:48,447 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 17 [2021-11-02 22:54:48,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:48,448 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2021-11-02 22:54:48,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:54:48,448 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2021-11-02 22:54:48,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 22:54:48,449 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:48,449 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:48,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:48,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:54:48,661 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-11-02 22:54:48,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:48,661 INFO L85 PathProgramCache]: Analyzing trace with hash -803835478, now seen corresponding path program 1 times [2021-11-02 22:54:48,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:54:48,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671593931] [2021-11-02 22:54:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:48,662 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:54:48,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:54:48,663 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:54:48,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-02 22:54:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:48,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:54:48,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:48,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:48,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:54:49,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:49,026 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:54:49,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671593931] [2021-11-02 22:54:49,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671593931] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:49,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:49,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 22:54:49,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135919253] [2021-11-02 22:54:49,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:54:49,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:54:49,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:54:49,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:49,028 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-02 22:54:49,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:49,158 INFO L93 Difference]: Finished difference Result 115 states and 128 transitions. [2021-11-02 22:54:49,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:54:49,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2021-11-02 22:54:49,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:49,164 INFO L225 Difference]: With dead ends: 115 [2021-11-02 22:54:49,164 INFO L226 Difference]: Without dead ends: 110 [2021-11-02 22:54:49,165 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:49,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-02 22:54:49,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 76. [2021-11-02 22:54:49,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 46 states have (on average 1.5) internal successors, (69), 63 states have internal predecessors, (69), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-02 22:54:49,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2021-11-02 22:54:49,172 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 17 [2021-11-02 22:54:49,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:49,172 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2021-11-02 22:54:49,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-02 22:54:49,173 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2021-11-02 22:54:49,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-02 22:54:49,174 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:49,174 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:49,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-02 22:54:49,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:54:49,382 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-11-02 22:54:49,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:49,383 INFO L85 PathProgramCache]: Analyzing trace with hash -402903225, now seen corresponding path program 1 times [2021-11-02 22:54:49,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:54:49,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137502239] [2021-11-02 22:54:49,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:49,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:54:49,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:54:49,385 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:54:49,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-02 22:54:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:49,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 22:54:49,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:49,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:54:49,923 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:49,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:54:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:51,562 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:54:51,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137502239] [2021-11-02 22:54:51,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137502239] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:54:51,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:51,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-11-02 22:54:51,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657875299] [2021-11-02 22:54:51,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:54:51,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:54:51,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:54:51,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:54:51,565 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand has 18 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-02 22:54:53,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:53,682 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2021-11-02 22:54:53,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 22:54:53,683 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 22 [2021-11-02 22:54:53,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:53,684 INFO L225 Difference]: With dead ends: 93 [2021-11-02 22:54:53,684 INFO L226 Difference]: Without dead ends: 93 [2021-11-02 22:54:53,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2021-11-02 22:54:53,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-02 22:54:53,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2021-11-02 22:54:53,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 75 states have internal predecessors, (83), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-02 22:54:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2021-11-02 22:54:53,693 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 22 [2021-11-02 22:54:53,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:53,693 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2021-11-02 22:54:53,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-02 22:54:53,693 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2021-11-02 22:54:53,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-02 22:54:53,695 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:53,695 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:53,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:53,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:54:53,903 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting alloc_unsafe_17Err2REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-11-02 22:54:53,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:53,903 INFO L85 PathProgramCache]: Analyzing trace with hash 31803261, now seen corresponding path program 1 times [2021-11-02 22:54:53,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:54:53,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469816303] [2021-11-02 22:54:53,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:53,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:54:53,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:54:53,905 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:54:53,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-02 22:54:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:54,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:54:54,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:54,274 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:54,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:54:54,529 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:54,529 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:54:54,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469816303] [2021-11-02 22:54:54,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469816303] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:54:54,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:54,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-02 22:54:54,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389752931] [2021-11-02 22:54:54,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 22:54:54,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:54:54,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 22:54:54,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:54:54,531 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-02 22:54:54,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:54,817 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2021-11-02 22:54:54,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 22:54:54,818 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2021-11-02 22:54:54,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:54,819 INFO L225 Difference]: With dead ends: 94 [2021-11-02 22:54:54,819 INFO L226 Difference]: Without dead ends: 94 [2021-11-02 22:54:54,820 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2021-11-02 22:54:54,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-02 22:54:54,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2021-11-02 22:54:54,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 80 states have internal predecessors, (86), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-02 22:54:54,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2021-11-02 22:54:54,830 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 30 [2021-11-02 22:54:54,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:54,831 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2021-11-02 22:54:54,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-02 22:54:54,831 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2021-11-02 22:54:54,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-02 22:54:54,832 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:54,833 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:54,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:55,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:54:55,047 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-11-02 22:54:55,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:55,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2072729351, now seen corresponding path program 2 times [2021-11-02 22:54:55,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:54:55,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968978729] [2021-11-02 22:54:55,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:54:55,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:54:55,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:54:55,049 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:54:55,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-02 22:54:55,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:54:55,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:54:55,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-02 22:54:55,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:55,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:54:56,091 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:56,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:54:59,772 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:59,772 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:54:59,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968978729] [2021-11-02 22:54:59,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968978729] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:54:59,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:59,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-11-02 22:54:59,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691461187] [2021-11-02 22:54:59,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 22:54:59,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:54:59,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 22:54:59,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:54:59,776 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand has 28 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-02 22:55:06,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:55:06,353 INFO L93 Difference]: Finished difference Result 114 states and 127 transitions. [2021-11-02 22:55:06,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-02 22:55:06,355 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2021-11-02 22:55:06,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:55:06,357 INFO L225 Difference]: With dead ends: 114 [2021-11-02 22:55:06,357 INFO L226 Difference]: Without dead ends: 114 [2021-11-02 22:55:06,359 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=487, Invalid=1493, Unknown=0, NotChecked=0, Total=1980 [2021-11-02 22:55:06,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-02 22:55:06,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2021-11-02 22:55:06,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 82 states have (on average 1.3414634146341464) internal successors, (110), 99 states have internal predecessors, (110), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-02 22:55:06,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2021-11-02 22:55:06,367 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 34 [2021-11-02 22:55:06,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:55:06,368 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2021-11-02 22:55:06,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-02 22:55:06,369 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2021-11-02 22:55:06,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-02 22:55:06,370 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:55:06,371 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:06,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:55:06,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:55:06,591 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting alloc_unsafe_17Err2REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-11-02 22:55:06,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:06,592 INFO L85 PathProgramCache]: Analyzing trace with hash 2071044978, now seen corresponding path program 2 times [2021-11-02 22:55:06,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:55:06,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342550712] [2021-11-02 22:55:06,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:55:06,592 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:55:06,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:55:06,594 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:55:06,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-02 22:55:06,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 22:55:06,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:55:06,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:55:06,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:55:07,025 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-02 22:55:07,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:55:07,192 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-02 22:55:07,193 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:55:07,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342550712] [2021-11-02 22:55:07,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342550712] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:07,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:07,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-02 22:55:07,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2380355] [2021-11-02 22:55:07,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:55:07,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:55:07,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:55:07,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:55:07,195 INFO L87 Difference]: Start difference. First operand 112 states and 124 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-02 22:55:07,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:55:07,306 INFO L93 Difference]: Finished difference Result 151 states and 168 transitions. [2021-11-02 22:55:07,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:55:07,307 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2021-11-02 22:55:07,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:55:07,308 INFO L225 Difference]: With dead ends: 151 [2021-11-02 22:55:07,308 INFO L226 Difference]: Without dead ends: 151 [2021-11-02 22:55:07,309 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:55:07,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-02 22:55:07,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 119. [2021-11-02 22:55:07,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 88 states have (on average 1.3522727272727273) internal successors, (119), 105 states have internal predecessors, (119), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-02 22:55:07,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 136 transitions. [2021-11-02 22:55:07,317 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 136 transitions. Word has length 45 [2021-11-02 22:55:07,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:55:07,318 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 136 transitions. [2021-11-02 22:55:07,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-02 22:55:07,318 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 136 transitions. [2021-11-02 22:55:07,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-02 22:55:07,320 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:55:07,320 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:07,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:55:07,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:55:07,533 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting alloc_unsafe_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-11-02 22:55:07,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:07,533 INFO L85 PathProgramCache]: Analyzing trace with hash -2123452938, now seen corresponding path program 1 times [2021-11-02 22:55:07,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:55:07,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728258290] [2021-11-02 22:55:07,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:07,535 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:55:07,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:55:07,538 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:55:07,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-02 22:55:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:07,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 22:55:07,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:55:08,322 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 4 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:08,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:55:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 22:55:09,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:55:09,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728258290] [2021-11-02 22:55:09,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728258290] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:55:09,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:55:09,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-11-02 22:55:09,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281023455] [2021-11-02 22:55:09,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-02 22:55:09,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:55:09,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-02 22:55:09,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-11-02 22:55:09,055 INFO L87 Difference]: Start difference. First operand 119 states and 136 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-02 22:55:09,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:55:09,466 INFO L93 Difference]: Finished difference Result 119 states and 134 transitions. [2021-11-02 22:55:09,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 22:55:09,472 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 50 [2021-11-02 22:55:09,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:55:09,474 INFO L225 Difference]: With dead ends: 119 [2021-11-02 22:55:09,475 INFO L226 Difference]: Without dead ends: 119 [2021-11-02 22:55:09,475 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2021-11-02 22:55:09,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-02 22:55:09,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-11-02 22:55:09,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 88 states have (on average 1.3295454545454546) internal successors, (117), 105 states have internal predecessors, (117), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-02 22:55:09,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2021-11-02 22:55:09,486 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 50 [2021-11-02 22:55:09,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:55:09,487 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2021-11-02 22:55:09,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-02 22:55:09,487 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2021-11-02 22:55:09,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 22:55:09,497 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:55:09,498 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:09,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:55:09,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:55:09,712 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting alloc_unsafe_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-11-02 22:55:09,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:09,713 INFO L85 PathProgramCache]: Analyzing trace with hash 516711894, now seen corresponding path program 2 times [2021-11-02 22:55:09,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:55:09,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270458278] [2021-11-02 22:55:09,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:55:09,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:55:09,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:55:09,715 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:55:09,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-02 22:55:10,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:55:10,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:55:10,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 22:55:10,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:55:10,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:55:10,596 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-02 22:55:10,597 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 21 treesize of output 26 [2021-11-02 22:55:10,645 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-02 22:55:10,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:55:11,074 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-02 22:55:11,074 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:55:11,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270458278] [2021-11-02 22:55:11,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270458278] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:55:11,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:55:11,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-11-02 22:55:11,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437835510] [2021-11-02 22:55:11,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:55:11,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:55:11,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:55:11,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:55:11,077 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-02 22:55:11,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:55:11,885 INFO L93 Difference]: Finished difference Result 212 states and 244 transitions. [2021-11-02 22:55:11,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 22:55:11,885 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2021-11-02 22:55:11,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:55:11,888 INFO L225 Difference]: With dead ends: 212 [2021-11-02 22:55:11,888 INFO L226 Difference]: Without dead ends: 210 [2021-11-02 22:55:11,889 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-11-02 22:55:11,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-02 22:55:11,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 137. [2021-11-02 22:55:11,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 103 states have (on average 1.3203883495145632) internal successors, (136), 119 states have internal predecessors, (136), 9 states have call successors, (9), 8 states have call predecessors, (9), 9 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2021-11-02 22:55:11,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 158 transitions. [2021-11-02 22:55:11,898 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 158 transitions. Word has length 56 [2021-11-02 22:55:11,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:55:11,898 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 158 transitions. [2021-11-02 22:55:11,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-02 22:55:11,899 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 158 transitions. [2021-11-02 22:55:11,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 22:55:11,900 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:55:11,900 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:11,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-02 22:55:12,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:55:12,113 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting alloc_unsafe_17Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-11-02 22:55:12,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:12,114 INFO L85 PathProgramCache]: Analyzing trace with hash 516711895, now seen corresponding path program 1 times [2021-11-02 22:55:12,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:55:12,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641802223] [2021-11-02 22:55:12,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:12,114 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:55:12,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:55:12,116 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:55:12,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-02 22:55:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:12,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-02 22:55:12,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:55:12,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:55:12,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:55:15,499 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-02 22:55:15,499 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 33 treesize of output 35 [2021-11-02 22:55:15,516 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-02 22:55:15,517 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 27 [2021-11-02 22:55:15,633 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-02 22:55:15,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:55:37,846 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 34 treesize of output 32 [2021-11-02 22:55:38,600 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 31 treesize of output 29 [2021-11-02 22:55:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-02 22:55:38,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:55:38,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641802223] [2021-11-02 22:55:38,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641802223] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:55:38,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:55:38,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-11-02 22:55:38,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404373093] [2021-11-02 22:55:38,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-02 22:55:38,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:55:38,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-02 22:55:38,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=404, Unknown=5, NotChecked=0, Total=462 [2021-11-02 22:55:38,754 INFO L87 Difference]: Start difference. First operand 137 states and 158 transitions. Second operand has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-02 22:59:38,467 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (bvmul c_alloc_unsafe_17_~i~0 (_ bv4 32)))) (let ((.cse1 (bvadd (_ bv4 32) .cse0 c_alloc_unsafe_17_~array.offset))) (and (exists ((ldv_malloc_~size (_ BitVec 32)) (|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| ldv_malloc_~size) |c_#length|) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |ldv_malloc_#res.base|)))))))) (bvule (bvadd .cse0 c_alloc_unsafe_17_~array.offset) .cse1) (forall ((v_alloc_unsafe_17_~array.base_BEFORE_CALL_4 (_ BitVec 32)) (v_alloc_unsafe_17_~i~0_BEFORE_CALL_2 (_ BitVec 32)) (|v_ldv_malloc_#res.base_61| (_ BitVec 32)) (v_alloc_unsafe_17_~array.offset_BEFORE_CALL_2 (_ BitVec 32))) (or (and (let ((.cse2 (bvmul v_alloc_unsafe_17_~i~0_BEFORE_CALL_2 (_ bv4 32)))) (bvule (bvadd .cse2 v_alloc_unsafe_17_~array.offset_BEFORE_CALL_2) (bvadd .cse2 (_ bv4 32) v_alloc_unsafe_17_~array.offset_BEFORE_CALL_2))) (forall ((ldv_malloc_~size (_ BitVec 32))) (bvule (bvadd (bvmul v_alloc_unsafe_17_~i~0_BEFORE_CALL_2 (_ bv4 32)) (_ bv4 32) v_alloc_unsafe_17_~array.offset_BEFORE_CALL_2) (select (store |c_#length| |v_ldv_malloc_#res.base_61| ldv_malloc_~size) v_alloc_unsafe_17_~array.base_BEFORE_CALL_4)))) (exists ((|v_ldv_malloc_#res.base_60| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ldv_malloc_#res.base_60|))))))) (or (exists ((v_ldv_malloc_~size_55 (_ BitVec 32))) (not (bvule (bvadd (bvmul v_alloc_unsafe_17_~i~0_BEFORE_CALL_2 (_ bv4 32)) (_ bv4 32) v_alloc_unsafe_17_~array.offset_BEFORE_CALL_2) (select (store |c_old(#length)| |v_ldv_malloc_#res.base_60| v_ldv_malloc_~size_55) v_alloc_unsafe_17_~array.base_BEFORE_CALL_4)))) (not (let ((.cse3 (bvmul v_alloc_unsafe_17_~i~0_BEFORE_CALL_2 (_ bv4 32)))) (bvule (bvadd .cse3 v_alloc_unsafe_17_~array.offset_BEFORE_CALL_2) (bvadd .cse3 (_ bv4 32) v_alloc_unsafe_17_~array.offset_BEFORE_CALL_2))))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_61|))))))) (bvule .cse1 (select |c_#length| c_alloc_unsafe_17_~array.base)) (forall ((|v_ldv_malloc_#res.base_60| (_ BitVec 32))) (or (and (bvule |c_alloc_unsafe_17_#in~array.offset| (bvadd (_ bv4 32) |c_alloc_unsafe_17_#in~array.offset|)) (forall ((v_ldv_malloc_~size_55 (_ BitVec 32))) (bvule (bvadd (_ bv4 32) |c_alloc_unsafe_17_#in~array.offset|) (select (store |c_#length| |v_ldv_malloc_#res.base_60| v_ldv_malloc_~size_55) |c_alloc_unsafe_17_#in~array.base|)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_60|))))))))))))) is different from false [2021-11-02 23:00:04,525 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (bvmul c_alloc_unsafe_17_~i~0 (_ bv4 32)))) (let ((.cse5 (bvadd (_ bv4 32) .cse4 c_alloc_unsafe_17_~array.offset))) (and (forall ((|v_ldv_malloc_#res.base_60| (_ BitVec 32))) (or (and (forall ((v_ldv_malloc_~size_55 (_ BitVec 32))) (bvule (bvadd (_ bv4 32) (bvmul c_alloc_unsafe_17_~i~0 (_ bv4 32)) c_alloc_unsafe_17_~array.offset) (select (store |c_#length| |v_ldv_malloc_#res.base_60| v_ldv_malloc_~size_55) c_alloc_unsafe_17_~array.base))) (let ((.cse0 (bvmul c_alloc_unsafe_17_~i~0 (_ bv4 32)))) (bvule (bvadd .cse0 c_alloc_unsafe_17_~array.offset) (bvadd (_ bv4 32) .cse0 c_alloc_unsafe_17_~array.offset)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_60|)))))))))) (= |c_alloc_unsafe_17_#in~array.offset| (_ bv0 32)) (= |c_old(#valid)| |c_#valid|) (forall ((v_alloc_unsafe_17_~array.base_BEFORE_CALL_4 (_ BitVec 32)) (v_alloc_unsafe_17_~i~0_BEFORE_CALL_2 (_ BitVec 32)) (v_alloc_unsafe_17_~array.offset_BEFORE_CALL_2 (_ BitVec 32))) (or (let ((.cse1 (bvmul v_alloc_unsafe_17_~i~0_BEFORE_CALL_2 (_ bv4 32)))) (let ((.cse2 (bvadd .cse1 (_ bv4 32) v_alloc_unsafe_17_~array.offset_BEFORE_CALL_2))) (and (bvule (bvadd .cse1 v_alloc_unsafe_17_~array.offset_BEFORE_CALL_2) .cse2) (bvule .cse2 (select |c_#length| v_alloc_unsafe_17_~array.base_BEFORE_CALL_4))))) (exists ((|v_ldv_malloc_#res.base_60| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ldv_malloc_#res.base_60|))))))) (or (exists ((v_ldv_malloc_~size_55 (_ BitVec 32))) (not (bvule (bvadd (bvmul v_alloc_unsafe_17_~i~0_BEFORE_CALL_2 (_ bv4 32)) (_ bv4 32) v_alloc_unsafe_17_~array.offset_BEFORE_CALL_2) (select (store |c_old(#length)| |v_ldv_malloc_#res.base_60| v_ldv_malloc_~size_55) v_alloc_unsafe_17_~array.base_BEFORE_CALL_4)))) (not (let ((.cse3 (bvmul v_alloc_unsafe_17_~i~0_BEFORE_CALL_2 (_ bv4 32)))) (bvule (bvadd .cse3 v_alloc_unsafe_17_~array.offset_BEFORE_CALL_2) (bvadd .cse3 (_ bv4 32) v_alloc_unsafe_17_~array.offset_BEFORE_CALL_2))))))))) (= |c_#length| |c_old(#length)|) (bvule (bvadd .cse4 c_alloc_unsafe_17_~array.offset) .cse5) (bvule .cse5 (select |c_#length| c_alloc_unsafe_17_~array.base)) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |c_alloc_unsafe_17_#in~array.base|))))) (_ bv1 1))) (= (select |c_#length| |c_alloc_unsafe_17_#in~array.base|) (_ bv40 32))))) is different from false [2021-11-02 23:02:14,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:02:14,575 INFO L93 Difference]: Finished difference Result 313 states and 366 transitions. [2021-11-02 23:02:14,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-02 23:02:14,577 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 56 [2021-11-02 23:02:14,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:02:14,580 INFO L225 Difference]: With dead ends: 313 [2021-11-02 23:02:14,580 INFO L226 Difference]: Without dead ends: 313 [2021-11-02 23:02:14,581 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 78.8s TimeCoverageRelationStatistics Valid=226, Invalid=1399, Unknown=23, NotChecked=158, Total=1806 [2021-11-02 23:02:14,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-02 23:02:14,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 170. [2021-11-02 23:02:14,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 130 states have (on average 1.323076923076923) internal successors, (172), 145 states have internal predecessors, (172), 14 states have call successors, (14), 8 states have call predecessors, (14), 10 states have return successors, (24), 16 states have call predecessors, (24), 13 states have call successors, (24) [2021-11-02 23:02:14,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 210 transitions. [2021-11-02 23:02:14,595 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 210 transitions. Word has length 56 [2021-11-02 23:02:14,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:02:14,596 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 210 transitions. [2021-11-02 23:02:14,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-02 23:02:14,596 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 210 transitions. [2021-11-02 23:02:14,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-02 23:02:14,598 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:14,598 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:02:14,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-02 23:02:14,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:02:14,799 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting alloc_unsafe_17Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-11-02 23:02:14,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:14,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1656117822, now seen corresponding path program 1 times [2021-11-02 23:02:14,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:02:14,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144080201] [2021-11-02 23:02:14,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:14,800 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:02:14,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:02:14,801 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:02:14,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-02 23:02:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:15,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 23:02:15,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:02:15,459 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-02 23:02:15,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:02:15,650 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-02 23:02:15,650 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:02:15,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144080201] [2021-11-02 23:02:15,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144080201] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:02:15,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:02:15,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-02 23:02:15,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139042710] [2021-11-02 23:02:15,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:02:15,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:02:15,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:02:15,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:02:15,652 INFO L87 Difference]: Start difference. First operand 170 states and 210 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 23:02:15,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:02:15,770 INFO L93 Difference]: Finished difference Result 215 states and 265 transitions. [2021-11-02 23:02:15,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 23:02:15,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 58 [2021-11-02 23:02:15,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:02:15,774 INFO L225 Difference]: With dead ends: 215 [2021-11-02 23:02:15,774 INFO L226 Difference]: Without dead ends: 215 [2021-11-02 23:02:15,774 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:02:15,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-02 23:02:15,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 176. [2021-11-02 23:02:15,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 136 states have (on average 1.3014705882352942) internal successors, (177), 148 states have internal predecessors, (177), 14 states have call successors, (14), 8 states have call predecessors, (14), 10 states have return successors, (24), 19 states have call predecessors, (24), 13 states have call successors, (24) [2021-11-02 23:02:15,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 215 transitions. [2021-11-02 23:02:15,795 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 215 transitions. Word has length 58 [2021-11-02 23:02:15,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:02:15,796 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 215 transitions. [2021-11-02 23:02:15,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 23:02:15,796 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 215 transitions. [2021-11-02 23:02:15,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-02 23:02:15,798 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:15,798 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:02:15,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-02 23:02:16,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:02:16,013 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting alloc_unsafe_17Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-11-02 23:02:16,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:16,014 INFO L85 PathProgramCache]: Analyzing trace with hash 86692513, now seen corresponding path program 1 times [2021-11-02 23:02:16,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:02:16,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314946613] [2021-11-02 23:02:16,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:16,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:02:16,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:02:16,016 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:02:16,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-02 23:02:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:16,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 23:02:16,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:02:16,658 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-11-02 23:02:16,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:02:16,815 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-11-02 23:02:16,815 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:02:16,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314946613] [2021-11-02 23:02:16,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314946613] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 23:02:16,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:02:16,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-02 23:02:16,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191338942] [2021-11-02 23:02:16,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:02:16,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:02:16,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:02:16,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:02:16,817 INFO L87 Difference]: Start difference. First operand 176 states and 215 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-02 23:02:16,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:02:16,929 INFO L93 Difference]: Finished difference Result 181 states and 220 transitions. [2021-11-02 23:02:16,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:02:16,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 58 [2021-11-02 23:02:16,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:02:16,932 INFO L225 Difference]: With dead ends: 181 [2021-11-02 23:02:16,932 INFO L226 Difference]: Without dead ends: 181 [2021-11-02 23:02:16,932 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:02:16,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-02 23:02:16,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 178. [2021-11-02 23:02:16,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 138 states have (on average 1.2971014492753623) internal successors, (179), 150 states have internal predecessors, (179), 14 states have call successors, (14), 8 states have call predecessors, (14), 10 states have return successors, (24), 19 states have call predecessors, (24), 13 states have call successors, (24) [2021-11-02 23:02:16,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 217 transitions. [2021-11-02 23:02:16,941 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 217 transitions. Word has length 58 [2021-11-02 23:02:16,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:02:16,942 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 217 transitions. [2021-11-02 23:02:16,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-02 23:02:16,942 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 217 transitions. [2021-11-02 23:02:16,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-02 23:02:16,943 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:16,943 INFO L513 BasicCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:02:16,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-02 23:02:17,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:02:17,159 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-11-02 23:02:17,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:17,160 INFO L85 PathProgramCache]: Analyzing trace with hash 526435975, now seen corresponding path program 3 times [2021-11-02 23:02:17,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:02:17,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000625104] [2021-11-02 23:02:17,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:02:17,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:02:17,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:02:17,165 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:02:17,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-02 23:02:17,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-11-02 23:02:17,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:02:17,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-02 23:02:17,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:02:17,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 23:02:19,881 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 41 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:02:19,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:02:33,623 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:02:33,623 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:02:33,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000625104] [2021-11-02 23:02:33,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000625104] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 23:02:33,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:02:33,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 42 [2021-11-02 23:02:33,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295212286] [2021-11-02 23:02:33,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-02 23:02:33,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 23:02:33,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-02 23:02:33,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1402, Unknown=0, NotChecked=0, Total=1722 [2021-11-02 23:02:33,627 INFO L87 Difference]: Start difference. First operand 178 states and 217 transitions. Second operand has 42 states, 40 states have (on average 2.55) internal successors, (102), 40 states have internal predecessors, (102), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-02 23:02:40,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:02:40,409 INFO L93 Difference]: Finished difference Result 164 states and 198 transitions. [2021-11-02 23:02:40,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 23:02:40,411 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 2.55) internal successors, (102), 40 states have internal predecessors, (102), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2021-11-02 23:02:40,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:02:40,413 INFO L225 Difference]: With dead ends: 164 [2021-11-02 23:02:40,413 INFO L226 Difference]: Without dead ends: 164 [2021-11-02 23:02:40,414 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=589, Invalid=2491, Unknown=0, NotChecked=0, Total=3080 [2021-11-02 23:02:40,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-02 23:02:40,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-11-02 23:02:40,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 125 states have (on average 1.28) internal successors, (160), 136 states have internal predecessors, (160), 14 states have call successors, (14), 8 states have call predecessors, (14), 10 states have return successors, (24), 19 states have call predecessors, (24), 13 states have call successors, (24) [2021-11-02 23:02:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 198 transitions. [2021-11-02 23:02:40,422 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 198 transitions. Word has length 58 [2021-11-02 23:02:40,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:02:40,423 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 198 transitions. [2021-11-02 23:02:40,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 40 states have (on average 2.55) internal successors, (102), 40 states have internal predecessors, (102), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-02 23:02:40,423 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 198 transitions. [2021-11-02 23:02:40,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 23:02:40,424 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:40,424 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 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, 1, 1, 1] [2021-11-02 23:02:40,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-02 23:02:40,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 23:02:40,638 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting free_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 84 more)] === [2021-11-02 23:02:40,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:40,638 INFO L85 PathProgramCache]: Analyzing trace with hash -160851315, now seen corresponding path program 1 times [2021-11-02 23:02:40,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 23:02:40,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506046737] [2021-11-02 23:02:40,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:40,639 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 23:02:40,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 23:02:40,640 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 23:02:40,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-02 23:02:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:41,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 23:02:41,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:02:41,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 23:02:41,747 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-02 23:02:41,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:02:42,083 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 23:02:42,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506046737] [2021-11-02 23:02:42,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [v_entry_point_~array~0.base_BEFORE_CALL_5] [2021-11-02 23:02:42,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [327926334] [2021-11-02 23:02:42,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:42,085 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-02 23:02:42,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/cvc4 [2021-11-02 23:02:42,086 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-02 23:02:42,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-02 23:02:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:42,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 23:02:42,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:02:42,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 23:02:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-02 23:02:43,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:02:43,592 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [v_entry_point_~array~0.base_BEFORE_CALL_5] [2021-11-02 23:02:43,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592062272] [2021-11-02 23:02:43,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:43,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:02:43,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:02:43,594 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:02:43,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-02 23:02:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:44,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 23:02:44,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:02:44,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 23:02:44,633 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-02 23:02:44,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 23:02:44,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [v_entry_point_~array~0.base_BEFORE_CALL_5] [2021-11-02 23:02:44,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:02:44,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-02 23:02:44,955 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-11-02 23:02:44,955 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-02 23:02:44,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err0REQUIRES_VIOLATION [2021-11-02 23:02:44,961 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-11-02 23:02:44,961 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-11-02 23:02:44,962 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-11-02 23:02:44,962 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-11-02 23:02:44,962 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-11-02 23:02:44,962 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-11-02 23:02:44,962 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-11-02 23:02:44,962 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-11-02 23:02:44,962 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-11-02 23:02:44,962 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-11-02 23:02:44,962 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-11-02 23:02:44,963 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-11-02 23:02:44,963 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-11-02 23:02:44,963 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-11-02 23:02:44,963 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-11-02 23:02:44,963 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-11-02 23:02:44,963 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-11-02 23:02:44,964 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-11-02 23:02:44,964 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-11-02 23:02:44,964 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-11-02 23:02:44,964 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-11-02 23:02:44,964 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-11-02 23:02:44,964 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-11-02 23:02:44,965 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-11-02 23:02:44,965 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-11-02 23:02:44,965 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-11-02 23:02:44,965 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-11-02 23:02:44,965 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-11-02 23:02:44,965 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-11-02 23:02:44,966 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-11-02 23:02:44,966 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-11-02 23:02:44,966 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-11-02 23:02:44,966 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-11-02 23:02:44,966 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-11-02 23:02:44,966 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-11-02 23:02:44,967 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-11-02 23:02:44,967 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-11-02 23:02:44,967 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-11-02 23:02:44,967 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-11-02 23:02:44,967 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-11-02 23:02:44,967 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-11-02 23:02:44,968 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-11-02 23:02:44,968 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-11-02 23:02:44,968 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-11-02 23:02:44,968 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-02 23:02:44,968 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-11-02 23:02:44,969 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-11-02 23:02:44,969 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-11-02 23:02:44,969 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-11-02 23:02:44,969 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-11-02 23:02:44,969 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-11-02 23:02:44,969 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-11-02 23:02:44,970 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-11-02 23:02:44,970 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-11-02 23:02:44,970 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-11-02 23:02:44,970 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-11-02 23:02:44,970 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-11-02 23:02:44,970 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-11-02 23:02:44,971 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-11-02 23:02:44,971 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-02 23:02:44,971 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-11-02 23:02:44,971 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-11-02 23:02:44,971 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-11-02 23:02:44,972 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_unsafe_17Err0REQUIRES_VIOLATION [2021-11-02 23:02:44,972 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_unsafe_17Err1REQUIRES_VIOLATION [2021-11-02 23:02:44,972 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_unsafe_17Err2REQUIRES_VIOLATION [2021-11-02 23:02:44,972 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_unsafe_17Err3REQUIRES_VIOLATION [2021-11-02 23:02:44,972 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_unsafe_17Err4ASSERT_VIOLATIONMEMORY_FREE [2021-11-02 23:02:44,972 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_unsafe_17Err5ASSERT_VIOLATIONMEMORY_FREE [2021-11-02 23:02:44,973 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_unsafe_17Err6ASSERT_VIOLATIONMEMORY_FREE [2021-11-02 23:02:44,973 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-11-02 23:02:44,973 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-11-02 23:02:44,973 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-11-02 23:02:44,973 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-11-02 23:02:44,973 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-11-02 23:02:44,974 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-11-02 23:02:44,974 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-11-02 23:02:44,974 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-11-02 23:02:44,974 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err1REQUIRES_VIOLATION [2021-11-02 23:02:44,974 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err2ASSERT_VIOLATIONMEMORY_FREE [2021-11-02 23:02:44,974 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err3ASSERT_VIOLATIONMEMORY_FREE [2021-11-02 23:02:44,975 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err4ASSERT_VIOLATIONMEMORY_FREE [2021-11-02 23:02:44,975 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0REQUIRES_VIOLATION [2021-11-02 23:02:44,975 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1REQUIRES_VIOLATION [2021-11-02 23:02:44,975 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr2ASSERT_VIOLATIONMEMORY_FREE [2021-11-02 23:02:44,975 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr3ASSERT_VIOLATIONMEMORY_FREE [2021-11-02 23:02:44,975 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr4ASSERT_VIOLATIONMEMORY_FREE [2021-11-02 23:02:44,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-02 23:02:45,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-02 23:02:45,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-02 23:02:45,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf56eacb-7570-49a4-bd31-0bbe7f0fc0a7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:02:45,583 INFO L731 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:02:45,587 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 23:02:45,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 11:02:45 BoogieIcfgContainer [2021-11-02 23:02:45,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 23:02:45,609 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 23:02:45,609 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 23:02:45,609 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 23:02:45,609 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:54:43" (3/4) ... [2021-11-02 23:02:45,614 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-02 23:02:45,614 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 23:02:45,615 INFO L168 Benchmark]: Toolchain (without parser) took 484865.88 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 60.6 MB in the beginning and 45.4 MB in the end (delta: 15.2 MB). Peak memory consumption was 44.4 MB. Max. memory is 16.1 GB. [2021-11-02 23:02:45,615 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 50.3 MB. Free memory was 30.0 MB in the beginning and 29.9 MB in the end (delta: 40.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:02:45,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1061.17 ms. Allocated memory is still 83.9 MB. Free memory was 60.4 MB in the beginning and 48.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-02 23:02:45,616 INFO L168 Benchmark]: Boogie Preprocessor took 118.58 ms. Allocated memory is still 83.9 MB. Free memory was 48.5 MB in the beginning and 43.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-02 23:02:45,616 INFO L168 Benchmark]: RCFGBuilder took 1586.48 ms. Allocated memory is still 83.9 MB. Free memory was 43.5 MB in the beginning and 41.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2021-11-02 23:02:45,616 INFO L168 Benchmark]: TraceAbstraction took 482072.03 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 40.6 MB in the beginning and 45.4 MB in the end (delta: -4.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. [2021-11-02 23:02:45,616 INFO L168 Benchmark]: Witness Printer took 5.06 ms. Allocated memory is still 113.2 MB. Free memory is still 45.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 23:02:45,618 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 50.3 MB. Free memory was 30.0 MB in the beginning and 29.9 MB in the end (delta: 40.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1061.17 ms. Allocated memory is still 83.9 MB. Free memory was 60.4 MB in the beginning and 48.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 118.58 ms. Allocated memory is still 83.9 MB. Free memory was 48.5 MB in the beginning and 43.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1586.48 ms. Allocated memory is still 83.9 MB. Free memory was 43.5 MB in the beginning and 41.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 482072.03 ms. Allocated memory was 83.9 MB in the beginning and 113.2 MB in the end (delta: 29.4 MB). Free memory was 40.6 MB in the beginning and 45.4 MB in the end (delta: -4.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.06 ms. Allocated memory is still 113.2 MB. Free memory is still 45.4 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: 778]: 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: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L794] CALL entry_point() [L782] int i; [L783] int len = 10; [L784] CALL, EXPR ldv_malloc(sizeof(struct A17*)*len) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L784] RET, EXPR ldv_malloc(sizeof(struct A17*)*len) [L784] struct A17 **array = (struct A17 **)ldv_malloc(sizeof(struct A17*)*len); [L785] COND FALSE !(!array) [L786] i=0 [L786] COND TRUE i=0) [L773] return - -3; [L789] RET alloc_unsafe_17(array, len) [L790] CALL free_17(array, len) [L776] int i; [L777] i=0 [L777] COND TRUE i