./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.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_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/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_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/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_550d25c6-6ced-40e0-9ae3-272e8c60fe74/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 0f3b69410d84404822a26401b92e2c10c65259dbe30a6f843124f3a9a51940ad --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:10:37,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:10:37,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:10:37,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:10:37,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:10:37,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:10:37,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:10:37,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:10:37,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:10:37,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:10:37,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:10:37,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:10:37,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:10:37,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:10:37,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:10:37,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:10:37,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:10:37,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:10:37,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:10:37,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:10:37,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:10:37,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:10:37,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:10:37,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:10:37,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:10:37,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:10:37,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:10:37,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:10:37,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:10:37,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:10:37,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:10:37,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:10:37,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:10:37,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:10:37,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:10:37,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:10:37,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:10:37,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:10:37,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:10:37,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:10:37,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:10:37,415 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-02 22:10:37,462 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:10:37,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:10:37,463 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:10:37,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:10:37,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:10:37,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:10:37,472 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:10:37,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:10:37,473 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:10:37,473 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:10:37,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:10:37,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:10:37,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:10:37,475 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:10:37,475 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:10:37,475 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:10:37,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:10:37,476 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:10:37,476 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:10:37,476 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:10:37,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:10:37,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:10:37,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:10:37,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:10:37,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:10:37,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:10:37,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:10:37,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:10:37,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:10:37,480 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_550d25c6-6ced-40e0-9ae3-272e8c60fe74/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f3b69410d84404822a26401b92e2c10c65259dbe30a6f843124f3a9a51940ad [2021-11-02 22:10:37,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:10:37,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:10:37,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:10:37,853 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:10:37,855 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:10:37,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i [2021-11-02 22:10:37,925 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/data/0add7f47d/ed87e3bd82bf462c84a88f8cc79d70c4/FLAG62445c126 [2021-11-02 22:10:38,646 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:10:38,647 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i [2021-11-02 22:10:38,683 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/data/0add7f47d/ed87e3bd82bf462c84a88f8cc79d70c4/FLAG62445c126 [2021-11-02 22:10:38,937 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/data/0add7f47d/ed87e3bd82bf462c84a88f8cc79d70c4 [2021-11-02 22:10:38,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:10:38,943 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:10:38,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:10:38,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:10:38,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:10:38,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:10:38" (1/1) ... [2021-11-02 22:10:38,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc2a0fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:10:38, skipping insertion in model container [2021-11-02 22:10:38,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:10:38" (1/1) ... [2021-11-02 22:10:38,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:10:39,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:10:39,417 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[33021,33034] [2021-11-02 22:10:39,549 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[49681,49694] [2021-11-02 22:10:39,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:10:39,580 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 22:10:39,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3978c4dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:10:39, skipping insertion in model container [2021-11-02 22:10:39,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:10:39,592 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-02 22:10:39,595 INFO L168 Benchmark]: Toolchain (without parser) took 650.23 ms. Allocated memory was 100.7 MB in the beginning and 140.5 MB in the end (delta: 39.8 MB). Free memory was 71.0 MB in the beginning and 100.6 MB in the end (delta: -29.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:10:39,596 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 100.7 MB. Free memory is still 57.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:10:39,597 INFO L168 Benchmark]: CACSL2BoogieTranslator took 645.58 ms. Allocated memory was 100.7 MB in the beginning and 140.5 MB in the end (delta: 39.8 MB). Free memory was 70.7 MB in the beginning and 100.6 MB in the end (delta: -29.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:10:39,599 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 100.7 MB. Free memory is still 57.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 645.58 ms. Allocated memory was 100.7 MB in the beginning and 140.5 MB in the end (delta: 39.8 MB). Free memory was 70.7 MB in the beginning and 100.6 MB in the end (delta: -29.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: 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_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/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_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/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_550d25c6-6ced-40e0-9ae3-272e8c60fe74/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 0f3b69410d84404822a26401b92e2c10c65259dbe30a6f843124f3a9a51940ad --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:10:41,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:10:41,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:10:41,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:10:41,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:10:41,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:10:41,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:10:41,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:10:41,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:10:41,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:10:41,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:10:41,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:10:41,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:10:41,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:10:41,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:10:41,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:10:41,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:10:41,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:10:41,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:10:41,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:10:41,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:10:41,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:10:41,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:10:41,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:10:41,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:10:41,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:10:41,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:10:41,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:10:41,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:10:41,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:10:41,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:10:41,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:10:41,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:10:42,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:10:42,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:10:42,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:10:42,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:10:42,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:10:42,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:10:42,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:10:42,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:10:42,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-02 22:10:42,066 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:10:42,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:10:42,068 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:10:42,068 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:10:42,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:10:42,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:10:42,070 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:10:42,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:10:42,071 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:10:42,071 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:10:42,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:10:42,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:10:42,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:10:42,073 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:10:42,073 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:10:42,073 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:10:42,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:10:42,074 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:10:42,074 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-02 22:10:42,074 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-02 22:10:42,074 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:10:42,074 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:10:42,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:10:42,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:10:42,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:10:42,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:10:42,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:10:42,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:10:42,076 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-02 22:10:42,076 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-02 22:10:42,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:10:42,077 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-02 22:10:42,077 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_550d25c6-6ced-40e0-9ae3-272e8c60fe74/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f3b69410d84404822a26401b92e2c10c65259dbe30a6f843124f3a9a51940ad [2021-11-02 22:10:42,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:10:42,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:10:42,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:10:42,520 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:10:42,521 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:10:42,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i [2021-11-02 22:10:42,587 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/data/3313b75e4/29ce86b145b44118be3b1eb3130f91e5/FLAG0a6f67fff [2021-11-02 22:10:43,239 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:10:43,240 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i [2021-11-02 22:10:43,265 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/data/3313b75e4/29ce86b145b44118be3b1eb3130f91e5/FLAG0a6f67fff [2021-11-02 22:10:43,454 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/data/3313b75e4/29ce86b145b44118be3b1eb3130f91e5 [2021-11-02 22:10:43,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:10:43,458 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:10:43,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:10:43,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:10:43,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:10:43,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:10:43" (1/1) ... [2021-11-02 22:10:43,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1412c6eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:10:43, skipping insertion in model container [2021-11-02 22:10:43,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:10:43" (1/1) ... [2021-11-02 22:10:43,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:10:43,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:10:44,040 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[33021,33034] [2021-11-02 22:10:44,187 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[49681,49694] [2021-11-02 22:10:44,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:10:44,219 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-02 22:10:44,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:10:44,270 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[33021,33034] [2021-11-02 22:10:44,423 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[49681,49694] [2021-11-02 22:10:44,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:10:44,458 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:10:44,504 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[33021,33034] [2021-11-02 22:10:44,609 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[49681,49694] [2021-11-02 22:10:44,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:10:44,697 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:10:44,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:10:44 WrapperNode [2021-11-02 22:10:44,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:10:44,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:10:44,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:10:44,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:10:44,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:10:44" (1/1) ... [2021-11-02 22:10:44,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:10:44" (1/1) ... [2021-11-02 22:10:44,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:10:44" (1/1) ... [2021-11-02 22:10:44,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:10:44" (1/1) ... [2021-11-02 22:10:44,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:10:44" (1/1) ... [2021-11-02 22:10:44,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:10:44" (1/1) ... [2021-11-02 22:10:44,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:10:44" (1/1) ... [2021-11-02 22:10:44,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:10:45,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:10:45,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:10:45,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:10:45,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:10:44" (1/1) ... [2021-11-02 22:10:45,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:10:45,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:10:45,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:10:45,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:10:45,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-02 22:10:45,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:10:45,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:10:45,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-02 22:10:45,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-02 22:10:45,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-02 22:10:45,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-02 22:10:45,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-02 22:10:45,092 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-02 22:10:45,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-02 22:10:45,092 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-02 22:10:45,092 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-02 22:10:45,092 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-02 22:10:45,093 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-02 22:10:45,093 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-02 22:10:45,093 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-02 22:10:45,093 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-02 22:10:45,093 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-02 22:10:45,093 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-02 22:10:45,093 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-02 22:10:45,093 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-02 22:10:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-02 22:10:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-02 22:10:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-02 22:10:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-02 22:10:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-02 22:10:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-02 22:10:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-02 22:10:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-02 22:10:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-02 22:10:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-02 22:10:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-02 22:10:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-02 22:10:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-02 22:10:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-02 22:10:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-02 22:10:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-02 22:10:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-02 22:10:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-02 22:10:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-02 22:10:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-02 22:10:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-02 22:10:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-02 22:10:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-02 22:10:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-02 22:10:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-02 22:10:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-02 22:10:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-02 22:10:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-02 22:10:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-02 22:10:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-02 22:10:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-02 22:10:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-02 22:10:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-02 22:10:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-02 22:10:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-02 22:10:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-02 22:10:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-02 22:10:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-02 22:10:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-02 22:10:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-02 22:10:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-02 22:10:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-02 22:10:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-02 22:10:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-02 22:10:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-02 22:10:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-02 22:10:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-02 22:10:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-02 22:10:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-02 22:10:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-02 22:10:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-02 22:10:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-02 22:10:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-02 22:10:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-02 22:10:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-02 22:10:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-02 22:10:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-02 22:10:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-02 22:10:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-02 22:10:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-02 22:10:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-02 22:10:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-02 22:10:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-02 22:10:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-02 22:10:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-02 22:10:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-02 22:10:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-02 22:10:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-02 22:10:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-02 22:10:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-02 22:10:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-02 22:10:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-02 22:10:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-02 22:10:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-02 22:10:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-02 22:10:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-02 22:10:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-02 22:10:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-02 22:10:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-02 22:10:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-02 22:10:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-02 22:10:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-02 22:10:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-02 22:10:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-02 22:10:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-02 22:10:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-02 22:10:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-02 22:10:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-02 22:10:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-02 22:10:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-02 22:10:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-02 22:10:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-02 22:10:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-02 22:10:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-02 22:10:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-02 22:10:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-02 22:10:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-02 22:10:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-02 22:10:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-02 22:10:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-02 22:10:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-02 22:10:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-02 22:10:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-02 22:10:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-02 22:10:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-02 22:10:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-02 22:10:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-02 22:10:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-02 22:10:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-02 22:10:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-02 22:10:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-02 22:10:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-02 22:10:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-02 22:10:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-02 22:10:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-02 22:10:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-02 22:10:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-02 22:10:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-02 22:10:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-02 22:10:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-02 22:10:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-02 22:10:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-02 22:10:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-02 22:10:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-02 22:10:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-02 22:10:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-02 22:10:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-02 22:10:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-02 22:10:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-02 22:10:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-02 22:10:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-02 22:10:45,128 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-02 22:10:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-02 22:10:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-02 22:10:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-02 22:10:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-02 22:10:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-02 22:10:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-02 22:10:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-02 22:10:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-02 22:10:45,129 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-02 22:10:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-02 22:10:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-02 22:10:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-02 22:10:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-02 22:10:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-02 22:10:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-02 22:10:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-02 22:10:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-02 22:10:45,130 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-02 22:10:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-02 22:10:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-02 22:10:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-02 22:10:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-02 22:10:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:10:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-02 22:10:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-02 22:10:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-02 22:10:45,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:10:45,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-02 22:10:45,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-02 22:10:45,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:10:45,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:10:45,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-02 22:10:45,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:10:45,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-02 22:10:45,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-02 22:10:45,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-02 22:10:45,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:10:45,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:10:45,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-02 22:10:45,821 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 22:10:53,198 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:10:53,200 INFO L299 CfgBuilder]: Removed 92 assume(true) statements. [2021-11-02 22:10:53,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:10:53 BoogieIcfgContainer [2021-11-02 22:10:53,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:10:53,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:10:53,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:10:53,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:10:53,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:10:43" (1/3) ... [2021-11-02 22:10:53,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228b63e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:10:53, skipping insertion in model container [2021-11-02 22:10:53,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:10:44" (2/3) ... [2021-11-02 22:10:53,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228b63e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:10:53, skipping insertion in model container [2021-11-02 22:10:53,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:10:53" (3/3) ... [2021-11-02 22:10:53,215 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test5-2.i [2021-11-02 22:10:53,221 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:10:53,221 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 834 error locations. [2021-11-02 22:10:53,278 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:10:53,287 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 22:10:53,287 INFO L340 AbstractCegarLoop]: Starting to check reachability of 834 error locations. [2021-11-02 22:10:53,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 1663 states, 815 states have (on average 2.245398773006135) internal successors, (1830), 1648 states have internal predecessors, (1830), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 10 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-02 22:10:53,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 22:10:53,355 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:10:53,355 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:10:53,356 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-02 22:10:53,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:10:53,361 INFO L85 PathProgramCache]: Analyzing trace with hash -17023004, now seen corresponding path program 1 times [2021-11-02 22:10:53,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:10:53,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926505732] [2021-11-02 22:10:53,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:10:53,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:10:53,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:10:53,377 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:10:53,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-02 22:10:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:10:53,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-02 22:10:53,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:10:53,695 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 22:10:53,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:10:53,730 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 22:10:53,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:10:53,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926505732] [2021-11-02 22:10:53,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926505732] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:10:53,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:10:53,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 22:10:53,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130655497] [2021-11-02 22:10:53,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:10:53,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:10:53,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:10:53,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:10:53,757 INFO L87 Difference]: Start difference. First operand has 1663 states, 815 states have (on average 2.245398773006135) internal successors, (1830), 1648 states have internal predecessors, (1830), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 10 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:10:53,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:10:53,926 INFO L93 Difference]: Finished difference Result 1645 states and 1739 transitions. [2021-11-02 22:10:53,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:10:53,927 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-02 22:10:53,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:10:53,962 INFO L225 Difference]: With dead ends: 1645 [2021-11-02 22:10:53,962 INFO L226 Difference]: Without dead ends: 1642 [2021-11-02 22:10:53,964 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:10:53,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2021-11-02 22:10:54,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1642. [2021-11-02 22:10:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 806 states have (on average 2.120347394540943) internal successors, (1709), 1628 states have internal predecessors, (1709), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-02 22:10:54,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 1736 transitions. [2021-11-02 22:10:54,140 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 1736 transitions. Word has length 9 [2021-11-02 22:10:54,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:10:54,141 INFO L470 AbstractCegarLoop]: Abstraction has 1642 states and 1736 transitions. [2021-11-02 22:10:54,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:10:54,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 1736 transitions. [2021-11-02 22:10:54,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 22:10:54,142 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:10:54,142 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:10:54,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-02 22:10:54,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:10:54,355 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-02 22:10:54,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:10:54,355 INFO L85 PathProgramCache]: Analyzing trace with hash -17022942, now seen corresponding path program 1 times [2021-11-02 22:10:54,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:10:54,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809859661] [2021-11-02 22:10:54,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:10:54,356 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:10:54,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:10:54,358 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:10:54,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-02 22:10:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:10:54,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:10:54,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:10:54,706 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 22:10:54,733 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 22:10:54,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:10:54,779 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 22:10:54,779 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:10:54,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809859661] [2021-11-02 22:10:54,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809859661] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:10:54,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:10:54,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 22:10:54,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385094717] [2021-11-02 22:10:54,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:10:54,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:10:54,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:10:54,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:10:54,786 INFO L87 Difference]: Start difference. First operand 1642 states and 1736 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:10:58,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:10:58,245 INFO L93 Difference]: Finished difference Result 1887 states and 2015 transitions. [2021-11-02 22:10:58,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:10:58,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-02 22:10:58,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:10:58,257 INFO L225 Difference]: With dead ends: 1887 [2021-11-02 22:10:58,257 INFO L226 Difference]: Without dead ends: 1887 [2021-11-02 22:10:58,258 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 22:10:58,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2021-11-02 22:10:58,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1627. [2021-11-02 22:10:58,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 882 states have (on average 1.9875283446712018) internal successors, (1753), 1613 states have internal predecessors, (1753), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-02 22:10:58,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 1780 transitions. [2021-11-02 22:10:58,312 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 1780 transitions. Word has length 9 [2021-11-02 22:10:58,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:10:58,313 INFO L470 AbstractCegarLoop]: Abstraction has 1627 states and 1780 transitions. [2021-11-02 22:10:58,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:10:58,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 1780 transitions. [2021-11-02 22:10:58,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 22:10:58,314 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:10:58,314 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:10:58,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:10:58,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:10:58,531 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-02 22:10:58,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:10:58,532 INFO L85 PathProgramCache]: Analyzing trace with hash -17022941, now seen corresponding path program 1 times [2021-11-02 22:10:58,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:10:58,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543544942] [2021-11-02 22:10:58,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:10:58,533 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:10:58,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:10:58,537 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:10:58,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-02 22:10:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:10:58,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:10:58,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:10:58,807 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 22:10:58,832 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 22:10:58,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:10:58,916 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 22:10:58,917 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:10:58,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543544942] [2021-11-02 22:10:58,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543544942] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:10:58,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:10:58,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-02 22:10:58,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126399853] [2021-11-02 22:10:58,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:10:58,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:10:58,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:10:58,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:10:58,931 INFO L87 Difference]: Start difference. First operand 1627 states and 1780 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:11:05,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:05,892 INFO L93 Difference]: Finished difference Result 2187 states and 2382 transitions. [2021-11-02 22:11:05,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:11:05,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-02 22:11:05,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:05,905 INFO L225 Difference]: With dead ends: 2187 [2021-11-02 22:11:05,905 INFO L226 Difference]: Without dead ends: 2187 [2021-11-02 22:11:05,905 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:11:05,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2021-11-02 22:11:05,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 1783. [2021-11-02 22:11:05,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1048 states have (on average 1.9646946564885497) internal successors, (2059), 1769 states have internal predecessors, (2059), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-02 22:11:05,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 2086 transitions. [2021-11-02 22:11:05,955 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 2086 transitions. Word has length 9 [2021-11-02 22:11:05,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:05,955 INFO L470 AbstractCegarLoop]: Abstraction has 1783 states and 2086 transitions. [2021-11-02 22:11:05,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:11:05,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 2086 transitions. [2021-11-02 22:11:05,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 22:11:05,956 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:05,956 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:11:05,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:11:06,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:11:06,169 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr640REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-02 22:11:06,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:06,170 INFO L85 PathProgramCache]: Analyzing trace with hash -526023829, now seen corresponding path program 1 times [2021-11-02 22:11:06,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:11:06,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788760841] [2021-11-02 22:11:06,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:06,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:11:06,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:11:06,172 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:11:06,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-02 22:11:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:06,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:11:06,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:11:06,411 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 22:11:06,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:11:06,454 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 22:11:06,454 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:11:06,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788760841] [2021-11-02 22:11:06,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788760841] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:11:06,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:11:06,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 22:11:06,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71105122] [2021-11-02 22:11:06,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:11:06,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:11:06,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:11:06,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:11:06,457 INFO L87 Difference]: Start difference. First operand 1783 states and 2086 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:11:06,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:06,664 INFO L93 Difference]: Finished difference Result 3334 states and 3920 transitions. [2021-11-02 22:11:06,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:11:06,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-02 22:11:06,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:06,683 INFO L225 Difference]: With dead ends: 3334 [2021-11-02 22:11:06,683 INFO L226 Difference]: Without dead ends: 3334 [2021-11-02 22:11:06,684 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:11:06,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2021-11-02 22:11:06,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 2717. [2021-11-02 22:11:06,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2717 states, 1981 states have (on average 1.9575971731448762) internal successors, (3878), 2696 states have internal predecessors, (3878), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-02 22:11:06,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 3919 transitions. [2021-11-02 22:11:06,763 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 3919 transitions. Word has length 10 [2021-11-02 22:11:06,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:06,764 INFO L470 AbstractCegarLoop]: Abstraction has 2717 states and 3919 transitions. [2021-11-02 22:11:06,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:11:06,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 3919 transitions. [2021-11-02 22:11:06,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 22:11:06,765 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:06,765 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:11:06,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:11:06,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:11:06,982 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-02 22:11:06,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:06,983 INFO L85 PathProgramCache]: Analyzing trace with hash -247252948, now seen corresponding path program 1 times [2021-11-02 22:11:06,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:11:06,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26684190] [2021-11-02 22:11:06,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:06,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:11:06,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:11:06,985 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:11:07,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-02 22:11:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:07,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:11:07,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:11:07,312 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 22:11:07,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:11:07,372 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 22:11:07,372 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:11:07,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26684190] [2021-11-02 22:11:07,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26684190] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:11:07,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:11:07,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 22:11:07,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574857776] [2021-11-02 22:11:07,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:11:07,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:11:07,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:11:07,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:11:07,375 INFO L87 Difference]: Start difference. First operand 2717 states and 3919 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:11:07,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:07,433 INFO L93 Difference]: Finished difference Result 2657 states and 3833 transitions. [2021-11-02 22:11:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:11:07,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-02 22:11:07,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:07,453 INFO L225 Difference]: With dead ends: 2657 [2021-11-02 22:11:07,454 INFO L226 Difference]: Without dead ends: 2657 [2021-11-02 22:11:07,454 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:11:07,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2021-11-02 22:11:07,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2657. [2021-11-02 22:11:07,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2657 states, 1945 states have (on average 1.9496143958868895) internal successors, (3792), 2636 states have internal predecessors, (3792), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-02 22:11:07,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2657 states to 2657 states and 3833 transitions. [2021-11-02 22:11:07,533 INFO L78 Accepts]: Start accepts. Automaton has 2657 states and 3833 transitions. Word has length 15 [2021-11-02 22:11:07,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:07,535 INFO L470 AbstractCegarLoop]: Abstraction has 2657 states and 3833 transitions. [2021-11-02 22:11:07,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:11:07,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2657 states and 3833 transitions. [2021-11-02 22:11:07,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 22:11:07,540 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:07,540 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 22:11:07,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:11:07,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:11:07,755 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr29REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-02 22:11:07,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:07,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1386883385, now seen corresponding path program 1 times [2021-11-02 22:11:07,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:11:07,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946299839] [2021-11-02 22:11:07,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:07,756 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:11:07,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:11:07,758 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:11:07,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-02 22:11:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:08,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:11:08,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:11:08,076 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 22:11:08,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:11:08,128 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 22:11:08,128 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:11:08,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946299839] [2021-11-02 22:11:08,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946299839] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:11:08,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:11:08,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-02 22:11:08,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029053518] [2021-11-02 22:11:08,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:11:08,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:11:08,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:11:08,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:11:08,130 INFO L87 Difference]: Start difference. First operand 2657 states and 3833 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:11:08,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:08,240 INFO L93 Difference]: Finished difference Result 2629 states and 3777 transitions. [2021-11-02 22:11:08,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:11:08,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-02 22:11:08,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:08,256 INFO L225 Difference]: With dead ends: 2629 [2021-11-02 22:11:08,257 INFO L226 Difference]: Without dead ends: 2629 [2021-11-02 22:11:08,257 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:11:08,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2021-11-02 22:11:08,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 2627. [2021-11-02 22:11:08,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 1929 states have (on average 1.935717988595127) internal successors, (3734), 2606 states have internal predecessors, (3734), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-02 22:11:08,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 3775 transitions. [2021-11-02 22:11:08,341 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 3775 transitions. Word has length 17 [2021-11-02 22:11:08,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:08,341 INFO L470 AbstractCegarLoop]: Abstraction has 2627 states and 3775 transitions. [2021-11-02 22:11:08,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:11:08,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 3775 transitions. [2021-11-02 22:11:08,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 22:11:08,343 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:08,343 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:11:08,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:11:08,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:11:08,555 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-02 22:11:08,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:08,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1000557300, now seen corresponding path program 1 times [2021-11-02 22:11:08,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:11:08,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158441509] [2021-11-02 22:11:08,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:08,556 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:11:08,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:11:08,557 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:11:08,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-02 22:11:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:08,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:11:08,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:11:08,800 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 22:11:08,922 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 22:11:08,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:11:09,051 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 22:11:09,051 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:11:09,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158441509] [2021-11-02 22:11:09,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158441509] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:11:09,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:11:09,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 22:11:09,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656596392] [2021-11-02 22:11:09,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:11:09,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:11:09,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:11:09,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:11:09,053 INFO L87 Difference]: Start difference. First operand 2627 states and 3775 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:11:13,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:13,748 INFO L93 Difference]: Finished difference Result 4072 states and 5650 transitions. [2021-11-02 22:11:13,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:11:13,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-02 22:11:13,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:13,772 INFO L225 Difference]: With dead ends: 4072 [2021-11-02 22:11:13,772 INFO L226 Difference]: Without dead ends: 4072 [2021-11-02 22:11:13,772 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:11:13,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4072 states. [2021-11-02 22:11:13,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4072 to 2623. [2021-11-02 22:11:13,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 1929 states have (on average 1.931570762052877) internal successors, (3726), 2602 states have internal predecessors, (3726), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-02 22:11:13,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 3767 transitions. [2021-11-02 22:11:13,845 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 3767 transitions. Word has length 31 [2021-11-02 22:11:13,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:13,846 INFO L470 AbstractCegarLoop]: Abstraction has 2623 states and 3767 transitions. [2021-11-02 22:11:13,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:11:13,846 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 3767 transitions. [2021-11-02 22:11:13,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 22:11:13,847 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:13,847 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:11:13,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:11:14,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:11:14,073 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-02 22:11:14,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:14,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1000557301, now seen corresponding path program 1 times [2021-11-02 22:11:14,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:11:14,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888342886] [2021-11-02 22:11:14,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:14,074 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:11:14,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:11:14,075 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:11:14,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-02 22:11:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:14,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:11:14,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:11:14,390 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 22:11:14,669 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 22:11:14,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:11:15,103 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 22:11:15,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:11:15,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888342886] [2021-11-02 22:11:15,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888342886] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:11:15,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:11:15,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 22:11:15,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694764684] [2021-11-02 22:11:15,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:11:15,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:11:15,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:11:15,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:11:15,106 INFO L87 Difference]: Start difference. First operand 2623 states and 3767 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:11:26,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:26,931 INFO L93 Difference]: Finished difference Result 3387 states and 4564 transitions. [2021-11-02 22:11:26,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:11:26,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-02 22:11:26,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:26,948 INFO L225 Difference]: With dead ends: 3387 [2021-11-02 22:11:26,948 INFO L226 Difference]: Without dead ends: 3387 [2021-11-02 22:11:26,949 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:11:26,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3387 states. [2021-11-02 22:11:27,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3387 to 2619. [2021-11-02 22:11:27,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 1929 states have (on average 1.9274235355106273) internal successors, (3718), 2598 states have internal predecessors, (3718), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-02 22:11:27,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 3759 transitions. [2021-11-02 22:11:27,038 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 3759 transitions. Word has length 31 [2021-11-02 22:11:27,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:27,038 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 3759 transitions. [2021-11-02 22:11:27,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:11:27,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 3759 transitions. [2021-11-02 22:11:27,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 22:11:27,040 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:27,040 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:11:27,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:11:27,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:11:27,257 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-02 22:11:27,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:27,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1312441104, now seen corresponding path program 1 times [2021-11-02 22:11:27,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:11:27,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508649292] [2021-11-02 22:11:27,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:27,258 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:11:27,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:11:27,259 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:11:27,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-02 22:11:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:27,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:11:27,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:11:27,699 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 22:11:27,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:11:27,844 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 22:11:27,844 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:11:27,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508649292] [2021-11-02 22:11:27,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508649292] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:11:27,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:11:27,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:11:27,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602782962] [2021-11-02 22:11:27,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:11:27,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:11:27,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:11:27,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:11:27,846 INFO L87 Difference]: Start difference. First operand 2619 states and 3759 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:11:27,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:27,918 INFO L93 Difference]: Finished difference Result 2607 states and 3739 transitions. [2021-11-02 22:11:27,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:11:27,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-11-02 22:11:27,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:27,942 INFO L225 Difference]: With dead ends: 2607 [2021-11-02 22:11:27,942 INFO L226 Difference]: Without dead ends: 2607 [2021-11-02 22:11:27,943 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:11:27,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2021-11-02 22:11:27,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 2607. [2021-11-02 22:11:27,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2607 states, 1917 states have (on average 1.92905581637976) internal successors, (3698), 2586 states have internal predecessors, (3698), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-02 22:11:27,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2607 states to 2607 states and 3739 transitions. [2021-11-02 22:11:27,997 INFO L78 Accepts]: Start accepts. Automaton has 2607 states and 3739 transitions. Word has length 46 [2021-11-02 22:11:27,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:27,998 INFO L470 AbstractCegarLoop]: Abstraction has 2607 states and 3739 transitions. [2021-11-02 22:11:27,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:11:27,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2607 states and 3739 transitions. [2021-11-02 22:11:28,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 22:11:28,007 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:28,008 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:11:28,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:11:28,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:11:28,221 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-02 22:11:28,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:28,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1817426652, now seen corresponding path program 1 times [2021-11-02 22:11:28,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:11:28,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588958063] [2021-11-02 22:11:28,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:28,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:11:28,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:11:28,225 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:11:28,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-02 22:11:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:28,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:11:28,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:11:29,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:11:29,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:11:29,469 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 22:11:29,469 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:11:29,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588958063] [2021-11-02 22:11:29,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588958063] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:11:29,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:11:29,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 22:11:29,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326059435] [2021-11-02 22:11:29,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:11:29,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:11:29,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:11:29,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:11:29,471 INFO L87 Difference]: Start difference. First operand 2607 states and 3739 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:11:29,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:29,721 INFO L93 Difference]: Finished difference Result 2618 states and 3588 transitions. [2021-11-02 22:11:29,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:11:29,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-11-02 22:11:29,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:29,730 INFO L225 Difference]: With dead ends: 2618 [2021-11-02 22:11:29,730 INFO L226 Difference]: Without dead ends: 2618 [2021-11-02 22:11:29,731 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 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 22:11:29,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2021-11-02 22:11:29,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2423. [2021-11-02 22:11:29,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 1733 states have (on average 1.9290248124639353) internal successors, (3343), 2402 states have internal predecessors, (3343), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-02 22:11:29,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3384 transitions. [2021-11-02 22:11:29,777 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 3384 transitions. Word has length 54 [2021-11-02 22:11:29,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:29,777 INFO L470 AbstractCegarLoop]: Abstraction has 2423 states and 3384 transitions. [2021-11-02 22:11:29,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:11:29,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 3384 transitions. [2021-11-02 22:11:29,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 22:11:29,778 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:29,779 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:11:29,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:11:29,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:11:29,996 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-02 22:11:29,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:29,996 INFO L85 PathProgramCache]: Analyzing trace with hash -707061665, now seen corresponding path program 1 times [2021-11-02 22:11:29,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:11:29,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750016528] [2021-11-02 22:11:29,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:29,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:11:29,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:11:29,999 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:11:30,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-02 22:11:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:30,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:11:30,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:11:30,696 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 22:11:30,704 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 22:11:31,393 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-02 22:11:31,393 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 25 treesize of output 27 [2021-11-02 22:11:31,400 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:11:31,400 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 24 treesize of output 20 [2021-11-02 22:11:31,429 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 22:11:31,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:11:36,231 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 22:11:36,231 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:11:36,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750016528] [2021-11-02 22:11:36,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750016528] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:11:36,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:11:36,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 22:11:36,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710158843] [2021-11-02 22:11:36,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:11:36,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:11:36,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:11:36,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-02 22:11:36,233 INFO L87 Difference]: Start difference. First operand 2423 states and 3384 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:12:00,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:00,453 INFO L93 Difference]: Finished difference Result 4043 states and 5520 transitions. [2021-11-02 22:12:00,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:12:00,465 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-11-02 22:12:00,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:00,475 INFO L225 Difference]: With dead ends: 4043 [2021-11-02 22:12:00,475 INFO L226 Difference]: Without dead ends: 4043 [2021-11-02 22:12:00,475 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-02 22:12:00,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4043 states. [2021-11-02 22:12:00,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4043 to 2563. [2021-11-02 22:12:00,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 1911 states have (on average 1.8833071690214547) internal successors, (3599), 2536 states have internal predecessors, (3599), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-02 22:12:00,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 3652 transitions. [2021-11-02 22:12:00,535 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 3652 transitions. Word has length 57 [2021-11-02 22:12:00,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:00,535 INFO L470 AbstractCegarLoop]: Abstraction has 2563 states and 3652 transitions. [2021-11-02 22:12:00,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:12:00,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 3652 transitions. [2021-11-02 22:12:00,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 22:12:00,536 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:00,537 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1] [2021-11-02 22:12:00,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-02 22:12:00,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:12:00,752 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-02 22:12:00,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:00,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1116726391, now seen corresponding path program 1 times [2021-11-02 22:12:00,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:12:00,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121727642] [2021-11-02 22:12:00,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:00,754 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:12:00,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:12:00,755 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:12:00,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-02 22:12:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:01,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:12:01,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:01,371 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 22:12:01,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-02 22:12:01,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-02 22:12:01,462 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 22:12:01,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:12:01,617 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 22:12:01,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:12:01,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121727642] [2021-11-02 22:12:01,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121727642] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:01,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:01,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:12:01,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820066412] [2021-11-02 22:12:01,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:12:01,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:12:01,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:12:01,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:12:01,619 INFO L87 Difference]: Start difference. First operand 2563 states and 3652 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:12:06,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:06,596 INFO L93 Difference]: Finished difference Result 2562 states and 3650 transitions. [2021-11-02 22:12:06,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:12:06,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-02 22:12:06,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:06,603 INFO L225 Difference]: With dead ends: 2562 [2021-11-02 22:12:06,603 INFO L226 Difference]: Without dead ends: 2562 [2021-11-02 22:12:06,603 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:12:06,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2021-11-02 22:12:06,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 2562. [2021-11-02 22:12:06,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 1911 states have (on average 1.8822605965463108) internal successors, (3597), 2535 states have internal predecessors, (3597), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-02 22:12:06,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 3650 transitions. [2021-11-02 22:12:06,646 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 3650 transitions. Word has length 62 [2021-11-02 22:12:06,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:06,647 INFO L470 AbstractCegarLoop]: Abstraction has 2562 states and 3650 transitions. [2021-11-02 22:12:06,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:12:06,647 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 3650 transitions. [2021-11-02 22:12:06,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 22:12:06,648 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:06,648 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1] [2021-11-02 22:12:06,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-02 22:12:06,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:12:06,863 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-02 22:12:06,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:06,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1116726392, now seen corresponding path program 1 times [2021-11-02 22:12:06,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:12:06,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413000807] [2021-11-02 22:12:06,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:06,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:12:06,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:12:06,866 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:12:06,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-02 22:12:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:07,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:12:07,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:07,579 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 22:12:07,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-02 22:12:07,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-02 22:12:07,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-02 22:12:07,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-02 22:12:07,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:12:07,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:12:08,050 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 22:12:08,050 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:12:08,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413000807] [2021-11-02 22:12:08,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413000807] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:08,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:08,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-02 22:12:08,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869713133] [2021-11-02 22:12:08,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:12:08,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:12:08,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:12:08,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:12:08,053 INFO L87 Difference]: Start difference. First operand 2562 states and 3650 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:12:23,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:23,389 INFO L93 Difference]: Finished difference Result 2561 states and 3648 transitions. [2021-11-02 22:12:23,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:12:23,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-02 22:12:23,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:23,398 INFO L225 Difference]: With dead ends: 2561 [2021-11-02 22:12:23,398 INFO L226 Difference]: Without dead ends: 2561 [2021-11-02 22:12:23,399 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:12:23,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2021-11-02 22:12:23,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2561. [2021-11-02 22:12:23,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2561 states, 1909 states have (on average 1.8831849135673127) internal successors, (3595), 2534 states have internal predecessors, (3595), 27 states have call successors, (27), 5 states have call predecessors, (27), 4 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-02 22:12:23,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2561 states to 2561 states and 3648 transitions. [2021-11-02 22:12:23,452 INFO L78 Accepts]: Start accepts. Automaton has 2561 states and 3648 transitions. Word has length 62 [2021-11-02 22:12:23,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:23,453 INFO L470 AbstractCegarLoop]: Abstraction has 2561 states and 3648 transitions. [2021-11-02 22:12:23,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:12:23,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2561 states and 3648 transitions. [2021-11-02 22:12:23,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 22:12:23,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:23,454 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:12:23,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-02 22:12:23,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:12:23,669 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-02 22:12:23,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:23,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1880694946, now seen corresponding path program 1 times [2021-11-02 22:12:23,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:12:23,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478406543] [2021-11-02 22:12:23,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:23,672 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:12:23,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:12:23,673 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:12:23,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-02 22:12:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:24,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:12:24,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:24,418 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 22:12:24,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:12:24,635 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 22:12:24,635 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:12:24,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478406543] [2021-11-02 22:12:24,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478406543] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:24,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:24,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-02 22:12:24,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099262816] [2021-11-02 22:12:24,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:12:24,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:12:24,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:12:24,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:12:24,637 INFO L87 Difference]: Start difference. First operand 2561 states and 3648 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:12:24,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:24,840 INFO L93 Difference]: Finished difference Result 2571 states and 3666 transitions. [2021-11-02 22:12:24,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:12:24,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 70 [2021-11-02 22:12:24,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:24,849 INFO L225 Difference]: With dead ends: 2571 [2021-11-02 22:12:24,849 INFO L226 Difference]: Without dead ends: 2571 [2021-11-02 22:12:24,850 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:12:24,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2021-11-02 22:12:24,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 2571. [2021-11-02 22:12:24,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2571 states, 1917 states have (on average 1.881585811163276) internal successors, (3607), 2543 states have internal predecessors, (3607), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-02 22:12:24,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 3666 transitions. [2021-11-02 22:12:24,908 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 3666 transitions. Word has length 70 [2021-11-02 22:12:24,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:24,910 INFO L470 AbstractCegarLoop]: Abstraction has 2571 states and 3666 transitions. [2021-11-02 22:12:24,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:12:24,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 3666 transitions. [2021-11-02 22:12:24,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 22:12:24,911 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:24,911 INFO L513 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:12:24,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-02 22:12:25,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:12:25,117 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-02 22:12:25,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:25,118 INFO L85 PathProgramCache]: Analyzing trace with hash -208281762, now seen corresponding path program 1 times [2021-11-02 22:12:25,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:12:25,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718272564] [2021-11-02 22:12:25,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:25,119 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:12:25,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:12:25,119 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:12:25,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-02 22:12:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:25,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:12:25,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:25,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:12:25,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:12:26,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:12:26,258 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:12:26,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718272564] [2021-11-02 22:12:26,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718272564] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:12:26,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:12:26,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-02 22:12:26,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644666533] [2021-11-02 22:12:26,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:12:26,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:12:26,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:12:26,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:12:26,260 INFO L87 Difference]: Start difference. First operand 2571 states and 3666 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:12:26,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:26,835 INFO L93 Difference]: Finished difference Result 2585 states and 3694 transitions. [2021-11-02 22:12:26,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 22:12:26,836 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 72 [2021-11-02 22:12:26,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:26,844 INFO L225 Difference]: With dead ends: 2585 [2021-11-02 22:12:26,844 INFO L226 Difference]: Without dead ends: 2581 [2021-11-02 22:12:26,845 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:12:26,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2021-11-02 22:12:26,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 2577. [2021-11-02 22:12:26,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2577 states, 1923 states have (on average 1.8798751950078003) internal successors, (3615), 2549 states have internal predecessors, (3615), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-02 22:12:26,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 3674 transitions. [2021-11-02 22:12:26,898 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 3674 transitions. Word has length 72 [2021-11-02 22:12:26,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:26,899 INFO L470 AbstractCegarLoop]: Abstraction has 2577 states and 3674 transitions. [2021-11-02 22:12:26,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:12:26,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 3674 transitions. [2021-11-02 22:12:26,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 22:12:26,900 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:26,900 INFO L513 BasicCegarLoop]: trace histogram [6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:12:26,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-02 22:12:27,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:12:27,114 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-02 22:12:27,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:27,115 INFO L85 PathProgramCache]: Analyzing trace with hash 464772958, now seen corresponding path program 2 times [2021-11-02 22:12:27,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:12:27,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064515063] [2021-11-02 22:12:27,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:12:27,116 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:12:27,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:12:27,117 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:12:27,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-02 22:12:27,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:12:27,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:12:28,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:12:28,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:28,300 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:12:28,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:12:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:12:28,931 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:12:28,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064515063] [2021-11-02 22:12:28,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064515063] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:12:28,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:12:28,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-02 22:12:28,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550070101] [2021-11-02 22:12:28,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:12:28,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:12:28,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:12:28,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:12:28,933 INFO L87 Difference]: Start difference. First operand 2577 states and 3674 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:12:31,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:31,024 INFO L93 Difference]: Finished difference Result 2605 states and 3742 transitions. [2021-11-02 22:12:31,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 22:12:31,025 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2021-11-02 22:12:31,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:31,034 INFO L225 Difference]: With dead ends: 2605 [2021-11-02 22:12:31,034 INFO L226 Difference]: Without dead ends: 2601 [2021-11-02 22:12:31,035 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 22:12:31,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2601 states. [2021-11-02 22:12:31,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2601 to 2589. [2021-11-02 22:12:31,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2589 states, 1935 states have (on average 1.8764857881136952) internal successors, (3631), 2561 states have internal predecessors, (3631), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-02 22:12:31,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 3690 transitions. [2021-11-02 22:12:31,093 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 3690 transitions. Word has length 76 [2021-11-02 22:12:31,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:31,094 INFO L470 AbstractCegarLoop]: Abstraction has 2589 states and 3690 transitions. [2021-11-02 22:12:31,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:12:31,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 3690 transitions. [2021-11-02 22:12:31,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 22:12:31,095 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:31,095 INFO L513 BasicCegarLoop]: trace histogram [14, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:12:31,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-02 22:12:31,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:12:31,314 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-02 22:12:31,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:31,315 INFO L85 PathProgramCache]: Analyzing trace with hash 787472222, now seen corresponding path program 3 times [2021-11-02 22:12:31,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:12:31,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116004947] [2021-11-02 22:12:31,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:12:31,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:12:31,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:12:31,317 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:12:31,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-02 22:12:32,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-02 22:12:32,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:12:32,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 22:12:32,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:33,335 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:12:33,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:12:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:12:35,222 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:12:35,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116004947] [2021-11-02 22:12:35,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116004947] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:12:35,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:12:35,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-02 22:12:35,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960716445] [2021-11-02 22:12:35,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-02 22:12:35,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:12:35,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-02 22:12:35,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 22:12:35,225 INFO L87 Difference]: Start difference. First operand 2589 states and 3690 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:12:44,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:44,873 INFO L93 Difference]: Finished difference Result 2645 states and 3838 transitions. [2021-11-02 22:12:44,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-02 22:12:44,875 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 84 [2021-11-02 22:12:44,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:44,884 INFO L225 Difference]: With dead ends: 2645 [2021-11-02 22:12:44,884 INFO L226 Difference]: Without dead ends: 2641 [2021-11-02 22:12:44,887 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1817, Invalid=4189, Unknown=0, NotChecked=0, Total=6006 [2021-11-02 22:12:44,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2021-11-02 22:12:44,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 2613. [2021-11-02 22:12:44,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2613 states, 1959 states have (on average 1.8698315467075037) internal successors, (3663), 2585 states have internal predecessors, (3663), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-02 22:12:44,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3722 transitions. [2021-11-02 22:12:44,968 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3722 transitions. Word has length 84 [2021-11-02 22:12:44,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:44,968 INFO L470 AbstractCegarLoop]: Abstraction has 2613 states and 3722 transitions. [2021-11-02 22:12:44,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:12:44,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3722 transitions. [2021-11-02 22:12:44,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 22:12:44,969 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:44,969 INFO L513 BasicCegarLoop]: trace histogram [30, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:12:44,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-02 22:12:45,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:12:45,170 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-02 22:12:45,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:45,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1634197342, now seen corresponding path program 4 times [2021-11-02 22:12:45,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:12:45,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784474269] [2021-11-02 22:12:45,172 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:12:45,172 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:12:45,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:12:45,174 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:12:45,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-02 22:12:46,008 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:12:46,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:12:46,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-02 22:12:46,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:12:47,446 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:12:47,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:12:52,859 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:12:52,859 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:12:52,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784474269] [2021-11-02 22:12:52,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784474269] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:12:52,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:12:52,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-02 22:12:52,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802709816] [2021-11-02 22:12:52,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-02 22:12:52,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:12:52,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-02 22:12:52,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-02 22:12:52,863 INFO L87 Difference]: Start difference. First operand 2613 states and 3722 transitions. Second operand has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:13:13,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:13:13,926 INFO L93 Difference]: Finished difference Result 2707 states and 3994 transitions. [2021-11-02 22:13:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-11-02 22:13:13,927 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 100 [2021-11-02 22:13:13,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:13:13,935 INFO L225 Difference]: With dead ends: 2707 [2021-11-02 22:13:13,935 INFO L226 Difference]: Without dead ends: 2703 [2021-11-02 22:13:13,941 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2373 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=4552, Invalid=14908, Unknown=0, NotChecked=0, Total=19460 [2021-11-02 22:13:13,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2703 states. [2021-11-02 22:13:13,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2703 to 2643. [2021-11-02 22:13:13,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2643 states, 1989 states have (on average 1.864756158873806) internal successors, (3709), 2615 states have internal predecessors, (3709), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (32), 22 states have call predecessors, (32), 26 states have call successors, (32) [2021-11-02 22:13:14,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2643 states to 2643 states and 3768 transitions. [2021-11-02 22:13:14,001 INFO L78 Accepts]: Start accepts. Automaton has 2643 states and 3768 transitions. Word has length 100 [2021-11-02 22:13:14,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:13:14,002 INFO L470 AbstractCegarLoop]: Abstraction has 2643 states and 3768 transitions. [2021-11-02 22:13:14,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:13:14,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2643 states and 3768 transitions. [2021-11-02 22:13:14,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-02 22:13:14,003 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:13:14,003 INFO L513 BasicCegarLoop]: trace histogram [44, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:13:14,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-02 22:13:14,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:13:14,218 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-02 22:13:14,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:13:14,218 INFO L85 PathProgramCache]: Analyzing trace with hash -894378146, now seen corresponding path program 5 times [2021-11-02 22:13:14,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:13:14,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772401242] [2021-11-02 22:13:14,219 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:13:14,219 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:13:14,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:13:14,221 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:13:14,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_550d25c6-6ced-40e0-9ae3-272e8c60fe74/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-02 22:13:15,955 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-02 22:13:15,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:13:15,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-02 22:13:15,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:13:16,003 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 22:13:16,240 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-02 22:13:16,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-02 22:13:16,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-02 22:13:16,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32