./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y --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 89806bf5e92e08240ee093afcceea93b900865db28253b34ac5f2402fc0c0eb8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:32:47,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:32:47,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:32:47,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:32:47,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:32:47,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:32:47,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:32:47,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:32:47,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:32:47,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:32:47,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:32:47,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:32:47,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:32:47,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:32:47,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:32:47,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:32:47,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:32:47,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:32:47,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:32:47,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:32:47,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:32:47,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:32:47,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:32:47,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:32:47,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:32:47,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:32:47,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:32:47,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:32:47,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:32:47,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:32:47,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:32:47,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:32:47,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:32:47,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:32:47,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:32:47,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:32:47,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:32:47,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:32:47,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:32:47,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:32:47,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:32:47,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 17:32:47,673 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:32:47,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:32:47,674 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:32:47,674 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:32:47,678 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:32:47,678 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:32:47,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:32:47,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:32:47,679 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:32:47,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:32:47,680 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:32:47,680 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:32:47,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:32:47,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:32:47,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:32:47,681 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:32:47,681 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:32:47,681 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:32:47,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:32:47,681 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:32:47,682 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:32:47,682 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:32:47,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:32:47,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:32:47,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:32:47,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:32:47,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:32:47,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:32:47,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:32:47,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:32:47,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:32:47,684 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_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89806bf5e92e08240ee093afcceea93b900865db28253b34ac5f2402fc0c0eb8 [2021-11-13 17:32:47,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:32:47,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:32:47,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:32:47,975 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:32:47,975 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:32:47,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i [2021-11-13 17:32:48,046 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/data/32b792ebb/753473153179485e881f9a303b0a1158/FLAG86b31e5ff [2021-11-13 17:32:48,657 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:32:48,661 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i [2021-11-13 17:32:48,693 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/data/32b792ebb/753473153179485e881f9a303b0a1158/FLAG86b31e5ff [2021-11-13 17:32:48,862 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/data/32b792ebb/753473153179485e881f9a303b0a1158 [2021-11-13 17:32:48,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:32:48,866 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:32:48,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:32:48,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:32:48,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:32:48,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:32:48" (1/1) ... [2021-11-13 17:32:48,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b5c5aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:48, skipping insertion in model container [2021-11-13 17:32:48,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:32:48" (1/1) ... [2021-11-13 17:32:48,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:32:48,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:32:49,351 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_44bea3a1-5863-4354-8f4e-d6a90011aece/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[33021,33034] [2021-11-13 17:32:49,448 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_44bea3a1-5863-4354-8f4e-d6a90011aece/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[44124,44137] [2021-11-13 17:32:49,449 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_44bea3a1-5863-4354-8f4e-d6a90011aece/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[44245,44258] [2021-11-13 17:32:49,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:32:49,476 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) [2021-11-13 17:32:49,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7d3c9d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:49, skipping insertion in model container [2021-11-13 17:32:49,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:32:49,477 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-13 17:32:49,479 INFO L158 Benchmark]: Toolchain (without parser) took 612.11ms. Allocated memory is still 96.5MB. Free memory was 53.6MB in the beginning and 63.3MB in the end (delta: -9.7MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2021-11-13 17:32:49,480 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 96.5MB. Free memory was 72.6MB in the beginning and 72.6MB in the end (delta: 49.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:32:49,481 INFO L158 Benchmark]: CACSL2BoogieTranslator took 609.45ms. Allocated memory is still 96.5MB. Free memory was 53.4MB in the beginning and 63.3MB in the end (delta: -9.9MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2021-11-13 17:32:49,483 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 96.5MB. Free memory was 72.6MB in the beginning and 72.6MB in the end (delta: 49.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 609.45ms. Allocated memory is still 96.5MB. Free memory was 53.4MB in the beginning and 63.3MB in the end (delta: -9.9MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: 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_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y --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 89806bf5e92e08240ee093afcceea93b900865db28253b34ac5f2402fc0c0eb8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:32:51,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:32:51,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:32:51,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:32:51,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:32:51,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:32:51,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:32:51,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:32:51,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:32:51,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:32:51,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:32:51,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:32:51,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:32:51,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:32:51,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:32:51,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:32:51,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:32:51,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:32:51,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:32:51,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:32:51,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:32:51,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:32:51,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:32:51,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:32:51,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:32:51,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:32:51,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:32:51,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:32:51,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:32:51,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:32:51,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:32:51,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:32:51,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:32:51,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:32:51,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:32:51,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:32:51,884 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:32:51,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:32:51,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:32:51,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:32:51,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:32:51,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 17:32:51,930 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:32:51,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:32:51,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:32:51,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:32:51,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:32:51,933 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:32:51,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:32:51,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:32:51,935 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:32:51,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:32:51,937 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:32:51,937 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:32:51,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:32:51,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:32:51,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:32:51,938 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:32:51,938 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:32:51,939 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:32:51,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:32:51,939 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:32:51,939 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 17:32:51,940 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 17:32:51,940 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:32:51,940 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:32:51,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:32:51,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:32:51,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:32:51,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:32:51,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:32:51,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:32:51,942 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 17:32:51,942 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 17:32:51,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:32:51,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 17:32:51,943 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_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89806bf5e92e08240ee093afcceea93b900865db28253b34ac5f2402fc0c0eb8 [2021-11-13 17:32:52,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:32:52,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:32:52,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:32:52,364 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:32:52,365 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:32:52,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i [2021-11-13 17:32:52,449 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/data/a5192a431/691565337fa94630b1c3cc5d5c0d4f21/FLAGd8ad23e82 [2021-11-13 17:32:53,185 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:32:53,185 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i [2021-11-13 17:32:53,207 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/data/a5192a431/691565337fa94630b1c3cc5d5c0d4f21/FLAGd8ad23e82 [2021-11-13 17:32:53,389 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/data/a5192a431/691565337fa94630b1c3cc5d5c0d4f21 [2021-11-13 17:32:53,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:32:53,393 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:32:53,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:32:53,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:32:53,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:32:53,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:32:53" (1/1) ... [2021-11-13 17:32:53,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dbae34b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:53, skipping insertion in model container [2021-11-13 17:32:53,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:32:53" (1/1) ... [2021-11-13 17:32:53,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:32:53,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:32:53,962 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_44bea3a1-5863-4354-8f4e-d6a90011aece/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[33021,33034] [2021-11-13 17:32:54,161 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_44bea3a1-5863-4354-8f4e-d6a90011aece/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[44124,44137] [2021-11-13 17:32:54,163 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_44bea3a1-5863-4354-8f4e-d6a90011aece/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[44245,44258] [2021-11-13 17:32:54,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:32:54,195 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 17:32:54,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:32:54,252 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_44bea3a1-5863-4354-8f4e-d6a90011aece/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[33021,33034] [2021-11-13 17:32:54,364 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_44bea3a1-5863-4354-8f4e-d6a90011aece/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[44124,44137] [2021-11-13 17:32:54,372 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_44bea3a1-5863-4354-8f4e-d6a90011aece/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[44245,44258] [2021-11-13 17:32:54,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:32:54,383 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:32:54,421 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_44bea3a1-5863-4354-8f4e-d6a90011aece/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[33021,33034] [2021-11-13 17:32:54,480 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_44bea3a1-5863-4354-8f4e-d6a90011aece/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[44124,44137] [2021-11-13 17:32:54,486 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_44bea3a1-5863-4354-8f4e-d6a90011aece/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-1.i[44245,44258] [2021-11-13 17:32:54,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:32:54,544 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:32:54,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:54 WrapperNode [2021-11-13 17:32:54,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:32:54,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:32:54,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:32:54,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:32:54,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:54" (1/1) ... [2021-11-13 17:32:54,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:54" (1/1) ... [2021-11-13 17:32:54,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:54" (1/1) ... [2021-11-13 17:32:54,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:54" (1/1) ... [2021-11-13 17:32:54,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:54" (1/1) ... [2021-11-13 17:32:54,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:54" (1/1) ... [2021-11-13 17:32:54,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:54" (1/1) ... [2021-11-13 17:32:54,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:32:54,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:32:54,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:32:54,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:32:54,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:54" (1/1) ... [2021-11-13 17:32:54,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:32:54,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:32:54,834 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:32:54,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:32:54,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 17:32:54,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:32:54,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:32:54,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 17:32:54,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 17:32:54,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 17:32:54,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 17:32:54,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 17:32:54,888 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 17:32:54,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 17:32:54,889 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 17:32:54,889 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 17:32:54,889 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-13 17:32:54,889 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-13 17:32:54,889 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-13 17:32:54,889 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-13 17:32:54,889 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 17:32:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-13 17:32:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-13 17:32:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-13 17:32:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-13 17:32:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-13 17:32:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-13 17:32:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-13 17:32:54,891 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-13 17:32:54,891 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-13 17:32:54,891 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-13 17:32:54,891 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-13 17:32:54,892 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-13 17:32:54,892 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-13 17:32:54,892 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-13 17:32:54,893 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-13 17:32:54,893 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-13 17:32:54,893 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-13 17:32:54,893 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-13 17:32:54,893 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-13 17:32:54,893 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-13 17:32:54,893 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-13 17:32:54,894 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-13 17:32:54,894 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-13 17:32:54,894 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-13 17:32:54,894 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-13 17:32:54,894 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-13 17:32:54,895 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-13 17:32:54,895 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-13 17:32:54,895 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-13 17:32:54,895 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-13 17:32:54,895 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-13 17:32:54,896 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-13 17:32:54,896 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-13 17:32:54,896 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-13 17:32:54,897 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-13 17:32:54,897 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-13 17:32:54,898 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-13 17:32:54,899 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-13 17:32:54,899 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-13 17:32:54,899 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-13 17:32:54,899 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-13 17:32:54,900 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-13 17:32:54,900 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-13 17:32:54,900 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-13 17:32:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-13 17:32:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-13 17:32:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 17:32:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 17:32:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 17:32:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 17:32:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 17:32:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 17:32:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 17:32:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 17:32:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 17:32:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 17:32:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 17:32:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 17:32:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 17:32:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 17:32:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 17:32:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 17:32:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 17:32:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 17:32:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 17:32:54,904 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 17:32:54,904 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 17:32:54,904 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 17:32:54,904 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 17:32:54,904 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 17:32:54,905 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 17:32:54,905 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 17:32:54,905 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 17:32:54,905 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 17:32:54,905 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 17:32:54,905 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 17:32:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 17:32:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 17:32:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 17:32:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 17:32:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 17:32:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 17:32:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 17:32:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 17:32:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 17:32:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 17:32:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 17:32:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 17:32:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 17:32:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 17:32:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 17:32:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 17:32:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 17:32:54,909 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 17:32:54,909 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 17:32:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 17:32:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 17:32:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 17:32:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 17:32:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 17:32:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 17:32:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 17:32:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 17:32:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 17:32:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 17:32:54,921 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 17:32:54,921 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 17:32:54,921 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 17:32:54,922 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 17:32:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 17:32:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 17:32:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 17:32:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 17:32:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 17:32:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 17:32:54,923 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 17:32:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 17:32:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 17:32:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 17:32:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 17:32:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 17:32:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 17:32:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 17:32:54,924 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 17:32:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 17:32:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 17:32:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 17:32:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 17:32:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 17:32:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 17:32:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 17:32:54,925 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 17:32:54,926 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 17:32:54,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 17:32:54,926 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 17:32:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 17:32:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 17:32:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 17:32:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 17:32:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 17:32:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 17:32:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 17:32:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 17:32:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 17:32:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 17:32:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 17:32:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 17:32:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 17:32:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 17:32:54,928 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 17:32:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 17:32:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 17:32:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 17:32:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 17:32:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 17:32:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 17:32:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 17:32:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:32:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 17:32:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 17:32:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:32:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 17:32:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 17:32:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 17:32:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:32:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:32:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 17:32:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:32:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 17:32:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 17:32:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:32:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:32:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 17:32:55,548 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 17:33:00,195 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:33:00,195 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-13 17:33:00,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:33:00 BoogieIcfgContainer [2021-11-13 17:33:00,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:33:00,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:33:00,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:33:00,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:33:00,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:32:53" (1/3) ... [2021-11-13 17:33:00,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50fd2bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:33:00, skipping insertion in model container [2021-11-13 17:33:00,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:54" (2/3) ... [2021-11-13 17:33:00,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50fd2bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:33:00, skipping insertion in model container [2021-11-13 17:33:00,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:33:00" (3/3) ... [2021-11-13 17:33:00,207 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test7-1.i [2021-11-13 17:33:00,212 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:33:00,213 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 531 error locations. [2021-11-13 17:33:00,258 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:33:00,265 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 [2021-11-13 17:33:00,265 INFO L340 AbstractCegarLoop]: Starting to check reachability of 531 error locations. [2021-11-13 17:33:00,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 1055 states, 519 states have (on average 2.2524084778420037) internal successors, (1169), 1046 states have internal predecessors, (1169), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-13 17:33:00,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 17:33:00,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:00,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:00,307 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-13 17:33:00,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:00,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1952023556, now seen corresponding path program 1 times [2021-11-13 17:33:00,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:33:00,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150771103] [2021-11-13 17:33:00,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:00,325 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:33:00,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:33:00,329 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:33:00,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 17:33:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:00,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:33:00,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:00,713 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 [2021-11-13 17:33:00,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:00,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:33:00,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:00,777 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:33:00,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150771103] [2021-11-13 17:33:00,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150771103] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:00,778 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:00,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 17:33:00,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055470255] [2021-11-13 17:33:00,781 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:00,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:33:00,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:33:00,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:33:00,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:33:00,816 INFO L87 Difference]: Start difference. First operand has 1055 states, 519 states have (on average 2.2524084778420037) internal successors, (1169), 1046 states have internal predecessors, (1169), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-13 17:33:02,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:02,813 INFO L93 Difference]: Finished difference Result 1046 states and 1101 transitions. [2021-11-13 17:33:02,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:33:02,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 7 [2021-11-13 17:33:02,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:02,847 INFO L225 Difference]: With dead ends: 1046 [2021-11-13 17:33:02,848 INFO L226 Difference]: Without dead ends: 1043 [2021-11-13 17:33:02,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:33:02,853 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 969 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1545.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.22ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1875.96ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:02,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 680 Invalid, 552 Unknown, 0 Unchecked, 17.22ms Time], IncrementalHoareTripleChecker [16 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 1875.96ms Time] [2021-11-13 17:33:02,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-11-13 17:33:02,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1035. [2021-11-13 17:33:02,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 517 states have (on average 2.09284332688588) internal successors, (1082), 1027 states have internal predecessors, (1082), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:33:02,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1091 transitions. [2021-11-13 17:33:02,949 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1091 transitions. Word has length 7 [2021-11-13 17:33:02,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:02,950 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 1091 transitions. [2021-11-13 17:33:02,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-13 17:33:02,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1091 transitions. [2021-11-13 17:33:02,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 17:33:02,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:02,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:02,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:03,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:33:03,158 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-13 17:33:03,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:03,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1952023557, now seen corresponding path program 1 times [2021-11-13 17:33:03,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:33:03,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572531152] [2021-11-13 17:33:03,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:03,160 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:33:03,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:33:03,162 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:33:03,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 17:33:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:03,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:33:03,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:03,368 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 [2021-11-13 17:33:03,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:03,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:33:03,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:03,443 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:33:03,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572531152] [2021-11-13 17:33:03,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572531152] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:03,444 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:03,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 17:33:03,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626873209] [2021-11-13 17:33:03,444 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:03,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:33:03,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:33:03,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:33:03,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:33:03,446 INFO L87 Difference]: Start difference. First operand 1035 states and 1091 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2021-11-13 17:33:08,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:08,405 INFO L93 Difference]: Finished difference Result 1500 states and 1588 transitions. [2021-11-13 17:33:08,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:33:08,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 7 [2021-11-13 17:33:08,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:08,414 INFO L225 Difference]: With dead ends: 1500 [2021-11-13 17:33:08,414 INFO L226 Difference]: Without dead ends: 1500 [2021-11-13 17:33:08,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:33:08,416 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 1125 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4245.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.47ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4868.80ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:08,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1125 Valid, 1544 Invalid, 1075 Unknown, 0 Unchecked, 20.47ms Time], IncrementalHoareTripleChecker [18 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 4868.80ms Time] [2021-11-13 17:33:08,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2021-11-13 17:33:08,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1070. [2021-11-13 17:33:08,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 561 states have (on average 2.06951871657754) internal successors, (1161), 1062 states have internal predecessors, (1161), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:33:08,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1170 transitions. [2021-11-13 17:33:08,454 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1170 transitions. Word has length 7 [2021-11-13 17:33:08,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:08,455 INFO L470 AbstractCegarLoop]: Abstraction has 1070 states and 1170 transitions. [2021-11-13 17:33:08,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2021-11-13 17:33:08,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1170 transitions. [2021-11-13 17:33:08,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 17:33:08,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:08,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:08,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:08,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:33:08,678 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-13 17:33:08,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:08,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1548729403, now seen corresponding path program 1 times [2021-11-13 17:33:08,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:33:08,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589658816] [2021-11-13 17:33:08,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:08,680 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:33:08,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:33:08,681 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:33:08,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 17:33:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:08,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:33:08,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:08,898 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 [2021-11-13 17:33:08,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:08,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:33:08,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:08,957 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:33:08,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589658816] [2021-11-13 17:33:08,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589658816] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:08,958 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:08,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 17:33:08,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855453960] [2021-11-13 17:33:08,958 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:08,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:33:08,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:33:08,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:33:08,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:33:08,960 INFO L87 Difference]: Start difference. First operand 1070 states and 1170 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2021-11-13 17:33:10,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:10,954 INFO L93 Difference]: Finished difference Result 1400 states and 1525 transitions. [2021-11-13 17:33:10,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:33:10,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 12 [2021-11-13 17:33:10,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:10,965 INFO L225 Difference]: With dead ends: 1400 [2021-11-13 17:33:10,965 INFO L226 Difference]: Without dead ends: 1400 [2021-11-13 17:33:10,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:33:10,967 INFO L933 BasicCegarLoop]: 929 mSDtfsCounter, 975 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1587.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.05ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1938.32ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:10,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 1176 Invalid, 759 Unknown, 0 Unchecked, 13.05ms Time], IncrementalHoareTripleChecker [51 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 1938.32ms Time] [2021-11-13 17:33:10,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-11-13 17:33:10,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1023. [2021-11-13 17:33:10,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 561 states have (on average 1.9803921568627452) internal successors, (1111), 1015 states have internal predecessors, (1111), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:33:11,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1120 transitions. [2021-11-13 17:33:11,014 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1120 transitions. Word has length 12 [2021-11-13 17:33:11,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:11,015 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 1120 transitions. [2021-11-13 17:33:11,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2021-11-13 17:33:11,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1120 transitions. [2021-11-13 17:33:11,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 17:33:11,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:11,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:11,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:11,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:33:11,230 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-13 17:33:11,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:11,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1548729402, now seen corresponding path program 1 times [2021-11-13 17:33:11,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:33:11,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123068158] [2021-11-13 17:33:11,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:11,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:33:11,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:33:11,233 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:33:11,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 17:33:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:11,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:33:11,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:11,448 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 [2021-11-13 17:33:11,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:11,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:33:11,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:11,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:33:11,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123068158] [2021-11-13 17:33:11,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123068158] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:11,583 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:11,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 17:33:11,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942189917] [2021-11-13 17:33:11,584 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:11,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:33:11,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:33:11,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:33:11,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:33:11,585 INFO L87 Difference]: Start difference. First operand 1023 states and 1120 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-11-13 17:33:15,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:15,835 INFO L93 Difference]: Finished difference Result 1444 states and 1533 transitions. [2021-11-13 17:33:15,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:33:15,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 12 [2021-11-13 17:33:15,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:15,843 INFO L225 Difference]: With dead ends: 1444 [2021-11-13 17:33:15,843 INFO L226 Difference]: Without dead ends: 1444 [2021-11-13 17:33:15,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:33:15,844 INFO L933 BasicCegarLoop]: 1103 mSDtfsCounter, 1392 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3692.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.10ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4191.32ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:15,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1393 Valid, 1519 Invalid, 772 Unknown, 0 Unchecked, 14.10ms Time], IncrementalHoareTripleChecker [14 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 4191.32ms Time] [2021-11-13 17:33:15,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2021-11-13 17:33:15,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1013. [2021-11-13 17:33:15,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 561 states have (on average 1.9572192513368984) internal successors, (1098), 1005 states have internal predecessors, (1098), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:33:15,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1107 transitions. [2021-11-13 17:33:15,874 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1107 transitions. Word has length 12 [2021-11-13 17:33:15,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:15,874 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1107 transitions. [2021-11-13 17:33:15,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-11-13 17:33:15,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1107 transitions. [2021-11-13 17:33:15,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 17:33:15,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:15,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:15,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:16,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:33:16,086 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr526ASSERT_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-13 17:33:16,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:16,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1839245231, now seen corresponding path program 1 times [2021-11-13 17:33:16,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:33:16,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559696687] [2021-11-13 17:33:16,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:16,087 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:33:16,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:33:16,088 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:33:16,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 17:33:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:16,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:33:16,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:16,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:33:16,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:16,415 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:33:16,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559696687] [2021-11-13 17:33:16,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559696687] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:16,416 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:16,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:33:16,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664568509] [2021-11-13 17:33:16,416 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:16,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:33:16,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:33:16,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:33:16,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:33:16,418 INFO L87 Difference]: Start difference. First operand 1013 states and 1107 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-13 17:33:17,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:17,080 INFO L93 Difference]: Finished difference Result 1460 states and 1586 transitions. [2021-11-13 17:33:17,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:33:17,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 [2021-11-13 17:33:17,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:17,089 INFO L225 Difference]: With dead ends: 1460 [2021-11-13 17:33:17,089 INFO L226 Difference]: Without dead ends: 1460 [2021-11-13 17:33:17,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:33:17,090 INFO L933 BasicCegarLoop]: 1086 mSDtfsCounter, 548 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 525.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.36ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 628.63ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:17,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 2943 Invalid, 247 Unknown, 0 Unchecked, 6.36ms Time], IncrementalHoareTripleChecker [7 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 628.63ms Time] [2021-11-13 17:33:17,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-11-13 17:33:17,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1250. [2021-11-13 17:33:17,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 798 states have (on average 1.9411027568922306) internal successors, (1549), 1242 states have internal predecessors, (1549), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:33:17,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1558 transitions. [2021-11-13 17:33:17,124 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1558 transitions. Word has length 15 [2021-11-13 17:33:17,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:17,124 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 1558 transitions. [2021-11-13 17:33:17,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-13 17:33:17,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1558 transitions. [2021-11-13 17:33:17,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-13 17:33:17,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:17,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:17,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:17,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:33:17,337 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr529ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-13 17:33:17,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:17,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1182027384, now seen corresponding path program 1 times [2021-11-13 17:33:17,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:33:17,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175969198] [2021-11-13 17:33:17,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:17,339 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:33:17,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:33:17,340 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:33:17,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 17:33:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:17,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:33:17,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:17,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 17:33:17,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 17:33:17,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 17:33:17,649 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 17:33:17,649 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-13 17:33:17,711 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-13 17:33:17,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-13 17:33:17,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:17,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:33:17,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:17,811 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:33:17,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175969198] [2021-11-13 17:33:17,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175969198] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:17,812 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:17,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 17:33:17,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22802584] [2021-11-13 17:33:17,812 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:17,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:33:17,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:33:17,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:33:17,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:33:17,813 INFO L87 Difference]: Start difference. First operand 1250 states and 1558 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-11-13 17:33:19,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:19,220 INFO L93 Difference]: Finished difference Result 1606 states and 1973 transitions. [2021-11-13 17:33:19,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:33:19,220 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2021-11-13 17:33:19,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:19,228 INFO L225 Difference]: With dead ends: 1606 [2021-11-13 17:33:19,236 INFO L226 Difference]: Without dead ends: 1606 [2021-11-13 17:33:19,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:33:19,237 INFO L933 BasicCegarLoop]: 971 mSDtfsCounter, 708 mSDsluCounter, 2804 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1168.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 3775 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.62ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1348.80ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:19,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 3775 Invalid, 303 Unknown, 0 Unchecked, 7.62ms Time], IncrementalHoareTripleChecker [4 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 1348.80ms Time] [2021-11-13 17:33:19,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-11-13 17:33:19,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1249. [2021-11-13 17:33:19,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 797 states have (on average 1.9410288582183186) internal successors, (1547), 1241 states have internal predecessors, (1547), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:33:19,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1556 transitions. [2021-11-13 17:33:19,271 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1556 transitions. Word has length 16 [2021-11-13 17:33:19,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:19,271 INFO L470 AbstractCegarLoop]: Abstraction has 1249 states and 1556 transitions. [2021-11-13 17:33:19,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-11-13 17:33:19,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1556 transitions. [2021-11-13 17:33:19,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 17:33:19,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:19,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:19,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:19,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:33:19,484 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-13 17:33:19,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:19,485 INFO L85 PathProgramCache]: Analyzing trace with hash 109421681, now seen corresponding path program 1 times [2021-11-13 17:33:19,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:33:19,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898617243] [2021-11-13 17:33:19,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:19,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:33:19,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:33:19,486 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:33:19,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 17:33:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:19,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:33:19,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:19,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:19,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:33:19,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:19,762 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:33:19,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898617243] [2021-11-13 17:33:19,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898617243] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:19,763 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:19,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:33:19,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995784795] [2021-11-13 17:33:19,763 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:19,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:33:19,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:33:19,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:33:19,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:33:19,764 INFO L87 Difference]: Start difference. First operand 1249 states and 1556 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-11-13 17:33:19,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:19,790 INFO L93 Difference]: Finished difference Result 1189 states and 1470 transitions. [2021-11-13 17:33:19,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:33:19,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 22 [2021-11-13 17:33:19,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:19,796 INFO L225 Difference]: With dead ends: 1189 [2021-11-13 17:33:19,797 INFO L226 Difference]: Without dead ends: 1189 [2021-11-13 17:33:19,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:33:19,798 INFO L933 BasicCegarLoop]: 977 mSDtfsCounter, 1914 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1917 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.50ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.87ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:19,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1917 Valid, 1004 Invalid, 15 Unknown, 0 Unchecked, 1.50ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 16.87ms Time] [2021-11-13 17:33:19,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2021-11-13 17:33:19,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1189. [2021-11-13 17:33:19,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 761 states have (on average 1.9198423127463864) internal successors, (1461), 1181 states have internal predecessors, (1461), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:33:19,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1470 transitions. [2021-11-13 17:33:19,828 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1470 transitions. Word has length 22 [2021-11-13 17:33:19,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:19,828 INFO L470 AbstractCegarLoop]: Abstraction has 1189 states and 1470 transitions. [2021-11-13 17:33:19,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-11-13 17:33:19,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1470 transitions. [2021-11-13 17:33:19,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 17:33:19,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:19,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:19,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:20,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:33:20,042 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-13 17:33:20,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:20,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2075018155, now seen corresponding path program 1 times [2021-11-13 17:33:20,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:33:20,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500164574] [2021-11-13 17:33:20,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:20,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:33:20,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:33:20,044 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:33:20,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 17:33:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:33:20,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:20,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:33:20,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:20,328 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:33:20,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500164574] [2021-11-13 17:33:20,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500164574] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:20,328 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:20,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 17:33:20,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692229526] [2021-11-13 17:33:20,329 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:20,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:33:20,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:33:20,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:33:20,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:33:20,330 INFO L87 Difference]: Start difference. First operand 1189 states and 1470 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-13 17:33:20,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:20,424 INFO L93 Difference]: Finished difference Result 1161 states and 1414 transitions. [2021-11-13 17:33:20,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:33:20,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 24 [2021-11-13 17:33:20,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:20,431 INFO L225 Difference]: With dead ends: 1161 [2021-11-13 17:33:20,431 INFO L226 Difference]: Without dead ends: 1161 [2021-11-13 17:33:20,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:33:20,432 INFO L933 BasicCegarLoop]: 932 mSDtfsCounter, 1846 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.20ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.96ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:20,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1849 Valid, 1885 Invalid, 77 Unknown, 0 Unchecked, 7.20ms Time], IncrementalHoareTripleChecker [45 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 59.96ms Time] [2021-11-13 17:33:20,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2021-11-13 17:33:20,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1159. [2021-11-13 17:33:20,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 745 states have (on average 1.8832214765100672) internal successors, (1403), 1151 states have internal predecessors, (1403), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:33:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1412 transitions. [2021-11-13 17:33:20,461 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1412 transitions. Word has length 24 [2021-11-13 17:33:20,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:20,461 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 1412 transitions. [2021-11-13 17:33:20,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-11-13 17:33:20,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1412 transitions. [2021-11-13 17:33:20,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 17:33:20,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:20,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:20,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:20,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:33:20,676 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-13 17:33:20,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:20,676 INFO L85 PathProgramCache]: Analyzing trace with hash 755457081, now seen corresponding path program 1 times [2021-11-13 17:33:20,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:33:20,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012115322] [2021-11-13 17:33:20,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:20,677 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:33:20,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:33:20,678 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:33:20,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 17:33:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:20,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:33:20,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:20,871 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 [2021-11-13 17:33:21,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:21,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:33:21,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:21,131 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:33:21,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012115322] [2021-11-13 17:33:21,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012115322] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:21,132 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:21,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:33:21,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627031403] [2021-11-13 17:33:21,133 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:21,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:33:21,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:33:21,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:33:21,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:33:21,134 INFO L87 Difference]: Start difference. First operand 1159 states and 1412 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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) [2021-11-13 17:33:23,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:23,177 INFO L93 Difference]: Finished difference Result 1622 states and 1995 transitions. [2021-11-13 17:33:23,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:33:23,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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 38 [2021-11-13 17:33:23,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:23,185 INFO L225 Difference]: With dead ends: 1622 [2021-11-13 17:33:23,186 INFO L226 Difference]: Without dead ends: 1622 [2021-11-13 17:33:23,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:33:23,187 INFO L933 BasicCegarLoop]: 495 mSDtfsCounter, 1684 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1668.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.40ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2001.39ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:23,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1684 Valid, 1021 Invalid, 933 Unknown, 0 Unchecked, 7.40ms Time], IncrementalHoareTripleChecker [19 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 2001.39ms Time] [2021-11-13 17:33:23,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2021-11-13 17:33:23,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1155. [2021-11-13 17:33:23,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 745 states have (on average 1.8724832214765101) internal successors, (1395), 1147 states have internal predecessors, (1395), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:33:23,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1404 transitions. [2021-11-13 17:33:23,218 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1404 transitions. Word has length 38 [2021-11-13 17:33:23,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:23,218 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 1404 transitions. [2021-11-13 17:33:23,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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) [2021-11-13 17:33:23,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1404 transitions. [2021-11-13 17:33:23,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 17:33:23,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:23,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:23,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:23,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:33:23,432 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-13 17:33:23,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:23,433 INFO L85 PathProgramCache]: Analyzing trace with hash 755457082, now seen corresponding path program 1 times [2021-11-13 17:33:23,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:33:23,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820740021] [2021-11-13 17:33:23,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:23,434 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:33:23,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:33:23,435 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:33:23,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 17:33:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:23,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:33:23,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:23,700 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 [2021-11-13 17:33:23,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:23,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:33:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:24,438 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:33:24,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820740021] [2021-11-13 17:33:24,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820740021] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:24,438 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:24,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:33:24,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428877083] [2021-11-13 17:33:24,439 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:24,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:33:24,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:33:24,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:33:24,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:33:24,440 INFO L87 Difference]: Start difference. First operand 1155 states and 1404 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 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) [2021-11-13 17:33:30,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:30,652 INFO L93 Difference]: Finished difference Result 1755 states and 2150 transitions. [2021-11-13 17:33:30,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:33:30,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 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 38 [2021-11-13 17:33:30,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:30,661 INFO L225 Difference]: With dead ends: 1755 [2021-11-13 17:33:30,661 INFO L226 Difference]: Without dead ends: 1755 [2021-11-13 17:33:30,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:33:30,662 INFO L933 BasicCegarLoop]: 1155 mSDtfsCounter, 2404 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5434.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2404 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.75ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6095.76ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:30,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2404 Valid, 1999 Invalid, 1167 Unknown, 0 Unchecked, 11.75ms Time], IncrementalHoareTripleChecker [11 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 6095.76ms Time] [2021-11-13 17:33:30,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2021-11-13 17:33:30,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1151. [2021-11-13 17:33:30,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 745 states have (on average 1.861744966442953) internal successors, (1387), 1143 states have internal predecessors, (1387), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:33:30,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1396 transitions. [2021-11-13 17:33:30,691 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1396 transitions. Word has length 38 [2021-11-13 17:33:30,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:30,692 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 1396 transitions. [2021-11-13 17:33:30,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 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) [2021-11-13 17:33:30,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1396 transitions. [2021-11-13 17:33:30,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-13 17:33:30,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:30,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:30,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:30,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:33:30,906 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-13 17:33:30,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:30,907 INFO L85 PathProgramCache]: Analyzing trace with hash -81906696, now seen corresponding path program 1 times [2021-11-13 17:33:30,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:33:30,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034174138] [2021-11-13 17:33:30,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:30,909 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:33:30,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:33:30,910 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:33:30,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 17:33:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:31,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:33:31,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:31,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:31,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:33:31,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:31,472 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:33:31,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034174138] [2021-11-13 17:33:31,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034174138] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:31,473 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:31,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:33:31,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077645419] [2021-11-13 17:33:31,473 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:31,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:33:31,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:33:31,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:33:31,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:33:31,475 INFO L87 Difference]: Start difference. First operand 1151 states and 1396 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 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) [2021-11-13 17:33:31,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:31,519 INFO L93 Difference]: Finished difference Result 1139 states and 1376 transitions. [2021-11-13 17:33:31,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:33:31,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 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 56 [2021-11-13 17:33:31,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:31,524 INFO L225 Difference]: With dead ends: 1139 [2021-11-13 17:33:31,525 INFO L226 Difference]: Without dead ends: 1139 [2021-11-13 17:33:31,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:33:31,526 INFO L933 BasicCegarLoop]: 926 mSDtfsCounter, 904 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.73ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.10ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:31,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 1863 Invalid, 41 Unknown, 0 Unchecked, 1.73ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 30.10ms Time] [2021-11-13 17:33:31,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-11-13 17:33:31,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2021-11-13 17:33:31,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 733 states have (on average 1.86493860845839) internal successors, (1367), 1131 states have internal predecessors, (1367), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:33:31,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1376 transitions. [2021-11-13 17:33:31,549 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1376 transitions. Word has length 56 [2021-11-13 17:33:31,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:31,550 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 1376 transitions. [2021-11-13 17:33:31,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 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) [2021-11-13 17:33:31,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1376 transitions. [2021-11-13 17:33:31,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 17:33:31,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:31,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:31,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:31,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:33:31,769 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-13 17:33:31,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:31,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1472971204, now seen corresponding path program 1 times [2021-11-13 17:33:31,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:33:31,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089108234] [2021-11-13 17:33:31,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:31,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:33:31,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:33:31,771 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:33:31,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 17:33:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:32,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:33:32,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:32,132 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 [2021-11-13 17:33:32,141 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 [2021-11-13 17:33:32,846 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 17:33:32,846 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 27 treesize of output 29 [2021-11-13 17:33:32,864 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 17:33:32,865 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 26 treesize of output 22 [2021-11-13 17:33:32,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:32,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:33:37,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:37,997 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:33:37,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089108234] [2021-11-13 17:33:37,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089108234] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:37,998 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:37,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:33:37,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706523329] [2021-11-13 17:33:37,998 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:37,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:33:37,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:33:38,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:33:38,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 17:33:38,000 INFO L87 Difference]: Start difference. First operand 1139 states and 1376 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-11-13 17:33:41,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:41,992 INFO L93 Difference]: Finished difference Result 1593 states and 1921 transitions. [2021-11-13 17:33:41,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:33:41,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 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 64 [2021-11-13 17:33:41,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:41,999 INFO L225 Difference]: With dead ends: 1593 [2021-11-13 17:33:41,999 INFO L226 Difference]: Without dead ends: 1593 [2021-11-13 17:33:41,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 17:33:42,000 INFO L933 BasicCegarLoop]: 648 mSDtfsCounter, 1879 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3380.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1882 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 2109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.71ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1310 IncrementalHoareTripleChecker+Unchecked, 3933.69ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:42,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1882 Valid, 1500 Invalid, 2109 Unknown, 0 Unchecked, 12.71ms Time], IncrementalHoareTripleChecker [38 Valid, 761 Invalid, 0 Unknown, 1310 Unchecked, 3933.69ms Time] [2021-11-13 17:33:42,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2021-11-13 17:33:42,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1109. [2021-11-13 17:33:42,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 735 states have (on average 1.819047619047619) internal successors, (1337), 1101 states have internal predecessors, (1337), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:33:42,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1346 transitions. [2021-11-13 17:33:42,023 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1346 transitions. Word has length 64 [2021-11-13 17:33:42,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:42,024 INFO L470 AbstractCegarLoop]: Abstraction has 1109 states and 1346 transitions. [2021-11-13 17:33:42,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 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) [2021-11-13 17:33:42,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1346 transitions. [2021-11-13 17:33:42,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 17:33:42,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:42,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:42,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:42,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:33:42,240 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr73REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-13 17:33:42,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:42,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1813871547, now seen corresponding path program 1 times [2021-11-13 17:33:42,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:33:42,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801644120] [2021-11-13 17:33:42,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:42,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:33:42,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:33:42,241 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:33:42,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 17:33:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:42,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:33:42,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:42,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:42,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:33:42,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-13 17:33:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:43,098 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:33:43,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801644120] [2021-11-13 17:33:43,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801644120] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:43,099 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:43,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:33:43,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518187526] [2021-11-13 17:33:43,099 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:43,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:33:43,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:33:43,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:33:43,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:33:43,100 INFO L87 Difference]: Start difference. First operand 1109 states and 1346 transitions. Second operand has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 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) [2021-11-13 17:33:44,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:44,839 INFO L93 Difference]: Finished difference Result 1107 states and 1344 transitions. [2021-11-13 17:33:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:33:44,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 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 66 [2021-11-13 17:33:44,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:44,845 INFO L225 Difference]: With dead ends: 1107 [2021-11-13 17:33:44,845 INFO L226 Difference]: Without dead ends: 1107 [2021-11-13 17:33:44,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:33:44,846 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 866 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1448.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.26ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1716.82ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:44,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 549 Invalid, 469 Unknown, 0 Unchecked, 4.26ms Time], IncrementalHoareTripleChecker [9 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 1716.82ms Time] [2021-11-13 17:33:44,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2021-11-13 17:33:44,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1107. [2021-11-13 17:33:44,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 735 states have (on average 1.816326530612245) internal successors, (1335), 1099 states have internal predecessors, (1335), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:33:44,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1344 transitions. [2021-11-13 17:33:44,864 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1344 transitions. Word has length 66 [2021-11-13 17:33:44,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:44,865 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 1344 transitions. [2021-11-13 17:33:44,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 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) [2021-11-13 17:33:44,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1344 transitions. [2021-11-13 17:33:44,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 17:33:44,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:44,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:44,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:45,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:33:45,079 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-13 17:33:45,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:45,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2063415711, now seen corresponding path program 1 times [2021-11-13 17:33:45,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:33:45,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29842074] [2021-11-13 17:33:45,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:45,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:33:45,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:33:45,082 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:33:45,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 17:33:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:45,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:33:45,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:45,443 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 [2021-11-13 17:33:45,459 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 [2021-11-13 17:33:45,497 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 [2021-11-13 17:33:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:45,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:33:45,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:45,670 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:33:45,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29842074] [2021-11-13 17:33:45,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29842074] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:45,671 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:45,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:33:45,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876891215] [2021-11-13 17:33:45,671 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:45,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:33:45,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:33:45,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:33:45,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:33:45,672 INFO L87 Difference]: Start difference. First operand 1107 states and 1344 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 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) [2021-11-13 17:33:48,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:48,343 INFO L93 Difference]: Finished difference Result 1106 states and 1343 transitions. [2021-11-13 17:33:48,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:33:48,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 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 69 [2021-11-13 17:33:48,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:48,348 INFO L225 Difference]: With dead ends: 1106 [2021-11-13 17:33:48,348 INFO L226 Difference]: Without dead ends: 1106 [2021-11-13 17:33:48,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:33:48,348 INFO L933 BasicCegarLoop]: 890 mSDtfsCounter, 4 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2269.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.01ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2617.03ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:48,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2273 Invalid, 1293 Unknown, 0 Unchecked, 6.01ms Time], IncrementalHoareTripleChecker [1 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 2617.03ms Time] [2021-11-13 17:33:48,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2021-11-13 17:33:48,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1106. [2021-11-13 17:33:48,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 735 states have (on average 1.8149659863945578) internal successors, (1334), 1098 states have internal predecessors, (1334), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:33:48,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1343 transitions. [2021-11-13 17:33:48,389 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1343 transitions. Word has length 69 [2021-11-13 17:33:48,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:48,390 INFO L470 AbstractCegarLoop]: Abstraction has 1106 states and 1343 transitions. [2021-11-13 17:33:48,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 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) [2021-11-13 17:33:48,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1343 transitions. [2021-11-13 17:33:48,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 17:33:48,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:48,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:48,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:48,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:33:48,605 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-13 17:33:48,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:48,605 INFO L85 PathProgramCache]: Analyzing trace with hash -2063415710, now seen corresponding path program 1 times [2021-11-13 17:33:48,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:33:48,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715823417] [2021-11-13 17:33:48,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:48,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:33:48,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:33:48,607 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:33:48,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 17:33:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:48,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:33:48,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:48,946 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 [2021-11-13 17:33:48,971 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 [2021-11-13 17:33:48,979 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 [2021-11-13 17:33:49,032 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 [2021-11-13 17:33:49,035 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 [2021-11-13 17:33:49,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:49,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:33:49,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:49,354 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:33:49,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715823417] [2021-11-13 17:33:49,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715823417] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:49,355 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:49,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 17:33:49,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728332199] [2021-11-13 17:33:49,355 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:49,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:33:49,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:33:49,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:33:49,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:33:49,356 INFO L87 Difference]: Start difference. First operand 1106 states and 1343 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 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) [2021-11-13 17:33:58,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:58,300 INFO L93 Difference]: Finished difference Result 1105 states and 1342 transitions. [2021-11-13 17:33:58,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:33:58,301 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 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 69 [2021-11-13 17:33:58,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:58,305 INFO L225 Difference]: With dead ends: 1105 [2021-11-13 17:33:58,305 INFO L226 Difference]: Without dead ends: 1105 [2021-11-13 17:33:58,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:33:58,306 INFO L933 BasicCegarLoop]: 890 mSDtfsCounter, 2 mSDsluCounter, 2820 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7943.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3710 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.83ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8847.59ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:58,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3710 Invalid, 2524 Unknown, 0 Unchecked, 12.83ms Time], IncrementalHoareTripleChecker [1 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 8847.59ms Time] [2021-11-13 17:33:58,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2021-11-13 17:33:58,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1105. [2021-11-13 17:33:58,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 734 states have (on average 1.8160762942779292) internal successors, (1333), 1097 states have internal predecessors, (1333), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-13 17:33:58,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1342 transitions. [2021-11-13 17:33:58,325 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1342 transitions. Word has length 69 [2021-11-13 17:33:58,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:58,325 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 1342 transitions. [2021-11-13 17:33:58,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 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) [2021-11-13 17:33:58,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1342 transitions. [2021-11-13 17:33:58,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-13 17:33:58,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:58,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:58,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-13 17:33:58,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:33:58,545 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-13 17:33:58,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:58,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1040597000, now seen corresponding path program 1 times [2021-11-13 17:33:58,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:33:58,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075845929] [2021-11-13 17:33:58,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:58,546 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:33:58,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:33:58,547 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:33:58,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 17:33:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:58,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:33:58,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:58,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:33:59,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:33:59,105 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:33:59,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075845929] [2021-11-13 17:33:59,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075845929] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:59,105 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:59,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 17:33:59,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541413649] [2021-11-13 17:33:59,106 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:59,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:33:59,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:33:59,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:33:59,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:33:59,107 INFO L87 Difference]: Start difference. First operand 1105 states and 1342 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2021-11-13 17:33:59,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:59,242 INFO L93 Difference]: Finished difference Result 1115 states and 1355 transitions. [2021-11-13 17:33:59,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:33:59,250 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 77 [2021-11-13 17:33:59,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:59,264 INFO L225 Difference]: With dead ends: 1115 [2021-11-13 17:33:59,264 INFO L226 Difference]: Without dead ends: 1115 [2021-11-13 17:33:59,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:33:59,267 INFO L933 BasicCegarLoop]: 890 mSDtfsCounter, 9 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3548 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.12ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.79ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:59,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 3548 Invalid, 40 Unknown, 0 Unchecked, 3.12ms Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 94.79ms Time] [2021-11-13 17:33:59,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2021-11-13 17:33:59,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1115. [2021-11-13 17:33:59,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 742 states have (on average 1.8126684636118597) internal successors, (1345), 1106 states have internal predecessors, (1345), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-13 17:33:59,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1355 transitions. [2021-11-13 17:33:59,304 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1355 transitions. Word has length 77 [2021-11-13 17:33:59,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:59,304 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1355 transitions. [2021-11-13 17:33:59,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2021-11-13 17:33:59,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1355 transitions. [2021-11-13 17:33:59,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-13 17:33:59,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:59,311 INFO L514 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:59,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 17:33:59,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:33:59,524 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-13 17:33:59,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:59,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1778063432, now seen corresponding path program 1 times [2021-11-13 17:33:59,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:33:59,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738667189] [2021-11-13 17:33:59,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:59,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:33:59,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:33:59,528 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:33:59,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 17:33:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:59,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:33:59,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:34:00,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:34:00,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:34:00,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:34:00,269 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:34:00,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738667189] [2021-11-13 17:34:00,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738667189] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:34:00,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:34:00,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-13 17:34:00,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964760394] [2021-11-13 17:34:00,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:34:00,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:34:00,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:34:00,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:34:00,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:34:00,271 INFO L87 Difference]: Start difference. First operand 1115 states and 1355 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2021-11-13 17:34:00,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:34:00,672 INFO L93 Difference]: Finished difference Result 1129 states and 1373 transitions. [2021-11-13 17:34:00,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 17:34:00,673 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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 79 [2021-11-13 17:34:00,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:34:00,679 INFO L225 Difference]: With dead ends: 1129 [2021-11-13 17:34:00,679 INFO L226 Difference]: Without dead ends: 1125 [2021-11-13 17:34:00,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:34:00,680 INFO L933 BasicCegarLoop]: 892 mSDtfsCounter, 21 mSDsluCounter, 5321 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 179.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 6213 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.52ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 215.80ms IncrementalHoareTripleChecker+Time [2021-11-13 17:34:00,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 6213 Invalid, 123 Unknown, 0 Unchecked, 4.52ms Time], IncrementalHoareTripleChecker [21 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 215.80ms Time] [2021-11-13 17:34:00,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2021-11-13 17:34:00,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1121. [2021-11-13 17:34:00,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 748 states have (on average 1.8088235294117647) internal successors, (1353), 1112 states have internal predecessors, (1353), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-13 17:34:00,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1363 transitions. [2021-11-13 17:34:00,712 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1363 transitions. Word has length 79 [2021-11-13 17:34:00,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:34:00,713 INFO L470 AbstractCegarLoop]: Abstraction has 1121 states and 1363 transitions. [2021-11-13 17:34:00,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2021-11-13 17:34:00,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1363 transitions. [2021-11-13 17:34:00,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 17:34:00,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:34:00,714 INFO L514 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:34:00,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 17:34:00,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:34:00,927 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-13 17:34:00,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:34:00,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1701419208, now seen corresponding path program 2 times [2021-11-13 17:34:00,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:34:00,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084249194] [2021-11-13 17:34:00,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:34:00,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:34:00,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:34:00,929 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:34:00,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 17:34:01,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 17:34:01,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:34:01,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 17:34:01,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:34:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:34:01,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:34:02,061 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:34:02,062 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:34:02,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084249194] [2021-11-13 17:34:02,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084249194] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:34:02,062 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:34:02,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-13 17:34:02,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627520216] [2021-11-13 17:34:02,063 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:34:02,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 17:34:02,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:34:02,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 17:34:02,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:34:02,065 INFO L87 Difference]: Start difference. First operand 1121 states and 1363 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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) [2021-11-13 17:34:03,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:34:03,452 INFO L93 Difference]: Finished difference Result 1149 states and 1401 transitions. [2021-11-13 17:34:03,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 17:34:03,453 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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 83 [2021-11-13 17:34:03,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:34:03,460 INFO L225 Difference]: With dead ends: 1149 [2021-11-13 17:34:03,460 INFO L226 Difference]: Without dead ends: 1145 [2021-11-13 17:34:03,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-13 17:34:03,461 INFO L933 BasicCegarLoop]: 896 mSDtfsCounter, 77 mSDsluCounter, 6247 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 508.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 7143 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.97ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 583.90ms IncrementalHoareTripleChecker+Time [2021-11-13 17:34:03,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 7143 Invalid, 358 Unknown, 0 Unchecked, 7.97ms Time], IncrementalHoareTripleChecker [57 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 583.90ms Time] [2021-11-13 17:34:03,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2021-11-13 17:34:03,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1133. [2021-11-13 17:34:03,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 760 states have (on average 1.8013157894736842) internal successors, (1369), 1124 states have internal predecessors, (1369), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-13 17:34:03,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1379 transitions. [2021-11-13 17:34:03,485 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1379 transitions. Word has length 83 [2021-11-13 17:34:03,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:34:03,485 INFO L470 AbstractCegarLoop]: Abstraction has 1133 states and 1379 transitions. [2021-11-13 17:34:03,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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) [2021-11-13 17:34:03,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1379 transitions. [2021-11-13 17:34:03,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-13 17:34:03,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:34:03,487 INFO L514 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:34:03,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 17:34:03,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:34:03,701 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-13 17:34:03,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:34:03,702 INFO L85 PathProgramCache]: Analyzing trace with hash 331995592, now seen corresponding path program 3 times [2021-11-13 17:34:03,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:34:03,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179820425] [2021-11-13 17:34:03,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 17:34:03,703 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:34:03,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:34:03,704 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:34:03,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 17:34:04,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 17:34:04,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:34:04,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 17:34:04,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:34:04,939 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:34:04,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:34:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:34:06,590 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:34:06,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179820425] [2021-11-13 17:34:06,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179820425] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:34:06,591 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:34:06,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-13 17:34:06,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585579129] [2021-11-13 17:34:06,591 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:34:06,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-13 17:34:06,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:34:06,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-13 17:34:06,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 17:34:06,593 INFO L87 Difference]: Start difference. First operand 1133 states and 1379 transitions. Second operand has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 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) [2021-11-13 17:34:13,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:34:13,825 INFO L93 Difference]: Finished difference Result 1189 states and 1463 transitions. [2021-11-13 17:34:13,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-13 17:34:13,826 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 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 91 [2021-11-13 17:34:13,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:34:13,832 INFO L225 Difference]: With dead ends: 1189 [2021-11-13 17:34:13,833 INFO L226 Difference]: Without dead ends: 1183 [2021-11-13 17:34:13,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-13 17:34:13,835 INFO L933 BasicCegarLoop]: 903 mSDtfsCounter, 207 mSDsluCounter, 13486 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1820.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 14389 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.68ms SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2062.68ms IncrementalHoareTripleChecker+Time [2021-11-13 17:34:13,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 14389 Invalid, 1411 Unknown, 0 Unchecked, 15.68ms Time], IncrementalHoareTripleChecker [181 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 2062.68ms Time] [2021-11-13 17:34:13,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2021-11-13 17:34:13,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1157. [2021-11-13 17:34:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 784 states have (on average 1.7857142857142858) internal successors, (1400), 1148 states have internal predecessors, (1400), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-13 17:34:13,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1410 transitions. [2021-11-13 17:34:13,860 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1410 transitions. Word has length 91 [2021-11-13 17:34:13,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:34:13,861 INFO L470 AbstractCegarLoop]: Abstraction has 1157 states and 1410 transitions. [2021-11-13 17:34:13,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 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) [2021-11-13 17:34:13,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1410 transitions. [2021-11-13 17:34:13,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-13 17:34:13,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:34:13,863 INFO L514 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:34:13,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-13 17:34:14,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:34:14,078 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-13 17:34:14,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:34:14,078 INFO L85 PathProgramCache]: Analyzing trace with hash -770221112, now seen corresponding path program 4 times [2021-11-13 17:34:14,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:34:14,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020570125] [2021-11-13 17:34:14,079 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 17:34:14,079 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:34:14,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:34:14,080 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:34:14,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 17:34:14,374 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 17:34:14,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:34:14,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-13 17:34:14,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:34:15,360 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:34:15,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:34:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:34:18,885 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:34:18,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020570125] [2021-11-13 17:34:18,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020570125] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:34:18,885 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:34:18,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-13 17:34:18,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068745383] [2021-11-13 17:34:18,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:34:18,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-13 17:34:18,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:34:18,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-13 17:34:18,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-13 17:34:18,889 INFO L87 Difference]: Start difference. First operand 1157 states and 1410 transitions. Second operand has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 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) [2021-11-13 17:34:30,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:34:30,936 INFO L93 Difference]: Finished difference Result 1249 states and 1530 transitions. [2021-11-13 17:34:30,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-13 17:34:30,937 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 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 107 [2021-11-13 17:34:30,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:34:30,947 INFO L225 Difference]: With dead ends: 1249 [2021-11-13 17:34:30,947 INFO L226 Difference]: Without dead ends: 1245 [2021-11-13 17:34:30,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-13 17:34:30,954 INFO L933 BasicCegarLoop]: 919 mSDtfsCounter, 268 mSDsluCounter, 28369 mSDsCounter, 0 mSdLazyCounter, 4044 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5481.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 29288 SdHoareTripleChecker+Invalid, 4549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.97ms SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 4044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6201.30ms IncrementalHoareTripleChecker+Time [2021-11-13 17:34:30,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 29288 Invalid, 4549 Unknown, 0 Unchecked, 29.97ms Time], IncrementalHoareTripleChecker [505 Valid, 4044 Invalid, 0 Unknown, 0 Unchecked, 6201.30ms Time] [2021-11-13 17:34:30,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2021-11-13 17:34:30,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1187. [2021-11-13 17:34:30,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 814 states have (on average 1.7764127764127764) internal successors, (1446), 1178 states have internal predecessors, (1446), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-13 17:34:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1456 transitions. [2021-11-13 17:34:30,997 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1456 transitions. Word has length 107 [2021-11-13 17:34:30,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:34:30,998 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 1456 transitions. [2021-11-13 17:34:30,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 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) [2021-11-13 17:34:30,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1456 transitions. [2021-11-13 17:34:30,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-13 17:34:30,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:34:31,000 INFO L514 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:34:31,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 17:34:31,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:34:31,219 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-13 17:34:31,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:34:31,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1054827912, now seen corresponding path program 5 times [2021-11-13 17:34:31,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:34:31,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1078220089] [2021-11-13 17:34:31,220 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 17:34:31,220 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:34:31,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:34:31,222 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:34:31,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 17:34:32,311 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-13 17:34:32,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:34:32,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-13 17:34:32,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:34:32,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 17:34:32,562 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-13 17:34:32,562 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 25 treesize of output 32 [2021-11-13 17:34:32,599 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 [2021-11-13 17:34:32,749 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 37 treesize of output 25 [2021-11-13 17:43:32,374 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-13 17:43:32,375 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:43:32,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1078220089] [2021-11-13 17:43:32,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-13 17:43:32,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1836651928] [2021-11-13 17:43:32,376 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 17:43:32,376 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 17:43:32,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/cvc4 [2021-11-13 17:43:32,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-13 17:43:32,377 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 17:43:32,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-13 17:44:40,309 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-13 17:44:40,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:44:40,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-13 17:44:40,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:44:40,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-13 17:44:40,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387665494] [2021-11-13 17:44:40,535 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 17:44:40,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:44:40,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:44:40,541 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:44:40,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44bea3a1-5863-4354-8f4e-d6a90011aece/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process