./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt --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 098cac8041f427989b0fcb649de06793770da06a ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt --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 098cac8041f427989b0fcb649de06793770da06a ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-12 23:59:00,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-12 23:59:00,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-12 23:59:00,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-12 23:59:00,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-12 23:59:00,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-12 23:59:00,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-12 23:59:00,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-12 23:59:00,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-12 23:59:00,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-12 23:59:00,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-12 23:59:00,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-12 23:59:00,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-12 23:59:00,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-12 23:59:00,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-12 23:59:00,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-12 23:59:00,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-12 23:59:00,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-12 23:59:00,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-12 23:59:00,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-12 23:59:00,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-12 23:59:00,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-12 23:59:00,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-12 23:59:00,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-12 23:59:00,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-12 23:59:00,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-12 23:59:00,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-12 23:59:00,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-12 23:59:00,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-12 23:59:00,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-12 23:59:00,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-12 23:59:00,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-12 23:59:00,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-12 23:59:00,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-12 23:59:00,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-12 23:59:00,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-12 23:59:00,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-12 23:59:00,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-12 23:59:00,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-12 23:59:00,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-12 23:59:00,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-12 23:59:00,690 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-12 23:59:00,736 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-12 23:59:00,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-12 23:59:00,737 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-12 23:59:00,737 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-12 23:59:00,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-12 23:59:00,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-12 23:59:00,740 INFO L138 SettingsManager]: * Use SBE=true [2021-10-12 23:59:00,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-12 23:59:00,741 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-12 23:59:00,741 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-12 23:59:00,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-12 23:59:00,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-12 23:59:00,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-12 23:59:00,743 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-12 23:59:00,743 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-12 23:59:00,743 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-12 23:59:00,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-12 23:59:00,744 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-12 23:59:00,744 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-12 23:59:00,744 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-12 23:59:00,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-12 23:59:00,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-12 23:59:00,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-12 23:59:00,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-12 23:59:00,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-12 23:59:00,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-12 23:59:00,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-12 23:59:00,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-12 23:59:00,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-12 23:59:00,748 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_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 098cac8041f427989b0fcb649de06793770da06a [2021-10-12 23:59:01,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-12 23:59:01,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-12 23:59:01,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-12 23:59:01,131 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-12 23:59:01,132 INFO L275 PluginConnector]: CDTParser initialized [2021-10-12 23:59:01,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2021-10-12 23:59:01,215 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/data/7cfb01f24/b730e0bd1c1a46e38230ab7ec33ce7e9/FLAG1c38b94c6 [2021-10-12 23:59:01,852 INFO L306 CDTParser]: Found 1 translation units. [2021-10-12 23:59:01,853 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2021-10-12 23:59:01,868 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/data/7cfb01f24/b730e0bd1c1a46e38230ab7ec33ce7e9/FLAG1c38b94c6 [2021-10-12 23:59:02,111 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/data/7cfb01f24/b730e0bd1c1a46e38230ab7ec33ce7e9 [2021-10-12 23:59:02,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-12 23:59:02,117 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-12 23:59:02,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-12 23:59:02,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-12 23:59:02,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-12 23:59:02,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:02" (1/1) ... [2021-10-12 23:59:02,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f7d8a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:02, skipping insertion in model container [2021-10-12 23:59:02,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:02" (1/1) ... [2021-10-12 23:59:02,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-12 23:59:02,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-12 23:59:02,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-12 23:59:02,612 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-12 23:59:02,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@62e55679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:02, skipping insertion in model container [2021-10-12 23:59:02,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-12 23:59:02,613 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-12 23:59:02,616 INFO L168 Benchmark]: Toolchain (without parser) took 497.61 ms. Allocated memory is still 94.4 MB. Free memory was 58.7 MB in the beginning and 65.5 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:02,616 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 94.4 MB. Free memory was 66.8 MB in the beginning and 66.8 MB in the end (delta: 27.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-12 23:59:02,617 INFO L168 Benchmark]: CACSL2BoogieTranslator took 491.66 ms. Allocated memory is still 94.4 MB. Free memory was 58.5 MB in the beginning and 65.5 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:02,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 94.4 MB. Free memory was 66.8 MB in the beginning and 66.8 MB in the end (delta: 27.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 491.66 ms. Allocated memory is still 94.4 MB. Free memory was 58.5 MB in the beginning and 65.5 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-12 23:59:04,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-12 23:59:04,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-12 23:59:04,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-12 23:59:04,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-12 23:59:04,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-12 23:59:04,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-12 23:59:04,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-12 23:59:04,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-12 23:59:04,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-12 23:59:04,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-12 23:59:04,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-12 23:59:04,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-12 23:59:04,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-12 23:59:04,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-12 23:59:04,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-12 23:59:04,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-12 23:59:04,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-12 23:59:04,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-12 23:59:04,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-12 23:59:04,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-12 23:59:04,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-12 23:59:04,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-12 23:59:04,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-12 23:59:04,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-12 23:59:04,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-12 23:59:04,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-12 23:59:04,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-12 23:59:04,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-12 23:59:04,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-12 23:59:04,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-12 23:59:04,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-12 23:59:04,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-12 23:59:04,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-12 23:59:04,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-12 23:59:04,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-12 23:59:04,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-12 23:59:04,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-12 23:59:04,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-12 23:59:04,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-12 23:59:04,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-12 23:59:04,876 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-12 23:59:04,922 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-12 23:59:04,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-12 23:59:04,923 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-12 23:59:04,923 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-12 23:59:04,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-12 23:59:04,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-12 23:59:04,926 INFO L138 SettingsManager]: * Use SBE=true [2021-10-12 23:59:04,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-12 23:59:04,926 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-12 23:59:04,926 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-12 23:59:04,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-12 23:59:04,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-12 23:59:04,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-12 23:59:04,928 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-12 23:59:04,928 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-12 23:59:04,928 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-12 23:59:04,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-12 23:59:04,929 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-12 23:59:04,929 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-12 23:59:04,929 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-12 23:59:04,929 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-12 23:59:04,929 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-12 23:59:04,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-12 23:59:04,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-12 23:59:04,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-12 23:59:04,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-12 23:59:04,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-12 23:59:04,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-12 23:59:04,931 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-12 23:59:04,931 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-12 23:59:04,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-12 23:59:04,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-12 23:59:04,932 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_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 098cac8041f427989b0fcb649de06793770da06a [2021-10-12 23:59:05,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-12 23:59:05,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-12 23:59:05,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-12 23:59:05,362 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-12 23:59:05,363 INFO L275 PluginConnector]: CDTParser initialized [2021-10-12 23:59:05,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2021-10-12 23:59:05,437 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/data/8788b8321/14a37453b7f54bcfa9ad65ec6a9728be/FLAG05e953473 [2021-10-12 23:59:06,125 INFO L306 CDTParser]: Found 1 translation units. [2021-10-12 23:59:06,126 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/sv-benchmarks/c/ldv-memsafety/memleaks_test6_2.i [2021-10-12 23:59:06,148 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/data/8788b8321/14a37453b7f54bcfa9ad65ec6a9728be/FLAG05e953473 [2021-10-12 23:59:06,324 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/data/8788b8321/14a37453b7f54bcfa9ad65ec6a9728be [2021-10-12 23:59:06,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-12 23:59:06,331 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-12 23:59:06,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-12 23:59:06,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-12 23:59:06,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-12 23:59:06,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:06" (1/1) ... [2021-10-12 23:59:06,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7566e9bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:06, skipping insertion in model container [2021-10-12 23:59:06,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:06" (1/1) ... [2021-10-12 23:59:06,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-12 23:59:06,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-12 23:59:06,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-12 23:59:07,013 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-12 23:59:07,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-12 23:59:07,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-12 23:59:07,086 INFO L203 MainTranslator]: Completed pre-run [2021-10-12 23:59:07,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-12 23:59:07,178 INFO L208 MainTranslator]: Completed translation [2021-10-12 23:59:07,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:07 WrapperNode [2021-10-12 23:59:07,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-12 23:59:07,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-12 23:59:07,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-12 23:59:07,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-12 23:59:07,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:07" (1/1) ... [2021-10-12 23:59:07,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:07" (1/1) ... [2021-10-12 23:59:07,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:07" (1/1) ... [2021-10-12 23:59:07,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:07" (1/1) ... [2021-10-12 23:59:07,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:07" (1/1) ... [2021-10-12 23:59:07,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:07" (1/1) ... [2021-10-12 23:59:07,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:07" (1/1) ... [2021-10-12 23:59:07,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-12 23:59:07,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-12 23:59:07,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-12 23:59:07,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-12 23:59:07,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:07" (1/1) ... [2021-10-12 23:59:07,340 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-12 23:59:07,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:07,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:07,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-12 23:59:07,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-12 23:59:07,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-12 23:59:07,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-10-12 23:59:07,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-12 23:59:07,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-12 23:59:07,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-12 23:59:07,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-12 23:59:07,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-12 23:59:07,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-12 23:59:07,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-10-12 23:59:07,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-10-12 23:59:07,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-10-12 23:59:07,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-10-12 23:59:07,416 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-10-12 23:59:07,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-10-12 23:59:07,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-10-12 23:59:07,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-10-12 23:59:07,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-10-12 23:59:07,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-10-12 23:59:07,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-10-12 23:59:07,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-10-12 23:59:07,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-10-12 23:59:07,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-10-12 23:59:07,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-10-12 23:59:07,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-10-12 23:59:07,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-10-12 23:59:07,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-10-12 23:59:07,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-10-12 23:59:07,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-10-12 23:59:07,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-10-12 23:59:07,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-10-12 23:59:07,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-10-12 23:59:07,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-10-12 23:59:07,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-10-12 23:59:07,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-10-12 23:59:07,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-10-12 23:59:07,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-10-12 23:59:07,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-10-12 23:59:07,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-10-12 23:59:07,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-10-12 23:59:07,421 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-12 23:59:07,421 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-12 23:59:07,421 INFO L138 BoogieDeclarations]: Found implementation of procedure f6 [2021-10-12 23:59:07,421 INFO L138 BoogieDeclarations]: Found implementation of procedure g6 [2021-10-12 23:59:07,422 INFO L138 BoogieDeclarations]: Found implementation of procedure probe3_6 [2021-10-12 23:59:07,422 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_6 [2021-10-12 23:59:07,422 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-10-12 23:59:07,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-12 23:59:07,422 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-12 23:59:07,422 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-10-12 23:59:07,423 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-10-12 23:59:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-12 23:59:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-12 23:59:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-12 23:59:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-12 23:59:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-12 23:59:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-12 23:59:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-12 23:59:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-12 23:59:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-12 23:59:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-12 23:59:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-12 23:59:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-12 23:59:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-12 23:59:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-12 23:59:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-12 23:59:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-12 23:59:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-12 23:59:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-12 23:59:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-12 23:59:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-12 23:59:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-12 23:59:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-12 23:59:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-12 23:59:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-12 23:59:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-12 23:59:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-12 23:59:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-12 23:59:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-12 23:59:07,428 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-12 23:59:07,428 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-12 23:59:07,428 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-12 23:59:07,428 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-12 23:59:07,428 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-12 23:59:07,428 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-12 23:59:07,429 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-12 23:59:07,429 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-12 23:59:07,429 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-12 23:59:07,429 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-12 23:59:07,429 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-12 23:59:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-12 23:59:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-12 23:59:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-12 23:59:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-12 23:59:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-12 23:59:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-12 23:59:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-12 23:59:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-12 23:59:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-12 23:59:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-12 23:59:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-12 23:59:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-12 23:59:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-12 23:59:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-12 23:59:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-12 23:59:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-12 23:59:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-12 23:59:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-12 23:59:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-12 23:59:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-12 23:59:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-12 23:59:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-12 23:59:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-12 23:59:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-12 23:59:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-12 23:59:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-12 23:59:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-12 23:59:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-12 23:59:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-12 23:59:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-12 23:59:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-12 23:59:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-12 23:59:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-12 23:59:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-12 23:59:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-12 23:59:07,436 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-12 23:59:07,436 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-12 23:59:07,436 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-12 23:59:07,436 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-12 23:59:07,436 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-12 23:59:07,436 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-12 23:59:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-12 23:59:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-12 23:59:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-12 23:59:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-12 23:59:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-12 23:59:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-12 23:59:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-12 23:59:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-12 23:59:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-12 23:59:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-12 23:59:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-12 23:59:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-12 23:59:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-12 23:59:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-12 23:59:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-12 23:59:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-12 23:59:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-12 23:59:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-12 23:59:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-12 23:59:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-12 23:59:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-12 23:59:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-12 23:59:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-12 23:59:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-12 23:59:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-12 23:59:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-12 23:59:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-12 23:59:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-10-12 23:59:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-12 23:59:07,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-10-12 23:59:07,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-10-12 23:59:07,442 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-12 23:59:07,442 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-12 23:59:07,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-10-12 23:59:07,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-12 23:59:07,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-10-12 23:59:07,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-10-12 23:59:07,443 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-10-12 23:59:07,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-12 23:59:07,443 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-10-12 23:59:07,444 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-10-12 23:59:07,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-10-12 23:59:07,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-12 23:59:07,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-10-12 23:59:07,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-10-12 23:59:07,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-10-12 23:59:07,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-10-12 23:59:07,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-10-12 23:59:07,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-10-12 23:59:07,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-12 23:59:07,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-10-12 23:59:07,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-10-12 23:59:07,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-10-12 23:59:07,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-10-12 23:59:07,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-10-12 23:59:07,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-12 23:59:07,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-12 23:59:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-10-12 23:59:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-10-12 23:59:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-10-12 23:59:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-10-12 23:59:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-10-12 23:59:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-10-12 23:59:07,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-10-12 23:59:07,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-10-12 23:59:07,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-10-12 23:59:07,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-10-12 23:59:07,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-10-12 23:59:07,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-10-12 23:59:07,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-10-12 23:59:07,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-10-12 23:59:07,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-12 23:59:07,449 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-12 23:59:07,449 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-12 23:59:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure f6 [2021-10-12 23:59:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure g6 [2021-10-12 23:59:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure probe3_6 [2021-10-12 23:59:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_6 [2021-10-12 23:59:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-10-12 23:59:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-12 23:59:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-12 23:59:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-12 23:59:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-12 23:59:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-12 23:59:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-12 23:59:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-10-12 23:59:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-10-12 23:59:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-10-12 23:59:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-10-12 23:59:08,081 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-12 23:59:08,475 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-12 23:59:08,870 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-12 23:59:08,872 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-12 23:59:08,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:08 BoogieIcfgContainer [2021-10-12 23:59:08,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-12 23:59:08,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-12 23:59:08,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-12 23:59:08,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-12 23:59:08,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:59:06" (1/3) ... [2021-10-12 23:59:08,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1cb5d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:59:08, skipping insertion in model container [2021-10-12 23:59:08,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:07" (2/3) ... [2021-10-12 23:59:08,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1cb5d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:59:08, skipping insertion in model container [2021-10-12 23:59:08,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:08" (3/3) ... [2021-10-12 23:59:08,883 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6_2.i [2021-10-12 23:59:08,889 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-12 23:59:08,889 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 86 error locations. [2021-10-12 23:59:08,932 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-12 23:59:08,938 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-12 23:59:08,938 INFO L340 AbstractCegarLoop]: Starting to check reachability of 86 error locations. [2021-10-12 23:59:08,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 139 states, 76 states have (on average 1.5657894736842106) internal successors, (119), 110 states have internal predecessors, (119), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-10-12 23:59:08,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-12 23:59:08,964 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:08,965 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:08,965 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-12 23:59:08,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:08,970 INFO L82 PathProgramCache]: Analyzing trace with hash -2083337596, now seen corresponding path program 1 times [2021-10-12 23:59:09,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-12 23:59:09,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139982982] [2021-10-12 23:59:09,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:09,006 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-12 23:59:09,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-12 23:59:09,009 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-12 23:59:09,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-12 23:59:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:09,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-12 23:59:09,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:09,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-12 23:59:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:09,557 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-12 23:59:09,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139982982] [2021-10-12 23:59:09,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139982982] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:09,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-12 23:59:09,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-12 23:59:09,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737149639] [2021-10-12 23:59:09,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-12 23:59:09,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-12 23:59:09,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-12 23:59:09,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-12 23:59:09,594 INFO L87 Difference]: Start difference. First operand has 139 states, 76 states have (on average 1.5657894736842106) internal successors, (119), 110 states have internal predecessors, (119), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-12 23:59:09,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:09,707 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2021-10-12 23:59:09,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-12 23:59:09,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2021-10-12 23:59:09,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:09,723 INFO L225 Difference]: With dead ends: 94 [2021-10-12 23:59:09,724 INFO L226 Difference]: Without dead ends: 91 [2021-10-12 23:59:09,725 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.2ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-12 23:59:09,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-12 23:59:09,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 70. [2021-10-12 23:59:09,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 54 states have internal predecessors, (58), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-12 23:59:09,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2021-10-12 23:59:09,783 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 20 [2021-10-12 23:59:09,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:09,785 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2021-10-12 23:59:09,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-12 23:59:09,786 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2021-10-12 23:59:09,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-12 23:59:09,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:09,787 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:09,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:10,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-12 23:59:10,000 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-12 23:59:10,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:10,001 INFO L82 PathProgramCache]: Analyzing trace with hash 2015116195, now seen corresponding path program 1 times [2021-10-12 23:59:10,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-12 23:59:10,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981927537] [2021-10-12 23:59:10,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:10,002 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-12 23:59:10,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-12 23:59:10,003 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-12 23:59:10,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-12 23:59:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:10,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-12 23:59:10,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:10,273 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-12 23:59:10,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-12 23:59:10,417 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 7 treesize of output 5 [2021-10-12 23:59:10,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:10,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-12 23:59:10,658 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 10 treesize of output 8 [2021-10-12 23:59:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:10,767 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-12 23:59:10,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981927537] [2021-10-12 23:59:10,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981927537] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:10,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-12 23:59:10,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-12 23:59:10,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58634469] [2021-10-12 23:59:10,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-12 23:59:10,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-12 23:59:10,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-12 23:59:10,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-12 23:59:10,774 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-12 23:59:10,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:10,963 INFO L93 Difference]: Finished difference Result 111 states and 120 transitions. [2021-10-12 23:59:10,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-12 23:59:10,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 20 [2021-10-12 23:59:10,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:10,966 INFO L225 Difference]: With dead ends: 111 [2021-10-12 23:59:10,966 INFO L226 Difference]: Without dead ends: 108 [2021-10-12 23:59:10,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-12 23:59:10,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-12 23:59:10,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 75. [2021-10-12 23:59:10,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 42 states have (on average 1.5) internal successors, (63), 58 states have internal predecessors, (63), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-10-12 23:59:10,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2021-10-12 23:59:10,990 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 20 [2021-10-12 23:59:10,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:10,991 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2021-10-12 23:59:10,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-10-12 23:59:10,992 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2021-10-12 23:59:10,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-12 23:59:10,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:10,993 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:11,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:11,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-12 23:59:11,209 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-12 23:59:11,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:11,209 INFO L82 PathProgramCache]: Analyzing trace with hash 2015116196, now seen corresponding path program 1 times [2021-10-12 23:59:11,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-12 23:59:11,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59982943] [2021-10-12 23:59:11,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:11,210 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-12 23:59:11,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-12 23:59:11,211 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-12 23:59:11,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-12 23:59:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:11,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-12 23:59:11,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:11,441 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-12 23:59:11,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-12 23:59:11,529 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 5 treesize of output 3 [2021-10-12 23:59:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:11,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-12 23:59:12,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-12 23:59:12,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:12,264 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-12 23:59:12,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59982943] [2021-10-12 23:59:12,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59982943] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:12,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-12 23:59:12,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-12 23:59:12,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216645538] [2021-10-12 23:59:12,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-12 23:59:12,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-12 23:59:12,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-12 23:59:12,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-12 23:59:12,267 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-12 23:59:12,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:12,660 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2021-10-12 23:59:12,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-12 23:59:12,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 20 [2021-10-12 23:59:12,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:12,663 INFO L225 Difference]: With dead ends: 125 [2021-10-12 23:59:12,663 INFO L226 Difference]: Without dead ends: 124 [2021-10-12 23:59:12,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-12 23:59:12,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-12 23:59:12,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 106. [2021-10-12 23:59:12,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 83 states have internal predecessors, (103), 11 states have call successors, (11), 11 states have call predecessors, (11), 13 states have return successors, (13), 13 states have call predecessors, (13), 10 states have call successors, (13) [2021-10-12 23:59:12,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2021-10-12 23:59:12,674 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 20 [2021-10-12 23:59:12,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:12,675 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2021-10-12 23:59:12,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-12 23:59:12,675 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2021-10-12 23:59:12,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-12 23:59:12,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:12,676 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:12,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:12,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-12 23:59:12,892 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-12 23:59:12,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:12,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1702507591, now seen corresponding path program 1 times [2021-10-12 23:59:12,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-12 23:59:12,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954182665] [2021-10-12 23:59:12,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:12,893 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-12 23:59:12,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-12 23:59:12,895 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-12 23:59:12,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-12 23:59:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:13,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-12 23:59:13,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:13,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:13,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-12 23:59:13,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:13,231 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-12 23:59:13,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954182665] [2021-10-12 23:59:13,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954182665] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:13,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-12 23:59:13,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-12 23:59:13,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493395983] [2021-10-12 23:59:13,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-12 23:59:13,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-12 23:59:13,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-12 23:59:13,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-12 23:59:13,246 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-12 23:59:13,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:13,284 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2021-10-12 23:59:13,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-12 23:59:13,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-10-12 23:59:13,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:13,288 INFO L225 Difference]: With dead ends: 104 [2021-10-12 23:59:13,288 INFO L226 Difference]: Without dead ends: 104 [2021-10-12 23:59:13,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-12 23:59:13,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-12 23:59:13,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-10-12 23:59:13,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 66 states have (on average 1.5) internal successors, (99), 81 states have internal predecessors, (99), 11 states have call successors, (11), 11 states have call predecessors, (11), 13 states have return successors, (13), 13 states have call predecessors, (13), 10 states have call successors, (13) [2021-10-12 23:59:13,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2021-10-12 23:59:13,305 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 22 [2021-10-12 23:59:13,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:13,305 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2021-10-12 23:59:13,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-12 23:59:13,306 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2021-10-12 23:59:13,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-12 23:59:13,307 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:13,307 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:13,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:13,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-12 23:59:13,507 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting disconnect_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-12 23:59:13,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:13,508 INFO L82 PathProgramCache]: Analyzing trace with hash -503576158, now seen corresponding path program 1 times [2021-10-12 23:59:13,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-12 23:59:13,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034318986] [2021-10-12 23:59:13,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:13,508 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-12 23:59:13,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-12 23:59:13,509 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-12 23:59:13,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-12 23:59:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:13,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-12 23:59:13,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:13,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:13,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-12 23:59:13,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:13,950 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-12 23:59:13,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034318986] [2021-10-12 23:59:13,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034318986] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:13,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-12 23:59:13,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-12 23:59:13,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966664109] [2021-10-12 23:59:13,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-12 23:59:13,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-12 23:59:13,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-12 23:59:13,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-12 23:59:13,951 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-12 23:59:14,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:14,016 INFO L93 Difference]: Finished difference Result 118 states and 137 transitions. [2021-10-12 23:59:14,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-12 23:59:14,021 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 22 [2021-10-12 23:59:14,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:14,022 INFO L225 Difference]: With dead ends: 118 [2021-10-12 23:59:14,022 INFO L226 Difference]: Without dead ends: 114 [2021-10-12 23:59:14,022 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 77.3ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-12 23:59:14,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-12 23:59:14,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 108. [2021-10-12 23:59:14,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 69 states have (on average 1.463768115942029) internal successors, (101), 84 states have internal predecessors, (101), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-10-12 23:59:14,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 126 transitions. [2021-10-12 23:59:14,031 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 126 transitions. Word has length 22 [2021-10-12 23:59:14,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:14,032 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 126 transitions. [2021-10-12 23:59:14,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-12 23:59:14,032 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 126 transitions. [2021-10-12 23:59:14,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-12 23:59:14,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:14,033 INFO L512 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] [2021-10-12 23:59:14,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:14,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-12 23:59:14,253 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-12 23:59:14,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:14,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1238127481, now seen corresponding path program 1 times [2021-10-12 23:59:14,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-12 23:59:14,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030268865] [2021-10-12 23:59:14,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:14,254 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-12 23:59:14,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-12 23:59:14,255 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-12 23:59:14,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-12 23:59:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:14,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-12 23:59:14,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:14,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:14,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-12 23:59:14,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:14,999 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-12 23:59:14,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030268865] [2021-10-12 23:59:14,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030268865] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:14,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-12 23:59:14,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-10-12 23:59:14,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792361218] [2021-10-12 23:59:15,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-12 23:59:15,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-12 23:59:15,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-12 23:59:15,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-12 23:59:15,001 INFO L87 Difference]: Start difference. First operand 108 states and 126 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-10-12 23:59:15,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:15,338 INFO L93 Difference]: Finished difference Result 118 states and 125 transitions. [2021-10-12 23:59:15,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-12 23:59:15,339 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 23 [2021-10-12 23:59:15,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:15,340 INFO L225 Difference]: With dead ends: 118 [2021-10-12 23:59:15,340 INFO L226 Difference]: Without dead ends: 118 [2021-10-12 23:59:15,340 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 132.6ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-12 23:59:15,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-12 23:59:15,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2021-10-12 23:59:15,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.4057971014492754) internal successors, (97), 82 states have internal predecessors, (97), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-10-12 23:59:15,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2021-10-12 23:59:15,348 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 23 [2021-10-12 23:59:15,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:15,349 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2021-10-12 23:59:15,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-10-12 23:59:15,349 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2021-10-12 23:59:15,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-12 23:59:15,350 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:15,350 INFO L512 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] [2021-10-12 23:59:15,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:15,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-12 23:59:15,562 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-12 23:59:15,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:15,563 INFO L82 PathProgramCache]: Analyzing trace with hash 272754043, now seen corresponding path program 1 times [2021-10-12 23:59:15,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-12 23:59:15,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246552926] [2021-10-12 23:59:15,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:15,563 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-12 23:59:15,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-12 23:59:15,564 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-12 23:59:15,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-12 23:59:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:15,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-12 23:59:15,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:15,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-12 23:59:15,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:15,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-12 23:59:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:16,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-12 23:59:16,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246552926] [2021-10-12 23:59:16,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246552926] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:16,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-12 23:59:16,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2021-10-12 23:59:16,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812651927] [2021-10-12 23:59:16,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-12 23:59:16,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-12 23:59:16,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-12 23:59:16,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-12 23:59:16,100 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-12 23:59:16,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:16,290 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2021-10-12 23:59:16,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-12 23:59:16,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-10-12 23:59:16,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:16,292 INFO L225 Difference]: With dead ends: 108 [2021-10-12 23:59:16,292 INFO L226 Difference]: Without dead ends: 108 [2021-10-12 23:59:16,292 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 54.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-12 23:59:16,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-12 23:59:16,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2021-10-12 23:59:16,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.3768115942028984) internal successors, (95), 82 states have internal predecessors, (95), 11 states have call successors, (11), 11 states have call predecessors, (11), 14 states have return successors, (14), 14 states have call predecessors, (14), 10 states have call successors, (14) [2021-10-12 23:59:16,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2021-10-12 23:59:16,299 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 24 [2021-10-12 23:59:16,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:16,299 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2021-10-12 23:59:16,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-12 23:59:16,300 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2021-10-12 23:59:16,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-12 23:59:16,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:16,301 INFO L512 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] [2021-10-12 23:59:16,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:16,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-12 23:59:16,514 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-12 23:59:16,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:16,514 INFO L82 PathProgramCache]: Analyzing trace with hash -232804582, now seen corresponding path program 1 times [2021-10-12 23:59:16,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-12 23:59:16,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865022502] [2021-10-12 23:59:16,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:16,515 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-12 23:59:16,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-12 23:59:16,516 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-12 23:59:16,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-12 23:59:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:16,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-12 23:59:16,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:16,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-12 23:59:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:17,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-12 23:59:17,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865022502] [2021-10-12 23:59:17,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865022502] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:17,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-12 23:59:17,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-12 23:59:17,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294652449] [2021-10-12 23:59:17,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-12 23:59:17,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-12 23:59:17,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-12 23:59:17,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-12 23:59:17,041 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-12 23:59:17,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:17,067 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2021-10-12 23:59:17,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-12 23:59:17,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-10-12 23:59:17,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:17,069 INFO L225 Difference]: With dead ends: 68 [2021-10-12 23:59:17,069 INFO L226 Difference]: Without dead ends: 64 [2021-10-12 23:59:17,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.2ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-12 23:59:17,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-12 23:59:17,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-12 23:59:17,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 48 states have internal predecessors, (50), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-12 23:59:17,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2021-10-12 23:59:17,072 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 24 [2021-10-12 23:59:17,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:17,073 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2021-10-12 23:59:17,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-12 23:59:17,073 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2021-10-12 23:59:17,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-12 23:59:17,074 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:17,074 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:17,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:17,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-12 23:59:17,286 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting probe3_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-12 23:59:17,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:17,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1514319562, now seen corresponding path program 1 times [2021-10-12 23:59:17,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-12 23:59:17,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044340474] [2021-10-12 23:59:17,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:17,287 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-12 23:59:17,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-12 23:59:17,290 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-12 23:59:17,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-12 23:59:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:17,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-12 23:59:17,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:17,636 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-12 23:59:17,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-12 23:59:17,830 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-12 23:59:17,830 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 17 treesize of output 22 [2021-10-12 23:59:17,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:17,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-12 23:59:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:18,260 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-12 23:59:18,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044340474] [2021-10-12 23:59:18,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044340474] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:18,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-12 23:59:18,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 8 [2021-10-12 23:59:18,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653392251] [2021-10-12 23:59:18,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-12 23:59:18,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-12 23:59:18,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-12 23:59:18,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-12 23:59:18,262 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-12 23:59:18,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:18,674 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2021-10-12 23:59:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-12 23:59:18,675 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 28 [2021-10-12 23:59:18,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:18,676 INFO L225 Difference]: With dead ends: 63 [2021-10-12 23:59:18,676 INFO L226 Difference]: Without dead ends: 63 [2021-10-12 23:59:18,676 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 324.0ms TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-10-12 23:59:18,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-12 23:59:18,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-10-12 23:59:18,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 47 states have internal predecessors, (49), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-12 23:59:18,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2021-10-12 23:59:18,685 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 28 [2021-10-12 23:59:18,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:18,686 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2021-10-12 23:59:18,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-12 23:59:18,686 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2021-10-12 23:59:18,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-12 23:59:18,689 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:18,689 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:18,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:18,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-12 23:59:18,898 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting probe3_6Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-12 23:59:18,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:18,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1514319563, now seen corresponding path program 1 times [2021-10-12 23:59:18,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-12 23:59:18,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861368515] [2021-10-12 23:59:18,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:18,899 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-12 23:59:18,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-12 23:59:18,899 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-12 23:59:18,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-12 23:59:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:19,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-12 23:59:19,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:19,217 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-10-12 23:59:19,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-10-12 23:59:23,468 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-12 23:59:23,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-10-12 23:59:23,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:23,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-12 23:59:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:26,445 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-12 23:59:26,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861368515] [2021-10-12 23:59:26,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861368515] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:26,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-12 23:59:26,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2021-10-12 23:59:26,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265680443] [2021-10-12 23:59:26,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-12 23:59:26,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-12 23:59:26,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-12 23:59:26,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=167, Unknown=2, NotChecked=0, Total=210 [2021-10-12 23:59:26,449 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-12 23:59:33,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:33,987 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2021-10-12 23:59:33,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-12 23:59:33,988 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 28 [2021-10-12 23:59:33,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:33,989 INFO L225 Difference]: With dead ends: 61 [2021-10-12 23:59:33,989 INFO L226 Difference]: Without dead ends: 61 [2021-10-12 23:59:33,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 7000.5ms TimeCoverageRelationStatistics Valid=123, Invalid=381, Unknown=2, NotChecked=0, Total=506 [2021-10-12 23:59:33,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-12 23:59:33,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-12 23:59:33,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 38 states have (on average 1.236842105263158) internal successors, (47), 45 states have internal predecessors, (47), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-10-12 23:59:33,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2021-10-12 23:59:33,994 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 28 [2021-10-12 23:59:33,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:33,994 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2021-10-12 23:59:33,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-10-12 23:59:33,995 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2021-10-12 23:59:33,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-12 23:59:33,996 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:33,996 INFO L512 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] [2021-10-12 23:59:34,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:34,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-12 23:59:34,201 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-12 23:59:34,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:34,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1727877462, now seen corresponding path program 1 times [2021-10-12 23:59:34,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-12 23:59:34,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993656945] [2021-10-12 23:59:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:34,202 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-12 23:59:34,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-12 23:59:34,203 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-12 23:59:34,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-12 23:59:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:34,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-12 23:59:34,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:34,547 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-12 23:59:34,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-12 23:59:34,638 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 7 treesize of output 5 [2021-10-12 23:59:34,766 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 0 case distinctions, treesize of input 20 treesize of output 17 [2021-10-12 23:59:34,997 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-12 23:59:34,998 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 28 treesize of output 31 [2021-10-12 23:59:35,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:35,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-12 23:59:35,582 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 9 treesize of output 7 [2021-10-12 23:59:35,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:35,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-12 23:59:35,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993656945] [2021-10-12 23:59:35,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993656945] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:35,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-12 23:59:35,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-10-12 23:59:35,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979491469] [2021-10-12 23:59:35,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-12 23:59:35,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-12 23:59:35,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-12 23:59:35,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-12 23:59:35,799 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-10-13 00:00:00,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:00:00,463 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2021-10-13 00:00:00,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:00:00,463 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 29 [2021-10-13 00:00:00,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:00:00,464 INFO L225 Difference]: With dead ends: 65 [2021-10-13 00:00:00,464 INFO L226 Difference]: Without dead ends: 54 [2021-10-13 00:00:00,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 4499.4ms TimeCoverageRelationStatistics Valid=74, Invalid=231, Unknown=1, NotChecked=0, Total=306 [2021-10-13 00:00:00,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-13 00:00:00,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-13 00:00:00,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 32 states have (on average 1.1875) internal successors, (38), 38 states have internal predecessors, (38), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-13 00:00:00,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 53 transitions. [2021-10-13 00:00:00,468 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 53 transitions. Word has length 29 [2021-10-13 00:00:00,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:00:00,469 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 53 transitions. [2021-10-13 00:00:00,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-10-13 00:00:00,469 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 53 transitions. [2021-10-13 00:00:00,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 00:00:00,470 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:00:00,471 INFO L512 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] [2021-10-13 00:00:00,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-13 00:00:00,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:00:00,681 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting disconnect_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-13 00:00:00,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:00:00,681 INFO L82 PathProgramCache]: Analyzing trace with hash 764373490, now seen corresponding path program 1 times [2021-10-13 00:00:00,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:00:00,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703034447] [2021-10-13 00:00:00,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:00:00,681 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:00:00,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:00:00,682 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:00:00,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 00:00:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:00:00,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 00:00:01,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:00:01,055 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-10-13 00:00:01,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-10-13 00:00:01,142 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 7 treesize of output 5 [2021-10-13 00:00:01,321 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 0 case distinctions, treesize of input 20 treesize of output 17 [2021-10-13 00:00:01,441 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 0 case distinctions, treesize of input 20 treesize of output 17 [2021-10-13 00:00:05,772 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-13 00:00:05,772 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 46 treesize of output 47 [2021-10-13 00:00:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:00:05,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:00:06,743 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 9 treesize of output 7 [2021-10-13 00:00:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:00:13,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:00:13,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703034447] [2021-10-13 00:00:13,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703034447] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:00:13,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:00:13,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 10] imperfect sequences [] total 21 [2021-10-13 00:00:13,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127874576] [2021-10-13 00:00:13,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 00:00:13,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:00:13,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 00:00:13,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=374, Unknown=5, NotChecked=0, Total=462 [2021-10-13 00:00:13,088 INFO L87 Difference]: Start difference. First operand 54 states and 53 transitions. Second operand has 22 states, 20 states have (on average 2.4) internal successors, (48), 18 states have internal predecessors, (48), 7 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2021-10-13 00:01:12,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:01:12,264 INFO L93 Difference]: Finished difference Result 53 states and 52 transitions. [2021-10-13 00:01:12,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:01:12,265 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.4) internal successors, (48), 18 states have internal predecessors, (48), 7 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 38 [2021-10-13 00:01:12,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:01:12,266 INFO L225 Difference]: With dead ends: 53 [2021-10-13 00:01:12,266 INFO L226 Difference]: Without dead ends: 53 [2021-10-13 00:01:12,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 19222.1ms TimeCoverageRelationStatistics Valid=175, Invalid=746, Unknown=9, NotChecked=0, Total=930 [2021-10-13 00:01:12,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-13 00:01:12,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-10-13 00:01:12,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 32 states have (on average 1.15625) internal successors, (37), 37 states have internal predecessors, (37), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-13 00:01:12,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 52 transitions. [2021-10-13 00:01:12,272 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 52 transitions. Word has length 38 [2021-10-13 00:01:12,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:01:12,273 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 52 transitions. [2021-10-13 00:01:12,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.4) internal successors, (48), 18 states have internal predecessors, (48), 7 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2021-10-13 00:01:12,273 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 52 transitions. [2021-10-13 00:01:12,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 00:01:12,274 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:01:12,274 INFO L512 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] [2021-10-13 00:01:12,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:01:12,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:01:12,475 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting disconnect_6Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-13 00:01:12,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:01:12,476 INFO L82 PathProgramCache]: Analyzing trace with hash 764373491, now seen corresponding path program 1 times [2021-10-13 00:01:12,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:01:12,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271059670] [2021-10-13 00:01:12,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:01:12,476 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:01:12,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:01:12,477 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:01:12,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 00:01:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:01:12,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:01:12,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:01:13,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:01:13,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:01:13,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-10-13 00:01:13,740 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 00:01:13,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-10-13 00:01:14,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:01:14,243 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:01:14,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271059670] [2021-10-13 00:01:14,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271059670] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:01:14,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:01:14,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 00:01:14,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685844915] [2021-10-13 00:01:14,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:01:14,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:01:14,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:01:14,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:01:14,245 INFO L87 Difference]: Start difference. First operand 53 states and 52 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 7 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2021-10-13 00:01:14,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:01:14,734 INFO L93 Difference]: Finished difference Result 52 states and 51 transitions. [2021-10-13 00:01:14,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:01:14,735 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 7 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 38 [2021-10-13 00:01:14,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:01:14,736 INFO L225 Difference]: With dead ends: 52 [2021-10-13 00:01:14,736 INFO L226 Difference]: Without dead ends: 52 [2021-10-13 00:01:14,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 589.4ms TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:01:14,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-13 00:01:14,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-13 00:01:14,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 32 states have (on average 1.125) internal successors, (36), 36 states have internal predecessors, (36), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-13 00:01:14,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 51 transitions. [2021-10-13 00:01:14,740 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 51 transitions. Word has length 38 [2021-10-13 00:01:14,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:01:14,740 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 51 transitions. [2021-10-13 00:01:14,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 7 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2021-10-13 00:01:14,741 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 51 transitions. [2021-10-13 00:01:14,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 00:01:14,742 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:01:14,742 INFO L512 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] [2021-10-13 00:01:14,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:01:14,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:01:14,955 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-13 00:01:14,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:01:14,955 INFO L82 PathProgramCache]: Analyzing trace with hash -2074225181, now seen corresponding path program 1 times [2021-10-13 00:01:14,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:01:14,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965781581] [2021-10-13 00:01:14,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:01:14,956 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:01:14,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:01:14,957 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:01:14,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 00:01:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:01:15,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 00:01:15,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:01:15,612 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 11 treesize of output 7 [2021-10-13 00:01:15,742 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 15 treesize of output 7 [2021-10-13 00:01:15,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:01:15,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:01:15,936 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 28 treesize of output 24 [2021-10-13 00:01:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:01:16,146 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:01:16,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965781581] [2021-10-13 00:01:16,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965781581] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:01:16,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:01:16,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 10 [2021-10-13 00:01:16,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258928212] [2021-10-13 00:01:16,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:01:16,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:01:16,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:01:16,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:01:16,148 INFO L87 Difference]: Start difference. First operand 52 states and 51 transitions. Second operand has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:01:16,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:01:16,532 INFO L93 Difference]: Finished difference Result 51 states and 50 transitions. [2021-10-13 00:01:16,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:01:16,533 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 39 [2021-10-13 00:01:16,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:01:16,534 INFO L225 Difference]: With dead ends: 51 [2021-10-13 00:01:16,534 INFO L226 Difference]: Without dead ends: 51 [2021-10-13 00:01:16,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 315.1ms TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:01:16,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-13 00:01:16,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-13 00:01:16,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.09375) internal successors, (35), 35 states have internal predecessors, (35), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-13 00:01:16,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 50 transitions. [2021-10-13 00:01:16,537 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 50 transitions. Word has length 39 [2021-10-13 00:01:16,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:01:16,538 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 50 transitions. [2021-10-13 00:01:16,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:01:16,538 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 50 transitions. [2021-10-13 00:01:16,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 00:01:16,539 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:01:16,539 INFO L512 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] [2021-10-13 00:01:16,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:01:16,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:01:16,752 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-13 00:01:16,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:01:16,752 INFO L82 PathProgramCache]: Analyzing trace with hash 123529298, now seen corresponding path program 1 times [2021-10-13 00:01:16,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:01:16,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432213751] [2021-10-13 00:01:16,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:01:16,753 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:01:16,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:01:16,753 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:01:16,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 00:01:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:01:17,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 00:01:17,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:01:17,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-13 00:01:18,089 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 23 treesize of output 11 [2021-10-13 00:01:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:01:18,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:01:18,615 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 28 treesize of output 24 [2021-10-13 00:01:19,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:01:19,244 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:01:19,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432213751] [2021-10-13 00:01:19,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432213751] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:01:19,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:01:19,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 11] imperfect sequences [] total 23 [2021-10-13 00:01:19,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930115916] [2021-10-13 00:01:19,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 00:01:19,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:01:19,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 00:01:19,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2021-10-13 00:01:19,246 INFO L87 Difference]: Start difference. First operand 51 states and 50 transitions. Second operand has 24 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 8 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2021-10-13 00:01:20,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:01:20,598 INFO L93 Difference]: Finished difference Result 50 states and 49 transitions. [2021-10-13 00:01:20,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:01:20,599 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 8 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) Word has length 40 [2021-10-13 00:01:20,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:01:20,600 INFO L225 Difference]: With dead ends: 50 [2021-10-13 00:01:20,600 INFO L226 Difference]: Without dead ends: 50 [2021-10-13 00:01:20,601 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1450.2ms TimeCoverageRelationStatistics Valid=223, Invalid=899, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 00:01:20,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-13 00:01:20,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-13 00:01:20,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.0625) internal successors, (34), 34 states have internal predecessors, (34), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-13 00:01:20,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 49 transitions. [2021-10-13 00:01:20,604 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 49 transitions. Word has length 40 [2021-10-13 00:01:20,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:01:20,605 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 49 transitions. [2021-10-13 00:01:20,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 8 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2021-10-13 00:01:20,605 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 49 transitions. [2021-10-13 00:01:20,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-13 00:01:20,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:01:20,606 INFO L512 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] [2021-10-13 00:01:20,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-13 00:01:20,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:01:20,817 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 82 more)] === [2021-10-13 00:01:20,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:01:20,817 INFO L82 PathProgramCache]: Analyzing trace with hash -465558587, now seen corresponding path program 1 times [2021-10-13 00:01:20,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:01:20,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035910716] [2021-10-13 00:01:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:01:20,818 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:01:20,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:01:20,819 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:01:20,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 00:01:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:01:21,266 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:01:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:01:21,355 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-13 00:01:21,355 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:01:21,356 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location disconnect_6Err4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:01:21,358 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-10-13 00:01:21,358 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-10-13 00:01:21,359 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-10-13 00:01:21,359 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-10-13 00:01:21,359 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-10-13 00:01:21,359 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-10-13 00:01:21,359 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-10-13 00:01:21,359 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-10-13 00:01:21,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-10-13 00:01:21,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-10-13 00:01:21,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-10-13 00:01:21,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-10-13 00:01:21,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-10-13 00:01:21,360 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-10-13 00:01:21,361 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-10-13 00:01:21,361 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-10-13 00:01:21,361 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-10-13 00:01:21,361 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-10-13 00:01:21,361 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-10-13 00:01:21,361 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-10-13 00:01:21,362 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-10-13 00:01:21,362 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-10-13 00:01:21,362 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-10-13 00:01:21,362 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-10-13 00:01:21,362 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-10-13 00:01:21,362 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-10-13 00:01:21,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-10-13 00:01:21,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-10-13 00:01:21,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-10-13 00:01:21,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-10-13 00:01:21,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-10-13 00:01:21,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-10-13 00:01:21,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-10-13 00:01:21,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-10-13 00:01:21,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-10-13 00:01:21,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-10-13 00:01:21,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-10-13 00:01:21,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-10-13 00:01:21,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-10-13 00:01:21,365 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-10-13 00:01:21,365 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err0REQUIRES_VIOLATION [2021-10-13 00:01:21,365 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err1REQUIRES_VIOLATION [2021-10-13 00:01:21,365 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:01:21,365 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err3ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:01:21,366 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:01:21,366 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:01:21,366 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:01:21,366 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe3_6Err7ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:01:21,366 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-10-13 00:01:21,367 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-10-13 00:01:21,367 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:01:21,367 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:01:21,367 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:01:21,367 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:01:21,367 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:01:21,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:01:21,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 00:01:21,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-10-13 00:01:21,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-10-13 00:01:21,368 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-10-13 00:01:21,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-10-13 00:01:21,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-10-13 00:01:21,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-10-13 00:01:21,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-10-13 00:01:21,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-10-13 00:01:21,369 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:01:21,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:01:21,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:01:21,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:01:21,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:01:21,370 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:01:21,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-10-13 00:01:21,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-10-13 00:01:21,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-10-13 00:01:21,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-10-13 00:01:21,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-10-13 00:01:21,371 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-10-13 00:01:21,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-10-13 00:01:21,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-10-13 00:01:21,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0REQUIRES_VIOLATION [2021-10-13 00:01:21,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1REQUIRES_VIOLATION [2021-10-13 00:01:21,372 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err0REQUIRES_VIOLATION [2021-10-13 00:01:21,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err1REQUIRES_VIOLATION [2021-10-13 00:01:21,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:01:21,373 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_6Err3ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:01:21,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 00:01:21,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:01:21,591 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:01:21,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:01:21 BoogieIcfgContainer [2021-10-13 00:01:21,642 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:01:21,643 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:01:21,643 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:01:21,643 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:01:21,643 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:08" (3/4) ... [2021-10-13 00:01:21,646 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 00:01:21,693 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:01:21,694 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:01:21,695 INFO L168 Benchmark]: Toolchain (without parser) took 135363.54 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 51.2 MB in the beginning and 27.3 MB in the end (delta: 23.9 MB). Peak memory consumption was 56.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:01:21,699 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 71.3 MB. Free memory is still 51.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:01:21,699 INFO L168 Benchmark]: CACSL2BoogieTranslator took 847.14 ms. Allocated memory is still 71.3 MB. Free memory was 51.1 MB in the beginning and 35.8 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:01:21,700 INFO L168 Benchmark]: Boogie Preprocessor took 148.64 ms. Allocated memory is still 71.3 MB. Free memory was 35.8 MB in the beginning and 31.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:01:21,700 INFO L168 Benchmark]: RCFGBuilder took 1545.56 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 30.8 MB in the beginning and 43.7 MB in the end (delta: -12.9 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:01:21,701 INFO L168 Benchmark]: TraceAbstraction took 132765.27 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 43.2 MB in the beginning and 29.5 MB in the end (delta: 13.7 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:01:21,701 INFO L168 Benchmark]: Witness Printer took 51.22 ms. Allocated memory is still 104.9 MB. Free memory was 29.5 MB in the beginning and 27.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:01:21,703 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 71.3 MB. Free memory is still 51.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 847.14 ms. Allocated memory is still 71.3 MB. Free memory was 51.1 MB in the beginning and 35.8 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 148.64 ms. Allocated memory is still 71.3 MB. Free memory was 35.8 MB in the beginning and 31.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1545.56 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 30.8 MB in the beginning and 43.7 MB in the end (delta: -12.9 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 132765.27 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 43.2 MB in the beginning and 29.5 MB in the end (delta: 13.7 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.1 GB. * Witness Printer took 51.22 ms. Allocated memory is still 104.9 MB. Free memory was 29.5 MB in the beginning and 27.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 782]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L784] struct A a6; VAL [\old(a6)=null, \old(a6)=null, \old(ldv_global_msg_list)=null, \old(ldv_global_msg_list)=null, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L793] CALL entry_point() VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L786] CALL, EXPR probe3_6(&a6) VAL [a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L764] int ret = - -3; VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, ret=3] [L765] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L765] RET, EXPR ldv_malloc(sizeof(int)) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, ldv_malloc(sizeof(int))={1:0}, ret=3] [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=3] [L768] CALL, EXPR f6() VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L758] return __VERIFIER_nondet_int(); [L768] RET, EXPR f6() VAL [a={3:0}, a={3:0}, a6={3:0}, f6()=0, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=3] [L768] ret = f6() [L769] COND FALSE !(ret<0) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L771] CALL, EXPR g6() VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L761] return __VERIFIER_nondet_int(); [L771] RET, EXPR g6() VAL [a={3:0}, a={3:0}, a6={3:0}, g6()=0, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L771] ret = g6() [L772] COND FALSE !(ret<0) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L774] a->p = p VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L775] free(p) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L775] free(p) VAL [a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L775] free(p) [L776] return 0; VAL [\result=0, a={3:0}, a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}, p={1:0}, ret=0] [L786] RET, EXPR probe3_6(&a6) VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}, probe3_6(&a6)=0] [L786] int ret = probe3_6(&a6); [L787] COND TRUE ret==0 VAL [a6={3:0}, ldv_global_msg_list={-2147483648:0}, ret=0] [L788] CALL disconnect_6(&a6) VAL [a={3:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L782] EXPR a->p VAL [a={3:0}, a={3:0}, a->p={1:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L782] free(a->p) VAL [a={3:0}, a={3:0}, a->p={1:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L782] free(a->p) VAL [a={3:0}, a={3:0}, a->p={1:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}] [L782] free(a->p) VAL [a={3:0}, a={3:0}, a->p={1:0}, a6={3:0}, ldv_global_msg_list={-2147483648:0}] - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 792]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 790]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 790]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 782]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 51 procedures, 379 locations, 86 error locations. Started 1 CEGAR loops. OverallTime: 132658.3ms, OverallIterations: 16, TraceHistogramMax: 1, EmptinessCheckTime: 29.5ms, AutomataDifference: 95468.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 790 SDtfs, 1229 SDslu, 2395 SDs, 0 SdLazy, 1903 SolverSat, 329 SolverUnsat, 37 SolverUnknown, 0 SolverNotchecked, 79737.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 873 GetRequests, 639 SyntacticMatches, 49 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 33861.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=139occurred in iteration=0, InterpolantAutomatonStates: 133, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 147.2ms AutomataMinimizationTime, 15 MinimizatonAttempts, 92 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 163.2ms SsaConstructionTime, 632.7ms SatisfiabilityAnalysisTime, 28832.5ms InterpolantComputationTime, 456 NumberOfCodeBlocks, 456 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 800 ConstructedInterpolants, 71 QuantifiedInterpolants, 6419 SizeOfPredicates, 72 NumberOfNonLiveVariables, 1767 ConjunctsInSsa, 161 ConjunctsInUnsatCore, 30 InterpolantComputations, 30 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 00:01:21,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7580017-ab79-4df3-be84-a14a2ce41265/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...