./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY --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 d11f955236406002afd026860cf5cae6834e26918579de44c447a4ac30cb678d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:35:31,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:35:31,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:35:31,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:35:31,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:35:31,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:35:31,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:35:31,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:35:31,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:35:31,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:35:31,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:35:31,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:35:31,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:35:31,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:35:31,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:35:31,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:35:31,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:35:31,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:35:31,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:35:31,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:35:31,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:35:31,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:35:31,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:35:31,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:35:31,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:35:31,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:35:31,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:35:31,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:35:31,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:35:31,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:35:31,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:35:31,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:35:31,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:35:31,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:35:31,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:35:31,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:35:31,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:35:31,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:35:31,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:35:31,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:35:31,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:35:31,683 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-07 08:35:31,729 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:35:31,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:35:31,732 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:35:31,732 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:35:31,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:35:31,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:35:31,740 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:35:31,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:35:31,740 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:35:31,740 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 08:35:31,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:35:31,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:35:31,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:35:31,742 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 08:35:31,742 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 08:35:31,743 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 08:35:31,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:35:31,743 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 08:35:31,743 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:35:31,744 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:35:31,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:35:31,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:35:31,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:35:31,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:35:31,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:35:31,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:35:31,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:35:31,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:35:31,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:35:31,747 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_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d11f955236406002afd026860cf5cae6834e26918579de44c447a4ac30cb678d [2021-11-07 08:35:31,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:35:32,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:35:32,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:35:32,017 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:35:32,018 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:35:32,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i [2021-11-07 08:35:32,100 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/data/c969dce64/4a79cc6a761946e0b9bf857ff0983617/FLAG826a24c66 [2021-11-07 08:35:32,659 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:35:32,659 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i [2021-11-07 08:35:32,675 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/data/c969dce64/4a79cc6a761946e0b9bf857ff0983617/FLAG826a24c66 [2021-11-07 08:35:32,946 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/data/c969dce64/4a79cc6a761946e0b9bf857ff0983617 [2021-11-07 08:35:32,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:35:32,953 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-07 08:35:32,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:35:32,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:35:32,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:35:32,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:35:32" (1/1) ... [2021-11-07 08:35:32,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49a46328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:35:32, skipping insertion in model container [2021-11-07 08:35:32,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:35:32" (1/1) ... [2021-11-07 08:35:32,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:35:33,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:35:33,448 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[33021,33034] [2021-11-07 08:35:33,601 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[44590,44603] [2021-11-07 08:35:33,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:35:33,625 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 08:35:33,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4c4080c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:35:33, skipping insertion in model container [2021-11-07 08:35:33,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:35:33,626 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-07 08:35:33,628 INFO L168 Benchmark]: Toolchain (without parser) took 673.91 ms. Allocated memory is still 109.1 MB. Free memory was 78.2 MB in the beginning and 71.2 MB in the end (delta: 6.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 08:35:33,628 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 109.1 MB. Free memory is still 63.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:35:33,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.04 ms. Allocated memory is still 109.1 MB. Free memory was 78.0 MB in the beginning and 71.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 08:35:33,631 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 109.1 MB. Free memory is still 63.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 671.04 ms. Allocated memory is still 109.1 MB. Free memory was 78.0 MB in the beginning and 71.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY --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 d11f955236406002afd026860cf5cae6834e26918579de44c447a4ac30cb678d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:35:35,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:35:35,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:35:35,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:35:35,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:35:35,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:35:35,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:35:35,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:35:35,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:35:35,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:35:35,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:35:35,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:35:35,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:35:35,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:35:35,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:35:35,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:35:35,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:35:35,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:35:35,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:35:35,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:35:35,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:35:35,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:35:35,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:35:35,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:35:35,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:35:35,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:35:35,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:35:35,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:35:35,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:35:35,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:35:35,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:35:35,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:35:35,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:35:35,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:35:35,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:35:35,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:35:35,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:35:35,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:35:35,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:35:35,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:35:35,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:35:35,794 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-07 08:35:35,819 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:35:35,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:35:35,820 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:35:35,820 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:35:35,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:35:35,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:35:35,821 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:35:35,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:35:35,822 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:35:35,822 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 08:35:35,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:35:35,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:35:35,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:35:35,823 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 08:35:35,823 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 08:35:35,823 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 08:35:35,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:35:35,823 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 08:35:35,824 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 08:35:35,824 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 08:35:35,824 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:35:35,824 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:35:35,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:35:35,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:35:35,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:35:35,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:35:35,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:35:35,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:35:35,826 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 08:35:35,826 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 08:35:35,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:35:35,826 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 08:35:35,826 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_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d11f955236406002afd026860cf5cae6834e26918579de44c447a4ac30cb678d [2021-11-07 08:35:36,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:35:36,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:35:36,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:35:36,179 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:35:36,180 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:35:36,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i [2021-11-07 08:35:36,250 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/data/044511309/307e468cedab4b4c980cc681d9eae9d5/FLAGb1bcc4767 [2021-11-07 08:35:36,848 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:35:36,848 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i [2021-11-07 08:35:36,874 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/data/044511309/307e468cedab4b4c980cc681d9eae9d5/FLAGb1bcc4767 [2021-11-07 08:35:37,108 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/data/044511309/307e468cedab4b4c980cc681d9eae9d5 [2021-11-07 08:35:37,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:35:37,115 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-07 08:35:37,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:35:37,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:35:37,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:35:37,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:35:37" (1/1) ... [2021-11-07 08:35:37,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a8e4e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:35:37, skipping insertion in model container [2021-11-07 08:35:37,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:35:37" (1/1) ... [2021-11-07 08:35:37,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:35:37,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:35:37,609 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[33021,33034] [2021-11-07 08:35:37,784 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[44590,44603] [2021-11-07 08:35:37,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:35:37,840 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 08:35:37,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:35:37,914 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[33021,33034] [2021-11-07 08:35:38,025 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[44590,44603] [2021-11-07 08:35:38,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:35:38,039 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:35:38,090 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[33021,33034] [2021-11-07 08:35:38,149 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test3-2.i[44590,44603] [2021-11-07 08:35:38,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:35:38,227 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:35:38,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:35:38 WrapperNode [2021-11-07 08:35:38,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:35:38,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:35:38,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:35:38,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:35:38,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:35:38" (1/1) ... [2021-11-07 08:35:38,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:35:38" (1/1) ... [2021-11-07 08:35:38,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:35:38" (1/1) ... [2021-11-07 08:35:38,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:35:38" (1/1) ... [2021-11-07 08:35:38,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:35:38" (1/1) ... [2021-11-07 08:35:38,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:35:38" (1/1) ... [2021-11-07 08:35:38,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:35:38" (1/1) ... [2021-11-07 08:35:38,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:35:38,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:35:38,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:35:38,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:35:38,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:35:38" (1/1) ... [2021-11-07 08:35:38,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:35:38,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:35:38,426 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:35:38,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:35:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-07 08:35:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:35:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-07 08:35:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-07 08:35:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-07 08:35:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-07 08:35:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-07 08:35:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-07 08:35:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-07 08:35:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-07 08:35:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-07 08:35:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-07 08:35:38,482 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-07 08:35:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-07 08:35:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-07 08:35:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-07 08:35:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-07 08:35:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 08:35:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-07 08:35:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-07 08:35:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 08:35:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-07 08:35:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-07 08:35:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-07 08:35:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-07 08:35:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-07 08:35:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-07 08:35:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-07 08:35:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-07 08:35:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-07 08:35:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-07 08:35:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-07 08:35:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-07 08:35:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-07 08:35:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-07 08:35:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-07 08:35:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-07 08:35:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-07 08:35:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-07 08:35:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-07 08:35:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-07 08:35:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-07 08:35:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-07 08:35:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-07 08:35:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-07 08:35:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-07 08:35:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-07 08:35:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-07 08:35:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-07 08:35:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-07 08:35:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-07 08:35:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-07 08:35:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-07 08:35:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-07 08:35:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-07 08:35:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-07 08:35:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-07 08:35:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-07 08:35:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-07 08:35:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-07 08:35:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-07 08:35:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-07 08:35:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-07 08:35:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-07 08:35:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-07 08:35:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-07 08:35:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-07 08:35:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-07 08:35:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-07 08:35:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-07 08:35:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-07 08:35:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-07 08:35:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-07 08:35:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-07 08:35:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-07 08:35:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-07 08:35:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-07 08:35:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-07 08:35:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-07 08:35:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-07 08:35:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-07 08:35:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-07 08:35:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-07 08:35:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-07 08:35:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-07 08:35:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-07 08:35:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-07 08:35:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-07 08:35:38,512 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-07 08:35:38,512 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-07 08:35:38,512 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-07 08:35:38,512 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-07 08:35:38,512 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-07 08:35:38,512 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-07 08:35:38,513 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-07 08:35:38,513 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-07 08:35:38,513 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-07 08:35:38,513 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-07 08:35:38,513 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-07 08:35:38,513 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-07 08:35:38,513 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-07 08:35:38,513 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-07 08:35:38,514 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-07 08:35:38,514 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-07 08:35:38,514 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-07 08:35:38,514 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-07 08:35:38,514 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-07 08:35:38,514 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-07 08:35:38,514 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-07 08:35:38,514 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-07 08:35:38,514 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-07 08:35:38,515 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-07 08:35:38,515 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-07 08:35:38,515 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-07 08:35:38,515 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-07 08:35:38,515 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-07 08:35:38,516 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-07 08:35:38,517 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-07 08:35:38,520 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-07 08:35:38,520 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-07 08:35:38,520 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-07 08:35:38,520 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-07 08:35:38,520 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-07 08:35:38,521 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-07 08:35:38,521 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-07 08:35:38,521 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-07 08:35:38,522 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-07 08:35:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-07 08:35:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-07 08:35:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-07 08:35:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-07 08:35:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-07 08:35:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-07 08:35:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-07 08:35:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-07 08:35:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-07 08:35:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-07 08:35:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-07 08:35:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-07 08:35:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-07 08:35:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-07 08:35:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-07 08:35:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-07 08:35:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-07 08:35:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-07 08:35:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-07 08:35:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-07 08:35:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-07 08:35:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-07 08:35:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-07 08:35:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-07 08:35:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-07 08:35:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-07 08:35:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-07 08:35:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-07 08:35:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-07 08:35:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-07 08:35:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-07 08:35:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-07 08:35:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-07 08:35:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-07 08:35:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-07 08:35:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-07 08:35:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-07 08:35:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-07 08:35:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-07 08:35:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-07 08:35:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-07 08:35:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-07 08:35:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-07 08:35:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-07 08:35:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-07 08:35:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-07 08:35:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-07 08:35:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-07 08:35:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:35:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-07 08:35:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-07 08:35:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-07 08:35:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:35:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 08:35:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 08:35:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 08:35:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:35:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:35:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-07 08:35:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:35:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-07 08:35:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 08:35:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:35:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-07 08:35:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 08:35:39,122 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 08:35:43,897 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:35:43,901 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-07 08:35:43,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:35:43 BoogieIcfgContainer [2021-11-07 08:35:43,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:35:43,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:35:43,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:35:43,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:35:43,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:35:37" (1/3) ... [2021-11-07 08:35:43,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a131ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:35:43, skipping insertion in model container [2021-11-07 08:35:43,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:35:38" (2/3) ... [2021-11-07 08:35:43,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a131ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:35:43, skipping insertion in model container [2021-11-07 08:35:43,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:35:43" (3/3) ... [2021-11-07 08:35:43,939 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test3-2.i [2021-11-07 08:35:43,943 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:35:43,944 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 639 error locations. [2021-11-07 08:35:43,994 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:35:44,006 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 08:35:44,007 INFO L340 AbstractCegarLoop]: Starting to check reachability of 639 error locations. [2021-11-07 08:35:44,063 INFO L276 IsEmpty]: Start isEmpty. Operand has 1279 states, 626 states have (on average 2.253993610223642) internal successors, (1411), 1267 states have internal predecessors, (1411), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-07 08:35:44,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 08:35:44,069 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:35:44,069 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:35:44,069 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:35:44,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:35:44,073 INFO L85 PathProgramCache]: Analyzing trace with hash 806083998, now seen corresponding path program 1 times [2021-11-07 08:35:44,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:35:44,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052849669] [2021-11-07 08:35:44,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:35:44,084 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:35:44,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:35:44,087 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:35:44,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 08:35:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:35:44,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:35:44,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:35:44,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 08:35:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:35:44,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:35:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:35:44,561 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:35:44,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052849669] [2021-11-07 08:35:44,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1052849669] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:35:44,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:35:44,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 08:35:44,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585269501] [2021-11-07 08:35:44,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:35:44,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:35:44,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:35:44,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:35:44,588 INFO L87 Difference]: Start difference. First operand has 1279 states, 626 states have (on average 2.253993610223642) internal successors, (1411), 1267 states have internal predecessors, (1411), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:35:46,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:35:46,895 INFO L93 Difference]: Finished difference Result 1451 states and 1536 transitions. [2021-11-07 08:35:46,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:35:46,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-07 08:35:46,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:35:46,923 INFO L225 Difference]: With dead ends: 1451 [2021-11-07 08:35:46,924 INFO L226 Difference]: Without dead ends: 1448 [2021-11-07 08:35:46,925 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:35:46,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2021-11-07 08:35:47,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1263. [2021-11-07 08:35:47,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 626 states have (on average 2.1070287539936103) internal successors, (1319), 1252 states have internal predecessors, (1319), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 08:35:47,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1340 transitions. [2021-11-07 08:35:47,050 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1340 transitions. Word has length 7 [2021-11-07 08:35:47,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:35:47,051 INFO L470 AbstractCegarLoop]: Abstraction has 1263 states and 1340 transitions. [2021-11-07 08:35:47,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:35:47,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1340 transitions. [2021-11-07 08:35:47,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 08:35:47,052 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:35:47,052 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:35:47,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:35:47,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:35:47,269 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:35:47,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:35:47,271 INFO L85 PathProgramCache]: Analyzing trace with hash 806083999, now seen corresponding path program 1 times [2021-11-07 08:35:47,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:35:47,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100282760] [2021-11-07 08:35:47,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:35:47,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:35:47,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:35:47,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:35:47,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 08:35:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:35:47,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:35:47,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:35:47,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 08:35:47,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:35:47,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:35:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:35:47,647 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:35:47,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100282760] [2021-11-07 08:35:47,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100282760] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:35:47,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:35:47,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 08:35:47,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641277877] [2021-11-07 08:35:47,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:35:47,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:35:47,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:35:47,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:35:47,651 INFO L87 Difference]: Start difference. First operand 1263 states and 1340 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:35:53,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:35:53,403 INFO L93 Difference]: Finished difference Result 1936 states and 2058 transitions. [2021-11-07 08:35:53,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:35:53,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-07 08:35:53,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:35:53,414 INFO L225 Difference]: With dead ends: 1936 [2021-11-07 08:35:53,415 INFO L226 Difference]: Without dead ends: 1936 [2021-11-07 08:35:53,415 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:35:53,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2021-11-07 08:35:53,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1298. [2021-11-07 08:35:53,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 670 states have (on average 2.0865671641791046) internal successors, (1398), 1287 states have internal predecessors, (1398), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 08:35:53,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 1419 transitions. [2021-11-07 08:35:53,462 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 1419 transitions. Word has length 7 [2021-11-07 08:35:53,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:35:53,462 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 1419 transitions. [2021-11-07 08:35:53,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:35:53,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 1419 transitions. [2021-11-07 08:35:53,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 08:35:53,464 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:35:53,464 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:35:53,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 08:35:53,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:35:53,676 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:35:53,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:35:53,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1330049549, now seen corresponding path program 1 times [2021-11-07 08:35:53,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:35:53,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145414436] [2021-11-07 08:35:53,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:35:53,684 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:35:53,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:35:53,688 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:35:53,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 08:35:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:35:53,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:35:53,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:35:53,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 08:35:53,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:35:53,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:35:53,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:35:53,999 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:35:53,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145414436] [2021-11-07 08:35:54,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145414436] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:35:54,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:35:54,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 08:35:54,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325739135] [2021-11-07 08:35:54,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:35:54,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:35:54,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:35:54,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:35:54,002 INFO L87 Difference]: Start difference. First operand 1298 states and 1419 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:35:55,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:35:55,970 INFO L93 Difference]: Finished difference Result 1626 states and 1772 transitions. [2021-11-07 08:35:55,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:35:55,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-07 08:35:55,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:35:55,981 INFO L225 Difference]: With dead ends: 1626 [2021-11-07 08:35:55,981 INFO L226 Difference]: Without dead ends: 1626 [2021-11-07 08:35:55,982 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:35:55,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2021-11-07 08:35:56,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1249. [2021-11-07 08:35:56,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 670 states have (on average 2.008955223880597) internal successors, (1346), 1238 states have internal predecessors, (1346), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 08:35:56,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1367 transitions. [2021-11-07 08:35:56,018 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1367 transitions. Word has length 12 [2021-11-07 08:35:56,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:35:56,018 INFO L470 AbstractCegarLoop]: Abstraction has 1249 states and 1367 transitions. [2021-11-07 08:35:56,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:35:56,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1367 transitions. [2021-11-07 08:35:56,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 08:35:56,019 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:35:56,019 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:35:56,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 08:35:56,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:35:56,231 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:35:56,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:35:56,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1330049550, now seen corresponding path program 1 times [2021-11-07 08:35:56,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:35:56,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745347146] [2021-11-07 08:35:56,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:35:56,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:35:56,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:35:56,234 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:35:56,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 08:35:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:35:56,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:35:56,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:35:56,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 08:35:56,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:35:56,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:35:56,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:35:56,634 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:35:56,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745347146] [2021-11-07 08:35:56,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745347146] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:35:56,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:35:56,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 08:35:56,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773633727] [2021-11-07 08:35:56,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:35:56,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:35:56,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:35:56,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:35:56,636 INFO L87 Difference]: Start difference. First operand 1249 states and 1367 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:02,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:36:02,226 INFO L93 Difference]: Finished difference Result 1669 states and 1779 transitions. [2021-11-07 08:36:02,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:36:02,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-07 08:36:02,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:36:02,235 INFO L225 Difference]: With dead ends: 1669 [2021-11-07 08:36:02,235 INFO L226 Difference]: Without dead ends: 1669 [2021-11-07 08:36:02,236 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:36:02,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2021-11-07 08:36:02,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1239. [2021-11-07 08:36:02,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 670 states have (on average 1.98955223880597) internal successors, (1333), 1228 states have internal predecessors, (1333), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 08:36:02,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1354 transitions. [2021-11-07 08:36:02,270 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1354 transitions. Word has length 12 [2021-11-07 08:36:02,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:36:02,270 INFO L470 AbstractCegarLoop]: Abstraction has 1239 states and 1354 transitions. [2021-11-07 08:36:02,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:02,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1354 transitions. [2021-11-07 08:36:02,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 08:36:02,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:36:02,271 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:36:02,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-07 08:36:02,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:36:02,483 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr526REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:36:02,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:36:02,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1636070505, now seen corresponding path program 1 times [2021-11-07 08:36:02,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:36:02,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956875068] [2021-11-07 08:36:02,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:36:02,484 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:36:02,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:36:02,485 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:36:02,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 08:36:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:36:02,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:36:02,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:36:02,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:02,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:36:02,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:02,904 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:36:02,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956875068] [2021-11-07 08:36:02,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1956875068] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:36:02,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:36:02,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 08:36:02,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754329600] [2021-11-07 08:36:02,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:36:02,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:36:02,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:36:02,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:36:02,906 INFO L87 Difference]: Start difference. First operand 1239 states and 1354 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:04,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:36:04,008 INFO L93 Difference]: Finished difference Result 1881 states and 2038 transitions. [2021-11-07 08:36:04,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:36:04,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-07 08:36:04,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:36:04,019 INFO L225 Difference]: With dead ends: 1881 [2021-11-07 08:36:04,020 INFO L226 Difference]: Without dead ends: 1881 [2021-11-07 08:36:04,020 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:36:04,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2021-11-07 08:36:04,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1479. [2021-11-07 08:36:04,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 910 states have (on average 1.9637362637362636) internal successors, (1787), 1468 states have internal predecessors, (1787), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 08:36:04,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 1808 transitions. [2021-11-07 08:36:04,088 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 1808 transitions. Word has length 15 [2021-11-07 08:36:04,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:36:04,089 INFO L470 AbstractCegarLoop]: Abstraction has 1479 states and 1808 transitions. [2021-11-07 08:36:04,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:04,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 1808 transitions. [2021-11-07 08:36:04,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 08:36:04,091 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:36:04,091 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:36:04,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 08:36:04,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:36:04,307 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr340REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:36:04,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:36:04,307 INFO L85 PathProgramCache]: Analyzing trace with hash -271696847, now seen corresponding path program 1 times [2021-11-07 08:36:04,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:36:04,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330990526] [2021-11-07 08:36:04,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:36:04,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:36:04,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:36:04,309 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:36:04,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 08:36:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:36:04,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:36:04,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:36:04,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:04,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:36:04,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:04,630 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:36:04,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330990526] [2021-11-07 08:36:04,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330990526] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:36:04,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:36:04,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 08:36:04,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985320335] [2021-11-07 08:36:04,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:36:04,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:36:04,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:36:04,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:36:04,632 INFO L87 Difference]: Start difference. First operand 1479 states and 1808 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:04,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:36:04,673 INFO L93 Difference]: Finished difference Result 1649 states and 1966 transitions. [2021-11-07 08:36:04,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:36:04,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-07 08:36:04,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:36:04,683 INFO L225 Difference]: With dead ends: 1649 [2021-11-07 08:36:04,683 INFO L226 Difference]: Without dead ends: 1649 [2021-11-07 08:36:04,684 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:36:04,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2021-11-07 08:36:04,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1419. [2021-11-07 08:36:04,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 874 states have (on average 1.9462242562929062) internal successors, (1701), 1408 states have internal predecessors, (1701), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 08:36:04,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 1722 transitions. [2021-11-07 08:36:04,720 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 1722 transitions. Word has length 17 [2021-11-07 08:36:04,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:36:04,721 INFO L470 AbstractCegarLoop]: Abstraction has 1419 states and 1722 transitions. [2021-11-07 08:36:04,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:04,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 1722 transitions. [2021-11-07 08:36:04,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 08:36:04,723 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:36:04,723 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:36:04,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 08:36:04,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:36:04,939 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr364REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:36:04,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:36:04,939 INFO L85 PathProgramCache]: Analyzing trace with hash 892362763, now seen corresponding path program 1 times [2021-11-07 08:36:04,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:36:04,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852423446] [2021-11-07 08:36:04,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:36:04,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:36:04,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:36:04,941 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:36:04,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 08:36:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:36:05,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:36:05,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:36:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:05,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:36:05,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:05,315 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:36:05,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852423446] [2021-11-07 08:36:05,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852423446] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:36:05,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:36:05,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 08:36:05,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767490015] [2021-11-07 08:36:05,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:36:05,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:36:05,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:36:05,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:36:05,318 INFO L87 Difference]: Start difference. First operand 1419 states and 1722 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:05,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:36:05,408 INFO L93 Difference]: Finished difference Result 1621 states and 1910 transitions. [2021-11-07 08:36:05,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:36:05,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-11-07 08:36:05,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:36:05,417 INFO L225 Difference]: With dead ends: 1621 [2021-11-07 08:36:05,417 INFO L226 Difference]: Without dead ends: 1621 [2021-11-07 08:36:05,418 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:36:05,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2021-11-07 08:36:05,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1389. [2021-11-07 08:36:05,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 858 states have (on average 1.9149184149184149) internal successors, (1643), 1378 states have internal predecessors, (1643), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 08:36:05,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1664 transitions. [2021-11-07 08:36:05,452 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1664 transitions. Word has length 19 [2021-11-07 08:36:05,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:36:05,452 INFO L470 AbstractCegarLoop]: Abstraction has 1389 states and 1664 transitions. [2021-11-07 08:36:05,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:05,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1664 transitions. [2021-11-07 08:36:05,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 08:36:05,453 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:36:05,453 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:36:05,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 08:36:05,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:36:05,666 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr637ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:36:05,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:36:05,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1468583665, now seen corresponding path program 1 times [2021-11-07 08:36:05,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:36:05,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568628106] [2021-11-07 08:36:05,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:36:05,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:36:05,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:36:05,668 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:36:05,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 08:36:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:36:05,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:36:05,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:36:05,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 08:36:05,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 08:36:05,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 08:36:06,012 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 08:36:06,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 08:36:06,092 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 08:36:06,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 08:36:06,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:06,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:36:06,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:06,237 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:36:06,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568628106] [2021-11-07 08:36:06,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568628106] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:36:06,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:36:06,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 08:36:06,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499583519] [2021-11-07 08:36:06,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:36:06,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:36:06,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:36:06,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:36:06,239 INFO L87 Difference]: Start difference. First operand 1389 states and 1664 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:08,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:36:08,295 INFO L93 Difference]: Finished difference Result 1832 states and 2168 transitions. [2021-11-07 08:36:08,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:36:08,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-11-07 08:36:08,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:36:08,306 INFO L225 Difference]: With dead ends: 1832 [2021-11-07 08:36:08,306 INFO L226 Difference]: Without dead ends: 1832 [2021-11-07 08:36:08,307 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:36:08,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2021-11-07 08:36:08,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1388. [2021-11-07 08:36:08,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 857 states have (on average 1.9148191365227538) internal successors, (1641), 1377 states have internal predecessors, (1641), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 08:36:08,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 1662 transitions. [2021-11-07 08:36:08,338 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 1662 transitions. Word has length 20 [2021-11-07 08:36:08,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:36:08,339 INFO L470 AbstractCegarLoop]: Abstraction has 1388 states and 1662 transitions. [2021-11-07 08:36:08,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:08,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 1662 transitions. [2021-11-07 08:36:08,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 08:36:08,340 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:36:08,340 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:36:08,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 08:36:08,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:36:08,563 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:36:08,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:36:08,563 INFO L85 PathProgramCache]: Analyzing trace with hash 833916409, now seen corresponding path program 1 times [2021-11-07 08:36:08,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:36:08,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249163389] [2021-11-07 08:36:08,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:36:08,564 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:36:08,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:36:08,566 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:36:08,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 08:36:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:36:08,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 08:36:08,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:36:08,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:08,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:36:08,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:08,904 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:36:08,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249163389] [2021-11-07 08:36:08,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249163389] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:36:08,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:36:08,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 08:36:08,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649672341] [2021-11-07 08:36:08,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:36:08,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:36:08,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:36:08,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:36:08,907 INFO L87 Difference]: Start difference. First operand 1388 states and 1662 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:08,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:36:08,929 INFO L93 Difference]: Finished difference Result 1328 states and 1576 transitions. [2021-11-07 08:36:08,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:36:08,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-07 08:36:08,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:36:08,937 INFO L225 Difference]: With dead ends: 1328 [2021-11-07 08:36:08,937 INFO L226 Difference]: Without dead ends: 1328 [2021-11-07 08:36:08,937 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:36:08,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2021-11-07 08:36:08,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1328. [2021-11-07 08:36:08,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 821 states have (on average 1.8940316686967114) internal successors, (1555), 1317 states have internal predecessors, (1555), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 08:36:08,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1576 transitions. [2021-11-07 08:36:08,966 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1576 transitions. Word has length 22 [2021-11-07 08:36:08,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:36:08,967 INFO L470 AbstractCegarLoop]: Abstraction has 1328 states and 1576 transitions. [2021-11-07 08:36:08,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:08,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1576 transitions. [2021-11-07 08:36:08,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 08:36:08,968 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:36:08,968 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:36:08,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 08:36:09,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:36:09,181 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:36:09,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:36:09,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1765216397, now seen corresponding path program 1 times [2021-11-07 08:36:09,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:36:09,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117149592] [2021-11-07 08:36:09,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:36:09,182 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:36:09,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:36:09,183 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:36:09,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 08:36:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:36:09,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:36:09,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:36:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:09,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:36:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:09,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:36:09,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117149592] [2021-11-07 08:36:09,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117149592] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:36:09,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:36:09,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 08:36:09,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926792679] [2021-11-07 08:36:09,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:36:09,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:36:09,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:36:09,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:36:09,581 INFO L87 Difference]: Start difference. First operand 1328 states and 1576 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:09,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:36:09,641 INFO L93 Difference]: Finished difference Result 1300 states and 1520 transitions. [2021-11-07 08:36:09,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:36:09,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-07 08:36:09,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:36:09,647 INFO L225 Difference]: With dead ends: 1300 [2021-11-07 08:36:09,647 INFO L226 Difference]: Without dead ends: 1300 [2021-11-07 08:36:09,648 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:36:09,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2021-11-07 08:36:09,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1298. [2021-11-07 08:36:09,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 805 states have (on average 1.8596273291925465) internal successors, (1497), 1287 states have internal predecessors, (1497), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 08:36:09,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 1518 transitions. [2021-11-07 08:36:09,675 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 1518 transitions. Word has length 24 [2021-11-07 08:36:09,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:36:09,675 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 1518 transitions. [2021-11-07 08:36:09,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:09,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 1518 transitions. [2021-11-07 08:36:09,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 08:36:09,677 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:36:09,677 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:36:09,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 08:36:09,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:36:09,890 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:36:09,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:36:09,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1075877825, now seen corresponding path program 1 times [2021-11-07 08:36:09,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:36:09,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901733423] [2021-11-07 08:36:09,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:36:09,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:36:09,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:36:09,893 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:36:09,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 08:36:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:36:10,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:36:10,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:36:10,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 08:36:10,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:10,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:36:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:10,562 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:36:10,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901733423] [2021-11-07 08:36:10,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901733423] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:36:10,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:36:10,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 08:36:10,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390309777] [2021-11-07 08:36:10,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:36:10,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:36:10,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:36:10,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:36:10,564 INFO L87 Difference]: Start difference. First operand 1298 states and 1518 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:13,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:36:13,323 INFO L93 Difference]: Finished difference Result 1888 states and 2232 transitions. [2021-11-07 08:36:13,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:36:13,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-07 08:36:13,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:36:13,330 INFO L225 Difference]: With dead ends: 1888 [2021-11-07 08:36:13,331 INFO L226 Difference]: Without dead ends: 1888 [2021-11-07 08:36:13,331 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:36:13,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2021-11-07 08:36:13,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1294. [2021-11-07 08:36:13,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 805 states have (on average 1.8496894409937887) internal successors, (1489), 1283 states have internal predecessors, (1489), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 08:36:13,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 1510 transitions. [2021-11-07 08:36:13,358 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 1510 transitions. Word has length 38 [2021-11-07 08:36:13,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:36:13,359 INFO L470 AbstractCegarLoop]: Abstraction has 1294 states and 1510 transitions. [2021-11-07 08:36:13,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:13,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 1510 transitions. [2021-11-07 08:36:13,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 08:36:13,360 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:36:13,361 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:36:13,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-07 08:36:13,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:36:13,573 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:36:13,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:36:13,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1075877826, now seen corresponding path program 1 times [2021-11-07 08:36:13,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:36:13,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309980535] [2021-11-07 08:36:13,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:36:13,574 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:36:13,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:36:13,575 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:36:13,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 08:36:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:36:13,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:36:13,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:36:14,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 08:36:14,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:14,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:36:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:14,850 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:36:14,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309980535] [2021-11-07 08:36:14,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309980535] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:36:14,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:36:14,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 08:36:14,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563388359] [2021-11-07 08:36:14,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:36:14,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:36:14,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:36:14,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:36:14,852 INFO L87 Difference]: Start difference. First operand 1294 states and 1510 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:22,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:36:22,388 INFO L93 Difference]: Finished difference Result 2013 states and 2334 transitions. [2021-11-07 08:36:22,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:36:22,391 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-07 08:36:22,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:36:22,398 INFO L225 Difference]: With dead ends: 2013 [2021-11-07 08:36:22,399 INFO L226 Difference]: Without dead ends: 2013 [2021-11-07 08:36:22,399 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:36:22,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2021-11-07 08:36:22,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1290. [2021-11-07 08:36:22,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 805 states have (on average 1.839751552795031) internal successors, (1481), 1279 states have internal predecessors, (1481), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 08:36:22,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1502 transitions. [2021-11-07 08:36:22,425 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1502 transitions. Word has length 38 [2021-11-07 08:36:22,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:36:22,425 INFO L470 AbstractCegarLoop]: Abstraction has 1290 states and 1502 transitions. [2021-11-07 08:36:22,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:22,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1502 transitions. [2021-11-07 08:36:22,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 08:36:22,427 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:36:22,427 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:36:22,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 08:36:22,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:36:22,640 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:36:22,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:36:22,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1047493696, now seen corresponding path program 1 times [2021-11-07 08:36:22,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:36:22,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123651658] [2021-11-07 08:36:22,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:36:22,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:36:22,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:36:22,645 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:36:22,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 08:36:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:36:23,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:36:23,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:36:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:23,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:36:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:23,490 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:36:23,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123651658] [2021-11-07 08:36:23,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123651658] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:36:23,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:36:23,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 08:36:23,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777098230] [2021-11-07 08:36:23,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:36:23,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:36:23,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:36:23,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:36:23,492 INFO L87 Difference]: Start difference. First operand 1290 states and 1502 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:23,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:36:23,559 INFO L93 Difference]: Finished difference Result 1278 states and 1482 transitions. [2021-11-07 08:36:23,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:36:23,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-11-07 08:36:23,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:36:23,569 INFO L225 Difference]: With dead ends: 1278 [2021-11-07 08:36:23,569 INFO L226 Difference]: Without dead ends: 1278 [2021-11-07 08:36:23,569 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:36:23,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2021-11-07 08:36:23,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1278. [2021-11-07 08:36:23,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 793 states have (on average 1.8423707440100883) internal successors, (1461), 1267 states have internal predecessors, (1461), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 08:36:23,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1482 transitions. [2021-11-07 08:36:23,597 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1482 transitions. Word has length 56 [2021-11-07 08:36:23,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:36:23,597 INFO L470 AbstractCegarLoop]: Abstraction has 1278 states and 1482 transitions. [2021-11-07 08:36:23,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:23,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1482 transitions. [2021-11-07 08:36:23,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 08:36:23,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:36:23,600 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:36:23,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 08:36:23,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:36:23,814 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:36:23,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:36:23,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1905952116, now seen corresponding path program 1 times [2021-11-07 08:36:23,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:36:23,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117592055] [2021-11-07 08:36:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:36:23,816 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:36:23,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:36:23,817 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:36:23,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 08:36:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:36:24,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 08:36:24,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:36:24,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 08:36:24,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 08:36:25,432 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 08:36:25,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-07 08:36:25,455 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 08:36:25,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-07 08:36:25,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:25,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:36:32,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:32,075 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:36:32,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117592055] [2021-11-07 08:36:32,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117592055] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:36:32,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:36:32,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 08:36:32,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745326276] [2021-11-07 08:36:32,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:36:32,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:36:32,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:36:32,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-07 08:36:32,078 INFO L87 Difference]: Start difference. First operand 1278 states and 1482 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:51,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:36:51,632 INFO L93 Difference]: Finished difference Result 2073 states and 2523 transitions. [2021-11-07 08:36:51,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:36:51,635 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-11-07 08:36:51,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:36:51,644 INFO L225 Difference]: With dead ends: 2073 [2021-11-07 08:36:51,644 INFO L226 Difference]: Without dead ends: 2073 [2021-11-07 08:36:51,644 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-07 08:36:51,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2021-11-07 08:36:51,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 1240. [2021-11-07 08:36:51,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 793 states have (on average 1.794451450189155) internal successors, (1423), 1229 states have internal predecessors, (1423), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 08:36:51,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1444 transitions. [2021-11-07 08:36:51,671 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1444 transitions. Word has length 64 [2021-11-07 08:36:51,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:36:51,671 INFO L470 AbstractCegarLoop]: Abstraction has 1240 states and 1444 transitions. [2021-11-07 08:36:51,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:51,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1444 transitions. [2021-11-07 08:36:51,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 08:36:51,673 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:36:51,673 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:36:51,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 08:36:51,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:36:51,889 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:36:51,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:36:51,890 INFO L85 PathProgramCache]: Analyzing trace with hash -655072709, now seen corresponding path program 1 times [2021-11-07 08:36:51,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:36:51,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756201106] [2021-11-07 08:36:51,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:36:51,891 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:36:51,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:36:51,892 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:36:51,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 08:36:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:36:52,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:36:52,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:36:52,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 08:36:52,705 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 22 treesize of output 18 [2021-11-07 08:36:52,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-07 08:36:52,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:52,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:36:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:52,973 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:36:52,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756201106] [2021-11-07 08:36:52,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756201106] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:36:52,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:36:52,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 08:36:52,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524275737] [2021-11-07 08:36:52,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:36:52,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:36:52,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:36:52,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:36:52,975 INFO L87 Difference]: Start difference. First operand 1240 states and 1444 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:57,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:36:57,009 INFO L93 Difference]: Finished difference Result 1239 states and 1443 transitions. [2021-11-07 08:36:57,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:36:57,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-07 08:36:57,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:36:57,017 INFO L225 Difference]: With dead ends: 1239 [2021-11-07 08:36:57,017 INFO L226 Difference]: Without dead ends: 1239 [2021-11-07 08:36:57,017 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:36:57,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-11-07 08:36:57,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1239. [2021-11-07 08:36:57,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 793 states have (on average 1.7931904161412358) internal successors, (1422), 1228 states have internal predecessors, (1422), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 08:36:57,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1443 transitions. [2021-11-07 08:36:57,041 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1443 transitions. Word has length 69 [2021-11-07 08:36:57,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:36:57,049 INFO L470 AbstractCegarLoop]: Abstraction has 1239 states and 1443 transitions. [2021-11-07 08:36:57,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:36:57,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1443 transitions. [2021-11-07 08:36:57,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 08:36:57,050 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:36:57,051 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:36:57,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 08:36:57,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:36:57,267 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:36:57,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:36:57,267 INFO L85 PathProgramCache]: Analyzing trace with hash -655072708, now seen corresponding path program 1 times [2021-11-07 08:36:57,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:36:57,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289101695] [2021-11-07 08:36:57,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:36:57,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:36:57,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:36:57,270 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:36:57,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 08:36:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:36:57,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 08:36:57,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:36:57,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 08:36:57,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-07 08:36:57,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 08:36:58,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-07 08:36:58,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-07 08:36:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:58,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:36:58,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:36:58,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:36:58,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289101695] [2021-11-07 08:36:58,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [289101695] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:36:58,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:36:58,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 08:36:58,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136424726] [2021-11-07 08:36:58,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:36:58,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:36:58,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:36:58,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:36:58,496 INFO L87 Difference]: Start difference. First operand 1239 states and 1443 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:37:10,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:37:10,280 INFO L93 Difference]: Finished difference Result 1238 states and 1442 transitions. [2021-11-07 08:37:10,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:37:10,281 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-07 08:37:10,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:37:10,287 INFO L225 Difference]: With dead ends: 1238 [2021-11-07 08:37:10,288 INFO L226 Difference]: Without dead ends: 1238 [2021-11-07 08:37:10,288 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:37:10,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2021-11-07 08:37:10,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1238. [2021-11-07 08:37:10,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 792 states have (on average 1.7941919191919191) internal successors, (1421), 1227 states have internal predecessors, (1421), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 08:37:10,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1442 transitions. [2021-11-07 08:37:10,304 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1442 transitions. Word has length 69 [2021-11-07 08:37:10,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:37:10,304 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1442 transitions. [2021-11-07 08:37:10,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 08:37:10,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1442 transitions. [2021-11-07 08:37:10,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 08:37:10,305 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:37:10,305 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:37:10,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 08:37:10,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:37:10,506 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:37:10,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:37:10,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1548642594, now seen corresponding path program 1 times [2021-11-07 08:37:10,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:37:10,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412198353] [2021-11-07 08:37:10,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:37:10,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:37:10,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:37:10,507 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:37:10,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 08:37:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:37:11,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:37:11,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:37:11,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:37:11,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:37:11,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:37:11,443 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:37:11,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412198353] [2021-11-07 08:37:11,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412198353] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:37:11,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:37:11,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 08:37:11,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498294069] [2021-11-07 08:37:11,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:37:11,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:37:11,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:37:11,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:37:11,445 INFO L87 Difference]: Start difference. First operand 1238 states and 1442 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 08:37:11,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:37:11,551 INFO L93 Difference]: Finished difference Result 1248 states and 1455 transitions. [2021-11-07 08:37:11,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:37:11,552 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2021-11-07 08:37:11,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:37:11,558 INFO L225 Difference]: With dead ends: 1248 [2021-11-07 08:37:11,559 INFO L226 Difference]: Without dead ends: 1248 [2021-11-07 08:37:11,559 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:37:11,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-11-07 08:37:11,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1248. [2021-11-07 08:37:11,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 800 states have (on average 1.79125) internal successors, (1433), 1236 states have internal predecessors, (1433), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-07 08:37:11,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1455 transitions. [2021-11-07 08:37:11,582 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1455 transitions. Word has length 77 [2021-11-07 08:37:11,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:37:11,583 INFO L470 AbstractCegarLoop]: Abstraction has 1248 states and 1455 transitions. [2021-11-07 08:37:11,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 08:37:11,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1455 transitions. [2021-11-07 08:37:11,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 08:37:11,584 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:37:11,584 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:37:11,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 08:37:11,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:37:11,799 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:37:11,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:37:11,800 INFO L85 PathProgramCache]: Analyzing trace with hash 107741602, now seen corresponding path program 1 times [2021-11-07 08:37:11,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:37:11,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139543313] [2021-11-07 08:37:11,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:37:11,800 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:37:11,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:37:11,802 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:37:11,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 08:37:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:37:12,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:37:12,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:37:12,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:37:12,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:37:13,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:37:13,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:37:13,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139543313] [2021-11-07 08:37:13,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139543313] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 08:37:13,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:37:13,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-07 08:37:13,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182641933] [2021-11-07 08:37:13,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:37:13,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:37:13,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:37:13,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:37:13,101 INFO L87 Difference]: Start difference. First operand 1248 states and 1455 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 08:37:13,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:37:13,571 INFO L93 Difference]: Finished difference Result 1262 states and 1473 transitions. [2021-11-07 08:37:13,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 08:37:13,573 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 79 [2021-11-07 08:37:13,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:37:13,579 INFO L225 Difference]: With dead ends: 1262 [2021-11-07 08:37:13,580 INFO L226 Difference]: Without dead ends: 1258 [2021-11-07 08:37:13,580 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-07 08:37:13,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2021-11-07 08:37:13,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1254. [2021-11-07 08:37:13,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 806 states have (on average 1.7878411910669976) internal successors, (1441), 1242 states have internal predecessors, (1441), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-07 08:37:13,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1463 transitions. [2021-11-07 08:37:13,614 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1463 transitions. Word has length 79 [2021-11-07 08:37:13,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:37:13,615 INFO L470 AbstractCegarLoop]: Abstraction has 1254 states and 1463 transitions. [2021-11-07 08:37:13,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 08:37:13,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1463 transitions. [2021-11-07 08:37:13,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 08:37:13,616 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:37:13,617 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:37:13,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 08:37:13,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:37:13,833 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:37:13,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:37:13,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1478677154, now seen corresponding path program 2 times [2021-11-07 08:37:13,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:37:13,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088609606] [2021-11-07 08:37:13,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:37:13,835 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:37:13,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:37:13,836 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:37:13,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 08:37:14,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:37:14,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:37:14,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 08:37:14,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:37:15,090 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:37:15,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:37:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:37:15,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:37:15,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088609606] [2021-11-07 08:37:15,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088609606] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 08:37:15,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:37:15,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-07 08:37:15,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980842267] [2021-11-07 08:37:15,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 08:37:15,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:37:15,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 08:37:15,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-07 08:37:15,736 INFO L87 Difference]: Start difference. First operand 1254 states and 1463 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 08:37:17,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:37:17,437 INFO L93 Difference]: Finished difference Result 1282 states and 1501 transitions. [2021-11-07 08:37:17,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-07 08:37:17,438 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 83 [2021-11-07 08:37:17,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:37:17,443 INFO L225 Difference]: With dead ends: 1282 [2021-11-07 08:37:17,443 INFO L226 Difference]: Without dead ends: 1278 [2021-11-07 08:37:17,444 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 08:37:17,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2021-11-07 08:37:17,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1266. [2021-11-07 08:37:17,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 818 states have (on average 1.7811735941320292) internal successors, (1457), 1254 states have internal predecessors, (1457), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-07 08:37:17,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1479 transitions. [2021-11-07 08:37:17,469 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1479 transitions. Word has length 83 [2021-11-07 08:37:17,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:37:17,469 INFO L470 AbstractCegarLoop]: Abstraction has 1266 states and 1479 transitions. [2021-11-07 08:37:17,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 08:37:17,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1479 transitions. [2021-11-07 08:37:17,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 08:37:17,470 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:37:17,471 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:37:17,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 08:37:17,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:37:17,688 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:37:17,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:37:17,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2053043362, now seen corresponding path program 3 times [2021-11-07 08:37:17,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:37:17,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057717745] [2021-11-07 08:37:17,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:37:17,689 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:37:17,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:37:17,690 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:37:17,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-07 08:37:18,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-07 08:37:18,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:37:18,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 08:37:18,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:37:19,550 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:37:19,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:37:21,666 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:37:21,667 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:37:21,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057717745] [2021-11-07 08:37:21,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057717745] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 08:37:21,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:37:21,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-07 08:37:21,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701096577] [2021-11-07 08:37:21,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-07 08:37:21,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:37:21,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-07 08:37:21,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 08:37:21,669 INFO L87 Difference]: Start difference. First operand 1266 states and 1479 transitions. Second operand has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 08:37:29,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:37:29,325 INFO L93 Difference]: Finished difference Result 1322 states and 1563 transitions. [2021-11-07 08:37:29,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-07 08:37:29,327 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 91 [2021-11-07 08:37:29,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:37:29,331 INFO L225 Difference]: With dead ends: 1322 [2021-11-07 08:37:29,331 INFO L226 Difference]: Without dead ends: 1316 [2021-11-07 08:37:29,333 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-07 08:37:29,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2021-11-07 08:37:29,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1290. [2021-11-07 08:37:29,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 842 states have (on average 1.7672209026128265) internal successors, (1488), 1278 states have internal predecessors, (1488), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-07 08:37:29,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1510 transitions. [2021-11-07 08:37:29,357 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1510 transitions. Word has length 91 [2021-11-07 08:37:29,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:37:29,358 INFO L470 AbstractCegarLoop]: Abstraction has 1290 states and 1510 transitions. [2021-11-07 08:37:29,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 08:37:29,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1510 transitions. [2021-11-07 08:37:29,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 08:37:29,359 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:37:29,359 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:37:29,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-11-07 08:37:29,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:37:29,597 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:37:29,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:37:29,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1896954018, now seen corresponding path program 4 times [2021-11-07 08:37:29,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:37:29,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182606468] [2021-11-07 08:37:29,598 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 08:37:29,598 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:37:29,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:37:29,599 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:37:29,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 08:37:30,351 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 08:37:30,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:37:30,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 08:37:30,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:37:31,705 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:37:31,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:37:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:37:36,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:37:36,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182606468] [2021-11-07 08:37:36,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182606468] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 08:37:36,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:37:36,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-07 08:37:36,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632439867] [2021-11-07 08:37:36,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-07 08:37:36,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:37:36,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-07 08:37:36,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-07 08:37:36,167 INFO L87 Difference]: Start difference. First operand 1290 states and 1510 transitions. Second operand has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 08:37:51,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:37:51,399 INFO L93 Difference]: Finished difference Result 1382 states and 1630 transitions. [2021-11-07 08:37:51,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-07 08:37:51,402 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 107 [2021-11-07 08:37:51,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:37:51,406 INFO L225 Difference]: With dead ends: 1382 [2021-11-07 08:37:51,406 INFO L226 Difference]: Without dead ends: 1378 [2021-11-07 08:37:51,414 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-07 08:37:51,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2021-11-07 08:37:51,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1320. [2021-11-07 08:37:51,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 872 states have (on average 1.7591743119266054) internal successors, (1534), 1308 states have internal predecessors, (1534), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-07 08:37:51,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1556 transitions. [2021-11-07 08:37:51,447 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1556 transitions. Word has length 107 [2021-11-07 08:37:51,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:37:51,447 INFO L470 AbstractCegarLoop]: Abstraction has 1320 states and 1556 transitions. [2021-11-07 08:37:51,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-07 08:37:51,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1556 transitions. [2021-11-07 08:37:51,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 08:37:51,449 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:37:51,449 INFO L513 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:37:51,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-07 08:37:51,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:37:51,663 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 635 more)] === [2021-11-07 08:37:51,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:37:51,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1816175650, now seen corresponding path program 5 times [2021-11-07 08:37:51,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:37:51,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758689990] [2021-11-07 08:37:51,664 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:37:51,664 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:37:51,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:37:51,665 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:37:51,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07fbfdcf-d3a0-4480-a1e4-099ffd872cfc/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 08:37:53,494 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-07 08:37:53,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:37:53,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-07 08:37:53,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:37:53,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 08:37:53,850 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 08:37:53,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-11-07 08:37:53,889 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 26 treesize of output 22 [2021-11-07 08:37:54,062 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 36 treesize of output 24