./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0234-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0234-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a645958c16cc940658b53821ab7b3c3bff1f224 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0234-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a645958c16cc940658b53821ab7b3c3bff1f224 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:57:58,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:57:58,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:57:58,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:57:58,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:57:58,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:57:58,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:57:58,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:57:58,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:57:58,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:57:58,512 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:57:58,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:57:58,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:57:58,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:57:58,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:57:58,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:57:58,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:57:58,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:57:58,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:57:58,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:57:58,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:57:58,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:57:58,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:57:58,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:57:58,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:57:58,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:57:58,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:57:58,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:57:58,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:57:58,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:57:58,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:57:58,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:57:58,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:57:58,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:57:58,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:57:58,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:57:58,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:57:58,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:57:58,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:57:58,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:57:58,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:57:58,559 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-13 00:57:58,612 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:57:58,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:57:58,614 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:57:58,614 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:57:58,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:57:58,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:57:58,619 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:57:58,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:57:58,621 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:57:58,621 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:57:58,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:57:58,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:57:58,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:57:58,623 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:57:58,624 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:57:58,624 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:57:58,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:57:58,624 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:57:58,624 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:57:58,625 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:57:58,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:57:58,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:57:58,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:57:58,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:57:58,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:57:58,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:57:58,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:57:58,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:57:58,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:57:58,629 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_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a645958c16cc940658b53821ab7b3c3bff1f224 [2021-10-13 00:57:58,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:57:58,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:57:58,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:57:58,985 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:57:58,987 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:57:58,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/memsafety/test-0234-2.i [2021-10-13 00:57:59,069 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/data/cda0ca9d1/fc900ba60cb8459b874cad25f8f83a37/FLAG21af23556 [2021-10-13 00:57:59,819 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:57:59,820 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/sv-benchmarks/c/memsafety/test-0234-2.i [2021-10-13 00:57:59,835 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/data/cda0ca9d1/fc900ba60cb8459b874cad25f8f83a37/FLAG21af23556 [2021-10-13 00:58:00,061 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/data/cda0ca9d1/fc900ba60cb8459b874cad25f8f83a37 [2021-10-13 00:58:00,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:58:00,077 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:58:00,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:58:00,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:58:00,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:58:00,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:58:00" (1/1) ... [2021-10-13 00:58:00,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6791618f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:00, skipping insertion in model container [2021-10-13 00:58:00,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:58:00" (1/1) ... [2021-10-13 00:58:00,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:58:00,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:58:00,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:58:00,636 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:58:00,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:58:00,772 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:58:00,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:00 WrapperNode [2021-10-13 00:58:00,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:58:00,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:58:00,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:58:00,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:58:00,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:00" (1/1) ... [2021-10-13 00:58:00,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:00" (1/1) ... [2021-10-13 00:58:00,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:00" (1/1) ... [2021-10-13 00:58:00,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:00" (1/1) ... [2021-10-13 00:58:00,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:00" (1/1) ... [2021-10-13 00:58:00,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:00" (1/1) ... [2021-10-13 00:58:00,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:00" (1/1) ... [2021-10-13 00:58:00,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:58:00,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:58:00,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:58:00,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:58:00,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:00" (1/1) ... [2021-10-13 00:58:00,929 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:58:00,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:58:00,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:58:00,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:58:00,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:58:01,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:58:01,000 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-13 00:58:01,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 00:58:01,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 00:58:01,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-13 00:58:01,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-13 00:58:01,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-13 00:58:01,001 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2021-10-13 00:58:01,002 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2021-10-13 00:58:01,002 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_insert [2021-10-13 00:58:01,002 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_insert [2021-10-13 00:58:01,002 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_insert [2021-10-13 00:58:01,003 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_insert [2021-10-13 00:58:01,003 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_insert [2021-10-13 00:58:01,003 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_destroy [2021-10-13 00:58:01,003 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_destroy [2021-10-13 00:58:01,003 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_destroy [2021-10-13 00:58:01,004 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_destroy [2021-10-13 00:58:01,004 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2021-10-13 00:58:01,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:58:01,004 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-13 00:58:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:58:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-13 00:58:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-13 00:58:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-13 00:58:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-13 00:58:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:58:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 00:58:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 00:58:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 00:58:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 00:58:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 00:58:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 00:58:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 00:58:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 00:58:01,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 00:58:01,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 00:58:01,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 00:58:01,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 00:58:01,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 00:58:01,009 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 00:58:01,009 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 00:58:01,009 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 00:58:01,009 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 00:58:01,009 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 00:58:01,010 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-13 00:58:01,010 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-13 00:58:01,010 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-13 00:58:01,010 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 00:58:01,011 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 00:58:01,011 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 00:58:01,011 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 00:58:01,011 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 00:58:01,011 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 00:58:01,012 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 00:58:01,012 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 00:58:01,012 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 00:58:01,012 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 00:58:01,012 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 00:58:01,013 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 00:58:01,013 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 00:58:01,013 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 00:58:01,013 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 00:58:01,013 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 00:58:01,014 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 00:58:01,014 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 00:58:01,014 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 00:58:01,014 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 00:58:01,014 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 00:58:01,015 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 00:58:01,015 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 00:58:01,015 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 00:58:01,015 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 00:58:01,015 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 00:58:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 00:58:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 00:58:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 00:58:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 00:58:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 00:58:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 00:58:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 00:58:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 00:58:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 00:58:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 00:58:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 00:58:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 00:58:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 00:58:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 00:58:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 00:58:01,019 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 00:58:01,019 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 00:58:01,019 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 00:58:01,019 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 00:58:01,019 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 00:58:01,019 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 00:58:01,020 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 00:58:01,020 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 00:58:01,020 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 00:58:01,020 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 00:58:01,020 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 00:58:01,021 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 00:58:01,021 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 00:58:01,021 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 00:58:01,021 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 00:58:01,021 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 00:58:01,021 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 00:58:01,022 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 00:58:01,022 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 00:58:01,022 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 00:58:01,022 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 00:58:01,022 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 00:58:01,023 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 00:58:01,023 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 00:58:01,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 00:58:01,023 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 00:58:01,023 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 00:58:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 00:58:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 00:58:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 00:58:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 00:58:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 00:58:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 00:58:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 00:58:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 00:58:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 00:58:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 00:58:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 00:58:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 00:58:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 00:58:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 00:58:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 00:58:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 00:58:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 00:58:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-13 00:58:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-13 00:58:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-13 00:58:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-13 00:58:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-13 00:58:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-13 00:58:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-13 00:58:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-13 00:58:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-13 00:58:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-13 00:58:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-13 00:58:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-13 00:58:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-13 00:58:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-13 00:58:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-13 00:58:01,030 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-13 00:58:01,030 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-13 00:58:01,030 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-13 00:58:01,030 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-13 00:58:01,030 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-13 00:58:01,030 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-13 00:58:01,031 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-13 00:58:01,031 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-13 00:58:01,031 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-13 00:58:01,031 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-13 00:58:01,031 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-13 00:58:01,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-13 00:58:01,032 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-13 00:58:01,032 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-13 00:58:01,032 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-13 00:58:01,032 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-13 00:58:01,032 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-13 00:58:01,033 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-13 00:58:01,033 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-13 00:58:01,033 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-13 00:58:01,033 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-13 00:58:01,033 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-13 00:58:01,033 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-13 00:58:01,034 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-10-13 00:58:01,034 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-10-13 00:58:01,034 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-13 00:58:01,034 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-13 00:58:01,034 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-10-13 00:58:01,035 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-10-13 00:58:01,035 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-10-13 00:58:01,035 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-13 00:58:01,035 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-13 00:58:01,035 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-13 00:58:01,035 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-13 00:58:01,036 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-13 00:58:01,036 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-13 00:58:01,036 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2021-10-13 00:58:01,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 00:58:01,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-13 00:58:01,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 00:58:01,037 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2021-10-13 00:58:01,037 INFO L130 BoogieDeclarations]: Found specification of procedure l4_insert [2021-10-13 00:58:01,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 00:58:01,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 00:58:01,037 INFO L130 BoogieDeclarations]: Found specification of procedure l3_insert [2021-10-13 00:58:01,037 INFO L130 BoogieDeclarations]: Found specification of procedure l2_insert [2021-10-13 00:58:01,038 INFO L130 BoogieDeclarations]: Found specification of procedure l1_insert [2021-10-13 00:58:01,038 INFO L130 BoogieDeclarations]: Found specification of procedure l0_insert [2021-10-13 00:58:01,038 INFO L130 BoogieDeclarations]: Found specification of procedure l4_destroy [2021-10-13 00:58:01,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:58:01,038 INFO L130 BoogieDeclarations]: Found specification of procedure l3_destroy [2021-10-13 00:58:01,038 INFO L130 BoogieDeclarations]: Found specification of procedure l2_destroy [2021-10-13 00:58:01,039 INFO L130 BoogieDeclarations]: Found specification of procedure l1_destroy [2021-10-13 00:58:01,039 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2021-10-13 00:58:01,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:58:01,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:58:01,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:58:01,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-13 00:58:01,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:58:01,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 00:58:01,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 00:58:01,701 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:58:02,060 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:58:02,061 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 00:58:02,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:58:02 BoogieIcfgContainer [2021-10-13 00:58:02,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:58:02,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:58:02,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:58:02,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:58:02,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:58:00" (1/3) ... [2021-10-13 00:58:02,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e89c934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:58:02, skipping insertion in model container [2021-10-13 00:58:02,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:58:00" (2/3) ... [2021-10-13 00:58:02,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e89c934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:58:02, skipping insertion in model container [2021-10-13 00:58:02,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:58:02" (3/3) ... [2021-10-13 00:58:02,076 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0234-2.i [2021-10-13 00:58:02,083 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:58:02,084 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2021-10-13 00:58:02,153 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:58:02,166 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:58:02,166 INFO L340 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2021-10-13 00:58:02,202 INFO L276 IsEmpty]: Start isEmpty. Operand has 218 states, 118 states have (on average 1.728813559322034) internal successors, (204), 183 states have internal predecessors, (204), 20 states have call successors, (20), 15 states have call predecessors, (20), 15 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-10-13 00:58:02,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 00:58:02,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:58:02,214 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:58:02,215 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-10-13 00:58:02,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:58:02,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1775323064, now seen corresponding path program 1 times [2021-10-13 00:58:02,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:58:02,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936430537] [2021-10-13 00:58:02,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:02,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:58:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:58:02,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-13 00:58:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:58:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:58:02,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:58:02,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936430537] [2021-10-13 00:58:02,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936430537] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:58:02,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:58:02,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:58:02,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019549721] [2021-10-13 00:58:02,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:58:02,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:58:02,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:58:02,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:58:02,530 INFO L87 Difference]: Start difference. First operand has 218 states, 118 states have (on average 1.728813559322034) internal successors, (204), 183 states have internal predecessors, (204), 20 states have call successors, (20), 15 states have call predecessors, (20), 15 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:58:03,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:58:03,039 INFO L93 Difference]: Finished difference Result 245 states and 265 transitions. [2021-10-13 00:58:03,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:58:03,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 2 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 [2021-10-13 00:58:03,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:58:03,076 INFO L225 Difference]: With dead ends: 245 [2021-10-13 00:58:03,077 INFO L226 Difference]: Without dead ends: 242 [2021-10-13 00:58:03,080 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:58:03,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-13 00:58:03,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 215. [2021-10-13 00:58:03,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 112 states have (on average 1.7053571428571428) internal successors, (191), 181 states have internal predecessors, (191), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-13 00:58:03,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 230 transitions. [2021-10-13 00:58:03,187 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 230 transitions. Word has length 7 [2021-10-13 00:58:03,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:58:03,188 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 230 transitions. [2021-10-13 00:58:03,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:58:03,188 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 230 transitions. [2021-10-13 00:58:03,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:58:03,189 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:58:03,189 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:58:03,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:58:03,190 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting calloc_modelErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-10-13 00:58:03,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:58:03,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1765019691, now seen corresponding path program 1 times [2021-10-13 00:58:03,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:58:03,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437190015] [2021-10-13 00:58:03,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:03,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:58:03,251 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:58:03,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [61320668] [2021-10-13 00:58:03,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:03,254 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:58:03,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:58:03,260 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:58:03,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:58:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:58:03,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:58:03,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:58:03,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 00:58:03,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:58:03,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:58:03,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437190015] [2021-10-13 00:58:03,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:58:03,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61320668] [2021-10-13 00:58:03,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61320668] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:58:03,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:58:03,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:58:03,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981934931] [2021-10-13 00:58:03,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:58:03,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:58:03,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:58:03,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:58:03,655 INFO L87 Difference]: Start difference. First operand 215 states and 230 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:58:03,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:58:03,776 INFO L93 Difference]: Finished difference Result 214 states and 229 transitions. [2021-10-13 00:58:03,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:58:03,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-13 00:58:03,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:58:03,779 INFO L225 Difference]: With dead ends: 214 [2021-10-13 00:58:03,779 INFO L226 Difference]: Without dead ends: 214 [2021-10-13 00:58:03,780 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:58:03,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-10-13 00:58:03,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-10-13 00:58:03,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 112 states have (on average 1.6964285714285714) internal successors, (190), 180 states have internal predecessors, (190), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-13 00:58:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 229 transitions. [2021-10-13 00:58:03,797 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 229 transitions. Word has length 12 [2021-10-13 00:58:03,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:58:03,798 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 229 transitions. [2021-10-13 00:58:03,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:58:03,798 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 229 transitions. [2021-10-13 00:58:03,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:58:03,799 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:58:03,799 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:58:03,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-13 00:58:04,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-13 00:58:04,025 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting calloc_modelErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-10-13 00:58:04,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:58:04,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1765019692, now seen corresponding path program 1 times [2021-10-13 00:58:04,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:58:04,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367183436] [2021-10-13 00:58:04,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:04,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:58:04,054 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:58:04,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474288880] [2021-10-13 00:58:04,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:04,055 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:58:04,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:58:04,086 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:58:04,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:58:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:58:04,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 00:58:04,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:58:04,424 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 8 treesize of output 7 [2021-10-13 00:58:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:58:04,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:58:04,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367183436] [2021-10-13 00:58:04,449 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:58:04,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474288880] [2021-10-13 00:58:04,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474288880] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:58:04,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:58:04,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:58:04,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732931482] [2021-10-13 00:58:04,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:58:04,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:58:04,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:58:04,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:58:04,455 INFO L87 Difference]: Start difference. First operand 214 states and 229 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:58:04,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:58:04,664 INFO L93 Difference]: Finished difference Result 213 states and 228 transitions. [2021-10-13 00:58:04,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:58:04,664 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-13 00:58:04,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:58:04,666 INFO L225 Difference]: With dead ends: 213 [2021-10-13 00:58:04,667 INFO L226 Difference]: Without dead ends: 213 [2021-10-13 00:58:04,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:58:04,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-10-13 00:58:04,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-10-13 00:58:04,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 111 states have (on average 1.7027027027027026) internal successors, (189), 179 states have internal predecessors, (189), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-13 00:58:04,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 228 transitions. [2021-10-13 00:58:04,697 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 228 transitions. Word has length 12 [2021-10-13 00:58:04,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:58:04,698 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 228 transitions. [2021-10-13 00:58:04,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:58:04,698 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 228 transitions. [2021-10-13 00:58:04,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-10-13 00:58:04,713 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:58:04,713 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-10-13 00:58:04,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:58:04,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:58:04,941 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting l4_insertErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-10-13 00:58:04,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:58:04,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1481553517, now seen corresponding path program 1 times [2021-10-13 00:58:04,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:58:04,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020018577] [2021-10-13 00:58:04,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:04,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:58:04,979 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:58:04,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652015659] [2021-10-13 00:58:04,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:04,980 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:58:04,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:58:04,982 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:58:04,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:58:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:58:05,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-13 00:58:05,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:58:05,746 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 8 treesize of output 7 [2021-10-13 00:58:06,683 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 14 treesize of output 13 [2021-10-13 00:58:06,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-10-13 00:58:07,038 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-13 00:58:07,039 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 36 treesize of output 36 [2021-10-13 00:58:07,061 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 00:58:07,062 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 35 treesize of output 35 [2021-10-13 00:58:10,989 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 98 proven. 13 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-10-13 00:58:10,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:58:10,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020018577] [2021-10-13 00:58:10,990 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:58:10,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652015659] [2021-10-13 00:58:10,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652015659] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:58:10,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:58:10,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-13 00:58:10,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725916879] [2021-10-13 00:58:10,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 00:58:10,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:58:10,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 00:58:10,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:58:10,993 INFO L87 Difference]: Start difference. First operand 213 states and 228 transitions. Second operand has 16 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 6 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-10-13 00:58:15,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:58:15,942 INFO L93 Difference]: Finished difference Result 241 states and 265 transitions. [2021-10-13 00:58:15,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:58:15,944 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 6 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 123 [2021-10-13 00:58:15,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:58:15,948 INFO L225 Difference]: With dead ends: 241 [2021-10-13 00:58:15,948 INFO L226 Difference]: Without dead ends: 241 [2021-10-13 00:58:15,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 5160.4ms TimeCoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2021-10-13 00:58:15,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-10-13 00:58:15,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 210. [2021-10-13 00:58:15,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 111 states have (on average 1.6756756756756757) internal successors, (186), 176 states have internal predecessors, (186), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-13 00:58:15,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 225 transitions. [2021-10-13 00:58:15,961 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 225 transitions. Word has length 123 [2021-10-13 00:58:15,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:58:15,963 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 225 transitions. [2021-10-13 00:58:15,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 6 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-10-13 00:58:15,963 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 225 transitions. [2021-10-13 00:58:15,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-10-13 00:58:15,967 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:58:15,967 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-10-13 00:58:16,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-13 00:58:16,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:58:16,192 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-10-13 00:58:16,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:58:16,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1481553518, now seen corresponding path program 1 times [2021-10-13 00:58:16,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:58:16,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637305581] [2021-10-13 00:58:16,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:16,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:58:16,219 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:58:16,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346304419] [2021-10-13 00:58:16,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:16,220 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:58:16,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:58:16,221 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:58:16,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:58:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:58:16,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 00:58:16,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:58:17,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 00:58:17,276 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 00:58:17,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-10-13 00:58:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 113 proven. 7 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-10-13 00:58:17,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:58:17,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637305581] [2021-10-13 00:58:17,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:58:17,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346304419] [2021-10-13 00:58:17,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346304419] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:58:17,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:58:17,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-13 00:58:17,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857363038] [2021-10-13 00:58:17,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:58:17,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:58:17,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:58:17,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:58:17,304 INFO L87 Difference]: Start difference. First operand 210 states and 225 transitions. Second operand has 14 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-10-13 00:58:18,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:58:18,529 INFO L93 Difference]: Finished difference Result 240 states and 264 transitions. [2021-10-13 00:58:18,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:58:18,532 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 123 [2021-10-13 00:58:18,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:58:18,535 INFO L225 Difference]: With dead ends: 240 [2021-10-13 00:58:18,535 INFO L226 Difference]: Without dead ends: 240 [2021-10-13 00:58:18,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 274.6ms TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:58:18,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-10-13 00:58:18,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 209. [2021-10-13 00:58:18,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 111 states have (on average 1.6666666666666667) internal successors, (185), 175 states have internal predecessors, (185), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-13 00:58:18,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 224 transitions. [2021-10-13 00:58:18,552 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 224 transitions. Word has length 123 [2021-10-13 00:58:18,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:58:18,556 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 224 transitions. [2021-10-13 00:58:18,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-10-13 00:58:18,557 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 224 transitions. [2021-10-13 00:58:18,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 00:58:18,559 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:58:18,559 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-10-13 00:58:18,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-13 00:58:18,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:58:18,765 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting l4_insertErr2REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-10-13 00:58:18,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:58:18,765 INFO L82 PathProgramCache]: Analyzing trace with hash -2138746509, now seen corresponding path program 1 times [2021-10-13 00:58:18,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:58:18,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689885295] [2021-10-13 00:58:18,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:18,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:58:18,806 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:58:18,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962024580] [2021-10-13 00:58:18,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:18,818 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:58:18,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:58:18,819 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:58:18,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 00:58:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:58:19,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-13 00:58:19,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:58:19,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 00:58:19,845 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 00:58:19,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-10-13 00:58:19,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 00:58:20,014 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 00:58:20,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-10-13 00:58:20,048 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 139 proven. 14 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-10-13 00:58:20,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:58:20,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689885295] [2021-10-13 00:58:20,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:58:20,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962024580] [2021-10-13 00:58:20,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962024580] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:58:20,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:58:20,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-13 00:58:20,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081575653] [2021-10-13 00:58:20,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 00:58:20,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:58:20,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 00:58:20,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:58:20,052 INFO L87 Difference]: Start difference. First operand 209 states and 224 transitions. Second operand has 16 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-10-13 00:58:21,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:58:21,554 INFO L93 Difference]: Finished difference Result 237 states and 261 transitions. [2021-10-13 00:58:21,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 00:58:21,555 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 125 [2021-10-13 00:58:21,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:58:21,558 INFO L225 Difference]: With dead ends: 237 [2021-10-13 00:58:21,558 INFO L226 Difference]: Without dead ends: 237 [2021-10-13 00:58:21,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 107 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 447.9ms TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2021-10-13 00:58:21,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-10-13 00:58:21,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 206. [2021-10-13 00:58:21,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 111 states have (on average 1.6396396396396395) internal successors, (182), 172 states have internal predecessors, (182), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-13 00:58:21,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 221 transitions. [2021-10-13 00:58:21,575 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 221 transitions. Word has length 125 [2021-10-13 00:58:21,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:58:21,576 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 221 transitions. [2021-10-13 00:58:21,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2021-10-13 00:58:21,577 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 221 transitions. [2021-10-13 00:58:21,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-13 00:58:21,578 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:58:21,579 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-10-13 00:58:21,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:58:21,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-13 00:58:21,793 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting l4_insertErr3REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-10-13 00:58:21,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:58:21,794 INFO L82 PathProgramCache]: Analyzing trace with hash -2138746508, now seen corresponding path program 1 times [2021-10-13 00:58:21,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:58:21,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610714402] [2021-10-13 00:58:21,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:21,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:58:21,827 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:58:21,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054237995] [2021-10-13 00:58:21,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:21,828 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:58:21,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:58:21,829 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:58:21,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 00:58:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:58:22,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 79 conjunts are in the unsatisfiable core [2021-10-13 00:58:22,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:58:22,585 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 8 treesize of output 7 [2021-10-13 00:58:23,639 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 20 treesize of output 19 [2021-10-13 00:58:23,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2021-10-13 00:58:24,159 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-13 00:58:24,159 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 42 treesize of output 42 [2021-10-13 00:58:24,198 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-13 00:58:24,199 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 41 treesize of output 45 [2021-10-13 00:58:24,546 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 14 treesize of output 13 [2021-10-13 00:58:24,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-10-13 00:58:24,801 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-10-13 00:58:24,801 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 3 case distinctions, treesize of input 52 treesize of output 55 [2021-10-13 00:58:24,840 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-13 00:58:24,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 53 [2021-10-13 00:58:31,289 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 125 proven. 39 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-10-13 00:58:31,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:58:31,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610714402] [2021-10-13 00:58:31,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:58:31,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054237995] [2021-10-13 00:58:31,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054237995] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:58:31,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:58:31,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-10-13 00:58:31,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347111767] [2021-10-13 00:58:31,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 00:58:31,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:58:31,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 00:58:31,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=361, Unknown=2, NotChecked=0, Total=420 [2021-10-13 00:58:31,294 INFO L87 Difference]: Start difference. First operand 206 states and 221 transitions. Second operand has 21 states, 15 states have (on average 3.6) internal successors, (54), 17 states have internal predecessors, (54), 9 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2021-10-13 00:58:52,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:58:52,988 INFO L93 Difference]: Finished difference Result 234 states and 258 transitions. [2021-10-13 00:58:52,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 00:58:52,990 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 15 states have (on average 3.6) internal successors, (54), 17 states have internal predecessors, (54), 9 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 125 [2021-10-13 00:58:52,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:58:52,993 INFO L225 Difference]: With dead ends: 234 [2021-10-13 00:58:52,993 INFO L226 Difference]: Without dead ends: 234 [2021-10-13 00:58:52,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 18570.0ms TimeCoverageRelationStatistics Valid=154, Invalid=1030, Unknown=6, NotChecked=0, Total=1190 [2021-10-13 00:58:52,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-13 00:58:53,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 203. [2021-10-13 00:58:53,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 111 states have (on average 1.6126126126126126) internal successors, (179), 169 states have internal predecessors, (179), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-13 00:58:53,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 218 transitions. [2021-10-13 00:58:53,006 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 218 transitions. Word has length 125 [2021-10-13 00:58:53,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:58:53,007 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 218 transitions. [2021-10-13 00:58:53,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 15 states have (on average 3.6) internal successors, (54), 17 states have internal predecessors, (54), 9 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2021-10-13 00:58:53,008 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 218 transitions. [2021-10-13 00:58:53,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-10-13 00:58:53,010 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:58:53,010 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-10-13 00:58:53,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:58:53,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:58:53,221 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting l3_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-10-13 00:58:53,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:58:53,221 INFO L82 PathProgramCache]: Analyzing trace with hash -985383270, now seen corresponding path program 1 times [2021-10-13 00:58:53,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:58:53,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107103169] [2021-10-13 00:58:53,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:53,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:58:53,251 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:58:53,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427354524] [2021-10-13 00:58:53,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:53,252 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:58:53,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:58:53,253 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:58:53,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 00:58:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:58:53,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-13 00:58:53,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:58:54,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-10-13 00:58:54,355 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-13 00:58:54,355 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 17 treesize of output 21 [2021-10-13 00:58:54,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 00:58:54,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 00:58:54,841 INFO L354 Elim1Store]: treesize reduction 82, result has 16.3 percent of original size [2021-10-13 00:58:54,842 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 4 case distinctions, treesize of input 24 treesize of output 31 [2021-10-13 00:58:54,917 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 141 proven. 41 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-10-13 00:58:54,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:58:54,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107103169] [2021-10-13 00:58:54,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:58:54,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427354524] [2021-10-13 00:58:54,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427354524] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:58:54,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:58:54,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-10-13 00:58:54,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609046232] [2021-10-13 00:58:54,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 00:58:54,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:58:54,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 00:58:54,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:58:54,923 INFO L87 Difference]: Start difference. First operand 203 states and 218 transitions. Second operand has 20 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 8 states have call successors, (18), 4 states have call predecessors, (18), 8 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2021-10-13 00:58:56,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:58:56,585 INFO L93 Difference]: Finished difference Result 231 states and 255 transitions. [2021-10-13 00:58:56,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 00:58:56,586 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 8 states have call successors, (18), 4 states have call predecessors, (18), 8 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) Word has length 133 [2021-10-13 00:58:56,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:58:56,589 INFO L225 Difference]: With dead ends: 231 [2021-10-13 00:58:56,590 INFO L226 Difference]: Without dead ends: 231 [2021-10-13 00:58:56,591 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 111 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 581.1ms TimeCoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2021-10-13 00:58:56,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-10-13 00:58:56,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 200. [2021-10-13 00:58:56,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 111 states have (on average 1.5855855855855856) internal successors, (176), 166 states have internal predecessors, (176), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-13 00:58:56,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 215 transitions. [2021-10-13 00:58:56,610 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 215 transitions. Word has length 133 [2021-10-13 00:58:56,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:58:56,611 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 215 transitions. [2021-10-13 00:58:56,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 8 states have call successors, (18), 4 states have call predecessors, (18), 8 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2021-10-13 00:58:56,611 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 215 transitions. [2021-10-13 00:58:56,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-10-13 00:58:56,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:58:56,620 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-10-13 00:58:56,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:58:56,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:58:56,836 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting l3_insertErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-10-13 00:58:56,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:58:56,837 INFO L82 PathProgramCache]: Analyzing trace with hash -985383269, now seen corresponding path program 1 times [2021-10-13 00:58:56,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:58:56,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905355703] [2021-10-13 00:58:56,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:56,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:58:56,877 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:58:56,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1230194570] [2021-10-13 00:58:56,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:58:56,893 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:58:56,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:58:56,895 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:58:56,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 00:58:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:58:57,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 116 conjunts are in the unsatisfiable core [2021-10-13 00:58:57,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:58:57,909 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 8 treesize of output 7 [2021-10-13 00:59:06,325 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 20 treesize of output 19 [2021-10-13 00:59:06,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2021-10-13 00:59:07,273 INFO L354 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2021-10-13 00:59:07,273 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 56 treesize of output 54 [2021-10-13 00:59:09,127 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-13 00:59:09,128 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 17 treesize of output 21 [2021-10-13 00:59:12,154 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 20 treesize of output 19 [2021-10-13 00:59:12,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2021-10-13 00:59:13,144 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 14 treesize of output 13 [2021-10-13 00:59:13,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-10-13 00:59:14,711 INFO L354 Elim1Store]: treesize reduction 50, result has 20.6 percent of original size [2021-10-13 00:59:14,712 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 2 case distinctions, treesize of input 105 treesize of output 97 [2021-10-13 00:59:15,522 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-10-13 00:59:15,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 98 treesize of output 106 [2021-10-13 00:59:16,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:59:16,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905355703] [2021-10-13 00:59:16,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:59:16,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230194570] [2021-10-13 00:59:16,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: No corresponding IProgramVar for v_prenex_1 [2021-10-13 00:59:16,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:59:16,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-13 00:59:16,096 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-10-13 00:59:16,096 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-13 00:59:16,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr1REQUIRES_VIOLATION [2021-10-13 00:59:16,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr0REQUIRES_VIOLATION [2021-10-13 00:59:16,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr1REQUIRES_VIOLATION [2021-10-13 00:59:16,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr2REQUIRES_VIOLATION [2021-10-13 00:59:16,108 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr3REQUIRES_VIOLATION [2021-10-13 00:59:16,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:59:16,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:59:16,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:59:16,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr0REQUIRES_VIOLATION [2021-10-13 00:59:16,109 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr2REQUIRES_VIOLATION [2021-10-13 00:59:16,110 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr3REQUIRES_VIOLATION [2021-10-13 00:59:16,110 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr4REQUIRES_VIOLATION [2021-10-13 00:59:16,110 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l3_insertErr5REQUIRES_VIOLATION [2021-10-13 00:59:16,110 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr0REQUIRES_VIOLATION [2021-10-13 00:59:16,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr1REQUIRES_VIOLATION [2021-10-13 00:59:16,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr2REQUIRES_VIOLATION [2021-10-13 00:59:16,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr3REQUIRES_VIOLATION [2021-10-13 00:59:16,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr4REQUIRES_VIOLATION [2021-10-13 00:59:16,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_insertErr5REQUIRES_VIOLATION [2021-10-13 00:59:16,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr0REQUIRES_VIOLATION [2021-10-13 00:59:16,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr1REQUIRES_VIOLATION [2021-10-13 00:59:16,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:59:16,112 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:59:16,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:59:16,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr0REQUIRES_VIOLATION [2021-10-13 00:59:16,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr1REQUIRES_VIOLATION [2021-10-13 00:59:16,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr2REQUIRES_VIOLATION [2021-10-13 00:59:16,113 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr3REQUIRES_VIOLATION [2021-10-13 00:59:16,114 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr4REQUIRES_VIOLATION [2021-10-13 00:59:16,114 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_insertErr5REQUIRES_VIOLATION [2021-10-13 00:59:16,114 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr0REQUIRES_VIOLATION [2021-10-13 00:59:16,114 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location calloc_modelErr1REQUIRES_VIOLATION [2021-10-13 00:59:16,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr0REQUIRES_VIOLATION [2021-10-13 00:59:16,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr1REQUIRES_VIOLATION [2021-10-13 00:59:16,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr2REQUIRES_VIOLATION [2021-10-13 00:59:16,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr3REQUIRES_VIOLATION [2021-10-13 00:59:16,115 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:59:16,116 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:59:16,116 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l1_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:59:16,116 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-13 00:59:16,116 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-13 00:59:16,117 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 00:59:16,117 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr0REQUIRES_VIOLATION [2021-10-13 00:59:16,117 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr1REQUIRES_VIOLATION [2021-10-13 00:59:16,117 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr2REQUIRES_VIOLATION [2021-10-13 00:59:16,118 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr3REQUIRES_VIOLATION [2021-10-13 00:59:16,118 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:59:16,118 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:59:16,118 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l2_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:59:16,119 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr0REQUIRES_VIOLATION [2021-10-13 00:59:16,119 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr1REQUIRES_VIOLATION [2021-10-13 00:59:16,119 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr2REQUIRES_VIOLATION [2021-10-13 00:59:16,119 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr3REQUIRES_VIOLATION [2021-10-13 00:59:16,119 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:59:16,120 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:59:16,120 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 00:59:16,120 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr0REQUIRES_VIOLATION [2021-10-13 00:59:16,120 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr1REQUIRES_VIOLATION [2021-10-13 00:59:16,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr2REQUIRES_VIOLATION [2021-10-13 00:59:16,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr3REQUIRES_VIOLATION [2021-10-13 00:59:16,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr4REQUIRES_VIOLATION [2021-10-13 00:59:16,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l0_insertErr5REQUIRES_VIOLATION [2021-10-13 00:59:16,121 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr0REQUIRES_VIOLATION [2021-10-13 00:59:16,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr1REQUIRES_VIOLATION [2021-10-13 00:59:16,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr2REQUIRES_VIOLATION [2021-10-13 00:59:16,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr3REQUIRES_VIOLATION [2021-10-13 00:59:16,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr4REQUIRES_VIOLATION [2021-10-13 00:59:16,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr5REQUIRES_VIOLATION [2021-10-13 00:59:16,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr6REQUIRES_VIOLATION [2021-10-13 00:59:16,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location l4_insertErr7REQUIRES_VIOLATION [2021-10-13 00:59:16,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:59:16,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-13 00:59:16,354 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:59:16,361 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-10-13 00:59:16,363 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-10-13 00:59:16,363 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-10-13 00:59:16,363 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-10-13 00:59:16,363 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-10-13 00:59:16,364 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-10-13 00:59:16,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:59:16 BoogieIcfgContainer [2021-10-13 00:59:16,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:59:16,383 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:59:16,384 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:59:16,384 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:59:16,384 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:58:02" (3/4) ... [2021-10-13 00:59:16,388 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:59:16,388 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:59:16,389 INFO L168 Benchmark]: Toolchain (without parser) took 76311.89 ms. Allocated memory was 111.1 MB in the beginning and 176.2 MB in the end (delta: 65.0 MB). Free memory was 69.4 MB in the beginning and 135.3 MB in the end (delta: -65.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:59:16,390 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 111.1 MB. Free memory is still 87.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:59:16,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.33 ms. Allocated memory is still 111.1 MB. Free memory was 69.2 MB in the beginning and 74.8 MB in the end (delta: -5.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:59:16,391 INFO L168 Benchmark]: Boogie Preprocessor took 139.75 ms. Allocated memory is still 111.1 MB. Free memory was 74.8 MB in the beginning and 71.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:59:16,391 INFO L168 Benchmark]: RCFGBuilder took 1149.79 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 71.1 MB in the beginning and 105.0 MB in the end (delta: -33.9 MB). Peak memory consumption was 47.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:59:16,392 INFO L168 Benchmark]: TraceAbstraction took 74316.20 ms. Allocated memory was 134.2 MB in the beginning and 176.2 MB in the end (delta: 41.9 MB). Free memory was 104.7 MB in the beginning and 135.3 MB in the end (delta: -30.5 MB). Peak memory consumption was 111.0 MB. Max. memory is 16.1 GB. [2021-10-13 00:59:16,392 INFO L168 Benchmark]: Witness Printer took 5.07 ms. Allocated memory is still 176.2 MB. Free memory is still 135.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:59:16,394 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 111.1 MB. Free memory is still 87.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 693.33 ms. Allocated memory is still 111.1 MB. Free memory was 69.2 MB in the beginning and 74.8 MB in the end (delta: -5.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 139.75 ms. Allocated memory is still 111.1 MB. Free memory was 74.8 MB in the beginning and 71.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1149.79 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 71.1 MB in the beginning and 105.0 MB in the end (delta: -33.9 MB). Peak memory consumption was 47.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 74316.20 ms. Allocated memory was 134.2 MB in the beginning and 176.2 MB in the end (delta: 41.9 MB). Free memory was 104.7 MB in the beginning and 135.3 MB in the end (delta: -30.5 MB). Peak memory consumption was 111.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.07 ms. Allocated memory is still 176.2 MB. Free memory is still 135.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 685]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L766] static struct L0 *list; [L768] CALL l0_insert(&list) [L708] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L708] RET, EXPR zalloc_or_die(sizeof *item) [L708] struct L0 *item = zalloc_or_die(sizeof *item); [L710] CALL l1_insert(&item->down) [L699] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L699] RET, EXPR zalloc_or_die(sizeof *item) [L699] struct L1 *item = zalloc_or_die(sizeof *item); [L701] CALL l2_insert(&item->down) [L690] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L690] RET, EXPR zalloc_or_die(sizeof *item) [L690] struct L2 *item = zalloc_or_die(sizeof *item); [L692] CALL l3_insert(&item->down) [L681] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L681] RET, EXPR zalloc_or_die(sizeof *item) [L681] struct L3 *item = zalloc_or_die(sizeof *item); [L683] CALL l4_insert(&item->down) [L674] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L674] RET, EXPR zalloc_or_die(sizeof *item) [L674] struct L4 *item = zalloc_or_die(sizeof *item); [L675] CALL, EXPR zalloc_or_die(119U) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND TRUE \read(*ptr) [L669] return ptr; [L675] RET, EXPR zalloc_or_die(119U) [L675] item->down = zalloc_or_die(119U) [L676] EXPR \read(**list) [L676] item->next = *list [L677] *list = item [L683] RET l4_insert(&item->down) [L684] COND FALSE !(__VERIFIER_nondet_int()) [L685] \read(**list) - UnprovableResult [Line: 727]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 727]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 686]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 686]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 642]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 642]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 747]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 747]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 748]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 748]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 749]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 749]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 749]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 764]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 737]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 737]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 738]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 738]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 757]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 757]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 759]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 759]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 759]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 675]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 675]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 676]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 677]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 677]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 22 procedures, 236 locations, 70 error locations. Started 1 CEGAR loops. OverallTime: 74201.9ms, OverallIterations: 9, TraceHistogramMax: 6, EmptinessCheckTime: 52.4ms, AutomataDifference: 31978.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 28.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1470 SDtfs, 977 SDslu, 6969 SDs, 0 SdLazy, 7926 SolverSat, 429 SolverUnsat, 28 SolverUnknown, 0 SolverNotchecked, 16867.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 716 GetRequests, 559 SyntacticMatches, 17 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 25114.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=218occurred in iteration=0, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 209.4ms AutomataMinimizationTime, 8 MinimizatonAttempts, 182 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 282.4ms SsaConstructionTime, 691.1ms SatisfiabilityAnalysisTime, 17541.3ms InterpolantComputationTime, 660 NumberOfCodeBlocks, 660 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 652 ConstructedInterpolants, 108 QuantifiedInterpolants, 2961 SizeOfPredicates, 46 NumberOfNonLiveVariables, 4081 ConjunctsInSsa, 265 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 1086/1200 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 00:59:16,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:59:19,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:59:19,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:59:19,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:59:19,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:59:19,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:59:19,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:59:19,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:59:19,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:59:19,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:59:19,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:59:19,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:59:19,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:59:19,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:59:19,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:59:19,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:59:19,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:59:19,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:59:19,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:59:19,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:59:19,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:59:19,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:59:19,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:59:19,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:59:19,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:59:19,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:59:19,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:59:19,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:59:19,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:59:19,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:59:19,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:59:19,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:59:19,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:59:19,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:59:19,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:59:19,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:59:19,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:59:19,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:59:19,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:59:19,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:59:19,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:59:19,609 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 00:59:19,661 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:59:19,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:59:19,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:59:19,663 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:59:19,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:59:19,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:59:19,666 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:59:19,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:59:19,667 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:59:19,667 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:59:19,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:59:19,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:59:19,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:59:19,670 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 00:59:19,670 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 00:59:19,671 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 00:59:19,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:59:19,671 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 00:59:19,672 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 00:59:19,672 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 00:59:19,672 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:59:19,672 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:59:19,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:59:19,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:59:19,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:59:19,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:59:19,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:59:19,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:59:19,675 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 00:59:19,675 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 00:59:19,676 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:59:19,676 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 00:59:19,676 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_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a645958c16cc940658b53821ab7b3c3bff1f224 [2021-10-13 00:59:20,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:59:20,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:59:20,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:59:20,182 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:59:20,183 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:59:20,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/memsafety/test-0234-2.i [2021-10-13 00:59:20,266 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/data/cae905a2a/5f9d69dd3815472f8cf51b4073986efc/FLAG4cc602d3e [2021-10-13 00:59:21,101 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:59:21,102 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/sv-benchmarks/c/memsafety/test-0234-2.i [2021-10-13 00:59:21,139 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/data/cae905a2a/5f9d69dd3815472f8cf51b4073986efc/FLAG4cc602d3e [2021-10-13 00:59:21,323 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/data/cae905a2a/5f9d69dd3815472f8cf51b4073986efc [2021-10-13 00:59:21,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:59:21,328 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 00:59:21,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:59:21,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:59:21,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:59:21,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:59:21" (1/1) ... [2021-10-13 00:59:21,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@519f295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:21, skipping insertion in model container [2021-10-13 00:59:21,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:59:21" (1/1) ... [2021-10-13 00:59:21,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:59:21,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:59:22,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:59:22,080 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:59:22,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:59:22,235 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:59:22,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:22 WrapperNode [2021-10-13 00:59:22,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:59:22,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:59:22,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:59:22,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:59:22,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:22" (1/1) ... [2021-10-13 00:59:22,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:22" (1/1) ... [2021-10-13 00:59:22,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:22" (1/1) ... [2021-10-13 00:59:22,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:22" (1/1) ... [2021-10-13 00:59:22,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:22" (1/1) ... [2021-10-13 00:59:22,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:22" (1/1) ... [2021-10-13 00:59:22,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:22" (1/1) ... [2021-10-13 00:59:22,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:59:22,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:59:22,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:59:22,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:59:22,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:22" (1/1) ... [2021-10-13 00:59:22,393 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:59:22,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:59:22,430 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:59:22,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:59:22,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-13 00:59:22,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:59:22,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:59:22,502 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-13 00:59:22,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-13 00:59:22,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-13 00:59:22,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-13 00:59:22,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-13 00:59:22,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-13 00:59:22,505 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2021-10-13 00:59:22,505 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2021-10-13 00:59:22,505 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_insert [2021-10-13 00:59:22,505 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_insert [2021-10-13 00:59:22,505 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_insert [2021-10-13 00:59:22,505 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_insert [2021-10-13 00:59:22,506 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_insert [2021-10-13 00:59:22,506 INFO L138 BoogieDeclarations]: Found implementation of procedure l4_destroy [2021-10-13 00:59:22,506 INFO L138 BoogieDeclarations]: Found implementation of procedure l3_destroy [2021-10-13 00:59:22,506 INFO L138 BoogieDeclarations]: Found implementation of procedure l2_destroy [2021-10-13 00:59:22,506 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_destroy [2021-10-13 00:59:22,507 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2021-10-13 00:59:22,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-13 00:59:22,507 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-10-13 00:59:22,507 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-13 00:59:22,508 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-13 00:59:22,508 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-13 00:59:22,508 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-13 00:59:22,508 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-13 00:59:22,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:59:22,509 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-13 00:59:22,509 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-13 00:59:22,509 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-13 00:59:22,509 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-13 00:59:22,509 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-13 00:59:22,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-13 00:59:22,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-13 00:59:22,511 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-13 00:59:22,511 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-13 00:59:22,511 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-13 00:59:22,511 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-13 00:59:22,512 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-13 00:59:22,512 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-13 00:59:22,512 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-13 00:59:22,512 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-13 00:59:22,512 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-13 00:59:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-13 00:59:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-13 00:59:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-13 00:59:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-13 00:59:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-13 00:59:22,515 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-13 00:59:22,515 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-13 00:59:22,515 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-13 00:59:22,516 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-13 00:59:22,516 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-13 00:59:22,516 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-13 00:59:22,516 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-13 00:59:22,516 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-13 00:59:22,516 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-13 00:59:22,517 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-13 00:59:22,517 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-13 00:59:22,518 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-13 00:59:22,518 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-13 00:59:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-13 00:59:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-13 00:59:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-13 00:59:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-13 00:59:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-13 00:59:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-13 00:59:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-13 00:59:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-13 00:59:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-13 00:59:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-13 00:59:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-13 00:59:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-13 00:59:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-13 00:59:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-13 00:59:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-13 00:59:22,524 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-13 00:59:22,524 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-13 00:59:22,524 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-13 00:59:22,524 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-13 00:59:22,524 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-13 00:59:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-13 00:59:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-13 00:59:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-13 00:59:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-13 00:59:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-13 00:59:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-13 00:59:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-13 00:59:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-13 00:59:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-13 00:59:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-13 00:59:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-13 00:59:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-13 00:59:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-13 00:59:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-13 00:59:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-13 00:59:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-13 00:59:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-13 00:59:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-13 00:59:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-13 00:59:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-13 00:59:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-13 00:59:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-13 00:59:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-13 00:59:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-13 00:59:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-13 00:59:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-13 00:59:22,531 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-13 00:59:22,531 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-13 00:59:22,532 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-13 00:59:22,532 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-13 00:59:22,532 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-13 00:59:22,532 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-13 00:59:22,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-13 00:59:22,532 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-13 00:59:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-13 00:59:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-13 00:59:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-13 00:59:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-13 00:59:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-13 00:59:22,534 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-13 00:59:22,534 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-13 00:59:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-13 00:59:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-13 00:59:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-13 00:59:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-13 00:59:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-13 00:59:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-13 00:59:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-13 00:59:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-13 00:59:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-13 00:59:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-13 00:59:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-13 00:59:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-10-13 00:59:22,549 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-10-13 00:59:22,549 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-10-13 00:59:22,549 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-10-13 00:59:22,549 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-13 00:59:22,550 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-10-13 00:59:22,550 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-10-13 00:59:22,550 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-10-13 00:59:22,550 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-10-13 00:59:22,550 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-10-13 00:59:22,550 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-10-13 00:59:22,551 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-10-13 00:59:22,551 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-10-13 00:59:22,551 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-10-13 00:59:22,551 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-10-13 00:59:22,551 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-10-13 00:59:22,551 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-10-13 00:59:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-10-13 00:59:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-10-13 00:59:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-13 00:59:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-10-13 00:59:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-10-13 00:59:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-10-13 00:59:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-10-13 00:59:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-10-13 00:59:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-10-13 00:59:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-10-13 00:59:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-10-13 00:59:22,554 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-10-13 00:59:22,554 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-10-13 00:59:22,554 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-10-13 00:59:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-10-13 00:59:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-10-13 00:59:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-10-13 00:59:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-10-13 00:59:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-10-13 00:59:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-10-13 00:59:22,556 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-10-13 00:59:22,556 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-10-13 00:59:22,556 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-10-13 00:59:22,556 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-10-13 00:59:22,556 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-10-13 00:59:22,556 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-10-13 00:59:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-10-13 00:59:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-10-13 00:59:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-10-13 00:59:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-10-13 00:59:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-10-13 00:59:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-10-13 00:59:22,557 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-10-13 00:59:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-10-13 00:59:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2021-10-13 00:59:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 00:59:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-10-13 00:59:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-13 00:59:22,558 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2021-10-13 00:59:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure l4_insert [2021-10-13 00:59:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 00:59:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 00:59:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure l3_insert [2021-10-13 00:59:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure l2_insert [2021-10-13 00:59:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure l1_insert [2021-10-13 00:59:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure l0_insert [2021-10-13 00:59:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure l4_destroy [2021-10-13 00:59:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 00:59:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure l3_destroy [2021-10-13 00:59:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure l2_destroy [2021-10-13 00:59:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure l1_destroy [2021-10-13 00:59:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2021-10-13 00:59:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-13 00:59:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-13 00:59:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 00:59:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-13 00:59:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:59:22,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 00:59:22,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-13 00:59:22,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-13 00:59:23,373 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 00:59:23,898 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:59:23,901 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 00:59:23,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:59:23 BoogieIcfgContainer [2021-10-13 00:59:23,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:59:23,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:59:23,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:59:23,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:59:23,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:59:21" (1/3) ... [2021-10-13 00:59:23,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd970ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:59:23, skipping insertion in model container [2021-10-13 00:59:23,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:59:22" (2/3) ... [2021-10-13 00:59:23,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd970ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:59:23, skipping insertion in model container [2021-10-13 00:59:23,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:59:23" (3/3) ... [2021-10-13 00:59:23,913 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0234-2.i [2021-10-13 00:59:23,918 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:59:23,918 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2021-10-13 00:59:23,974 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:59:23,983 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:59:23,983 INFO L340 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2021-10-13 00:59:24,010 INFO L276 IsEmpty]: Start isEmpty. Operand has 213 states, 113 states have (on average 1.761061946902655) internal successors, (199), 178 states have internal predecessors, (199), 20 states have call successors, (20), 15 states have call predecessors, (20), 15 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-10-13 00:59:24,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 00:59:24,017 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:59:24,018 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:59:24,018 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-10-13 00:59:24,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:59:24,026 INFO L82 PathProgramCache]: Analyzing trace with hash 245040585, now seen corresponding path program 1 times [2021-10-13 00:59:24,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:59:24,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409411459] [2021-10-13 00:59:24,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:59:24,039 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:59:24,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:59:24,042 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:59:24,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 00:59:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:59:24,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 00:59:24,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:59:24,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:59:24,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:59:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:59:24,350 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:59:24,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409411459] [2021-10-13 00:59:24,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409411459] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:59:24,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:59:24,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 00:59:24,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347662556] [2021-10-13 00:59:24,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:59:24,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:59:24,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:59:24,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:59:24,381 INFO L87 Difference]: Start difference. First operand has 213 states, 113 states have (on average 1.761061946902655) internal successors, (199), 178 states have internal predecessors, (199), 20 states have call successors, (20), 15 states have call predecessors, (20), 15 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-10-13 00:59:24,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:59:24,428 INFO L93 Difference]: Finished difference Result 213 states and 228 transitions. [2021-10-13 00:59:24,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:59:24,431 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 [2021-10-13 00:59:24,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:59:24,453 INFO L225 Difference]: With dead ends: 213 [2021-10-13 00:59:24,453 INFO L226 Difference]: Without dead ends: 210 [2021-10-13 00:59:24,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:59:24,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-10-13 00:59:24,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-10-13 00:59:24,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 107 states have (on average 1.7383177570093458) internal successors, (186), 176 states have internal predecessors, (186), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-13 00:59:24,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 225 transitions. [2021-10-13 00:59:24,542 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 225 transitions. Word has length 7 [2021-10-13 00:59:24,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:59:24,543 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 225 transitions. [2021-10-13 00:59:24,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-10-13 00:59:24,543 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 225 transitions. [2021-10-13 00:59:24,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:59:24,544 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:59:24,545 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:59:24,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 00:59:24,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:59:24,757 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting calloc_modelErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-10-13 00:59:24,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:59:24,757 INFO L82 PathProgramCache]: Analyzing trace with hash 2078620137, now seen corresponding path program 1 times [2021-10-13 00:59:24,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:59:24,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571997631] [2021-10-13 00:59:24,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:59:24,759 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:59:24,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:59:24,761 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:59:24,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 00:59:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:59:24,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:59:24,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:59:25,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 00:59:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:59:25,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:59:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:59:25,117 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:59:25,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571997631] [2021-10-13 00:59:25,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571997631] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:59:25,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:59:25,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 00:59:25,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172567139] [2021-10-13 00:59:25,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:59:25,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:59:25,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:59:25,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:59:25,123 INFO L87 Difference]: Start difference. First operand 210 states and 225 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:59:25,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:59:25,477 INFO L93 Difference]: Finished difference Result 209 states and 224 transitions. [2021-10-13 00:59:25,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:59:25,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-13 00:59:25,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:59:25,481 INFO L225 Difference]: With dead ends: 209 [2021-10-13 00:59:25,481 INFO L226 Difference]: Without dead ends: 209 [2021-10-13 00:59:25,482 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:59:25,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-10-13 00:59:25,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2021-10-13 00:59:25,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 107 states have (on average 1.7289719626168225) internal successors, (185), 175 states have internal predecessors, (185), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-10-13 00:59:25,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 224 transitions. [2021-10-13 00:59:25,499 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 224 transitions. Word has length 12 [2021-10-13 00:59:25,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:59:25,500 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 224 transitions. [2021-10-13 00:59:25,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:59:25,500 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 224 transitions. [2021-10-13 00:59:25,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:59:25,501 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:59:25,501 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:59:25,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:59:25,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:59:25,713 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting calloc_modelErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-10-13 00:59:25,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:59:25,714 INFO L82 PathProgramCache]: Analyzing trace with hash 2078620138, now seen corresponding path program 1 times [2021-10-13 00:59:25,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:59:25,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153559724] [2021-10-13 00:59:25,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:59:25,715 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:59:25,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:59:25,721 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:59:25,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 00:59:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:59:25,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:59:25,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:59:26,044 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 8 treesize of output 7 [2021-10-13 00:59:26,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:59:26,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:59:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:59:26,478 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:59:26,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153559724] [2021-10-13 00:59:26,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153559724] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:59:26,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:59:26,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 2] imperfect sequences [] total 6 [2021-10-13 00:59:26,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546198803] [2021-10-13 00:59:26,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:59:26,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:59:26,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:59:26,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:59:26,481 INFO L87 Difference]: Start difference. First operand 209 states and 224 transitions. Second operand has 7 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:59:28,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:59:28,993 INFO L93 Difference]: Finished difference Result 219 states and 234 transitions. [2021-10-13 00:59:28,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:59:28,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-13 00:59:28,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:59:28,998 INFO L225 Difference]: With dead ends: 219 [2021-10-13 00:59:28,998 INFO L226 Difference]: Without dead ends: 219 [2021-10-13 00:59:28,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 371.2ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:59:28,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-10-13 00:59:29,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-10-13 00:59:29,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 113 states have (on average 1.6902654867256637) internal successors, (191), 181 states have internal predecessors, (191), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-10-13 00:59:29,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 234 transitions. [2021-10-13 00:59:29,017 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 234 transitions. Word has length 12 [2021-10-13 00:59:29,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:59:29,017 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 234 transitions. [2021-10-13 00:59:29,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 00:59:29,018 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 234 transitions. [2021-10-13 00:59:29,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-10-13 00:59:29,023 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:59:29,024 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-10-13 00:59:29,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:59:29,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:59:29,235 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-10-13 00:59:29,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:59:29,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1253485173, now seen corresponding path program 1 times [2021-10-13 00:59:29,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:59:29,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118224752] [2021-10-13 00:59:29,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:59:29,238 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:59:29,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:59:29,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:59:29,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 00:59:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:59:29,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:59:29,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:59:30,284 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-10-13 00:59:30,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:59:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-10-13 00:59:32,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:59:32,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118224752] [2021-10-13 00:59:32,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118224752] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 00:59:32,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:59:32,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2021-10-13 00:59:32,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33421628] [2021-10-13 00:59:32,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:59:32,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:59:32,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:59:32,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:59:32,388 INFO L87 Difference]: Start difference. First operand 219 states and 234 transitions. Second operand has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-10-13 00:59:32,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:59:32,927 INFO L93 Difference]: Finished difference Result 236 states and 251 transitions. [2021-10-13 00:59:32,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:59:32,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 123 [2021-10-13 00:59:32,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:59:32,930 INFO L225 Difference]: With dead ends: 236 [2021-10-13 00:59:32,930 INFO L226 Difference]: Without dead ends: 220 [2021-10-13 00:59:32,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 991.2ms TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:59:32,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-13 00:59:32,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2021-10-13 00:59:32,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 114 states have (on average 1.6842105263157894) internal successors, (192), 182 states have internal predecessors, (192), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-10-13 00:59:32,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 235 transitions. [2021-10-13 00:59:32,943 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 235 transitions. Word has length 123 [2021-10-13 00:59:32,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:59:32,944 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 235 transitions. [2021-10-13 00:59:32,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-10-13 00:59:32,944 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 235 transitions. [2021-10-13 00:59:32,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-10-13 00:59:32,950 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:59:32,950 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-10-13 00:59:32,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:59:33,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:59:33,166 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-10-13 00:59:33,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:59:33,166 INFO L82 PathProgramCache]: Analyzing trace with hash 717300927, now seen corresponding path program 1 times [2021-10-13 00:59:33,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:59:33,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428551189] [2021-10-13 00:59:33,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:59:33,167 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:59:33,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:59:33,170 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:59:33,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 00:59:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:59:33,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 00:59:33,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:59:34,283 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-10-13 00:59:34,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:59:36,521 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-10-13 00:59:36,521 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:59:36,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428551189] [2021-10-13 00:59:36,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428551189] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:59:36,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:59:36,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-13 00:59:36,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096504388] [2021-10-13 00:59:36,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:59:36,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:59:36,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:59:36,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:59:36,524 INFO L87 Difference]: Start difference. First operand 220 states and 235 transitions. Second operand has 15 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 15 states have internal predecessors, (58), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-10-13 00:59:37,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:59:37,386 INFO L93 Difference]: Finished difference Result 237 states and 252 transitions. [2021-10-13 00:59:37,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:59:37,388 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 15 states have internal predecessors, (58), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 129 [2021-10-13 00:59:37,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:59:37,390 INFO L225 Difference]: With dead ends: 237 [2021-10-13 00:59:37,390 INFO L226 Difference]: Without dead ends: 221 [2021-10-13 00:59:37,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1227.6ms TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:59:37,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-10-13 00:59:37,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2021-10-13 00:59:37,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 115 states have (on average 1.6782608695652175) internal successors, (193), 183 states have internal predecessors, (193), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-10-13 00:59:37,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 236 transitions. [2021-10-13 00:59:37,403 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 236 transitions. Word has length 129 [2021-10-13 00:59:37,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:59:37,403 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 236 transitions. [2021-10-13 00:59:37,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 15 states have internal predecessors, (58), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-10-13 00:59:37,404 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 236 transitions. [2021-10-13 00:59:37,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-10-13 00:59:37,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:59:37,407 INFO L512 BasicCegarLoop]: trace histogram [12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-10-13 00:59:37,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:59:37,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:59:37,621 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-10-13 00:59:37,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:59:37,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1925186805, now seen corresponding path program 2 times [2021-10-13 00:59:37,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:59:37,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356271601] [2021-10-13 00:59:37,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:59:37,623 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:59:37,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:59:37,626 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:59:37,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 00:59:38,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:59:38,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:59:38,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:59:38,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:59:38,829 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 120 proven. 3 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2021-10-13 00:59:38,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:59:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-10-13 00:59:41,340 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:59:41,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356271601] [2021-10-13 00:59:41,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356271601] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 00:59:41,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:59:41,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-10-13 00:59:41,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387198096] [2021-10-13 00:59:41,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 00:59:41,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:59:41,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 00:59:41,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-10-13 00:59:41,343 INFO L87 Difference]: Start difference. First operand 221 states and 236 transitions. Second operand has 17 states, 13 states have (on average 4.615384615384615) internal successors, (60), 17 states have internal predecessors, (60), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-10-13 00:59:42,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:59:42,390 INFO L93 Difference]: Finished difference Result 238 states and 253 transitions. [2021-10-13 00:59:42,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:59:42,392 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 4.615384615384615) internal successors, (60), 17 states have internal predecessors, (60), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 135 [2021-10-13 00:59:42,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:59:42,394 INFO L225 Difference]: With dead ends: 238 [2021-10-13 00:59:42,395 INFO L226 Difference]: Without dead ends: 222 [2021-10-13 00:59:42,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1514.9ms TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:59:42,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-13 00:59:42,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-10-13 00:59:42,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 116 states have (on average 1.6724137931034482) internal successors, (194), 184 states have internal predecessors, (194), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-10-13 00:59:42,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 237 transitions. [2021-10-13 00:59:42,405 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 237 transitions. Word has length 135 [2021-10-13 00:59:42,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:59:42,405 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 237 transitions. [2021-10-13 00:59:42,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 4.615384615384615) internal successors, (60), 17 states have internal predecessors, (60), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-10-13 00:59:42,406 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 237 transitions. [2021-10-13 00:59:42,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-13 00:59:42,408 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:59:42,408 INFO L512 BasicCegarLoop]: trace histogram [18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-10-13 00:59:42,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:59:42,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:59:42,621 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting l4_insertErr0REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-10-13 00:59:42,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:59:42,621 INFO L82 PathProgramCache]: Analyzing trace with hash 983492287, now seen corresponding path program 3 times [2021-10-13 00:59:42,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:59:42,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360540684] [2021-10-13 00:59:42,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:59:42,622 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:59:42,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:59:42,623 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:59:42,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 00:59:43,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 00:59:43,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:59:43,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:59:43,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:59:43,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 00:59:43,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-10-13 00:59:43,833 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 00:59:43,833 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 [2021-10-13 00:59:43,885 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 239 proven. 8 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-10-13 00:59:43,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:59:59,340 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 00:59:59,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 107 treesize of output 147 [2021-10-13 00:59:59,630 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:59:59,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360540684] [2021-10-13 00:59:59,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: No corresponding IProgramVar for v_calloc_model_~ptr~0.base_128 [2021-10-13 00:59:59,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1171387673] [2021-10-13 00:59:59,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:59:59,631 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 00:59:59,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/cvc4 [2021-10-13 00:59:59,638 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 00:59:59,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-13 01:00:00,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 01:00:00,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:00:00,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 01:00:00,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:00:00,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 01:00:02,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 01:00:07,293 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 01:00:07,294 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 19 treesize of output 24 [2021-10-13 01:00:07,332 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 259 proven. 7 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-10-13 01:00:07,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:00:15,813 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:00:15,813 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 62 treesize of output 66 [2021-10-13 01:00:26,282 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_l4_insert_~item~0.base_BEFORE_CALL_4 (_ BitVec 32)) (v_calloc_model_~ptr~0.base_141 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_calloc_model_~ptr~0.base_141 (_ bv1 1)) v_l4_insert_~item~0.base_BEFORE_CALL_4))))))) (_ bv1 1)))) (exists ((v_prenex_3 (_ BitVec 32))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_prenex_3)))))))) (_ bv1 1)))))) is different from true [2021-10-13 01:00:26,784 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 174 proven. 8 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2021-10-13 01:00:26,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1171387673] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 01:00:26,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:00:26,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 17 [2021-10-13 01:00:26,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667212586] [2021-10-13 01:00:26,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 01:00:26,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:00:26,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 01:00:26,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=365, Unknown=14, NotChecked=40, Total=506 [2021-10-13 01:00:26,787 INFO L87 Difference]: Start difference. First operand 222 states and 237 transitions. Second operand has 18 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 7 states have call successors, (22), 5 states have call predecessors, (22), 8 states have return successors, (17), 8 states have call predecessors, (17), 7 states have call successors, (17) [2021-10-13 01:01:20,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:01:20,886 INFO L93 Difference]: Finished difference Result 251 states and 275 transitions. [2021-10-13 01:01:20,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 01:01:20,886 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 7 states have call successors, (22), 5 states have call predecessors, (22), 8 states have return successors, (17), 8 states have call predecessors, (17), 7 states have call successors, (17) Word has length 141 [2021-10-13 01:01:20,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:01:20,890 INFO L225 Difference]: With dead ends: 251 [2021-10-13 01:01:20,890 INFO L226 Difference]: Without dead ends: 251 [2021-10-13 01:01:20,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 391 SyntacticMatches, 18 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 62386.5ms TimeCoverageRelationStatistics Valid=213, Invalid=823, Unknown=24, NotChecked=62, Total=1122 [2021-10-13 01:01:20,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-10-13 01:01:20,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 220. [2021-10-13 01:01:20,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 116 states have (on average 1.6551724137931034) internal successors, (192), 182 states have internal predecessors, (192), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-10-13 01:01:20,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 235 transitions. [2021-10-13 01:01:20,903 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 235 transitions. Word has length 141 [2021-10-13 01:01:20,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:01:20,904 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 235 transitions. [2021-10-13 01:01:20,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 7 states have call successors, (22), 5 states have call predecessors, (22), 8 states have return successors, (17), 8 states have call predecessors, (17), 7 states have call successors, (17) [2021-10-13 01:01:20,904 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 235 transitions. [2021-10-13 01:01:20,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-13 01:01:20,906 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:01:20,907 INFO L512 BasicCegarLoop]: trace histogram [18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-10-13 01:01:20,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 01:01:21,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-10-13 01:01:21,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/cvc4 --incremental --print-success --lang smt [2021-10-13 01:01:21,320 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting l4_insertErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-10-13 01:01:21,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:01:21,320 INFO L82 PathProgramCache]: Analyzing trace with hash 983492288, now seen corresponding path program 1 times [2021-10-13 01:01:21,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:01:21,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292355208] [2021-10-13 01:01:21,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:01:21,321 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:01:21,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:01:21,322 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:01:21,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 01:01:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:01:21,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 01:01:21,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:01:22,930 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 155 proven. 6 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2021-10-13 01:01:22,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:01:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-10-13 01:01:25,763 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:01:25,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292355208] [2021-10-13 01:01:25,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292355208] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 01:01:25,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:01:25,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-13 01:01:25,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306300873] [2021-10-13 01:01:25,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 01:01:25,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:01:25,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 01:01:25,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-10-13 01:01:25,766 INFO L87 Difference]: Start difference. First operand 220 states and 235 transitions. Second operand has 19 states, 15 states have (on average 4.133333333333334) internal successors, (62), 19 states have internal predecessors, (62), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-10-13 01:01:27,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:01:27,133 INFO L93 Difference]: Finished difference Result 237 states and 252 transitions. [2021-10-13 01:01:27,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 01:01:27,134 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 4.133333333333334) internal successors, (62), 19 states have internal predecessors, (62), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 141 [2021-10-13 01:01:27,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:01:27,137 INFO L225 Difference]: With dead ends: 237 [2021-10-13 01:01:27,137 INFO L226 Difference]: Without dead ends: 221 [2021-10-13 01:01:27,138 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1984.1ms TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2021-10-13 01:01:27,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-10-13 01:01:27,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2021-10-13 01:01:27,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 117 states have (on average 1.6495726495726495) internal successors, (193), 183 states have internal predecessors, (193), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-10-13 01:01:27,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 236 transitions. [2021-10-13 01:01:27,148 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 236 transitions. Word has length 141 [2021-10-13 01:01:27,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:01:27,149 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 236 transitions. [2021-10-13 01:01:27,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 4.133333333333334) internal successors, (62), 19 states have internal predecessors, (62), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-10-13 01:01:27,149 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 236 transitions. [2021-10-13 01:01:27,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-10-13 01:01:27,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:01:27,158 INFO L512 BasicCegarLoop]: trace histogram [24, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-10-13 01:01:27,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 01:01:27,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:01:27,380 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting l4_insertErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-10-13 01:01:27,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:01:27,380 INFO L82 PathProgramCache]: Analyzing trace with hash -46715018, now seen corresponding path program 2 times [2021-10-13 01:01:27,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:01:27,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953374168] [2021-10-13 01:01:27,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 01:01:27,381 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:01:27,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:01:27,382 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:01:27,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 01:01:28,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 01:01:28,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:01:28,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 01:01:28,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:01:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 200 proven. 10 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2021-10-13 01:01:29,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:01:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2021-10-13 01:01:32,259 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:01:32,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953374168] [2021-10-13 01:01:32,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953374168] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 01:01:32,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:01:32,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-13 01:01:32,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29653210] [2021-10-13 01:01:32,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 01:01:32,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:01:32,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 01:01:32,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-10-13 01:01:32,261 INFO L87 Difference]: Start difference. First operand 221 states and 236 transitions. Second operand has 21 states, 17 states have (on average 3.764705882352941) internal successors, (64), 21 states have internal predecessors, (64), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-10-13 01:01:33,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:01:33,725 INFO L93 Difference]: Finished difference Result 238 states and 253 transitions. [2021-10-13 01:01:33,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 01:01:33,726 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 3.764705882352941) internal successors, (64), 21 states have internal predecessors, (64), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 147 [2021-10-13 01:01:33,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:01:33,728 INFO L225 Difference]: With dead ends: 238 [2021-10-13 01:01:33,728 INFO L226 Difference]: Without dead ends: 222 [2021-10-13 01:01:33,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 273 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2192.6ms TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2021-10-13 01:01:33,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-13 01:01:33,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-10-13 01:01:33,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 118 states have (on average 1.6440677966101696) internal successors, (194), 184 states have internal predecessors, (194), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-10-13 01:01:33,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 237 transitions. [2021-10-13 01:01:33,738 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 237 transitions. Word has length 147 [2021-10-13 01:01:33,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:01:33,739 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 237 transitions. [2021-10-13 01:01:33,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 3.764705882352941) internal successors, (64), 21 states have internal predecessors, (64), 6 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2021-10-13 01:01:33,739 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 237 transitions. [2021-10-13 01:01:33,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-10-13 01:01:33,741 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:01:33,742 INFO L512 BasicCegarLoop]: trace histogram [30, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-10-13 01:01:33,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 01:01:33,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:01:33,976 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting l4_insertErr1REQUIRES_VIOLATION === [l3_destroyErr0REQUIRES_VIOLATION, l3_destroyErr1REQUIRES_VIOLATION, l3_destroyErr2REQUIRES_VIOLATION, l3_destroyErr3REQUIRES_VIOLATION (and 66 more)] === [2021-10-13 01:01:33,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:01:33,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1986717504, now seen corresponding path program 3 times [2021-10-13 01:01:33,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:01:33,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484145381] [2021-10-13 01:01:33,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 01:01:33,978 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:01:33,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:01:33,978 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:01:33,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 01:01:34,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 01:01:34,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:01:34,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-13 01:01:34,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:01:34,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-13 01:01:34,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 01:01:41,110 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 14 treesize of output 13 [2021-10-13 01:01:41,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-10-13 01:01:44,014 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-13 01:01:44,014 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 38 treesize of output 40 [2021-10-13 01:01:44,060 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 01:01:44,060 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 37 treesize of output 37 [2021-10-13 01:01:45,280 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 242 proven. 49 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2021-10-13 01:01:45,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:02:02,206 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_l4_insert_~item~0.base_BEFORE_CALL_6 (_ BitVec 32)) (v_calloc_model_~ptr~0.base_259 (_ BitVec 32)) (v_l4_insert_~item~0.offset_BEFORE_CALL_2 (_ BitVec 32))) (or (and (forall ((v_calloc_model_~nmemb_264 (_ BitVec 32)) (v_calloc_model_~size_264 (_ BitVec 32))) (bvule (bvadd (_ bv8 32) v_l4_insert_~item~0.offset_BEFORE_CALL_2) (select (store |c_#length| v_calloc_model_~ptr~0.base_259 (bvmul v_calloc_model_~nmemb_264 v_calloc_model_~size_264)) v_l4_insert_~item~0.base_BEFORE_CALL_6))) (bvule (bvadd (_ bv4 32) v_l4_insert_~item~0.offset_BEFORE_CALL_2) (bvadd (_ bv8 32) v_l4_insert_~item~0.offset_BEFORE_CALL_2))) (exists ((v_calloc_model_~ptr~0.base_256 (_ BitVec 32))) (and (or (not (bvule (bvadd (_ bv4 32) v_l4_insert_~item~0.offset_BEFORE_CALL_2) (bvadd (_ bv8 32) v_l4_insert_~item~0.offset_BEFORE_CALL_2))) (exists ((v_calloc_model_~size_261 (_ BitVec 32)) (v_calloc_model_~nmemb_261 (_ BitVec 32))) (not (bvule (bvadd (_ bv8 32) v_l4_insert_~item~0.offset_BEFORE_CALL_2) (select (store |c_old(#length)| v_calloc_model_~ptr~0.base_256 (bvmul v_calloc_model_~nmemb_261 v_calloc_model_~size_261)) v_l4_insert_~item~0.base_BEFORE_CALL_6))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_calloc_model_~ptr~0.base_256)))))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_calloc_model_~ptr~0.base_259))))))) is different from false [2021-10-13 01:02:05,953 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:02:05,954 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 138 treesize of output 142 [2021-10-13 01:02:06,087 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 01:02:06,087 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 142 treesize of output 146 [2021-10-13 01:02:26,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2021-10-13 01:02:28,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2021-10-13 01:02:29,016 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 86 proven. 4 refuted. 0 times theorem prover too weak. 764 trivial. 1 not checked. [2021-10-13 01:02:29,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:02:29,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484145381] [2021-10-13 01:02:29,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484145381] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 01:02:29,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:02:29,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2021-10-13 01:02:29,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787072969] [2021-10-13 01:02:29,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 01:02:29,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:02:29,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 01:02:29,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=522, Unknown=6, NotChecked=46, Total=650 [2021-10-13 01:02:29,019 INFO L87 Difference]: Start difference. First operand 222 states and 237 transitions. Second operand has 26 states, 22 states have (on average 2.727272727272727) internal successors, (60), 19 states have internal predecessors, (60), 11 states have call successors, (24), 5 states have call predecessors, (24), 9 states have return successors, (19), 12 states have call predecessors, (19), 11 states have call successors, (19) [2021-10-13 01:04:19,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:04:19,099 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-10-13 01:04:19,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 01:04:19,099 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 2.727272727272727) internal successors, (60), 19 states have internal predecessors, (60), 11 states have call successors, (24), 5 states have call predecessors, (24), 9 states have return successors, (19), 12 states have call predecessors, (19), 11 states have call successors, (19) Word has length 153 [2021-10-13 01:04:19,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:04:19,100 INFO L225 Difference]: With dead ends: 50 [2021-10-13 01:04:19,100 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 01:04:19,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 278 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 99839.5ms TimeCoverageRelationStatistics Valid=202, Invalid=1259, Unknown=25, NotChecked=74, Total=1560 [2021-10-13 01:04:19,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 01:04:19,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 01:04:19,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:04:19,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 01:04:19,102 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 153 [2021-10-13 01:04:19,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:04:19,103 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:04:19,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 2.727272727272727) internal successors, (60), 19 states have internal predecessors, (60), 11 states have call successors, (24), 5 states have call predecessors, (24), 9 states have return successors, (19), 12 states have call predecessors, (19), 11 states have call successors, (19) [2021-10-13 01:04:19,103 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 01:04:19,104 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 01:04:19,106 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l3_destroyErr0REQUIRES_VIOLATION [2021-10-13 01:04:19,107 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l3_destroyErr1REQUIRES_VIOLATION [2021-10-13 01:04:19,107 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l3_destroyErr2REQUIRES_VIOLATION [2021-10-13 01:04:19,107 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l3_destroyErr3REQUIRES_VIOLATION [2021-10-13 01:04:19,107 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l3_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:04:19,108 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l3_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:04:19,108 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l3_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:04:19,108 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l3_insertErr0REQUIRES_VIOLATION [2021-10-13 01:04:19,108 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l3_insertErr1REQUIRES_VIOLATION [2021-10-13 01:04:19,108 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l3_insertErr2REQUIRES_VIOLATION [2021-10-13 01:04:19,108 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l3_insertErr3REQUIRES_VIOLATION [2021-10-13 01:04:19,108 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l3_insertErr4REQUIRES_VIOLATION [2021-10-13 01:04:19,108 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l3_insertErr5REQUIRES_VIOLATION [2021-10-13 01:04:19,109 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l1_insertErr0REQUIRES_VIOLATION [2021-10-13 01:04:19,109 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l1_insertErr1REQUIRES_VIOLATION [2021-10-13 01:04:19,109 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l1_insertErr2REQUIRES_VIOLATION [2021-10-13 01:04:19,109 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l1_insertErr3REQUIRES_VIOLATION [2021-10-13 01:04:19,109 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l1_insertErr4REQUIRES_VIOLATION [2021-10-13 01:04:19,109 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l1_insertErr5REQUIRES_VIOLATION [2021-10-13 01:04:19,109 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l4_destroyErr0REQUIRES_VIOLATION [2021-10-13 01:04:19,109 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l4_destroyErr1REQUIRES_VIOLATION [2021-10-13 01:04:19,109 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l4_destroyErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:04:19,110 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l4_destroyErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:04:19,110 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l4_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:04:19,110 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l2_insertErr0REQUIRES_VIOLATION [2021-10-13 01:04:19,110 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l2_insertErr1REQUIRES_VIOLATION [2021-10-13 01:04:19,110 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l2_insertErr2REQUIRES_VIOLATION [2021-10-13 01:04:19,111 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l2_insertErr3REQUIRES_VIOLATION [2021-10-13 01:04:19,111 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l2_insertErr4REQUIRES_VIOLATION [2021-10-13 01:04:19,111 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l2_insertErr5REQUIRES_VIOLATION [2021-10-13 01:04:19,111 INFO L764 garLoopResultBuilder]: Registering result SAFE for location calloc_modelErr0REQUIRES_VIOLATION [2021-10-13 01:04:19,111 INFO L764 garLoopResultBuilder]: Registering result SAFE for location calloc_modelErr1REQUIRES_VIOLATION [2021-10-13 01:04:19,111 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l1_destroyErr0REQUIRES_VIOLATION [2021-10-13 01:04:19,111 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l1_destroyErr1REQUIRES_VIOLATION [2021-10-13 01:04:19,112 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l1_destroyErr2REQUIRES_VIOLATION [2021-10-13 01:04:19,112 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l1_destroyErr3REQUIRES_VIOLATION [2021-10-13 01:04:19,112 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l1_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:04:19,112 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l1_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:04:19,112 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l1_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:04:19,112 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION [2021-10-13 01:04:19,112 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION [2021-10-13 01:04:19,112 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2ENSURES_VIOLATIONMEMORY_LEAK [2021-10-13 01:04:19,113 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l2_destroyErr0REQUIRES_VIOLATION [2021-10-13 01:04:19,113 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l2_destroyErr1REQUIRES_VIOLATION [2021-10-13 01:04:19,113 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l2_destroyErr2REQUIRES_VIOLATION [2021-10-13 01:04:19,113 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l2_destroyErr3REQUIRES_VIOLATION [2021-10-13 01:04:19,113 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l2_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:04:19,113 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l2_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:04:19,113 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l2_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:04:19,113 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l0_destroyErr0REQUIRES_VIOLATION [2021-10-13 01:04:19,113 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l0_destroyErr1REQUIRES_VIOLATION [2021-10-13 01:04:19,114 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l0_destroyErr2REQUIRES_VIOLATION [2021-10-13 01:04:19,114 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l0_destroyErr3REQUIRES_VIOLATION [2021-10-13 01:04:19,114 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l0_destroyErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:04:19,114 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l0_destroyErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:04:19,114 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l0_destroyErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 01:04:19,114 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l0_insertErr0REQUIRES_VIOLATION [2021-10-13 01:04:19,114 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l0_insertErr1REQUIRES_VIOLATION [2021-10-13 01:04:19,114 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l0_insertErr2REQUIRES_VIOLATION [2021-10-13 01:04:19,115 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l0_insertErr3REQUIRES_VIOLATION [2021-10-13 01:04:19,115 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l0_insertErr4REQUIRES_VIOLATION [2021-10-13 01:04:19,115 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l0_insertErr5REQUIRES_VIOLATION [2021-10-13 01:04:19,115 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l4_insertErr0REQUIRES_VIOLATION [2021-10-13 01:04:19,115 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l4_insertErr1REQUIRES_VIOLATION [2021-10-13 01:04:19,115 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l4_insertErr2REQUIRES_VIOLATION [2021-10-13 01:04:19,115 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l4_insertErr3REQUIRES_VIOLATION [2021-10-13 01:04:19,115 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l4_insertErr4REQUIRES_VIOLATION [2021-10-13 01:04:19,115 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l4_insertErr5REQUIRES_VIOLATION [2021-10-13 01:04:19,116 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l4_insertErr6REQUIRES_VIOLATION [2021-10-13 01:04:19,116 INFO L764 garLoopResultBuilder]: Registering result SAFE for location l4_insertErr7REQUIRES_VIOLATION [2021-10-13 01:04:19,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 01:04:19,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:04:19,325 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:04:19,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:04:19 BoogieIcfgContainer [2021-10-13 01:04:19,329 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:04:19,330 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:04:19,330 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:04:19,330 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:04:19,331 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:59:23" (3/4) ... [2021-10-13 01:04:19,334 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 01:04:19,341 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-10-13 01:04:19,342 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.setCurrentRoundingMode [2021-10-13 01:04:19,342 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure l0_insert [2021-10-13 01:04:19,342 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure l3_destroy [2021-10-13 01:04:19,342 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset [2021-10-13 01:04:19,342 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure l4_destroy [2021-10-13 01:04:19,342 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-10-13 01:04:19,343 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure l2_insert [2021-10-13 01:04:19,343 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-10-13 01:04:19,343 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-10-13 01:04:19,343 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure l3_insert [2021-10-13 01:04:19,343 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure l1_insert [2021-10-13 01:04:19,343 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-13 01:04:19,343 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure calloc_model [2021-10-13 01:04:19,344 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure l4_insert [2021-10-13 01:04:19,344 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure l0_destroy [2021-10-13 01:04:19,344 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure zalloc_or_die [2021-10-13 01:04:19,344 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-10-13 01:04:19,344 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-13 01:04:19,344 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure l1_destroy [2021-10-13 01:04:19,345 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-10-13 01:04:19,345 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure l2_destroy [2021-10-13 01:04:19,354 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2021-10-13 01:04:19,355 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-13 01:04:19,355 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:04:19,356 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 01:04:19,356 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:04:19,416 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:04:19,416 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:04:19,417 INFO L168 Benchmark]: Toolchain (without parser) took 298088.70 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 53.5 MB in the beginning and 45.4 MB in the end (delta: 8.1 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. [2021-10-13 01:04:19,417 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 90.2 MB. Free memory is still 71.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:04:19,418 INFO L168 Benchmark]: CACSL2BoogieTranslator took 893.71 ms. Allocated memory is still 90.2 MB. Free memory was 53.2 MB in the beginning and 56.3 MB in the end (delta: -3.0 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:04:19,418 INFO L168 Benchmark]: Boogie Preprocessor took 139.11 ms. Allocated memory is still 90.2 MB. Free memory was 56.3 MB in the beginning and 52.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:04:19,419 INFO L168 Benchmark]: RCFGBuilder took 1526.58 ms. Allocated memory is still 90.2 MB. Free memory was 52.1 MB in the beginning and 45.1 MB in the end (delta: 7.0 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:04:19,419 INFO L168 Benchmark]: TraceAbstraction took 295422.64 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 44.6 MB in the beginning and 51.5 MB in the end (delta: -6.9 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2021-10-13 01:04:19,420 INFO L168 Benchmark]: Witness Printer took 86.26 ms. Allocated memory is still 111.1 MB. Free memory was 51.5 MB in the beginning and 45.4 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 01:04:19,421 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 90.2 MB. Free memory is still 71.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 893.71 ms. Allocated memory is still 90.2 MB. Free memory was 53.2 MB in the beginning and 56.3 MB in the end (delta: -3.0 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 139.11 ms. Allocated memory is still 90.2 MB. Free memory was 56.3 MB in the beginning and 52.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1526.58 ms. Allocated memory is still 90.2 MB. Free memory was 52.1 MB in the beginning and 45.1 MB in the end (delta: 7.0 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 295422.64 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 44.6 MB in the beginning and 51.5 MB in the end (delta: -6.9 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * Witness Printer took 86.26 ms. Allocated memory is still 111.1 MB. Free memory was 51.5 MB in the beginning and 45.4 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 727]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 727]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 728]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 728]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 729]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 729]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 729]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 685]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 685]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 685]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 685]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 686]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 686]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 703]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 703]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 703]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 703]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 704]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 704]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 718]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 718]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 719]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 719]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 719]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 694]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 694]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 694]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 694]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 695]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 695]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 642]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 642]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 747]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 747]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 748]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 748]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 749]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 749]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 749]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 770]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 770]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 764]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 737]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 737]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 738]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 738]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 739]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 739]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 739]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 757]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 757]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 758]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 758]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 759]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 759]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 759]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 712]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 712]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 712]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 712]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 713]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 713]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 675]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 675]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 676]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 676]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 676]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 676]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 677]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 677]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 23 procedures, 237 locations, 70 error locations. Started 1 CEGAR loops. OverallTime: 295352.6ms, OverallIterations: 10, TraceHistogramMax: 30, EmptinessCheckTime: 43.4ms, AutomataDifference: 172462.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 20.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1914 SDtfs, 490 SDslu, 12173 SDs, 0 SdLazy, 2614 SolverSat, 260 SolverUnsat, 25 SolverUnknown, 0 SolverNotchecked, 72136.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2186 GetRequests, 1988 SyntacticMatches, 26 SemanticMatches, 172 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 170513.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=222occurred in iteration=6, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 172.3ms AutomataMinimizationTime, 10 MinimizatonAttempts, 31 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 419.7ms SsaConstructionTime, 1601.8ms SatisfiabilityAnalysisTime, 98212.7ms InterpolantComputationTime, 1000 NumberOfCodeBlocks, 820 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1980 ConstructedInterpolants, 62 QuantifiedInterpolants, 4707 SizeOfPredicates, 38 NumberOfNonLiveVariables, 3766 ConjunctsInSsa, 116 ConjunctsInUnsatCore, 20 InterpolantComputations, 7 PerfectInterpolantSequences, 6193/6852 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 70 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 01:04:19,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6445335-a092-4b02-80ea-62501d97be7b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...