./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/insertionSort_recursive.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/insertionSort_recursive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN --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 64bit --witnessprinter.graph.data.programhash 1ae4a3f744c0a8577333c2c3dfb4ecaabbd2cf6e1675b06577194a98b8d1aee1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:11:50,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:11:50,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:11:50,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:11:50,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:11:50,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:11:50,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:11:50,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:11:50,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:11:50,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:11:50,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:11:50,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:11:50,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:11:50,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:11:50,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:11:50,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:11:50,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:11:50,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:11:50,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:11:50,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:11:50,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:11:50,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:11:50,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:11:50,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:11:50,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:11:50,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:11:50,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:11:50,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:11:50,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:11:50,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:11:50,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:11:50,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:11:50,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:11:50,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:11:51,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:11:51,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:11:51,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:11:51,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:11:51,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:11:51,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:11:51,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:11:51,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2022-11-20 11:11:51,047 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:11:51,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:11:51,053 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:11:51,053 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:11:51,054 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:11:51,054 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:11:51,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:11:51,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:11:51,055 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:11:51,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:11:51,057 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:11:51,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:11:51,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:11:51,057 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:11:51,058 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:11:51,058 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:11:51,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:11:51,058 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:11:51,058 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:11:51,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:11:51,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:11:51,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:11:51,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:11:51,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:11:51,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:11:51,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:11:51,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:11:51,060 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_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ae4a3f744c0a8577333c2c3dfb4ecaabbd2cf6e1675b06577194a98b8d1aee1 [2022-11-20 11:11:51,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:11:51,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:11:51,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:11:51,378 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:11:51,379 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:11:51,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-recursive-malloc/insertionSort_recursive.i [2022-11-20 11:11:54,399 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:11:54,635 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:11:54,636 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/sv-benchmarks/c/termination-recursive-malloc/insertionSort_recursive.i [2022-11-20 11:11:54,641 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/data/58b309738/63e55a88d95345889756de763ee37db9/FLAGb3a4e6cc3 [2022-11-20 11:11:54,661 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/data/58b309738/63e55a88d95345889756de763ee37db9 [2022-11-20 11:11:54,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:11:54,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:11:54,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:11:54,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:11:54,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:11:54,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:11:54" (1/1) ... [2022-11-20 11:11:54,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72bd646c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:54, skipping insertion in model container [2022-11-20 11:11:54,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:11:54" (1/1) ... [2022-11-20 11:11:54,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:11:54,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:11:54,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:11:54,865 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:11:54,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:11:54,891 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:11:54,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:54 WrapperNode [2022-11-20 11:11:54,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:11:54,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:11:54,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:11:54,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:11:54,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:54" (1/1) ... [2022-11-20 11:11:54,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:54" (1/1) ... [2022-11-20 11:11:54,925 INFO L138 Inliner]: procedures = 11, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2022-11-20 11:11:54,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:11:54,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:11:54,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:11:54,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:11:54,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:54" (1/1) ... [2022-11-20 11:11:54,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:54" (1/1) ... [2022-11-20 11:11:54,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:54" (1/1) ... [2022-11-20 11:11:54,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:54" (1/1) ... [2022-11-20 11:11:54,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:54" (1/1) ... [2022-11-20 11:11:54,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:54" (1/1) ... [2022-11-20 11:11:54,950 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:54" (1/1) ... [2022-11-20 11:11:54,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:54" (1/1) ... [2022-11-20 11:11:54,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:11:54,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:11:54,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:11:54,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:11:54,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:54" (1/1) ... [2022-11-20 11:11:54,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:11:54,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:54,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:54,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:11:55,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:11:55,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:11:55,035 INFO L130 BoogieDeclarations]: Found specification of procedure insertionSort [2022-11-20 11:11:55,035 INFO L138 BoogieDeclarations]: Found implementation of procedure insertionSort [2022-11-20 11:11:55,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:11:55,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:11:55,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:11:55,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:11:55,105 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:11:55,107 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:11:55,518 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:11:55,524 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:11:55,525 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:11:55,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:11:55 BoogieIcfgContainer [2022-11-20 11:11:55,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:11:55,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:11:55,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:11:55,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:11:55,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:11:54" (1/3) ... [2022-11-20 11:11:55,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771bd3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:11:55, skipping insertion in model container [2022-11-20 11:11:55,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:54" (2/3) ... [2022-11-20 11:11:55,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771bd3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:11:55, skipping insertion in model container [2022-11-20 11:11:55,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:11:55" (3/3) ... [2022-11-20 11:11:55,564 INFO L112 eAbstractionObserver]: Analyzing ICFG insertionSort_recursive.i [2022-11-20 11:11:55,588 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:11:55,588 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-20 11:11:55,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:11:55,742 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@f79ba92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:11:55,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-11-20 11:11:55,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 29 states have (on average 1.793103448275862) internal successors, (52), 45 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:11:55,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 11:11:55,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:55,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 11:11:55,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 11:11:55,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:55,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2434047, now seen corresponding path program 1 times [2022-11-20 11:11:55,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:55,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413047339] [2022-11-20 11:11:55,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:55,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:56,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:56,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:56,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413047339] [2022-11-20 11:11:56,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413047339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:56,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:56,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:11:56,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898831761] [2022-11-20 11:11:56,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:56,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:11:56,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:56,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:11:56,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:11:56,068 INFO L87 Difference]: Start difference. First operand has 49 states, 29 states have (on average 1.793103448275862) internal successors, (52), 45 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-20 11:11:56,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:56,175 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2022-11-20 11:11:56,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:11:56,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) Word has length 4 [2022-11-20 11:11:56,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:56,192 INFO L225 Difference]: With dead ends: 50 [2022-11-20 11:11:56,192 INFO L226 Difference]: Without dead ends: 47 [2022-11-20 11:11:56,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:11:56,200 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 2 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:56,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 85 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:11:56,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-20 11:11:56,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-20 11:11:56,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 43 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:11:56,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-11-20 11:11:56,248 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 4 [2022-11-20 11:11:56,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:56,250 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-11-20 11:11:56,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-20 11:11:56,250 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-11-20 11:11:56,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 11:11:56,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:56,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 11:11:56,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:11:56,252 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 11:11:56,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:56,253 INFO L85 PathProgramCache]: Analyzing trace with hash 75456887, now seen corresponding path program 1 times [2022-11-20 11:11:56,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:56,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975629421] [2022-11-20 11:11:56,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:56,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:56,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:56,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975629421] [2022-11-20 11:11:56,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975629421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:56,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:56,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:11:56,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526095068] [2022-11-20 11:11:56,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:56,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:11:56,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:56,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:11:56,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:11:56,417 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-20 11:11:56,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:56,469 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2022-11-20 11:11:56,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:11:56,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2022-11-20 11:11:56,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:56,472 INFO L225 Difference]: With dead ends: 45 [2022-11-20 11:11:56,472 INFO L226 Difference]: Without dead ends: 45 [2022-11-20 11:11:56,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:11:56,481 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 9 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:56,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 66 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:11:56,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-20 11:11:56,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-20 11:11:56,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 41 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:11:56,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2022-11-20 11:11:56,489 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 5 [2022-11-20 11:11:56,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:56,489 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2022-11-20 11:11:56,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-20 11:11:56,490 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2022-11-20 11:11:56,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 11:11:56,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:56,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 11:11:56,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:11:56,491 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 11:11:56,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:56,492 INFO L85 PathProgramCache]: Analyzing trace with hash 75456888, now seen corresponding path program 1 times [2022-11-20 11:11:56,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:56,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58143692] [2022-11-20 11:11:56,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:56,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:56,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:56,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:56,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58143692] [2022-11-20 11:11:56,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58143692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:56,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:56,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:11:56,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242031598] [2022-11-20 11:11:56,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:56,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:11:56,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:56,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:11:56,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:11:56,730 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 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) [2022-11-20 11:11:56,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:56,862 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2022-11-20 11:11:56,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:11:56,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 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) Word has length 5 [2022-11-20 11:11:56,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:56,864 INFO L225 Difference]: With dead ends: 56 [2022-11-20 11:11:56,864 INFO L226 Difference]: Without dead ends: 56 [2022-11-20 11:11:56,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:11:56,865 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 23 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:56,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 125 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:11:56,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-20 11:11:56,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2022-11-20 11:11:56,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 44 states have internal predecessors, (49), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:11:56,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2022-11-20 11:11:56,872 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 5 [2022-11-20 11:11:56,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:56,873 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2022-11-20 11:11:56,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 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) [2022-11-20 11:11:56,873 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2022-11-20 11:11:56,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 11:11:56,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:56,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:56,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:11:56,877 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 11:11:56,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:56,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1667003476, now seen corresponding path program 1 times [2022-11-20 11:11:56,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:56,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772693117] [2022-11-20 11:11:56,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:56,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:56,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:56,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:56,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772693117] [2022-11-20 11:11:56,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772693117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:56,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:56,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:11:56,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744567392] [2022-11-20 11:11:56,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:56,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:11:56,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:56,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:11:56,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:11:56,972 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:57,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:57,003 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2022-11-20 11:11:57,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:11:57,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 11:11:57,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:57,009 INFO L225 Difference]: With dead ends: 49 [2022-11-20 11:11:57,009 INFO L226 Difference]: Without dead ends: 49 [2022-11-20 11:11:57,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:11:57,010 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 3 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:57,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 87 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:11:57,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-20 11:11:57,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2022-11-20 11:11:57,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 43 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:11:57,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-11-20 11:11:57,021 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 8 [2022-11-20 11:11:57,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:57,021 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-11-20 11:11:57,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:57,021 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-11-20 11:11:57,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:11:57,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:57,022 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:57,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:11:57,023 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 11:11:57,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:57,023 INFO L85 PathProgramCache]: Analyzing trace with hash 176533115, now seen corresponding path program 1 times [2022-11-20 11:11:57,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:57,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350487615] [2022-11-20 11:11:57,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:57,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:57,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:57,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350487615] [2022-11-20 11:11:57,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350487615] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:57,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085573858] [2022-11-20 11:11:57,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:57,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:57,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:57,462 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:57,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:11:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:57,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:11:57,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:57,636 INFO L350 Elim1Store]: Elim1 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 10 treesize of output 9 [2022-11-20 11:11:57,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:57,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:58,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085573858] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:58,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:11:58,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2022-11-20 11:11:58,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698020629] [2022-11-20 11:11:58,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:58,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:11:58,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:58,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:11:58,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:11:58,371 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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) [2022-11-20 11:11:58,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:58,630 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2022-11-20 11:11:58,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:11:58,633 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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) Word has length 9 [2022-11-20 11:11:58,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:58,634 INFO L225 Difference]: With dead ends: 47 [2022-11-20 11:11:58,634 INFO L226 Difference]: Without dead ends: 47 [2022-11-20 11:11:58,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:11:58,636 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 40 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:58,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 227 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:11:58,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-20 11:11:58,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2022-11-20 11:11:58,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 40 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:11:58,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2022-11-20 11:11:58,641 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 9 [2022-11-20 11:11:58,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:58,641 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2022-11-20 11:11:58,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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) [2022-11-20 11:11:58,642 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2022-11-20 11:11:58,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 11:11:58,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:58,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:58,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:58,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:58,877 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 11:11:58,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:58,878 INFO L85 PathProgramCache]: Analyzing trace with hash 2056807537, now seen corresponding path program 1 times [2022-11-20 11:11:58,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:58,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363606148] [2022-11-20 11:11:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:58,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:58,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:58,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:58,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363606148] [2022-11-20 11:11:58,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363606148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:58,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:58,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:11:58,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316828638] [2022-11-20 11:11:58,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:58,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:11:58,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:58,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:11:58,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:11:58,944 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:59,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:59,023 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-11-20 11:11:59,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:11:59,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 11:11:59,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:59,026 INFO L225 Difference]: With dead ends: 39 [2022-11-20 11:11:59,026 INFO L226 Difference]: Without dead ends: 39 [2022-11-20 11:11:59,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:11:59,030 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 52 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:59,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 49 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:11:59,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-20 11:11:59,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-20 11:11:59,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 35 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:11:59,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-11-20 11:11:59,044 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 12 [2022-11-20 11:11:59,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:59,044 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-11-20 11:11:59,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:59,044 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-11-20 11:11:59,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 11:11:59,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:59,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:59,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:11:59,046 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 11:11:59,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:59,046 INFO L85 PathProgramCache]: Analyzing trace with hash 2056807538, now seen corresponding path program 1 times [2022-11-20 11:11:59,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:59,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275311717] [2022-11-20 11:11:59,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:59,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:59,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:59,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:59,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275311717] [2022-11-20 11:11:59,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275311717] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:59,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171038417] [2022-11-20 11:11:59,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:59,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:59,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:59,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:59,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:11:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:59,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:11:59,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:59,340 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 11:11:59,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:59,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:59,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171038417] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:59,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:59,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 13 [2022-11-20 11:11:59,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367675809] [2022-11-20 11:11:59,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:59,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:11:59,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:59,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:11:59,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:11:59,572 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:59,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:59,710 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2022-11-20 11:11:59,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:11:59,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 11:11:59,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:59,715 INFO L225 Difference]: With dead ends: 65 [2022-11-20 11:11:59,715 INFO L226 Difference]: Without dead ends: 65 [2022-11-20 11:11:59,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:11:59,716 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 72 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:59,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 78 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:11:59,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-20 11:11:59,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2022-11-20 11:11:59,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 52 states have internal predecessors, (63), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:11:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2022-11-20 11:11:59,723 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 12 [2022-11-20 11:11:59,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:59,723 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2022-11-20 11:11:59,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:59,724 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2022-11-20 11:11:59,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 11:11:59,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:59,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:59,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 11:11:59,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:59,930 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 11:11:59,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:59,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1903997848, now seen corresponding path program 1 times [2022-11-20 11:11:59,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:59,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241277196] [2022-11-20 11:11:59,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:59,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:59,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:11:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:59,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:11:59,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:59,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241277196] [2022-11-20 11:11:59,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241277196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:59,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:59,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:11:59,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292928264] [2022-11-20 11:11:59,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:59,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:11:59,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:59,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:11:59,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:59,970 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:12:00,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:00,017 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2022-11-20 11:12:00,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:12:00,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-20 11:12:00,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:00,019 INFO L225 Difference]: With dead ends: 81 [2022-11-20 11:12:00,019 INFO L226 Difference]: Without dead ends: 81 [2022-11-20 11:12:00,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:12:00,020 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 22 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:00,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 79 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:12:00,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-20 11:12:00,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 57. [2022-11-20 11:12:00,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 51 states have internal predecessors, (62), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:12:00,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2022-11-20 11:12:00,027 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 15 [2022-11-20 11:12:00,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:00,028 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2022-11-20 11:12:00,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:12:00,028 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2022-11-20 11:12:00,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:12:00,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:00,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:00,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:12:00,030 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting insertionSortErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 11:12:00,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:00,030 INFO L85 PathProgramCache]: Analyzing trace with hash -168557033, now seen corresponding path program 1 times [2022-11-20 11:12:00,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:00,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278931135] [2022-11-20 11:12:00,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:00,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:00,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:12:00,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:00,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278931135] [2022-11-20 11:12:00,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278931135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:00,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:00,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:12:00,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435887753] [2022-11-20 11:12:00,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:00,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:12:00,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:00,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:12:00,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:12:00,100 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:00,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:00,207 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2022-11-20 11:12:00,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:12:00,208 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 11:12:00,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:00,209 INFO L225 Difference]: With dead ends: 55 [2022-11-20 11:12:00,209 INFO L226 Difference]: Without dead ends: 55 [2022-11-20 11:12:00,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:12:00,221 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 31 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:00,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 150 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:12:00,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-20 11:12:00,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2022-11-20 11:12:00,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 46 states have internal predecessors, (52), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:12:00,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2022-11-20 11:12:00,234 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 16 [2022-11-20 11:12:00,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:00,234 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2022-11-20 11:12:00,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:00,235 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2022-11-20 11:12:00,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:12:00,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:00,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:00,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:12:00,236 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting insertionSortErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 11:12:00,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:00,237 INFO L85 PathProgramCache]: Analyzing trace with hash -930294703, now seen corresponding path program 1 times [2022-11-20 11:12:00,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:00,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934416101] [2022-11-20 11:12:00,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:00,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:00,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:00,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:00,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934416101] [2022-11-20 11:12:00,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934416101] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:12:00,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46747486] [2022-11-20 11:12:00,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:00,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:00,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:00,555 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:00,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:12:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:00,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:12:00,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:00,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:12:00,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:12:00,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46747486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:00,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:12:00,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2022-11-20 11:12:00,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000020593] [2022-11-20 11:12:00,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:00,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:12:00,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:00,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:12:00,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:12:00,768 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:00,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:00,931 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2022-11-20 11:12:00,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:12:00,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 11:12:00,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:00,932 INFO L225 Difference]: With dead ends: 54 [2022-11-20 11:12:00,932 INFO L226 Difference]: Without dead ends: 54 [2022-11-20 11:12:00,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:12:00,933 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 34 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:00,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 131 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:12:00,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-20 11:12:00,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2022-11-20 11:12:00,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 46 states have internal predecessors, (51), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:12:00,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2022-11-20 11:12:00,937 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 17 [2022-11-20 11:12:00,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:00,938 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2022-11-20 11:12:00,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:00,938 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2022-11-20 11:12:00,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:12:00,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:00,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:00,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:01,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:12:01,145 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 11:12:01,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:01,145 INFO L85 PathProgramCache]: Analyzing trace with hash -85860309, now seen corresponding path program 1 times [2022-11-20 11:12:01,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:01,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572221517] [2022-11-20 11:12:01,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:01,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:01,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:12:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:01,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:12:01,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:01,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572221517] [2022-11-20 11:12:01,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572221517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:01,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:01,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:12:01,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493257644] [2022-11-20 11:12:01,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:01,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:12:01,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:01,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:12:01,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:12:01,232 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:12:01,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:01,309 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2022-11-20 11:12:01,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:12:01,309 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-20 11:12:01,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:01,310 INFO L225 Difference]: With dead ends: 69 [2022-11-20 11:12:01,310 INFO L226 Difference]: Without dead ends: 67 [2022-11-20 11:12:01,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:12:01,311 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 59 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:01,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 107 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:12:01,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-20 11:12:01,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 52. [2022-11-20 11:12:01,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 46 states have internal predecessors, (50), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:12:01,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2022-11-20 11:12:01,315 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 17 [2022-11-20 11:12:01,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:01,315 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2022-11-20 11:12:01,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:12:01,316 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2022-11-20 11:12:01,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 11:12:01,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:01,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:01,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:12:01,316 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 11:12:01,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:01,317 INFO L85 PathProgramCache]: Analyzing trace with hash -73595863, now seen corresponding path program 1 times [2022-11-20 11:12:01,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:01,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643968938] [2022-11-20 11:12:01,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:01,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:01,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:01,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643968938] [2022-11-20 11:12:01,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643968938] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:12:01,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708216926] [2022-11-20 11:12:01,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:01,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:01,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:01,455 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:01,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:12:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:01,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:12:01,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:01,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:01,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:01,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708216926] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:01,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:12:01,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2022-11-20 11:12:01,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295738966] [2022-11-20 11:12:01,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:01,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:12:01,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:01,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:12:01,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:12:01,807 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 18 states, 15 states have (on average 3.0) internal successors, (45), 13 states have internal predecessors, (45), 3 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:02,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:02,005 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2022-11-20 11:12:02,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:12:02,006 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 3.0) internal successors, (45), 13 states have internal predecessors, (45), 3 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-20 11:12:02,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:02,007 INFO L225 Difference]: With dead ends: 84 [2022-11-20 11:12:02,007 INFO L226 Difference]: Without dead ends: 84 [2022-11-20 11:12:02,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:12:02,008 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 64 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:02,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 351 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:12:02,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-20 11:12:02,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2022-11-20 11:12:02,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 65 states have internal predecessors, (69), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 11:12:02,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2022-11-20 11:12:02,013 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 22 [2022-11-20 11:12:02,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:02,014 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2022-11-20 11:12:02,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 3.0) internal successors, (45), 13 states have internal predecessors, (45), 3 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:02,014 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2022-11-20 11:12:02,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 11:12:02,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:02,015 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:02,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:02,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:12:02,221 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 11:12:02,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:02,222 INFO L85 PathProgramCache]: Analyzing trace with hash 823131526, now seen corresponding path program 2 times [2022-11-20 11:12:02,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:02,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464628986] [2022-11-20 11:12:02,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:02,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:02,679 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:02,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:02,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464628986] [2022-11-20 11:12:02,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464628986] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:12:02,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716573464] [2022-11-20 11:12:02,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:12:02,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:02,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:02,682 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:02,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:12:02,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:12:02,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:12:02,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 11:12:02,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:03,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:03,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:03,328 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 21 [2022-11-20 11:12:03,433 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:03,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716573464] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:03,434 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:12:03,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-11-20 11:12:03,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757386562] [2022-11-20 11:12:03,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:03,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 11:12:03,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:03,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 11:12:03,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2022-11-20 11:12:03,437 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand has 26 states, 22 states have (on average 3.090909090909091) internal successors, (68), 20 states have internal predecessors, (68), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:04,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:04,167 INFO L93 Difference]: Finished difference Result 106 states and 113 transitions. [2022-11-20 11:12:04,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:12:04,167 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 3.090909090909091) internal successors, (68), 20 states have internal predecessors, (68), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 11:12:04,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:04,168 INFO L225 Difference]: With dead ends: 106 [2022-11-20 11:12:04,168 INFO L226 Difference]: Without dead ends: 106 [2022-11-20 11:12:04,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=135, Invalid=857, Unknown=0, NotChecked=0, Total=992 [2022-11-20 11:12:04,169 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 164 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:04,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 380 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:12:04,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-20 11:12:04,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2022-11-20 11:12:04,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 83 states have internal predecessors, (94), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 11:12:04,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2022-11-20 11:12:04,173 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 26 [2022-11-20 11:12:04,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:04,174 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2022-11-20 11:12:04,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 3.090909090909091) internal successors, (68), 20 states have internal predecessors, (68), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:04,174 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2022-11-20 11:12:04,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 11:12:04,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:04,180 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:04,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:04,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:04,386 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting insertionSortErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 11:12:04,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:04,386 INFO L85 PathProgramCache]: Analyzing trace with hash 101774635, now seen corresponding path program 1 times [2022-11-20 11:12:04,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:04,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893239047] [2022-11-20 11:12:04,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:04,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:04,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:12:04,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:04,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893239047] [2022-11-20 11:12:04,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893239047] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:12:04,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217953989] [2022-11-20 11:12:04,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:04,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:04,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:04,631 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:04,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:12:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:04,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:12:04,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:12:04,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:12:04,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217953989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:04,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:12:04,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2022-11-20 11:12:04,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471613975] [2022-11-20 11:12:04,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:04,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:12:04,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:04,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:12:04,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:12:04,885 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:05,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:05,139 INFO L93 Difference]: Finished difference Result 107 states and 124 transitions. [2022-11-20 11:12:05,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:12:05,140 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-20 11:12:05,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:05,141 INFO L225 Difference]: With dead ends: 107 [2022-11-20 11:12:05,141 INFO L226 Difference]: Without dead ends: 107 [2022-11-20 11:12:05,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:12:05,142 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 75 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:05,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 79 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:12:05,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-20 11:12:05,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 93. [2022-11-20 11:12:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 79 states have (on average 1.139240506329114) internal successors, (90), 82 states have internal predecessors, (90), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 11:12:05,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2022-11-20 11:12:05,147 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 30 [2022-11-20 11:12:05,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:05,148 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2022-11-20 11:12:05,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:05,148 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2022-11-20 11:12:05,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 11:12:05,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:05,149 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:05,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:05,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 11:12:05,350 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 11:12:05,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:05,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1896173366, now seen corresponding path program 1 times [2022-11-20 11:12:05,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:05,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964296150] [2022-11-20 11:12:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:05,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:05,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:12:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:05,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:12:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:05,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:12:05,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:05,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964296150] [2022-11-20 11:12:05,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964296150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:05,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:05,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:12:05,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019460309] [2022-11-20 11:12:05,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:05,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:12:05,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:05,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:12:05,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:12:05,445 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:12:05,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:05,486 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2022-11-20 11:12:05,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:12:05,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-11-20 11:12:05,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:05,488 INFO L225 Difference]: With dead ends: 117 [2022-11-20 11:12:05,489 INFO L226 Difference]: Without dead ends: 82 [2022-11-20 11:12:05,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:12:05,491 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 16 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:05,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 91 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:12:05,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-20 11:12:05,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 46. [2022-11-20 11:12:05,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 42 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2022-11-20 11:12:05,495 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 30 [2022-11-20 11:12:05,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:05,496 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2022-11-20 11:12:05,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:12:05,496 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2022-11-20 11:12:05,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 11:12:05,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:05,503 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:05,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:12:05,504 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting insertionSortErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 11:12:05,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:05,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1139947587, now seen corresponding path program 1 times [2022-11-20 11:12:05,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:05,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247289586] [2022-11-20 11:12:05,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:05,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:12:05,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:05,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247289586] [2022-11-20 11:12:05,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247289586] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:12:05,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241737443] [2022-11-20 11:12:05,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:05,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:05,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:05,652 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:05,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:12:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:05,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:12:05,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:05,777 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:12:05,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:05,868 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:12:05,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241737443] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:05,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:12:05,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-11-20 11:12:05,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016061105] [2022-11-20 11:12:05,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:05,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:12:05,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:05,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:12:05,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:12:05,870 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 11 states, 10 states have (on average 3.4) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:06,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:06,030 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2022-11-20 11:12:06,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:12:06,031 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-20 11:12:06,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:06,031 INFO L225 Difference]: With dead ends: 58 [2022-11-20 11:12:06,031 INFO L226 Difference]: Without dead ends: 58 [2022-11-20 11:12:06,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:12:06,032 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 107 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:06,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 123 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:12:06,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-20 11:12:06,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 48. [2022-11-20 11:12:06,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 44 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:06,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2022-11-20 11:12:06,035 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 31 [2022-11-20 11:12:06,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:06,035 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2022-11-20 11:12:06,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:06,035 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2022-11-20 11:12:06,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 11:12:06,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:06,036 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:06,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:06,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:06,242 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 11:12:06,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:06,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1146097344, now seen corresponding path program 1 times [2022-11-20 11:12:06,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:06,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379381572] [2022-11-20 11:12:06,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:06,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:06,544 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:06,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:06,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379381572] [2022-11-20 11:12:06,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379381572] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:12:06,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684936269] [2022-11-20 11:12:06,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:06,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:06,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:06,547 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:06,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:12:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:06,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 11:12:06,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:06,917 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:06,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:07,106 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:07,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684936269] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:07,106 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:12:07,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 25 [2022-11-20 11:12:07,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867634069] [2022-11-20 11:12:07,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:07,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 11:12:07,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:07,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 11:12:07,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:12:07,108 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 25 states, 20 states have (on average 3.55) internal successors, (71), 18 states have internal predecessors, (71), 5 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:07,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:07,333 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2022-11-20 11:12:07,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:12:07,334 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 3.55) internal successors, (71), 18 states have internal predecessors, (71), 5 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-11-20 11:12:07,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:07,334 INFO L225 Difference]: With dead ends: 89 [2022-11-20 11:12:07,334 INFO L226 Difference]: Without dead ends: 84 [2022-11-20 11:12:07,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 55 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2022-11-20 11:12:07,336 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 71 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:07,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 313 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:12:07,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-20 11:12:07,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2022-11-20 11:12:07,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 73 states have (on average 1.095890410958904) internal successors, (80), 74 states have internal predecessors, (80), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:07,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2022-11-20 11:12:07,338 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 38 [2022-11-20 11:12:07,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:07,342 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2022-11-20 11:12:07,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 3.55) internal successors, (71), 18 states have internal predecessors, (71), 5 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:07,342 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2022-11-20 11:12:07,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 11:12:07,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:07,347 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:07,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:07,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 11:12:07,554 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting insertionSortErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 11:12:07,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:07,554 INFO L85 PathProgramCache]: Analyzing trace with hash 131968688, now seen corresponding path program 1 times [2022-11-20 11:12:07,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:07,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380155833] [2022-11-20 11:12:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:07,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:08,006 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:12:08,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:08,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380155833] [2022-11-20 11:12:08,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380155833] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:12:08,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832332170] [2022-11-20 11:12:08,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:08,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:08,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:08,011 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:08,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:12:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:08,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 11:12:08,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:08,406 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:12:08,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:08,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-20 11:12:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:12:08,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832332170] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:08,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:12:08,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 24 [2022-11-20 11:12:08,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995848505] [2022-11-20 11:12:08,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:08,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 11:12:08,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:08,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 11:12:08,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:12:08,750 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand has 25 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 23 states have internal predecessors, (79), 4 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:09,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:09,711 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2022-11-20 11:12:09,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:12:09,712 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 23 states have internal predecessors, (79), 4 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-20 11:12:09,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:09,712 INFO L225 Difference]: With dead ends: 98 [2022-11-20 11:12:09,712 INFO L226 Difference]: Without dead ends: 63 [2022-11-20 11:12:09,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 63 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=383, Invalid=1257, Unknown=0, NotChecked=0, Total=1640 [2022-11-20 11:12:09,714 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 137 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:09,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 93 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:12:09,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-20 11:12:09,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 50. [2022-11-20 11:12:09,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 46 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:09,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2022-11-20 11:12:09,716 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 40 [2022-11-20 11:12:09,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:09,716 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2022-11-20 11:12:09,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 23 states have internal predecessors, (79), 4 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:09,716 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2022-11-20 11:12:09,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 11:12:09,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:09,718 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:09,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:09,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 11:12:09,924 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 11:12:09,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:09,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1405522077, now seen corresponding path program 2 times [2022-11-20 11:12:09,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:09,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539558333] [2022-11-20 11:12:09,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:09,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:10,492 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:10,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:10,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539558333] [2022-11-20 11:12:10,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539558333] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:12:10,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967898285] [2022-11-20 11:12:10,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:12:10,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:10,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:10,494 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:10,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:12:10,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:12:10,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:12:10,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-20 11:12:10,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:11,120 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:11,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:11,603 INFO L350 Elim1Store]: Elim1 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 25 treesize of output 21 [2022-11-20 11:12:11,762 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:11,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967898285] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:11,762 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:12:11,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2022-11-20 11:12:11,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504448594] [2022-11-20 11:12:11,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:11,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-20 11:12:11,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:11,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-20 11:12:11,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1273, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 11:12:11,764 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 38 states, 31 states have (on average 3.6451612903225805) internal successors, (113), 29 states have internal predecessors, (113), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:12,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:12,577 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2022-11-20 11:12:12,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:12:12,577 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 31 states have (on average 3.6451612903225805) internal successors, (113), 29 states have internal predecessors, (113), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-11-20 11:12:12,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:12,578 INFO L225 Difference]: With dead ends: 86 [2022-11-20 11:12:12,578 INFO L226 Difference]: Without dead ends: 86 [2022-11-20 11:12:12,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=217, Invalid=1853, Unknown=0, NotChecked=0, Total=2070 [2022-11-20 11:12:12,580 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 202 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:12,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 425 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:12:12,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-20 11:12:12,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 69. [2022-11-20 11:12:12,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.09375) internal successors, (70), 64 states have internal predecessors, (70), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:12,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2022-11-20 11:12:12,582 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 42 [2022-11-20 11:12:12,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:12,583 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2022-11-20 11:12:12,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 31 states have (on average 3.6451612903225805) internal successors, (113), 29 states have internal predecessors, (113), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:12,583 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2022-11-20 11:12:12,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 11:12:12,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:12,584 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:12,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:12,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:12,784 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 11:12:12,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:12,785 INFO L85 PathProgramCache]: Analyzing trace with hash 669489623, now seen corresponding path program 3 times [2022-11-20 11:12:12,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:12,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721678835] [2022-11-20 11:12:12,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:12,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:13,241 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 21 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:13,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:13,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721678835] [2022-11-20 11:12:13,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721678835] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:12:13,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643131293] [2022-11-20 11:12:13,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:12:13,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:13,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:13,244 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:13,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:12:13,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 11:12:13,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:12:13,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:12:13,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 36 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:12:13,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:14,126 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 39 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:12:14,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643131293] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:14,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:12:14,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 32 [2022-11-20 11:12:14,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694847725] [2022-11-20 11:12:14,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:14,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 11:12:14,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:14,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 11:12:14,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=863, Unknown=0, NotChecked=0, Total=992 [2022-11-20 11:12:14,129 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand has 32 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 25 states have internal predecessors, (88), 7 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:14,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:14,811 INFO L93 Difference]: Finished difference Result 127 states and 136 transitions. [2022-11-20 11:12:14,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 11:12:14,812 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 25 states have internal predecessors, (88), 7 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-20 11:12:14,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:14,812 INFO L225 Difference]: With dead ends: 127 [2022-11-20 11:12:14,812 INFO L226 Difference]: Without dead ends: 76 [2022-11-20 11:12:14,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 78 SyntacticMatches, 16 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=335, Invalid=1827, Unknown=0, NotChecked=0, Total=2162 [2022-11-20 11:12:14,814 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 143 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:14,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 347 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:12:14,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-20 11:12:14,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2022-11-20 11:12:14,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.088235294117647) internal successors, (74), 68 states have internal predecessors, (74), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:14,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2022-11-20 11:12:14,818 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 54 [2022-11-20 11:12:14,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:14,818 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2022-11-20 11:12:14,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 25 states have internal predecessors, (88), 7 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:14,818 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2022-11-20 11:12:14,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-20 11:12:14,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:14,819 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:14,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:15,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:15,031 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-11-20 11:12:15,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:15,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1567236300, now seen corresponding path program 4 times [2022-11-20 11:12:15,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:15,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423452344] [2022-11-20 11:12:15,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:15,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:15,888 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 8 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:12:15,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:15,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423452344] [2022-11-20 11:12:15,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423452344] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:12:15,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79419018] [2022-11-20 11:12:15,889 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:12:15,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:12:15,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:12:15,890 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:12:15,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:12:15,987 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:12:15,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:12:15,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-20 11:12:15,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:12:16,735 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 48 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:12:16,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:12:18,247 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 38 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:12:18,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79419018] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:12:18,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:12:18,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 49 [2022-11-20 11:12:18,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415037371] [2022-11-20 11:12:18,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:12:18,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-20 11:12:18,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:18,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-20 11:12:18,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2253, Unknown=0, NotChecked=0, Total=2450 [2022-11-20 11:12:18,250 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 50 states, 38 states have (on average 3.5526315789473686) internal successors, (135), 38 states have internal predecessors, (135), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:20,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:20,235 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2022-11-20 11:12:20,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 11:12:20,236 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 38 states have (on average 3.5526315789473686) internal successors, (135), 38 states have internal predecessors, (135), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-20 11:12:20,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:20,236 INFO L225 Difference]: With dead ends: 108 [2022-11-20 11:12:20,236 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 11:12:20,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=596, Invalid=4954, Unknown=0, NotChecked=0, Total=5550 [2022-11-20 11:12:20,241 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 560 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:20,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 729 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1232 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 11:12:20,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 11:12:20,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 11:12:20,242 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) [2022-11-20 11:12:20,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:12:20,242 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2022-11-20 11:12:20,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:20,243 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:12:20,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 38 states have (on average 3.5526315789473686) internal successors, (135), 38 states have internal predecessors, (135), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:12:20,244 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:12:20,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 11:12:20,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location insertionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 16 remaining) [2022-11-20 11:12:20,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location insertionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 16 remaining) [2022-11-20 11:12:20,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location insertionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 16 remaining) [2022-11-20 11:12:20,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location insertionSortErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 16 remaining) [2022-11-20 11:12:20,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location insertionSortErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 16 remaining) [2022-11-20 11:12:20,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location insertionSortErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 16 remaining) [2022-11-20 11:12:20,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location insertionSortErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 16 remaining) [2022-11-20 11:12:20,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location insertionSortErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 16 remaining) [2022-11-20 11:12:20,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location insertionSortErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 16 remaining) [2022-11-20 11:12:20,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location insertionSortErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 16 remaining) [2022-11-20 11:12:20,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 16 remaining) [2022-11-20 11:12:20,252 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 16 remaining) [2022-11-20 11:12:20,252 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (3 of 16 remaining) [2022-11-20 11:12:20,252 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (2 of 16 remaining) [2022-11-20 11:12:20,252 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (1 of 16 remaining) [2022-11-20 11:12:20,252 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 16 remaining) [2022-11-20 11:12:20,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:12:20,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-20 11:12:20,462 INFO L444 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:12:20,465 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:12:20,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:12:20 BoogieIcfgContainer [2022-11-20 11:12:20,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:12:20,471 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:12:20,471 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:12:20,471 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:12:20,471 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:11:55" (3/4) ... [2022-11-20 11:12:20,477 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:12:20,483 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure insertionSort [2022-11-20 11:12:20,490 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-20 11:12:20,490 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-20 11:12:20,490 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:12:20,490 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:12:20,539 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:12:20,540 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:12:20,540 INFO L158 Benchmark]: Toolchain (without parser) took 25869.15ms. Allocated memory was 148.9MB in the beginning and 262.1MB in the end (delta: 113.2MB). Free memory was 119.6MB in the beginning and 221.8MB in the end (delta: -102.2MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2022-11-20 11:12:20,540 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:12:20,541 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.78ms. Allocated memory is still 148.9MB. Free memory was 119.0MB in the beginning and 109.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:12:20,541 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.80ms. Allocated memory is still 148.9MB. Free memory was 109.2MB in the beginning and 107.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:12:20,542 INFO L158 Benchmark]: Boogie Preprocessor took 26.67ms. Allocated memory is still 148.9MB. Free memory was 107.7MB in the beginning and 106.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:12:20,542 INFO L158 Benchmark]: RCFGBuilder took 589.68ms. Allocated memory is still 148.9MB. Free memory was 106.5MB in the beginning and 93.0MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 11:12:20,545 INFO L158 Benchmark]: TraceAbstraction took 24924.42ms. Allocated memory was 148.9MB in the beginning and 262.1MB in the end (delta: 113.2MB). Free memory was 92.4MB in the beginning and 224.6MB in the end (delta: -132.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:12:20,546 INFO L158 Benchmark]: Witness Printer took 69.08ms. Allocated memory is still 262.1MB. Free memory was 224.6MB in the beginning and 221.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:12:20,549 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.78ms. Allocated memory is still 148.9MB. Free memory was 119.0MB in the beginning and 109.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.80ms. Allocated memory is still 148.9MB. Free memory was 109.2MB in the beginning and 107.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.67ms. Allocated memory is still 148.9MB. Free memory was 107.7MB in the beginning and 106.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 589.68ms. Allocated memory is still 148.9MB. Free memory was 106.5MB in the beginning and 93.0MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 24924.42ms. Allocated memory was 148.9MB in the beginning and 262.1MB in the end (delta: 113.2MB). Free memory was 92.4MB in the beginning and 224.6MB in the end (delta: -132.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 69.08ms. Allocated memory is still 262.1MB. Free memory was 224.6MB in the beginning and 221.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 39]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 39]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 39]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 23]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 49 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 24.8s, OverallIterations: 21, TraceHistogramMax: 4, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.1s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1898 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1886 mSDsluCounter, 4115 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3443 mSDsCounter, 201 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4947 IncrementalHoareTripleChecker+Invalid, 5148 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 201 mSolverCounterUnsat, 672 mSDtfsCounter, 4947 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 972 GetRequests, 535 SyntacticMatches, 43 SemanticMatches, 394 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3058 ImplicationChecksByTransitivity, 8.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=13, InterpolantAutomatonStates: 215, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 182 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 12.8s InterpolantComputationTime, 870 NumberOfCodeBlocks, 864 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 1159 ConstructedInterpolants, 0 QuantifiedInterpolants, 9866 SizeOfPredicates, 94 NumberOfNonLiveVariables, 1645 ConjunctsInSsa, 252 ConjunctsInUnsatCore, 43 InterpolantComputations, 12 PerfectInterpolantSequences, 378/719 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 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 11:12:20,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a6db8bf-2ffb-4e1d-85a5-77e5628752bd/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE