./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-dietlibc/strchr-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 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_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-dietlibc/strchr-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a --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 c72d4b54465b49a8be7d6b67decf7d9407d163e58bb229fc2ca0587a37abb515 --- 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-b5237d8 [2022-11-21 16:45:03,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:45:03,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:45:03,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:45:03,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:45:03,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:45:03,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:45:03,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:45:03,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:45:03,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:45:03,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:45:03,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:45:03,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:45:03,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:45:03,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:45:03,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:45:03,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:45:03,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:45:03,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:45:03,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:45:03,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:45:03,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:45:03,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:45:03,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:45:03,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:45:03,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:45:03,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:45:03,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:45:03,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:45:04,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:45:04,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:45:04,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:45:04,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:45:04,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:45:04,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:45:04,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:45:04,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:45:04,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:45:04,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:45:04,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:45:04,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:45:04,024 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2022-11-21 16:45:04,070 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:45:04,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:45:04,071 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:45:04,071 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:45:04,072 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:45:04,072 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:45:04,073 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:45:04,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:45:04,074 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:45:04,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:45:04,076 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:45:04,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:45:04,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:45:04,076 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 16:45:04,076 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 16:45:04,077 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 16:45:04,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:45:04,077 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 16:45:04,077 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:45:04,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:45:04,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:45:04,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:45:04,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:45:04,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:45:04,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:45:04,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:45:04,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:45:04,083 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_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c72d4b54465b49a8be7d6b67decf7d9407d163e58bb229fc2ca0587a37abb515 [2022-11-21 16:45:04,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:45:04,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:45:04,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:45:04,453 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:45:04,454 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:45:04,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/termination-dietlibc/strchr-1.i [2022-11-21 16:45:07,663 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:45:07,962 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:45:07,963 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/sv-benchmarks/c/termination-dietlibc/strchr-1.i [2022-11-21 16:45:07,976 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/data/ffadf2030/bc010b72b7054da4a6f852c8ec548e6d/FLAGb9cf8962c [2022-11-21 16:45:08,006 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/data/ffadf2030/bc010b72b7054da4a6f852c8ec548e6d [2022-11-21 16:45:08,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:45:08,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:45:08,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:45:08,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:45:08,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:45:08,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:45:08" (1/1) ... [2022-11-21 16:45:08,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@391d41a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:08, skipping insertion in model container [2022-11-21 16:45:08,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:45:08" (1/1) ... [2022-11-21 16:45:08,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:45:08,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:45:08,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:45:08,493 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:45:08,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:45:08,592 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:45:08,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:08 WrapperNode [2022-11-21 16:45:08,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:45:08,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:45:08,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:45:08,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:45:08,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:08" (1/1) ... [2022-11-21 16:45:08,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:08" (1/1) ... [2022-11-21 16:45:08,675 INFO L138 Inliner]: procedures = 113, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 91 [2022-11-21 16:45:08,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:45:08,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:45:08,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:45:08,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:45:08,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:08" (1/1) ... [2022-11-21 16:45:08,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:08" (1/1) ... [2022-11-21 16:45:08,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:08" (1/1) ... [2022-11-21 16:45:08,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:08" (1/1) ... [2022-11-21 16:45:08,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:08" (1/1) ... [2022-11-21 16:45:08,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:08" (1/1) ... [2022-11-21 16:45:08,719 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:08" (1/1) ... [2022-11-21 16:45:08,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:08" (1/1) ... [2022-11-21 16:45:08,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:45:08,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:45:08,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:45:08,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:45:08,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:08" (1/1) ... [2022-11-21 16:45:08,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:45:08,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:45:08,775 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:45:08,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:45:08,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:45:08,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:45:08,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:45:08,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:45:08,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:45:08,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:45:08,923 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:45:08,926 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:45:09,241 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:45:09,248 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:45:09,248 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 16:45:09,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:45:09 BoogieIcfgContainer [2022-11-21 16:45:09,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:45:09,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:45:09,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:45:09,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:45:09,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:45:08" (1/3) ... [2022-11-21 16:45:09,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b57444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:45:09, skipping insertion in model container [2022-11-21 16:45:09,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:45:08" (2/3) ... [2022-11-21 16:45:09,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b57444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:45:09, skipping insertion in model container [2022-11-21 16:45:09,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:45:09" (3/3) ... [2022-11-21 16:45:09,267 INFO L112 eAbstractionObserver]: Analyzing ICFG strchr-1.i [2022-11-21 16:45:09,291 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:45:09,292 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2022-11-21 16:45:09,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:45:09,358 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;@3c5e0535, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:45:09,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-21 16:45:09,364 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 45 states have internal predecessors, (56), 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) [2022-11-21 16:45:09,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-21 16:45:09,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:09,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-21 16:45:09,374 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-21 16:45:09,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:09,381 INFO L85 PathProgramCache]: Analyzing trace with hash 925690, now seen corresponding path program 1 times [2022-11-21 16:45:09,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:09,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670923901] [2022-11-21 16:45:09,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:09,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:09,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:09,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:09,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670923901] [2022-11-21 16:45:09,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670923901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:09,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:09,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:45:09,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543118323] [2022-11-21 16:45:09,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:09,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:45:09,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:09,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:45:09,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:45:09,698 INFO L87 Difference]: Start difference. First operand has 46 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 45 states have internal predecessors, (56), 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) 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) [2022-11-21 16:45:09,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:09,800 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2022-11-21 16:45:09,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:45:09,803 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 [2022-11-21 16:45:09,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:09,817 INFO L225 Difference]: With dead ends: 47 [2022-11-21 16:45:09,817 INFO L226 Difference]: Without dead ends: 44 [2022-11-21 16:45:09,819 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 [2022-11-21 16:45:09,828 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 2 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:09,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 80 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:45:09,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-21 16:45:09,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-21 16:45:09,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 25 states have (on average 2.04) internal successors, (51), 43 states have internal predecessors, (51), 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) [2022-11-21 16:45:09,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2022-11-21 16:45:09,879 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 4 [2022-11-21 16:45:09,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:09,880 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2022-11-21 16:45:09,880 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) [2022-11-21 16:45:09,880 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2022-11-21 16:45:09,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-21 16:45:09,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:09,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-21 16:45:09,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:45:09,882 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-21 16:45:09,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:09,883 INFO L85 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2022-11-21 16:45:09,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:09,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688453548] [2022-11-21 16:45:09,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:09,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:10,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:10,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:10,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688453548] [2022-11-21 16:45:10,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688453548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:10,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:10,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:45:10,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236620598] [2022-11-21 16:45:10,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:10,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:45:10,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:10,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:45:10,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:45:10,071 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. 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) [2022-11-21 16:45:10,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:10,151 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2022-11-21 16:45:10,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:45:10,152 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 [2022-11-21 16:45:10,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:10,158 INFO L225 Difference]: With dead ends: 43 [2022-11-21 16:45:10,159 INFO L226 Difference]: Without dead ends: 43 [2022-11-21 16:45:10,159 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 [2022-11-21 16:45:10,160 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 45 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:10,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 30 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:45:10,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-21 16:45:10,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-21 16:45:10,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 25 states have (on average 2.0) internal successors, (50), 42 states have internal predecessors, (50), 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) [2022-11-21 16:45:10,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2022-11-21 16:45:10,167 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 4 [2022-11-21 16:45:10,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:10,167 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2022-11-21 16:45:10,168 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) [2022-11-21 16:45:10,168 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2022-11-21 16:45:10,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-21 16:45:10,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:10,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-21 16:45:10,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:45:10,169 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-21 16:45:10,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:10,170 INFO L85 PathProgramCache]: Analyzing trace with hash 925670, now seen corresponding path program 1 times [2022-11-21 16:45:10,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:10,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92752702] [2022-11-21 16:45:10,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:10,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:10,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:10,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92752702] [2022-11-21 16:45:10,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92752702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:10,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:10,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:45:10,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843924894] [2022-11-21 16:45:10,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:10,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:45:10,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:10,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:45:10,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:45:10,392 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2022-11-21 16:45:10,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:10,483 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2022-11-21 16:45:10,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:45:10,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 [2022-11-21 16:45:10,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:10,487 INFO L225 Difference]: With dead ends: 42 [2022-11-21 16:45:10,488 INFO L226 Difference]: Without dead ends: 42 [2022-11-21 16:45:10,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:45:10,498 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 47 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:10,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 32 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:45:10,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-21 16:45:10,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-11-21 16:45:10,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 25 states have (on average 1.96) internal successors, (49), 41 states have internal predecessors, (49), 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) [2022-11-21 16:45:10,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2022-11-21 16:45:10,512 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 4 [2022-11-21 16:45:10,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:10,513 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2022-11-21 16:45:10,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2022-11-21 16:45:10,515 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-11-21 16:45:10,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 16:45:10,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:10,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:10,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:45:10,517 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-21 16:45:10,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:10,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1806782793, now seen corresponding path program 1 times [2022-11-21 16:45:10,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:10,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275515790] [2022-11-21 16:45:10,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:10,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:10,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:10,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:10,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275515790] [2022-11-21 16:45:10,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275515790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:10,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:10,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:45:10,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987337096] [2022-11-21 16:45:10,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:10,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:45:10,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:10,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:45:10,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:45:10,644 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-11-21 16:45:10,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:10,720 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2022-11-21 16:45:10,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:45:10,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-11-21 16:45:10,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:10,722 INFO L225 Difference]: With dead ends: 34 [2022-11-21 16:45:10,722 INFO L226 Difference]: Without dead ends: 34 [2022-11-21 16:45:10,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:45:10,724 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 64 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:10,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 17 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:45:10,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-21 16:45:10,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-21 16:45:10,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.64) internal successors, (41), 33 states have internal predecessors, (41), 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) [2022-11-21 16:45:10,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2022-11-21 16:45:10,729 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 7 [2022-11-21 16:45:10,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:10,730 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-11-21 16:45:10,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-11-21 16:45:10,730 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-11-21 16:45:10,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 16:45:10,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:10,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:10,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:45:10,732 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-21 16:45:10,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:10,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1806782794, now seen corresponding path program 1 times [2022-11-21 16:45:10,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:10,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81528667] [2022-11-21 16:45:10,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:10,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:10,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:10,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81528667] [2022-11-21 16:45:10,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81528667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:10,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:10,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:45:10,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220126219] [2022-11-21 16:45:10,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:10,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:45:10,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:10,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:45:10,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:45:10,929 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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) [2022-11-21 16:45:11,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:11,045 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2022-11-21 16:45:11,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:45:11,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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 7 [2022-11-21 16:45:11,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:11,047 INFO L225 Difference]: With dead ends: 43 [2022-11-21 16:45:11,048 INFO L226 Difference]: Without dead ends: 43 [2022-11-21 16:45:11,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:45:11,050 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 103 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:11,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 40 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:45:11,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-21 16:45:11,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2022-11-21 16:45:11,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 37 states have internal predecessors, (46), 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) [2022-11-21 16:45:11,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-11-21 16:45:11,068 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 7 [2022-11-21 16:45:11,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:11,069 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-11-21 16:45:11,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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) [2022-11-21 16:45:11,070 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-11-21 16:45:11,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 16:45:11,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:11,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:11,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:45:11,072 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-21 16:45:11,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:11,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1532747735, now seen corresponding path program 1 times [2022-11-21 16:45:11,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:11,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154991537] [2022-11-21 16:45:11,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:11,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:11,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:11,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:11,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154991537] [2022-11-21 16:45:11,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154991537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:11,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:11,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:45:11,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656497953] [2022-11-21 16:45:11,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:11,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:45:11,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:11,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:45:11,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:45:11,239 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-21 16:45:11,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:11,272 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2022-11-21 16:45:11,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:45:11,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2022-11-21 16:45:11,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:11,274 INFO L225 Difference]: With dead ends: 37 [2022-11-21 16:45:11,274 INFO L226 Difference]: Without dead ends: 34 [2022-11-21 16:45:11,274 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 [2022-11-21 16:45:11,275 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 30 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:11,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 56 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:45:11,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-21 16:45:11,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-21 16:45:11,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 33 states have internal predecessors, (34), 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) [2022-11-21 16:45:11,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2022-11-21 16:45:11,280 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 11 [2022-11-21 16:45:11,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:11,280 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2022-11-21 16:45:11,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-21 16:45:11,281 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2022-11-21 16:45:11,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 16:45:11,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:11,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:11,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:45:11,282 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-21 16:45:11,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:11,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1532747572, now seen corresponding path program 1 times [2022-11-21 16:45:11,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:11,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15216569] [2022-11-21 16:45:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:11,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:11,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:11,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:11,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15216569] [2022-11-21 16:45:11,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15216569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:11,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:11,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:45:11,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551651230] [2022-11-21 16:45:11,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:11,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:45:11,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:11,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:45:11,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:45:11,783 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 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) [2022-11-21 16:45:12,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:12,056 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2022-11-21 16:45:12,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:45:12,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 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 11 [2022-11-21 16:45:12,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:12,059 INFO L225 Difference]: With dead ends: 39 [2022-11-21 16:45:12,060 INFO L226 Difference]: Without dead ends: 39 [2022-11-21 16:45:12,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:45:12,063 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 75 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:12,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 33 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:45:12,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-21 16:45:12,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2022-11-21 16:45:12,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 37 states have internal predecessors, (38), 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) [2022-11-21 16:45:12,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2022-11-21 16:45:12,072 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 11 [2022-11-21 16:45:12,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:12,073 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2022-11-21 16:45:12,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 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) [2022-11-21 16:45:12,073 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2022-11-21 16:45:12,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 16:45:12,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:12,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:12,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:45:12,075 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-21 16:45:12,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:12,076 INFO L85 PathProgramCache]: Analyzing trace with hash -2134449330, now seen corresponding path program 1 times [2022-11-21 16:45:12,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:12,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169853025] [2022-11-21 16:45:12,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:12,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:12,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:12,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:12,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169853025] [2022-11-21 16:45:12,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169853025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:12,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:12,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:45:12,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58322753] [2022-11-21 16:45:12,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:12,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:45:12,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:12,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:45:12,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:45:12,792 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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) [2022-11-21 16:45:13,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:13,240 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2022-11-21 16:45:13,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:45:13,241 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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 15 [2022-11-21 16:45:13,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:13,241 INFO L225 Difference]: With dead ends: 43 [2022-11-21 16:45:13,242 INFO L226 Difference]: Without dead ends: 43 [2022-11-21 16:45:13,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-11-21 16:45:13,243 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 89 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:13,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 37 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:45:13,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-21 16:45:13,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2022-11-21 16:45:13,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 41 states have internal predecessors, (42), 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) [2022-11-21 16:45:13,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2022-11-21 16:45:13,247 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 15 [2022-11-21 16:45:13,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:13,247 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2022-11-21 16:45:13,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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) [2022-11-21 16:45:13,248 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2022-11-21 16:45:13,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-21 16:45:13,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:13,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:13,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:45:13,249 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-21 16:45:13,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:13,249 INFO L85 PathProgramCache]: Analyzing trace with hash 820517072, now seen corresponding path program 1 times [2022-11-21 16:45:13,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:13,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154731585] [2022-11-21 16:45:13,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:13,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:13,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:13,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:13,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154731585] [2022-11-21 16:45:13,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154731585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:45:13,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:45:13,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:45:13,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466671333] [2022-11-21 16:45:13,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:45:13,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:45:13,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:13,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:45:13,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:45:13,912 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 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) [2022-11-21 16:45:14,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:14,450 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2022-11-21 16:45:14,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:45:14,451 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 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 19 [2022-11-21 16:45:14,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:14,452 INFO L225 Difference]: With dead ends: 47 [2022-11-21 16:45:14,452 INFO L226 Difference]: Without dead ends: 47 [2022-11-21 16:45:14,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-11-21 16:45:14,453 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 94 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:14,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 45 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:45:14,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-21 16:45:14,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2022-11-21 16:45:14,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 45 states have internal predecessors, (46), 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) [2022-11-21 16:45:14,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2022-11-21 16:45:14,457 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 19 [2022-11-21 16:45:14,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:14,457 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2022-11-21 16:45:14,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 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) [2022-11-21 16:45:14,457 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2022-11-21 16:45:14,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-21 16:45:14,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:14,458 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:14,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:45:14,459 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-21 16:45:14,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:14,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2016534759, now seen corresponding path program 1 times [2022-11-21 16:45:14,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:14,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793175406] [2022-11-21 16:45:14,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:14,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:15,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:15,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:15,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793175406] [2022-11-21 16:45:15,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793175406] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:45:15,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629531648] [2022-11-21 16:45:15,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:15,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:45:15,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:45:15,273 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:45:15,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:45:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:15,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-21 16:45:15,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:45:15,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-21 16:45:16,892 INFO L321 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2022-11-21 16:45:16,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 51 [2022-11-21 16:45:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:16,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:45:17,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2022-11-21 16:45:17,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 77 [2022-11-21 16:45:17,969 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 35 treesize of output 27 [2022-11-21 16:45:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:17,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629531648] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:45:17,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:45:17,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 32 [2022-11-21 16:45:17,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815947262] [2022-11-21 16:45:17,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:45:17,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-21 16:45:17,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:17,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-21 16:45:17,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=917, Unknown=0, NotChecked=0, Total=1056 [2022-11-21 16:45:17,999 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 33 states, 32 states have (on average 2.03125) internal successors, (65), 33 states have internal predecessors, (65), 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) [2022-11-21 16:45:20,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:20,117 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2022-11-21 16:45:20,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:45:20,118 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.03125) internal successors, (65), 33 states have internal predecessors, (65), 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 24 [2022-11-21 16:45:20,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:20,119 INFO L225 Difference]: With dead ends: 48 [2022-11-21 16:45:20,119 INFO L226 Difference]: Without dead ends: 48 [2022-11-21 16:45:20,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=352, Invalid=1628, Unknown=0, NotChecked=0, Total=1980 [2022-11-21 16:45:20,121 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 314 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:20,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 144 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 16:45:20,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-21 16:45:20,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2022-11-21 16:45:20,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 44 states have internal predecessors, (45), 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) [2022-11-21 16:45:20,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2022-11-21 16:45:20,124 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 24 [2022-11-21 16:45:20,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:20,124 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2022-11-21 16:45:20,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.03125) internal successors, (65), 33 states have internal predecessors, (65), 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) [2022-11-21 16:45:20,124 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2022-11-21 16:45:20,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-21 16:45:20,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:45:20,125 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:20,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:45:20,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 16:45:20,326 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2022-11-21 16:45:20,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:45:20,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1491704297, now seen corresponding path program 1 times [2022-11-21 16:45:20,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:45:20,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672488034] [2022-11-21 16:45:20,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:20,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:45:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:21,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:21,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:45:21,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672488034] [2022-11-21 16:45:21,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672488034] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:45:21,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509343854] [2022-11-21 16:45:21,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:45:21,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:45:21,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:45:21,099 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:45:21,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:45:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:45:21,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-21 16:45:21,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:45:21,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-21 16:45:22,801 INFO L321 Elim1Store]: treesize reduction 16, result has 71.4 percent of original size [2022-11-21 16:45:22,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 58 treesize of output 62 [2022-11-21 16:45:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:22,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:45:24,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 64 [2022-11-21 16:45:24,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 96 [2022-11-21 16:45:24,119 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 35 treesize of output 27 [2022-11-21 16:45:24,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:45:24,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509343854] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:45:24,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:45:24,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 15] total 37 [2022-11-21 16:45:24,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480289993] [2022-11-21 16:45:24,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:45:24,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-21 16:45:24,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:45:24,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-21 16:45:24,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1224, Unknown=0, NotChecked=0, Total=1406 [2022-11-21 16:45:24,162 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 38 states, 37 states have (on average 2.108108108108108) internal successors, (78), 38 states have internal predecessors, (78), 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) [2022-11-21 16:45:27,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:45:27,713 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2022-11-21 16:45:27,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 16:45:27,714 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.108108108108108) internal successors, (78), 38 states have internal predecessors, (78), 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 28 [2022-11-21 16:45:27,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:45:27,714 INFO L225 Difference]: With dead ends: 44 [2022-11-21 16:45:27,715 INFO L226 Difference]: Without dead ends: 0 [2022-11-21 16:45:27,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=571, Invalid=2399, Unknown=0, NotChecked=0, Total=2970 [2022-11-21 16:45:27,717 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 332 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:45:27,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 214 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 16:45:27,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-21 16:45:27,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-21 16:45:27,718 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) [2022-11-21 16:45:27,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-21 16:45:27,718 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2022-11-21 16:45:27,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:45:27,719 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 16:45:27,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.108108108108108) internal successors, (78), 38 states have internal predecessors, (78), 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) [2022-11-21 16:45:27,719 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-21 16:45:27,719 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-21 16:45:27,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 19 remaining) [2022-11-21 16:45:27,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 19 remaining) [2022-11-21 16:45:27,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 19 remaining) [2022-11-21 16:45:27,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 19 remaining) [2022-11-21 16:45:27,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 19 remaining) [2022-11-21 16:45:27,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 19 remaining) [2022-11-21 16:45:27,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 19 remaining) [2022-11-21 16:45:27,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 19 remaining) [2022-11-21 16:45:27,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 19 remaining) [2022-11-21 16:45:27,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 19 remaining) [2022-11-21 16:45:27,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 19 remaining) [2022-11-21 16:45:27,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 19 remaining) [2022-11-21 16:45:27,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 19 remaining) [2022-11-21 16:45:27,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 19 remaining) [2022-11-21 16:45:27,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 19 remaining) [2022-11-21 16:45:27,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 19 remaining) [2022-11-21 16:45:27,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 19 remaining) [2022-11-21 16:45:27,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 19 remaining) [2022-11-21 16:45:27,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK (0 of 19 remaining) [2022-11-21 16:45:27,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:45:27,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 16:45:27,934 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:45:27,936 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 16:45:27,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 04:45:27 BoogieIcfgContainer [2022-11-21 16:45:27,939 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 16:45:27,940 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 16:45:27,940 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 16:45:27,940 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 16:45:27,940 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:45:09" (3/4) ... [2022-11-21 16:45:27,943 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 16:45:27,953 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-21 16:45:27,953 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-21 16:45:27,953 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 16:45:27,954 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 16:45:28,017 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 16:45:28,017 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 16:45:28,018 INFO L158 Benchmark]: Toolchain (without parser) took 20008.05ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 113.6MB in the beginning and 145.8MB in the end (delta: -32.3MB). Peak memory consumption was 101.0MB. Max. memory is 16.1GB. [2022-11-21 16:45:28,018 INFO L158 Benchmark]: CDTParser took 0.62ms. Allocated memory is still 119.5MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:45:28,019 INFO L158 Benchmark]: CACSL2BoogieTranslator took 582.98ms. Allocated memory is still 146.8MB. Free memory was 113.5MB in the beginning and 110.6MB in the end (delta: 2.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 16:45:28,019 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.13ms. Allocated memory is still 146.8MB. Free memory was 110.6MB in the beginning and 108.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:45:28,019 INFO L158 Benchmark]: Boogie Preprocessor took 45.40ms. Allocated memory is still 146.8MB. Free memory was 108.5MB in the beginning and 107.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:45:28,019 INFO L158 Benchmark]: RCFGBuilder took 525.64ms. Allocated memory is still 146.8MB. Free memory was 107.1MB in the beginning and 92.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-21 16:45:28,020 INFO L158 Benchmark]: TraceAbstraction took 18686.36ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 91.8MB in the beginning and 46.6MB in the end (delta: 45.1MB). Peak memory consumption was 77.2MB. Max. memory is 16.1GB. [2022-11-21 16:45:28,020 INFO L158 Benchmark]: Witness Printer took 77.85ms. Allocated memory is still 176.2MB. Free memory was 46.6MB in the beginning and 145.8MB in the end (delta: -99.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 16:45:28,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62ms. Allocated memory is still 119.5MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 582.98ms. Allocated memory is still 146.8MB. Free memory was 113.5MB in the beginning and 110.6MB in the end (delta: 2.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.13ms. Allocated memory is still 146.8MB. Free memory was 110.6MB in the beginning and 108.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.40ms. Allocated memory is still 146.8MB. Free memory was 108.5MB in the beginning and 107.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 525.64ms. Allocated memory is still 146.8MB. Free memory was 107.1MB in the beginning and 92.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 18686.36ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 91.8MB in the beginning and 46.6MB in the end (delta: 45.1MB). Peak memory consumption was 77.2MB. Max. memory is 16.1GB. * Witness Printer took 77.85ms. Allocated memory is still 176.2MB. Free memory was 46.6MB in the beginning and 145.8MB in the end (delta: -99.2MB). Peak memory consumption was 4.2MB. 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: -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: 517]: 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 1 procedures, 46 locations, 19 error locations. Started 1 CEGAR loops. OverallTime: 18.6s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1195 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1195 mSDsluCounter, 728 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 497 mSDsCounter, 104 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1289 IncrementalHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 104 mSolverCounterUnsat, 231 mSDtfsCounter, 1289 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 213 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, InterpolantAutomatonStates: 83, 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, 11 MinimizatonAttempts, 11 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 223 ConstructedInterpolants, 41 QuantifiedInterpolants, 5377 SizeOfPredicates, 22 NumberOfNonLiveVariables, 278 ConjunctsInSsa, 99 ConjunctsInUnsatCore, 15 InterpolantComputations, 9 PerfectInterpolantSequences, 4/24 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 19 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-21 16:45:28,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c883d40f-e2b5-4d35-b7cc-e4aac67387fd/bin/uautomizer-vX5HgA9Q3a/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