./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-dietlibc/strcpy_small.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-dietlibc/strcpy_small.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8 --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 ac582ab464abffec628fd39914d1e8ed3c994a881b722675333d088c8e0918eb --- 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-e04fb08 [2022-11-16 12:14:07,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:14:07,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:14:07,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:14:07,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:14:07,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:14:07,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:14:07,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:14:07,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:14:07,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:14:07,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:14:07,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:14:07,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:14:07,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:14:07,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:14:07,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:14:07,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:14:07,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:14:07,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:14:07,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:14:07,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:14:07,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:14:07,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:14:07,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:14:07,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:14:07,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:14:07,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:14:07,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:14:07,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:14:07,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:14:07,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:14:07,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:14:07,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:14:07,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:14:07,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:14:07,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:14:07,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:14:07,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:14:07,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:14:07,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:14:07,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:14:07,919 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2022-11-16 12:14:07,947 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:14:07,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:14:07,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:14:07,948 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:14:07,949 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:14:07,949 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:14:07,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:14:07,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:14:07,950 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:14:07,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:14:07,951 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:14:07,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:14:07,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:14:07,952 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:14:07,952 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:14:07,952 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:14:07,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:14:07,953 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:14:07,953 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:14:07,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:14:07,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:14:07,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:14:07,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:14:07,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:14:07,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:14:07,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:14:07,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:14:07,955 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_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac582ab464abffec628fd39914d1e8ed3c994a881b722675333d088c8e0918eb [2022-11-16 12:14:08,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:14:08,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:14:08,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:14:08,340 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:14:08,341 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:14:08,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/termination-dietlibc/strcpy_small.i [2022-11-16 12:14:08,453 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/data/e30530edc/b35fae3e7bea48579332b98e94805546/FLAGe24db3501 [2022-11-16 12:14:09,170 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:14:09,171 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/sv-benchmarks/c/termination-dietlibc/strcpy_small.i [2022-11-16 12:14:09,186 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/data/e30530edc/b35fae3e7bea48579332b98e94805546/FLAGe24db3501 [2022-11-16 12:14:09,431 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/data/e30530edc/b35fae3e7bea48579332b98e94805546 [2022-11-16 12:14:09,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:14:09,440 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:14:09,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:14:09,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:14:09,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:14:09,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:14:09" (1/1) ... [2022-11-16 12:14:09,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b7a3cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:09, skipping insertion in model container [2022-11-16 12:14:09,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:14:09" (1/1) ... [2022-11-16 12:14:09,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:14:09,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:14:09,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:14:09,914 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:14:09,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:14:10,008 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:14:10,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:10 WrapperNode [2022-11-16 12:14:10,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:14:10,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:14:10,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:14:10,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:14:10,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:10" (1/1) ... [2022-11-16 12:14:10,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:10" (1/1) ... [2022-11-16 12:14:10,097 INFO L138 Inliner]: procedures = 113, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2022-11-16 12:14:10,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:14:10,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:14:10,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:14:10,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:14:10,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:10" (1/1) ... [2022-11-16 12:14:10,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:10" (1/1) ... [2022-11-16 12:14:10,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:10" (1/1) ... [2022-11-16 12:14:10,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:10" (1/1) ... [2022-11-16 12:14:10,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:10" (1/1) ... [2022-11-16 12:14:10,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:10" (1/1) ... [2022-11-16 12:14:10,154 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:10" (1/1) ... [2022-11-16 12:14:10,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:10" (1/1) ... [2022-11-16 12:14:10,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:14:10,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:14:10,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:14:10,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:14:10,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:10" (1/1) ... [2022-11-16 12:14:10,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:14:10,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:10,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:14:10,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:14:10,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:14:10,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:14:10,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:14:10,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:14:10,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:14:10,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:14:10,408 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:14:10,410 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:14:10,657 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:14:10,664 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:14:10,665 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:14:10,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:14:10 BoogieIcfgContainer [2022-11-16 12:14:10,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:14:10,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:14:10,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:14:10,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:14:10,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:14:09" (1/3) ... [2022-11-16 12:14:10,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47effb17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:14:10, skipping insertion in model container [2022-11-16 12:14:10,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:10" (2/3) ... [2022-11-16 12:14:10,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47effb17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:14:10, skipping insertion in model container [2022-11-16 12:14:10,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:14:10" (3/3) ... [2022-11-16 12:14:10,681 INFO L112 eAbstractionObserver]: Analyzing ICFG strcpy_small.i [2022-11-16 12:14:10,705 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:14:10,718 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-16 12:14:10,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:14:10,834 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;@3540dba4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:14:10,840 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-16 12:14:10,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:10,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 12:14:10,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:10,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 12:14:10,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:14:10,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:10,873 INFO L85 PathProgramCache]: Analyzing trace with hash 925638, now seen corresponding path program 1 times [2022-11-16 12:14:10,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:10,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266387133] [2022-11-16 12:14:10,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:10,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:11,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:11,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:11,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266387133] [2022-11-16 12:14:11,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266387133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:11,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:11,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:14:11,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811266839] [2022-11-16 12:14:11,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:11,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:14:11,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:11,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:14:11,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:14:11,176 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2022-11-16 12:14:11,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:11,250 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-11-16 12:14:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:14:11,253 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 [2022-11-16 12:14:11,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:11,263 INFO L225 Difference]: With dead ends: 23 [2022-11-16 12:14:11,264 INFO L226 Difference]: Without dead ends: 20 [2022-11-16 12:14:11,268 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 [2022-11-16 12:14:11,273 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:11,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 30 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:14:11,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-16 12:14:11,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-16 12:14:11,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 19 states have internal predecessors, (21), 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) [2022-11-16 12:14:11,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-11-16 12:14:11,318 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 4 [2022-11-16 12:14:11,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:11,319 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-11-16 12:14:11,319 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) [2022-11-16 12:14:11,320 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-11-16 12:14:11,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 12:14:11,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:11,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 12:14:11,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:14:11,323 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:14:11,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:11,325 INFO L85 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2022-11-16 12:14:11,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:11,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260804333] [2022-11-16 12:14:11,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:11,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:11,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:11,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:11,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260804333] [2022-11-16 12:14:11,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260804333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:11,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:11,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:14:11,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145165941] [2022-11-16 12:14:11,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:11,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:14:11,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:11,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:14:11,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:14:11,509 INFO L87 Difference]: Start difference. First operand 20 states and 21 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) [2022-11-16 12:14:11,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:11,541 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-16 12:14:11,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:14:11,542 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 [2022-11-16 12:14:11,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:11,543 INFO L225 Difference]: With dead ends: 19 [2022-11-16 12:14:11,543 INFO L226 Difference]: Without dead ends: 19 [2022-11-16 12:14:11,543 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 [2022-11-16 12:14:11,545 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:11,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 11 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:14:11,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-16 12:14:11,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-16 12:14:11,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 18 states have internal predecessors, (20), 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) [2022-11-16 12:14:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-16 12:14:11,551 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 4 [2022-11-16 12:14:11,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:11,551 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-16 12:14:11,552 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) [2022-11-16 12:14:11,552 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-16 12:14:11,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 12:14:11,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:11,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 12:14:11,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:14:11,554 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:14:11,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:11,554 INFO L85 PathProgramCache]: Analyzing trace with hash 925670, now seen corresponding path program 1 times [2022-11-16 12:14:11,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:11,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585986425] [2022-11-16 12:14:11,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:11,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:11,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:11,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:11,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585986425] [2022-11-16 12:14:11,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585986425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:11,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:11,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:14:11,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252500848] [2022-11-16 12:14:11,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:11,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:14:11,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:11,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:14:11,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:14:11,770 INFO L87 Difference]: Start difference. First operand 19 states and 20 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) [2022-11-16 12:14:11,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:11,813 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-11-16 12:14:11,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:14:11,816 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 [2022-11-16 12:14:11,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:11,817 INFO L225 Difference]: With dead ends: 20 [2022-11-16 12:14:11,817 INFO L226 Difference]: Without dead ends: 20 [2022-11-16 12:14:11,817 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 [2022-11-16 12:14:11,819 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:11,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 25 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:14:11,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-16 12:14:11,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-16 12:14:11,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 17 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) [2022-11-16 12:14:11,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-11-16 12:14:11,824 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 4 [2022-11-16 12:14:11,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:11,824 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-11-16 12:14:11,825 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) [2022-11-16 12:14:11,825 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-11-16 12:14:11,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 12:14:11,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:11,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:11,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:14:11,827 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:14:11,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:11,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1806782657, now seen corresponding path program 1 times [2022-11-16 12:14:11,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:11,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657706819] [2022-11-16 12:14:11,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:11,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:12,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:12,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657706819] [2022-11-16 12:14:12,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657706819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:12,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:12,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:14:12,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125666813] [2022-11-16 12:14:12,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:12,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:14:12,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:12,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:14:12,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:14:12,020 INFO L87 Difference]: Start difference. First operand 18 states and 19 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) [2022-11-16 12:14:12,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:12,056 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-16 12:14:12,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:14:12,057 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 [2022-11-16 12:14:12,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:12,058 INFO L225 Difference]: With dead ends: 19 [2022-11-16 12:14:12,058 INFO L226 Difference]: Without dead ends: 18 [2022-11-16 12:14:12,058 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 [2022-11-16 12:14:12,060 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:12,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:14:12,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-16 12:14:12,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-16 12:14:12,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 17 states have internal predecessors, (18), 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) [2022-11-16 12:14:12,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-16 12:14:12,064 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 7 [2022-11-16 12:14:12,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:12,065 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-16 12:14:12,065 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) [2022-11-16 12:14:12,065 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-16 12:14:12,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 12:14:12,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:12,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:12,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:14:12,067 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:14:12,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:12,067 INFO L85 PathProgramCache]: Analyzing trace with hash 175688875, now seen corresponding path program 1 times [2022-11-16 12:14:12,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:12,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904617500] [2022-11-16 12:14:12,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:12,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:12,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:12,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:12,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904617500] [2022-11-16 12:14:12,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904617500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:12,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:12,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:14:12,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591073760] [2022-11-16 12:14:12,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:12,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:14:12,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:12,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:14:12,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:14:12,366 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2022-11-16 12:14:12,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:12,479 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-11-16 12:14:12,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:14:12,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 8 [2022-11-16 12:14:12,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:12,481 INFO L225 Difference]: With dead ends: 17 [2022-11-16 12:14:12,481 INFO L226 Difference]: Without dead ends: 17 [2022-11-16 12:14:12,482 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 [2022-11-16 12:14:12,483 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:12,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 12 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:14:12,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-16 12:14:12,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-16 12:14:12,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 16 states have internal predecessors, (17), 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) [2022-11-16 12:14:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-11-16 12:14:12,487 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 8 [2022-11-16 12:14:12,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:12,488 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-11-16 12:14:12,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2022-11-16 12:14:12,488 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-11-16 12:14:12,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 12:14:12,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:12,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:12,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:14:12,490 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:14:12,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:12,491 INFO L85 PathProgramCache]: Analyzing trace with hash 175688876, now seen corresponding path program 1 times [2022-11-16 12:14:12,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:12,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736465415] [2022-11-16 12:14:12,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:12,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:12,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:12,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:12,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736465415] [2022-11-16 12:14:12,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736465415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:12,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:12,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:14:12,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211399914] [2022-11-16 12:14:12,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:12,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:14:12,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:12,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:14:12,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:14:12,969 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-11-16 12:14:13,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:13,152 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-11-16 12:14:13,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:14:13,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 8 [2022-11-16 12:14:13,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:13,155 INFO L225 Difference]: With dead ends: 23 [2022-11-16 12:14:13,156 INFO L226 Difference]: Without dead ends: 23 [2022-11-16 12:14:13,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:14:13,161 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 40 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:13,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 21 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:14:13,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-16 12:14:13,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2022-11-16 12:14:13,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 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) [2022-11-16 12:14:13,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2022-11-16 12:14:13,174 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 8 [2022-11-16 12:14:13,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:13,174 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2022-11-16 12:14:13,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-11-16 12:14:13,175 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2022-11-16 12:14:13,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:14:13,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:13,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:13,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:14:13,179 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:14:13,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:13,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1151387824, now seen corresponding path program 1 times [2022-11-16 12:14:13,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:13,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703578533] [2022-11-16 12:14:13,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:13,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:13,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:13,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703578533] [2022-11-16 12:14:13,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703578533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:13,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:13,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:14:13,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684336003] [2022-11-16 12:14:13,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:13,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:14:13,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:13,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:14:13,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:14:13,259 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-16 12:14:13,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:13,313 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-11-16 12:14:13,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:14:13,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 12:14:13,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:13,315 INFO L225 Difference]: With dead ends: 18 [2022-11-16 12:14:13,315 INFO L226 Difference]: Without dead ends: 18 [2022-11-16 12:14:13,316 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 [2022-11-16 12:14:13,317 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:13,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 14 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:14:13,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-16 12:14:13,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-16 12:14:13,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 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) [2022-11-16 12:14:13,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-16 12:14:13,322 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2022-11-16 12:14:13,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:13,322 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-16 12:14:13,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-16 12:14:13,323 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-16 12:14:13,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:14:13,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:13,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:13,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:14:13,324 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:14:13,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:13,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1151387825, now seen corresponding path program 1 times [2022-11-16 12:14:13,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:13,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740132891] [2022-11-16 12:14:13,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:13,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:13,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:13,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:13,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740132891] [2022-11-16 12:14:13,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740132891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:13,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:13,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:14:13,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852469146] [2022-11-16 12:14:13,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:13,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:14:13,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:13,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:14:13,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:14:13,513 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-11-16 12:14:13,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:13,606 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-11-16 12:14:13,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:14:13,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 12:14:13,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:13,609 INFO L225 Difference]: With dead ends: 20 [2022-11-16 12:14:13,609 INFO L226 Difference]: Without dead ends: 20 [2022-11-16 12:14:13,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:14:13,610 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:13,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 27 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:14:13,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-16 12:14:13,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2022-11-16 12:14:13,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.1875) internal successors, (19), 18 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) [2022-11-16 12:14:13,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2022-11-16 12:14:13,616 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 9 [2022-11-16 12:14:13,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:13,617 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2022-11-16 12:14:13,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-11-16 12:14:13,617 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2022-11-16 12:14:13,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 12:14:13,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:13,618 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:13,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:14:13,619 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:14:13,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:13,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1385840564, now seen corresponding path program 1 times [2022-11-16 12:14:13,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:13,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112394995] [2022-11-16 12:14:13,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:13,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:14,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:14,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:14,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112394995] [2022-11-16 12:14:14,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112394995] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:14,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678677849] [2022-11-16 12:14:14,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:14,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:14,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:14,343 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:14,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:14:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:14,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-16 12:14:14,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:14,593 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 [2022-11-16 12:14:14,776 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:14:14,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 12:14:14,897 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:14:14,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 12:14:15,136 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:15,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 17 [2022-11-16 12:14:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:15,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:15,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:14:15,681 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 16 treesize of output 12 [2022-11-16 12:14:15,689 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 15 treesize of output 13 [2022-11-16 12:14:15,697 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 20 treesize of output 16 [2022-11-16 12:14:15,713 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 12:14:15,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-16 12:14:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:15,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678677849] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:14:15,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:14:15,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-11-16 12:14:15,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867974636] [2022-11-16 12:14:15,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:14:15,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:14:15,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:15,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:14:15,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:14:15,737 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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) [2022-11-16 12:14:16,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:16,030 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-11-16 12:14:16,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:14:16,032 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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 12 [2022-11-16 12:14:16,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:16,032 INFO L225 Difference]: With dead ends: 25 [2022-11-16 12:14:16,032 INFO L226 Difference]: Without dead ends: 25 [2022-11-16 12:14:16,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:14:16,034 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:16,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 74 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 32 Unchecked, 0.1s Time] [2022-11-16 12:14:16,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-16 12:14:16,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2022-11-16 12:14:16,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 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) [2022-11-16 12:14:16,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-11-16 12:14:16,037 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 12 [2022-11-16 12:14:16,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:16,038 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-11-16 12:14:16,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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) [2022-11-16 12:14:16,038 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-11-16 12:14:16,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:14:16,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:16,039 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:16,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:16,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:16,240 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:14:16,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:16,241 INFO L85 PathProgramCache]: Analyzing trace with hash 11384489, now seen corresponding path program 1 times [2022-11-16 12:14:16,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:16,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661377752] [2022-11-16 12:14:16,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:16,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:16,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:16,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661377752] [2022-11-16 12:14:16,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661377752] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:16,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801267691] [2022-11-16 12:14:16,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:16,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:16,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:16,995 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:17,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:14:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:17,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-16 12:14:17,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:17,139 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 [2022-11-16 12:14:17,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 12:14:17,546 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:17,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-11-16 12:14:17,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:17,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:18,618 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 13 treesize of output 11 [2022-11-16 12:14:18,626 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 22 treesize of output 20 [2022-11-16 12:14:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:18,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801267691] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:14:18,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:14:18,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-16 12:14:18,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359947569] [2022-11-16 12:14:18,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:14:18,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 12:14:18,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:18,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 12:14:18,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:14:18,746 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 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) [2022-11-16 12:14:19,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:19,798 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-11-16 12:14:19,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:14:19,799 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 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 13 [2022-11-16 12:14:19,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:19,800 INFO L225 Difference]: With dead ends: 23 [2022-11-16 12:14:19,800 INFO L226 Difference]: Without dead ends: 23 [2022-11-16 12:14:19,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=186, Invalid=1296, Unknown=0, NotChecked=0, Total=1482 [2022-11-16 12:14:19,801 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 32 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:19,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 106 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 125 Invalid, 0 Unknown, 41 Unchecked, 0.2s Time] [2022-11-16 12:14:19,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-16 12:14:19,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2022-11-16 12:14:19,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 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) [2022-11-16 12:14:19,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-11-16 12:14:19,805 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 13 [2022-11-16 12:14:19,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:19,805 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-11-16 12:14:19,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 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) [2022-11-16 12:14:19,805 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-11-16 12:14:19,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:14:19,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:19,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:19,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:20,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:14:20,008 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:14:20,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:20,008 INFO L85 PathProgramCache]: Analyzing trace with hash 11339831, now seen corresponding path program 1 times [2022-11-16 12:14:20,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:20,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779290942] [2022-11-16 12:14:20,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:20,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:20,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:20,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:20,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779290942] [2022-11-16 12:14:20,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779290942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:20,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:20,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:14:20,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635432785] [2022-11-16 12:14:20,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:20,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:14:20,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:20,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:14:20,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:14:20,266 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-11-16 12:14:20,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:20,293 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-11-16 12:14:20,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:14:20,294 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 13 [2022-11-16 12:14:20,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:20,294 INFO L225 Difference]: With dead ends: 20 [2022-11-16 12:14:20,294 INFO L226 Difference]: Without dead ends: 17 [2022-11-16 12:14:20,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:14:20,295 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:20,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 20 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:14:20,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-16 12:14:20,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-16 12:14:20,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 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) [2022-11-16 12:14:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-11-16 12:14:20,299 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2022-11-16 12:14:20,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:20,299 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-11-16 12:14:20,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-11-16 12:14:20,300 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-11-16 12:14:20,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:14:20,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:20,301 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:20,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:14:20,301 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:14:20,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:20,302 INFO L85 PathProgramCache]: Analyzing trace with hash -147132740, now seen corresponding path program 2 times [2022-11-16 12:14:20,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:20,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425522182] [2022-11-16 12:14:20,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:20,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:21,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:21,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:21,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425522182] [2022-11-16 12:14:21,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425522182] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:21,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760249511] [2022-11-16 12:14:21,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:14:21,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:21,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:21,235 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:21,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:14:21,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:14:21,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:14:21,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-16 12:14:21,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:21,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:14:21,380 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 [2022-11-16 12:14:21,487 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:14:21,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 12:14:21,546 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:14:21,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 12:14:21,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2022-11-16 12:14:22,179 INFO L321 Elim1Store]: treesize reduction 4, result has 81.8 percent of original size [2022-11-16 12:14:22,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2022-11-16 12:14:22,339 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:22,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:23,328 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:23,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 36 [2022-11-16 12:14:23,366 INFO L321 Elim1Store]: treesize reduction 25, result has 44.4 percent of original size [2022-11-16 12:14:23,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 39 [2022-11-16 12:14:23,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:14:23,390 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-16 12:14:23,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2022-11-16 12:14:23,420 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 12:14:23,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-16 12:14:23,508 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:23,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760249511] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:14:23,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:14:23,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2022-11-16 12:14:23,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9527819] [2022-11-16 12:14:23,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:14:23,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:14:23,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:23,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:14:23,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=895, Unknown=3, NotChecked=0, Total=992 [2022-11-16 12:14:23,514 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 32 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) [2022-11-16 12:14:24,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:24,339 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-11-16 12:14:24,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:14:24,341 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 32 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) Word has length 16 [2022-11-16 12:14:24,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:24,342 INFO L225 Difference]: With dead ends: 23 [2022-11-16 12:14:24,342 INFO L226 Difference]: Without dead ends: 23 [2022-11-16 12:14:24,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=158, Invalid=1399, Unknown=3, NotChecked=0, Total=1560 [2022-11-16 12:14:24,344 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:24,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 59 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 51 Unchecked, 0.1s Time] [2022-11-16 12:14:24,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-16 12:14:24,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2022-11-16 12:14:24,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 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) [2022-11-16 12:14:24,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-11-16 12:14:24,348 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 16 [2022-11-16 12:14:24,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:24,348 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-11-16 12:14:24,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 32 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) [2022-11-16 12:14:24,349 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-11-16 12:14:24,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 12:14:24,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:24,350 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:24,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:24,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:24,556 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:14:24,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:24,557 INFO L85 PathProgramCache]: Analyzing trace with hash -295904828, now seen corresponding path program 3 times [2022-11-16 12:14:24,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:24,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123672893] [2022-11-16 12:14:24,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:24,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:25,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:25,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123672893] [2022-11-16 12:14:25,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123672893] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:25,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881690896] [2022-11-16 12:14:25,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:14:25,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:25,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:25,559 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:25,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:14:25,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 12:14:25,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:14:25,802 WARN L261 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 98 conjunts are in the unsatisfiable core [2022-11-16 12:14:25,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:25,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:14:25,860 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 [2022-11-16 12:14:26,001 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:14:26,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 12:14:26,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:14:26,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-16 12:14:26,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-11-16 12:14:27,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:14:27,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:14:27,035 INFO L321 Elim1Store]: treesize reduction 8, result has 70.4 percent of original size [2022-11-16 12:14:27,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 33 [2022-11-16 12:14:27,243 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:27,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:28,774 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:28,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 48 [2022-11-16 12:14:28,781 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:14:28,784 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 31 treesize of output 25 [2022-11-16 12:14:28,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2022-11-16 12:14:28,815 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-16 12:14:28,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-16 12:14:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:28,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881690896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:14:28,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:14:28,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 44 [2022-11-16 12:14:28,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325246797] [2022-11-16 12:14:28,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:14:28,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-16 12:14:28,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:28,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-16 12:14:28,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1812, Unknown=4, NotChecked=0, Total=1980 [2022-11-16 12:14:28,961 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 45 states, 44 states have (on average 1.2727272727272727) 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) [2022-11-16 12:14:31,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:31,013 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2022-11-16 12:14:31,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:14:31,014 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.2727272727272727) 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) Word has length 20 [2022-11-16 12:14:31,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:31,014 INFO L225 Difference]: With dead ends: 31 [2022-11-16 12:14:31,014 INFO L226 Difference]: Without dead ends: 31 [2022-11-16 12:14:31,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=321, Invalid=3454, Unknown=7, NotChecked=0, Total=3782 [2022-11-16 12:14:31,017 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:31,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 85 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 126 Invalid, 0 Unknown, 189 Unchecked, 0.1s Time] [2022-11-16 12:14:31,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-16 12:14:31,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2022-11-16 12:14:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 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) [2022-11-16 12:14:31,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2022-11-16 12:14:31,021 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 20 [2022-11-16 12:14:31,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:31,021 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2022-11-16 12:14:31,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.2727272727272727) 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) [2022-11-16 12:14:31,021 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2022-11-16 12:14:31,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 12:14:31,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:31,022 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:31,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:31,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 12:14:31,223 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:14:31,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:31,223 INFO L85 PathProgramCache]: Analyzing trace with hash 388785108, now seen corresponding path program 4 times [2022-11-16 12:14:31,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:31,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972438813] [2022-11-16 12:14:31,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:31,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:32,860 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:32,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:32,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972438813] [2022-11-16 12:14:32,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972438813] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:32,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645478] [2022-11-16 12:14:32,861 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:14:32,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:32,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:32,862 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:32,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:14:33,010 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:14:33,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:14:33,014 WARN L261 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 138 conjunts are in the unsatisfiable core [2022-11-16 12:14:33,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:33,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:14:33,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:14:33,089 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 [2022-11-16 12:14:33,206 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:14:33,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 12:14:33,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:14:33,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-16 12:14:33,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-11-16 12:14:34,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-11-16 12:14:35,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2022-11-16 12:14:35,562 INFO L321 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2022-11-16 12:14:35,562 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 49 treesize of output 47 [2022-11-16 12:14:35,794 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:35,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:39,536 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:39,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 106 treesize of output 72 [2022-11-16 12:14:39,567 INFO L321 Elim1Store]: treesize reduction 17, result has 54.1 percent of original size [2022-11-16 12:14:39,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 31 [2022-11-16 12:14:39,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:14:39,619 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:39,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 119 treesize of output 116 [2022-11-16 12:14:39,640 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 11 treesize of output 7 [2022-11-16 12:14:39,653 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 11 treesize of output 7 [2022-11-16 12:14:39,665 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 11 treesize of output 7 [2022-11-16 12:14:39,680 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 11 treesize of output 7 [2022-11-16 12:14:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:39,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645478] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:14:39,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:14:39,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 24] total 66 [2022-11-16 12:14:39,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680894824] [2022-11-16 12:14:39,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:14:39,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-11-16 12:14:39,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:39,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-11-16 12:14:39,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=4071, Unknown=34, NotChecked=0, Total=4422 [2022-11-16 12:14:39,994 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 67 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 67 states have internal predecessors, (80), 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) [2022-11-16 12:14:53,320 WARN L233 SmtUtils]: Spent 10.54s on a formula simplification. DAG size of input: 123 DAG size of output: 113 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:14:58,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:58,242 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2022-11-16 12:14:58,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-16 12:14:58,245 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 67 states have internal predecessors, (80), 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 [2022-11-16 12:14:58,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:58,246 INFO L225 Difference]: With dead ends: 49 [2022-11-16 12:14:58,246 INFO L226 Difference]: Without dead ends: 49 [2022-11-16 12:14:58,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1882 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=883, Invalid=9555, Unknown=68, NotChecked=0, Total=10506 [2022-11-16 12:14:58,260 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:58,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 99 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 79 Unchecked, 0.0s Time] [2022-11-16 12:14:58,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-16 12:14:58,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-16 12:14:58,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 48 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) [2022-11-16 12:14:58,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2022-11-16 12:14:58,272 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 28 [2022-11-16 12:14:58,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:58,272 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2022-11-16 12:14:58,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 67 states have internal predecessors, (80), 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) [2022-11-16 12:14:58,273 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2022-11-16 12:14:58,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 12:14:58,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:58,279 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:58,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:58,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:14:58,486 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2022-11-16 12:14:58,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:58,487 INFO L85 PathProgramCache]: Analyzing trace with hash -48965892, now seen corresponding path program 5 times [2022-11-16 12:14:58,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:58,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588180848] [2022-11-16 12:14:58,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:58,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:03,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:03,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588180848] [2022-11-16 12:15:03,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588180848] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:15:03,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881535796] [2022-11-16 12:15:03,032 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:15:03,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:03,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:03,034 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:03,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a19eaa4c-f61f-4944-9045-aea5fa08a7a1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:15:03,341 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-11-16 12:15:03,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:15:03,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 195 conjunts are in the unsatisfiable core [2022-11-16 12:15:03,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:03,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:15:03,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:15:03,469 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 [2022-11-16 12:15:03,639 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:15:03,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 12:15:03,686 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:15:03,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 12:15:04,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2022-11-16 12:15:11,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2022-11-16 12:15:26,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2022-11-16 12:15:53,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 50 [2022-11-16 12:16:18,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 58 [2022-11-16 12:16:43,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 66 [2022-11-16 12:17:26,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 74 [2022-11-16 12:18:11,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 82 [2022-11-16 12:19:20,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 90 [2022-11-16 12:19:57,583 INFO L321 Elim1Store]: treesize reduction 36, result has 55.6 percent of original size [2022-11-16 12:19:57,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 10 case distinctions, treesize of input 110 treesize of output 87 [2022-11-16 12:19:57,599 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2022-11-16 12:19:57,632 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2022-11-16 12:19:57,884 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 40 proven. 47 refuted. 113 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:57,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:22:29,720 WARN L833 $PredicateComparison]: unable to prove that (or (let ((.cse0 (+ 9 |c_ULTIMATE.start_main_~in~0#1.offset|)) (.cse1 (+ 2 |c_ULTIMATE.start_main_~in~0#1.offset|)) (.cse2 (+ |c_ULTIMATE.start_main_~in~0#1.offset| 4)) (.cse3 (+ 8 |c_ULTIMATE.start_main_~in~0#1.offset|)) (.cse4 (+ 3 |c_ULTIMATE.start_main_~in~0#1.offset|)) (.cse5 (+ 7 |c_ULTIMATE.start_main_~in~0#1.offset|)) (.cse6 (+ |c_ULTIMATE.start_main_~in~0#1.offset| 1)) (.cse7 (+ 5 |c_ULTIMATE.start_main_~in~0#1.offset|)) (.cse8 (+ 6 |c_ULTIMATE.start_main_~in~0#1.offset|))) (and (forall ((v_ArrVal_238 (Array Int Int)) (v_ArrVal_237 (Array Int Int)) (v_ArrVal_239 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc8#1.base_10| Int) (v_ArrVal_240 (Array Int Int)) (v_ArrVal_243 (Array Int Int)) (v_ArrVal_242 (Array Int Int)) (v_ArrVal_244 (Array Int Int)) (v_ArrVal_236 (Array Int Int)) (v_ArrVal_235 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc8#1.base_10|) 0)) (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_#t~malloc8#1.base_10| v_ArrVal_244) |c_ULTIMATE.start_main_~in~0#1.base|) .cse0) 0) (= 0 (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_#t~malloc8#1.base_10| v_ArrVal_236) |c_ULTIMATE.start_main_~in~0#1.base|) .cse1)) (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_#t~malloc8#1.base_10| v_ArrVal_238) |c_ULTIMATE.start_main_~in~0#1.base|) .cse2) 0) (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_#t~malloc8#1.base_10| v_ArrVal_243) |c_ULTIMATE.start_main_~in~0#1.base|) .cse3) 0) (forall ((v_ArrVal_234 Int)) (<= (+ |c_ULTIMATE.start_main_~in~0#1.offset| 11) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc8#1.base_10| v_ArrVal_234) |c_ULTIMATE.start_main_~in~0#1.base|))) (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_#t~malloc8#1.base_10| v_ArrVal_237) |c_ULTIMATE.start_main_~in~0#1.base|) .cse4) 0) (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_#t~malloc8#1.base_10| v_ArrVal_242) |c_ULTIMATE.start_main_~in~0#1.base|) .cse5) 0) (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_#t~malloc8#1.base_10| v_ArrVal_235) |c_ULTIMATE.start_main_~in~0#1.base|) .cse6) 0) (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_#t~malloc8#1.base_10| v_ArrVal_239) |c_ULTIMATE.start_main_~in~0#1.base|) .cse7) 0) (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_#t~malloc8#1.base_10| v_ArrVal_240) |c_ULTIMATE.start_main_~in~0#1.base|) .cse8) 0))) (or (forall ((v_ArrVal_238 (Array Int Int)) (v_ArrVal_237 (Array Int Int)) (v_ArrVal_239 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc8#1.base_10| Int) (v_ArrVal_240 (Array Int Int)) (v_ArrVal_243 (Array Int Int)) (v_ArrVal_242 (Array Int Int)) (v_ArrVal_244 (Array Int Int)) (v_ArrVal_236 (Array Int Int)) (v_ArrVal_235 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc8#1.base_10|) 0)) (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_#t~malloc8#1.base_10| v_ArrVal_244) |c_ULTIMATE.start_main_~in~0#1.base|) .cse0) 0) (= 0 (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_#t~malloc8#1.base_10| v_ArrVal_236) |c_ULTIMATE.start_main_~in~0#1.base|) .cse1)) (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_#t~malloc8#1.base_10| v_ArrVal_238) |c_ULTIMATE.start_main_~in~0#1.base|) .cse2) 0) (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_#t~malloc8#1.base_10| v_ArrVal_243) |c_ULTIMATE.start_main_~in~0#1.base|) .cse3) 0) (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_#t~malloc8#1.base_10| v_ArrVal_237) |c_ULTIMATE.start_main_~in~0#1.base|) .cse4) 0) (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_#t~malloc8#1.base_10| v_ArrVal_242) |c_ULTIMATE.start_main_~in~0#1.base|) .cse5) 0) (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_#t~malloc8#1.base_10| v_ArrVal_235) |c_ULTIMATE.start_main_~in~0#1.base|) .cse6) 0) (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_#t~malloc8#1.base_10| v_ArrVal_239) |c_ULTIMATE.start_main_~in~0#1.base|) .cse7) 0) (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_#t~malloc8#1.base_10| v_ArrVal_240) |c_ULTIMATE.start_main_~in~0#1.base|) .cse8) 0))) (<= 0 (+ |c_ULTIMATE.start_main_~in~0#1.offset| 10))))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~in~0#1.base|) |c_ULTIMATE.start_main_~in~0#1.offset|) 0)) is different from false [2022-11-16 12:22:30,000 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:22:30,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 458 treesize of output 270 [2022-11-16 12:22:30,018 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 493 treesize of output 455 [2022-11-16 12:22:30,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 620 treesize of output 546 [2022-11-16 12:22:30,153 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 11 treesize of output 7 [2022-11-16 12:22:30,172 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 11 treesize of output 7 [2022-11-16 12:22:30,189 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 11 treesize of output 7 [2022-11-16 12:22:30,206 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 11 treesize of output 7 [2022-11-16 12:22:30,223 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 11 treesize of output 7 [2022-11-16 12:22:30,241 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 11 treesize of output 7 [2022-11-16 12:22:30,257 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 11 treesize of output 7 [2022-11-16 12:22:30,274 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 11 treesize of output 7 [2022-11-16 12:22:30,291 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 11 treesize of output 7 [2022-11-16 12:22:30,541 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 11 treesize of output 7 [2022-11-16 12:22:30,556 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 11 treesize of output 7 [2022-11-16 12:22:30,572 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 11 treesize of output 7 [2022-11-16 12:22:30,588 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 11 treesize of output 7 [2022-11-16 12:22:30,606 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 11 treesize of output 7 [2022-11-16 12:22:30,622 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 11 treesize of output 7 [2022-11-16 12:22:30,637 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 11 treesize of output 7 [2022-11-16 12:22:30,653 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 11 treesize of output 7 [2022-11-16 12:22:30,669 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 11 treesize of output 7 [2022-11-16 12:22:31,478 WARN L718 sPolynomialRelations]: Constructing 1024(two to the power of 10 dual juncts. [2022-11-16 12:22:31,532 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:31,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881535796] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:22:31,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:22:31,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 44, 44] total 119 [2022-11-16 12:22:31,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174439481] [2022-11-16 12:22:31,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:22:31,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2022-11-16 12:22:31,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:31,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2022-11-16 12:22:31,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=12658, Unknown=459, NotChecked=234, Total=14280 [2022-11-16 12:22:31,541 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 120 states, 119 states have (on average 1.1596638655462186) internal successors, (138), 120 states have internal predecessors, (138), 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) [2022-11-16 12:23:10,935 WARN L233 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 57 DAG size of output: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:23:25,158 WARN L233 SmtUtils]: Spent 7.41s on a formula simplification. DAG size of input: 69 DAG size of output: 64 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:23:35,789 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 66 DAG size of output: 63 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:23:50,642 WARN L233 SmtUtils]: Spent 11.30s on a formula simplification. DAG size of input: 71 DAG size of output: 69 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:23:59,415 WARN L233 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 62 DAG size of output: 61 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:24:10,092 WARN L233 SmtUtils]: Spent 7.19s on a formula simplification. DAG size of input: 74 DAG size of output: 69 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:24:21,337 WARN L233 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 71 DAG size of output: 68 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:24:33,596 WARN L233 SmtUtils]: Spent 9.54s on a formula simplification. DAG size of input: 76 DAG size of output: 74 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:24:41,799 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 67 DAG size of output: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:24:54,565 WARN L233 SmtUtils]: Spent 9.97s on a formula simplification. DAG size of input: 88 DAG size of output: 83 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:25:06,932 WARN L233 SmtUtils]: Spent 8.11s on a formula simplification. DAG size of input: 76 DAG size of output: 73 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:25:17,057 WARN L233 SmtUtils]: Spent 7.84s on a formula simplification. DAG size of input: 72 DAG size of output: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:25:28,928 WARN L233 SmtUtils]: Spent 7.61s on a formula simplification. DAG size of input: 72 DAG size of output: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:25:38,916 WARN L233 SmtUtils]: Spent 7.48s on a formula simplification. DAG size of input: 102 DAG size of output: 80 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:25:52,223 WARN L233 SmtUtils]: Spent 8.40s on a formula simplification. DAG size of input: 90 DAG size of output: 86 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:26:01,520 WARN L233 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 77 DAG size of output: 76 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:26:12,846 WARN L233 SmtUtils]: Spent 7.09s on a formula simplification. DAG size of input: 77 DAG size of output: 76 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:26:29,347 WARN L233 SmtUtils]: Spent 14.00s on a formula simplification. DAG size of input: 107 DAG size of output: 100 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:26:46,042 WARN L233 SmtUtils]: Spent 12.29s on a formula simplification. DAG size of input: 104 DAG size of output: 99 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:26:58,128 WARN L233 SmtUtils]: Spent 7.68s on a formula simplification. DAG size of input: 91 DAG size of output: 81 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:27:12,667 WARN L233 SmtUtils]: Spent 10.19s on a formula simplification. DAG size of input: 91 DAG size of output: 89 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:27:22,767 WARN L233 SmtUtils]: Spent 7.72s on a formula simplification. DAG size of input: 92 DAG size of output: 90 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:27:46,824 WARN L233 SmtUtils]: Spent 17.95s on a formula simplification. DAG size of input: 116 DAG size of output: 112 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:28:04,918 WARN L233 SmtUtils]: Spent 15.38s on a formula simplification. DAG size of input: 105 DAG size of output: 102 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:28:24,076 WARN L233 SmtUtils]: Spent 15.02s on a formula simplification. DAG size of input: 105 DAG size of output: 102 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:28:38,212 WARN L233 SmtUtils]: Spent 6.76s on a formula simplification. DAG size of input: 96 DAG size of output: 86 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:29:06,891 WARN L233 SmtUtils]: Spent 24.45s on a formula simplification. DAG size of input: 117 DAG size of output: 98 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)