./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3b4637ab5710a1ca22a981e8047278048fbbf856825d3649b2cb9d48de11d175 --- 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-2329fc7 [2022-12-13 17:51:42,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:51:42,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:51:42,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:51:42,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:51:42,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:51:42,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:51:42,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:51:42,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:51:42,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:51:42,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:51:42,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:51:42,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:51:42,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:51:42,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:51:42,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:51:42,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:51:42,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:51:42,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:51:42,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:51:42,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:51:42,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:51:42,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:51:42,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:51:42,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:51:42,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:51:42,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:51:42,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:51:42,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:51:42,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:51:42,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:51:42,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:51:42,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:51:42,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:51:42,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:51:42,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:51:42,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:51:42,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:51:42,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:51:42,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:51:42,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:51:42,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 17:51:42,728 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:51:42,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:51:42,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:51:42,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:51:42,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:51:42,729 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:51:42,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:51:42,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:51:42,730 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:51:42,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:51:42,730 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:51:42,730 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:51:42,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:51:42,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:51:42,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:51:42,731 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 17:51:42,731 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 17:51:42,731 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 17:51:42,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:51:42,731 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 17:51:42,732 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:51:42,732 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:51:42,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:51:42,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:51:42,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:51:42,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:51:42,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:51:42,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:51:42,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:51:42,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:51:42,733 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:51:42,734 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:51:42,734 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:51:42,734 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:51:42,734 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b4637ab5710a1ca22a981e8047278048fbbf856825d3649b2cb9d48de11d175 [2022-12-13 17:51:42,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:51:42,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:51:42,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:51:42,924 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:51:42,924 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:51:42,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i [2022-12-13 17:51:45,548 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:51:45,731 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:51:45,731 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i [2022-12-13 17:51:45,739 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/data/54b4cd8cf/356b689626364f0c85d679449dce5ff5/FLAGb6523ef94 [2022-12-13 17:51:45,750 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/data/54b4cd8cf/356b689626364f0c85d679449dce5ff5 [2022-12-13 17:51:45,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:51:45,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:51:45,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:51:45,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:51:45,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:51:45,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:51:45" (1/1) ... [2022-12-13 17:51:45,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66588662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:51:45, skipping insertion in model container [2022-12-13 17:51:45,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:51:45" (1/1) ... [2022-12-13 17:51:45,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:51:45,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:51:45,968 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i[23974,23987] [2022-12-13 17:51:45,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:51:45,977 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:51:46,004 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i[23974,23987] [2022-12-13 17:51:46,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:51:46,021 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:51:46,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:51:46 WrapperNode [2022-12-13 17:51:46,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:51:46,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:51:46,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:51:46,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:51:46,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:51:46" (1/1) ... [2022-12-13 17:51:46,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:51:46" (1/1) ... [2022-12-13 17:51:46,050 INFO L138 Inliner]: procedures = 122, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 111 [2022-12-13 17:51:46,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:51:46,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:51:46,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:51:46,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:51:46,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:51:46" (1/1) ... [2022-12-13 17:51:46,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:51:46" (1/1) ... [2022-12-13 17:51:46,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:51:46" (1/1) ... [2022-12-13 17:51:46,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:51:46" (1/1) ... [2022-12-13 17:51:46,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:51:46" (1/1) ... [2022-12-13 17:51:46,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:51:46" (1/1) ... [2022-12-13 17:51:46,069 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:51:46" (1/1) ... [2022-12-13 17:51:46,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:51:46" (1/1) ... [2022-12-13 17:51:46,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:51:46,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:51:46,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:51:46,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:51:46,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:51:46" (1/1) ... [2022-12-13 17:51:46,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:51:46,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:51:46,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:51:46,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:51:46,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:51:46,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:51:46,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 17:51:46,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:51:46,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 17:51:46,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 17:51:46,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:51:46,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:51:46,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:51:46,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:51:46,211 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:51:46,213 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:51:46,469 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:51:46,474 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:51:46,474 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 17:51:46,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:51:46 BoogieIcfgContainer [2022-12-13 17:51:46,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:51:46,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:51:46,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:51:46,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:51:46,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:51:45" (1/3) ... [2022-12-13 17:51:46,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a1d443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:51:46, skipping insertion in model container [2022-12-13 17:51:46,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:51:46" (2/3) ... [2022-12-13 17:51:46,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a1d443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:51:46, skipping insertion in model container [2022-12-13 17:51:46,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:51:46" (3/3) ... [2022-12-13 17:51:46,482 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_nullified-2.i [2022-12-13 17:51:46,506 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:51:46,506 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2022-12-13 17:51:46,540 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:51:46,545 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=PETRI_NET, 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;@4b1f8ba9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:51:46,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-12-13 17:51:46,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 49 states have (on average 2.0) internal successors, (98), 84 states have internal predecessors, (98), 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) [2022-12-13 17:51:46,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-13 17:51:46,553 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:46,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 17:51:46,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:51:46,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:46,558 INFO L85 PathProgramCache]: Analyzing trace with hash 28699851, now seen corresponding path program 1 times [2022-12-13 17:51:46,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:51:46,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027462087] [2022-12-13 17:51:46,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:46,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:51:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:46,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:46,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:51:46,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027462087] [2022-12-13 17:51:46,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027462087] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:51:46,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:51:46,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:51:46,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010342855] [2022-12-13 17:51:46,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:51:46,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:51:46,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:51:46,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:51:46,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:51:46,744 INFO L87 Difference]: Start difference. First operand has 85 states, 49 states have (on average 2.0) internal successors, (98), 84 states have internal predecessors, (98), 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 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:46,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:46,866 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2022-12-13 17:51:46,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:51:46,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-13 17:51:46,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:46,877 INFO L225 Difference]: With dead ends: 141 [2022-12-13 17:51:46,877 INFO L226 Difference]: Without dead ends: 136 [2022-12-13 17:51:46,879 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 [2022-12-13 17:51:46,882 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 84 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:46,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 164 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:51:46,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-12-13 17:51:46,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 77. [2022-12-13 17:51:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 47 states have (on average 1.8085106382978724) internal successors, (85), 76 states have internal predecessors, (85), 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) [2022-12-13 17:51:46,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2022-12-13 17:51:46,910 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 5 [2022-12-13 17:51:46,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:46,911 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2022-12-13 17:51:46,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:46,911 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2022-12-13 17:51:46,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-13 17:51:46,911 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:46,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 17:51:46,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:51:46,912 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:51:46,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:46,912 INFO L85 PathProgramCache]: Analyzing trace with hash 28699852, now seen corresponding path program 1 times [2022-12-13 17:51:46,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:51:46,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986023677] [2022-12-13 17:51:46,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:46,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:51:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:46,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:46,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:51:46,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986023677] [2022-12-13 17:51:46,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986023677] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:51:46,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:51:46,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:51:46,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438541049] [2022-12-13 17:51:46,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:51:46,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:51:46,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:51:46,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:51:46,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:51:46,988 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:47,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:47,070 INFO L93 Difference]: Finished difference Result 131 states and 146 transitions. [2022-12-13 17:51:47,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:51:47,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-13 17:51:47,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:47,072 INFO L225 Difference]: With dead ends: 131 [2022-12-13 17:51:47,072 INFO L226 Difference]: Without dead ends: 131 [2022-12-13 17:51:47,072 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 [2022-12-13 17:51:47,074 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 76 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:47,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 165 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:51:47,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-12-13 17:51:47,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 72. [2022-12-13 17:51:47,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.702127659574468) internal successors, (80), 71 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) [2022-12-13 17:51:47,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2022-12-13 17:51:47,081 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 5 [2022-12-13 17:51:47,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:47,081 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2022-12-13 17:51:47,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:47,081 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2022-12-13 17:51:47,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-13 17:51:47,082 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:47,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:51:47,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:51:47,082 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:51:47,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:47,082 INFO L85 PathProgramCache]: Analyzing trace with hash 889665583, now seen corresponding path program 1 times [2022-12-13 17:51:47,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:51:47,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932540934] [2022-12-13 17:51:47,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:47,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:51:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:47,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:47,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:51:47,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932540934] [2022-12-13 17:51:47,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932540934] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:51:47,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:51:47,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:51:47,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627092688] [2022-12-13 17:51:47,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:51:47,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:51:47,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:51:47,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:51:47,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:51:47,114 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-12-13 17:51:47,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:47,122 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2022-12-13 17:51:47,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:51:47,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-12-13 17:51:47,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:47,123 INFO L225 Difference]: With dead ends: 84 [2022-12-13 17:51:47,123 INFO L226 Difference]: Without dead ends: 84 [2022-12-13 17:51:47,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:51:47,125 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 12 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:47,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 154 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:51:47,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-12-13 17:51:47,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2022-12-13 17:51:47,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 48 states have (on average 1.6875) internal successors, (81), 72 states have internal predecessors, (81), 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) [2022-12-13 17:51:47,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2022-12-13 17:51:47,131 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 6 [2022-12-13 17:51:47,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:47,131 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2022-12-13 17:51:47,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-12-13 17:51:47,132 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2022-12-13 17:51:47,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 17:51:47,132 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:47,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:47,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:51:47,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:51:47,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:47,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1228392914, now seen corresponding path program 1 times [2022-12-13 17:51:47,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:51:47,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462053563] [2022-12-13 17:51:47,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:47,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:51:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:47,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:47,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:51:47,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462053563] [2022-12-13 17:51:47,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462053563] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:51:47,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:51:47,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:51:47,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616216774] [2022-12-13 17:51:47,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:51:47,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:51:47,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:51:47,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:51:47,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:51:47,193 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:47,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:47,209 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2022-12-13 17:51:47,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:51:47,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-13 17:51:47,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:47,210 INFO L225 Difference]: With dead ends: 81 [2022-12-13 17:51:47,210 INFO L226 Difference]: Without dead ends: 81 [2022-12-13 17:51:47,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:51:47,212 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 1 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:47,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 149 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:51:47,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-12-13 17:51:47,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2022-12-13 17:51:47,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 55 states have (on average 1.6) internal successors, (88), 79 states have internal predecessors, (88), 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) [2022-12-13 17:51:47,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2022-12-13 17:51:47,219 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 11 [2022-12-13 17:51:47,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:47,219 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2022-12-13 17:51:47,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:47,220 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2022-12-13 17:51:47,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 17:51:47,220 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:47,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:47,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 17:51:47,220 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:51:47,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:47,221 INFO L85 PathProgramCache]: Analyzing trace with hash -91353250, now seen corresponding path program 1 times [2022-12-13 17:51:47,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:51:47,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089447812] [2022-12-13 17:51:47,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:47,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:51:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:47,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:51:47,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089447812] [2022-12-13 17:51:47,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089447812] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:51:47,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:51:47,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:51:47,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764516341] [2022-12-13 17:51:47,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:51:47,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:51:47,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:51:47,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:51:47,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:51:47,333 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:47,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:47,485 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2022-12-13 17:51:47,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:51:47,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-13 17:51:47,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:47,486 INFO L225 Difference]: With dead ends: 101 [2022-12-13 17:51:47,486 INFO L226 Difference]: Without dead ends: 101 [2022-12-13 17:51:47,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:51:47,487 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 255 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:47,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 93 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:51:47,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-12-13 17:51:47,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 74. [2022-12-13 17:51:47,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 73 states have internal predecessors, (85), 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) [2022-12-13 17:51:47,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2022-12-13 17:51:47,492 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 15 [2022-12-13 17:51:47,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:47,493 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2022-12-13 17:51:47,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:51:47,493 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2022-12-13 17:51:47,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 17:51:47,493 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:47,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:47,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:51:47,494 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:51:47,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:47,494 INFO L85 PathProgramCache]: Analyzing trace with hash -91353249, now seen corresponding path program 1 times [2022-12-13 17:51:47,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:51:47,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677096516] [2022-12-13 17:51:47,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:47,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:51:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:47,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:47,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:51:47,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677096516] [2022-12-13 17:51:47,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677096516] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:51:47,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002095623] [2022-12-13 17:51:47,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:47,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:51:47,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:51:47,569 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:51:47,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:51:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:47,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 17:51:47,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:51:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:47,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:51:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:47,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002095623] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:51:47,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:51:47,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-12-13 17:51:47,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423303140] [2022-12-13 17:51:47,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:51:47,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:51:47,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:51:47,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:51:47,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:51:47,722 INFO L87 Difference]: Start difference. First operand 74 states and 85 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-12-13 17:51:47,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:47,738 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2022-12-13 17:51:47,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:51:47,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-13 17:51:47,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:47,739 INFO L225 Difference]: With dead ends: 98 [2022-12-13 17:51:47,740 INFO L226 Difference]: Without dead ends: 98 [2022-12-13 17:51:47,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:51:47,741 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 28 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:47,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 213 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:51:47,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-12-13 17:51:47,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2022-12-13 17:51:47,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 80 states have (on average 1.3875) internal successors, (111), 95 states have internal predecessors, (111), 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) [2022-12-13 17:51:47,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2022-12-13 17:51:47,746 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 15 [2022-12-13 17:51:47,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:47,747 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2022-12-13 17:51:47,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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) [2022-12-13 17:51:47,747 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2022-12-13 17:51:47,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 17:51:47,748 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:47,748 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:47,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:51:47,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:51:47,950 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:51:47,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:47,951 INFO L85 PathProgramCache]: Analyzing trace with hash 965941252, now seen corresponding path program 1 times [2022-12-13 17:51:47,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:51:47,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631433768] [2022-12-13 17:51:47,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:47,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:51:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:48,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:51:48,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631433768] [2022-12-13 17:51:48,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631433768] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:51:48,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688146250] [2022-12-13 17:51:48,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:48,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:51:48,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:51:48,291 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:51:48,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:51:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:48,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 17:51:48,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:51:48,408 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 [2022-12-13 17:51:48,412 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 [2022-12-13 17:51:48,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:51:48,496 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 [2022-12-13 17:51:48,503 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 17:51:48,504 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 [2022-12-13 17:51:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:48,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:51:48,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:48,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688146250] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:51:48,850 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:51:48,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2022-12-13 17:51:48,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864208798] [2022-12-13 17:51:48,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:51:48,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 17:51:48,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:51:48,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 17:51:48,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:51:48,852 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 10 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) [2022-12-13 17:51:49,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:49,005 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2022-12-13 17:51:49,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:51:49,005 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 10 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 [2022-12-13 17:51:49,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:49,006 INFO L225 Difference]: With dead ends: 120 [2022-12-13 17:51:49,006 INFO L226 Difference]: Without dead ends: 120 [2022-12-13 17:51:49,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:51:49,007 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 421 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:49,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 77 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:51:49,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-12-13 17:51:49,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 95. [2022-12-13 17:51:49,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 80 states have (on average 1.35) internal successors, (108), 94 states have internal predecessors, (108), 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) [2022-12-13 17:51:49,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 108 transitions. [2022-12-13 17:51:49,013 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 108 transitions. Word has length 20 [2022-12-13 17:51:49,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:49,013 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 108 transitions. [2022-12-13 17:51:49,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 10 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) [2022-12-13 17:51:49,014 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 108 transitions. [2022-12-13 17:51:49,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 17:51:49,015 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:49,015 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:49,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 17:51:49,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:51:49,216 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:51:49,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:49,217 INFO L85 PathProgramCache]: Analyzing trace with hash -671675920, now seen corresponding path program 2 times [2022-12-13 17:51:49,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:51:49,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342327770] [2022-12-13 17:51:49,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:49,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:51:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:49,340 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 17:51:49,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:51:49,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342327770] [2022-12-13 17:51:49,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342327770] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:51:49,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540009561] [2022-12-13 17:51:49,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:51:49,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:51:49,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:51:49,342 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:51:49,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:51:49,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:51:49,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:51:49,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 17:51:49,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:51:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:49,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:51:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:51:49,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540009561] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:51:49,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:51:49,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 9 [2022-12-13 17:51:49,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006897853] [2022-12-13 17:51:49,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:51:49,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 17:51:49,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:51:49,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 17:51:49,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:51:49,605 INFO L87 Difference]: Start difference. First operand 95 states and 108 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 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) [2022-12-13 17:51:49,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:49,720 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2022-12-13 17:51:49,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 17:51:49,721 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 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 42 [2022-12-13 17:51:49,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:49,721 INFO L225 Difference]: With dead ends: 105 [2022-12-13 17:51:49,721 INFO L226 Difference]: Without dead ends: 105 [2022-12-13 17:51:49,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-12-13 17:51:49,722 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 156 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:49,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 173 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:51:49,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-12-13 17:51:49,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-12-13 17:51:49,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 90 states have (on average 1.2777777777777777) internal successors, (115), 104 states have internal predecessors, (115), 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) [2022-12-13 17:51:49,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 115 transitions. [2022-12-13 17:51:49,728 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 115 transitions. Word has length 42 [2022-12-13 17:51:49,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:49,728 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 115 transitions. [2022-12-13 17:51:49,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 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) [2022-12-13 17:51:49,728 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 115 transitions. [2022-12-13 17:51:49,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-13 17:51:49,729 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:49,729 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:49,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:51:49,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 17:51:49,931 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:51:49,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:49,932 INFO L85 PathProgramCache]: Analyzing trace with hash -719682373, now seen corresponding path program 1 times [2022-12-13 17:51:49,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:51:49,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32859545] [2022-12-13 17:51:49,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:49,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:51:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-13 17:51:50,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:51:50,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32859545] [2022-12-13 17:51:50,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32859545] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:51:50,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:51:50,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:51:50,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60898219] [2022-12-13 17:51:50,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:51:50,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:51:50,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:51:50,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:51:50,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:51:50,325 INFO L87 Difference]: Start difference. First operand 105 states and 115 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-12-13 17:51:50,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:50,459 INFO L93 Difference]: Finished difference Result 140 states and 155 transitions. [2022-12-13 17:51:50,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:51:50,460 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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 55 [2022-12-13 17:51:50,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:50,460 INFO L225 Difference]: With dead ends: 140 [2022-12-13 17:51:50,460 INFO L226 Difference]: Without dead ends: 140 [2022-12-13 17:51:50,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:51:50,461 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 344 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:50,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 65 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:51:50,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-12-13 17:51:50,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 131. [2022-12-13 17:51:50,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 116 states have (on average 1.2758620689655173) internal successors, (148), 130 states have internal predecessors, (148), 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) [2022-12-13 17:51:50,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 148 transitions. [2022-12-13 17:51:50,465 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 148 transitions. Word has length 55 [2022-12-13 17:51:50,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:50,465 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 148 transitions. [2022-12-13 17:51:50,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-12-13 17:51:50,465 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 148 transitions. [2022-12-13 17:51:50,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-13 17:51:50,466 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:50,466 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:50,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 17:51:50,466 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:51:50,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:50,467 INFO L85 PathProgramCache]: Analyzing trace with hash 109308747, now seen corresponding path program 1 times [2022-12-13 17:51:50,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:51:50,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280467385] [2022-12-13 17:51:50,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:50,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:51:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:50,581 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-13 17:51:50,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:51:50,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280467385] [2022-12-13 17:51:50,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280467385] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:51:50,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:51:50,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:51:50,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015825505] [2022-12-13 17:51:50,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:51:50,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:51:50,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:51:50,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:51:50,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:51:50,583 INFO L87 Difference]: Start difference. First operand 131 states and 148 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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) [2022-12-13 17:51:50,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:50,668 INFO L93 Difference]: Finished difference Result 137 states and 152 transitions. [2022-12-13 17:51:50,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:51:50,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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 59 [2022-12-13 17:51:50,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:50,669 INFO L225 Difference]: With dead ends: 137 [2022-12-13 17:51:50,669 INFO L226 Difference]: Without dead ends: 137 [2022-12-13 17:51:50,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:51:50,670 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 331 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:50,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 88 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:51:50,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-12-13 17:51:50,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 131. [2022-12-13 17:51:50,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 116 states have (on average 1.2672413793103448) internal successors, (147), 130 states have internal predecessors, (147), 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) [2022-12-13 17:51:50,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 147 transitions. [2022-12-13 17:51:50,674 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 147 transitions. Word has length 59 [2022-12-13 17:51:50,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:50,674 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 147 transitions. [2022-12-13 17:51:50,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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) [2022-12-13 17:51:50,674 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 147 transitions. [2022-12-13 17:51:50,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 17:51:50,675 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:50,675 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:50,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 17:51:50,675 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:51:50,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:50,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1929263777, now seen corresponding path program 1 times [2022-12-13 17:51:50,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:51:50,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787901047] [2022-12-13 17:51:50,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:50,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:51:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:51,201 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 56 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-13 17:51:51,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:51:51,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787901047] [2022-12-13 17:51:51,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787901047] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:51:51,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510091345] [2022-12-13 17:51:51,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:51,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:51:51,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:51:51,203 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:51:51,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:51:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:51,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-13 17:51:51,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:51:51,379 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 [2022-12-13 17:51:51,400 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 17:51:51,401 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 [2022-12-13 17:51:51,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 17:51:51,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:51:51,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 17:51:51,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:51:51,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:51:51,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-13 17:51:51,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:51:51,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:51:51,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-13 17:51:51,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:51:51,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:51:51,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-12-13 17:51:51,526 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 [2022-12-13 17:51:51,617 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:51:51,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-13 17:51:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 17:51:51,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:51:51,639 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1269 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1269) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) 0)) is different from false [2022-12-13 17:51:51,647 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1269 (Array Int Int)) (v_ArrVal_1267 Int)) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 12 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) v_ArrVal_1267)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1269) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) 0)) is different from false [2022-12-13 17:51:51,708 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 7 refuted. 0 times theorem prover too weak. 31 trivial. 3 not checked. [2022-12-13 17:51:51,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510091345] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:51:51,708 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:51:51,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 14] total 23 [2022-12-13 17:51:51,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776277634] [2022-12-13 17:51:51,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:51:51,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 17:51:51,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:51:51,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 17:51:51,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=364, Unknown=2, NotChecked=78, Total=506 [2022-12-13 17:51:51,710 INFO L87 Difference]: Start difference. First operand 131 states and 147 transitions. Second operand has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 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) [2022-12-13 17:51:52,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:52,386 INFO L93 Difference]: Finished difference Result 162 states and 176 transitions. [2022-12-13 17:51:52,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 17:51:52,386 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 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 63 [2022-12-13 17:51:52,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:52,388 INFO L225 Difference]: With dead ends: 162 [2022-12-13 17:51:52,388 INFO L226 Difference]: Without dead ends: 162 [2022-12-13 17:51:52,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 119 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=288, Invalid=978, Unknown=2, NotChecked=138, Total=1406 [2022-12-13 17:51:52,389 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 758 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 258 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:52,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 393 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 465 Invalid, 0 Unknown, 258 Unchecked, 0.3s Time] [2022-12-13 17:51:52,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-12-13 17:51:52,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 131. [2022-12-13 17:51:52,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 116 states have (on average 1.2586206896551724) internal successors, (146), 130 states have internal predecessors, (146), 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) [2022-12-13 17:51:52,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 146 transitions. [2022-12-13 17:51:52,392 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 146 transitions. Word has length 63 [2022-12-13 17:51:52,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:52,392 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 146 transitions. [2022-12-13 17:51:52,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 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) [2022-12-13 17:51:52,392 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 146 transitions. [2022-12-13 17:51:52,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 17:51:52,393 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:52,393 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:52,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:51:52,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:51:52,594 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:51:52,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:52,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1264795644, now seen corresponding path program 1 times [2022-12-13 17:51:52,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:51:52,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461754571] [2022-12-13 17:51:52,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:52,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:51:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:53,463 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 32 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 17:51:53,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:51:53,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461754571] [2022-12-13 17:51:53,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461754571] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:51:53,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651370059] [2022-12-13 17:51:53,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:53,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:51:53,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:51:53,465 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:51:53,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:51:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:53,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 43 conjunts are in the unsatisfiable core [2022-12-13 17:51:53,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:51:53,626 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 [2022-12-13 17:51:53,641 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 17:51:53,641 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 [2022-12-13 17:51:53,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:51:53,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:51:53,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:51:53,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:51:53,691 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 16 treesize of output 18 [2022-12-13 17:51:53,739 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 7 [2022-12-13 17:51:53,744 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 17:51:53,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:51:53,834 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1648 (Array Int Int)) (v_ArrVal_1647 Int)) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 12 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) v_ArrVal_1647)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1648) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) 0)) is different from false [2022-12-13 17:51:53,927 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:51:53,928 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-12-13 17:51:53,932 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 36 treesize of output 24 [2022-12-13 17:51:53,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 17:51:53,983 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 9 refuted. 0 times theorem prover too weak. 31 trivial. 1 not checked. [2022-12-13 17:51:53,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651370059] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:51:53,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:51:53,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 15] total 24 [2022-12-13 17:51:53,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283481242] [2022-12-13 17:51:53,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:51:53,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 17:51:53,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:51:53,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 17:51:53,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=438, Unknown=7, NotChecked=42, Total=552 [2022-12-13 17:51:53,985 INFO L87 Difference]: Start difference. First operand 131 states and 146 transitions. Second operand has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 24 states have internal predecessors, (86), 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) [2022-12-13 17:51:54,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:54,542 INFO L93 Difference]: Finished difference Result 162 states and 175 transitions. [2022-12-13 17:51:54,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 17:51:54,543 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 24 states have internal predecessors, (86), 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 65 [2022-12-13 17:51:54,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:54,543 INFO L225 Difference]: With dead ends: 162 [2022-12-13 17:51:54,543 INFO L226 Difference]: Without dead ends: 162 [2022-12-13 17:51:54,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 123 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=283, Invalid=974, Unknown=7, NotChecked=68, Total=1332 [2022-12-13 17:51:54,544 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 810 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:54,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 491 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 501 Invalid, 0 Unknown, 90 Unchecked, 0.3s Time] [2022-12-13 17:51:54,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-12-13 17:51:54,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 131. [2022-12-13 17:51:54,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 116 states have (on average 1.25) internal successors, (145), 130 states have internal predecessors, (145), 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) [2022-12-13 17:51:54,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 145 transitions. [2022-12-13 17:51:54,547 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 145 transitions. Word has length 65 [2022-12-13 17:51:54,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:54,547 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 145 transitions. [2022-12-13 17:51:54,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 24 states have internal predecessors, (86), 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) [2022-12-13 17:51:54,547 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 145 transitions. [2022-12-13 17:51:54,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 17:51:54,548 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:54,548 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:54,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 17:51:54,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:51:54,749 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:51:54,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:54,750 INFO L85 PathProgramCache]: Analyzing trace with hash -892543400, now seen corresponding path program 1 times [2022-12-13 17:51:54,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:51:54,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729561522] [2022-12-13 17:51:54,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:54,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:51:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:55,301 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 56 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-13 17:51:55,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:51:55,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729561522] [2022-12-13 17:51:55,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729561522] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:51:55,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742301041] [2022-12-13 17:51:55,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:55,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:51:55,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:51:55,303 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:51:55,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:51:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:55,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-13 17:51:55,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:51:55,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-12-13 17:51:55,547 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 17:51:55,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 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 [2022-12-13 17:51:55,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:51:55,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:51:55,641 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 17:51:55,642 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 1 case distinctions, treesize of input 33 treesize of output 34 [2022-12-13 17:51:55,740 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:51:55,741 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 26 treesize of output 20 [2022-12-13 17:51:55,793 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 17:51:55,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:51:56,167 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:51:56,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 32 [2022-12-13 17:51:56,172 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:51:56,172 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 35 treesize of output 33 [2022-12-13 17:51:56,174 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 18 [2022-12-13 17:51:56,186 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-12-13 17:51:56,334 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 17:51:56,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742301041] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:51:56,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:51:56,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 32 [2022-12-13 17:51:56,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092114938] [2022-12-13 17:51:56,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:51:56,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 17:51:56,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:51:56,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 17:51:56,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=902, Unknown=3, NotChecked=0, Total=992 [2022-12-13 17:51:56,336 INFO L87 Difference]: Start difference. First operand 131 states and 145 transitions. Second operand has 32 states, 32 states have (on average 3.1875) internal successors, (102), 32 states have internal predecessors, (102), 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) [2022-12-13 17:51:57,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:57,087 INFO L93 Difference]: Finished difference Result 149 states and 158 transitions. [2022-12-13 17:51:57,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 17:51:57,088 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.1875) internal successors, (102), 32 states have internal predecessors, (102), 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 66 [2022-12-13 17:51:57,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:57,088 INFO L225 Difference]: With dead ends: 149 [2022-12-13 17:51:57,088 INFO L226 Difference]: Without dead ends: 145 [2022-12-13 17:51:57,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=402, Invalid=1947, Unknown=3, NotChecked=0, Total=2352 [2022-12-13 17:51:57,089 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 1126 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:57,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 487 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 17:51:57,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-12-13 17:51:57,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 117. [2022-12-13 17:51:57,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 102 states have (on average 1.2450980392156863) internal successors, (127), 116 states have internal predecessors, (127), 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) [2022-12-13 17:51:57,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 127 transitions. [2022-12-13 17:51:57,091 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 127 transitions. Word has length 66 [2022-12-13 17:51:57,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:57,092 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 127 transitions. [2022-12-13 17:51:57,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.1875) internal successors, (102), 32 states have internal predecessors, (102), 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) [2022-12-13 17:51:57,092 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 127 transitions. [2022-12-13 17:51:57,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 17:51:57,092 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:57,092 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:57,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 17:51:57,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 17:51:57,294 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:51:57,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:57,295 INFO L85 PathProgramCache]: Analyzing trace with hash 8707913, now seen corresponding path program 1 times [2022-12-13 17:51:57,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:51:57,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450962183] [2022-12-13 17:51:57,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:57,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:51:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:57,990 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 32 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 17:51:57,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:51:57,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450962183] [2022-12-13 17:51:57,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450962183] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:51:57,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565534741] [2022-12-13 17:51:57,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:57,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:51:57,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:51:57,991 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:51:57,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 17:51:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:58,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-13 17:51:58,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:51:58,173 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 [2022-12-13 17:51:58,188 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 17:51:58,188 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 [2022-12-13 17:51:58,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:51:58,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:51:58,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:51:58,233 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 16 treesize of output 18 [2022-12-13 17:51:58,275 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 7 [2022-12-13 17:51:58,278 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 17:51:58,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:51:58,473 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:51:58,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 43 [2022-12-13 17:51:58,476 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 36 treesize of output 24 [2022-12-13 17:51:58,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 17:51:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 17:51:58,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565534741] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:51:58,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:51:58,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 15] total 24 [2022-12-13 17:51:58,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119999883] [2022-12-13 17:51:58,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:51:58,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 17:51:58,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:51:58,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 17:51:58,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=476, Unknown=5, NotChecked=0, Total=552 [2022-12-13 17:51:58,536 INFO L87 Difference]: Start difference. First operand 117 states and 127 transitions. Second operand has 24 states, 24 states have (on average 3.8333333333333335) internal successors, (92), 24 states have internal predecessors, (92), 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) [2022-12-13 17:51:58,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:51:58,883 INFO L93 Difference]: Finished difference Result 143 states and 152 transitions. [2022-12-13 17:51:58,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 17:51:58,883 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.8333333333333335) internal successors, (92), 24 states have internal predecessors, (92), 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 67 [2022-12-13 17:51:58,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:51:58,883 INFO L225 Difference]: With dead ends: 143 [2022-12-13 17:51:58,883 INFO L226 Difference]: Without dead ends: 143 [2022-12-13 17:51:58,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=246, Invalid=939, Unknown=5, NotChecked=0, Total=1190 [2022-12-13 17:51:58,884 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 834 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:51:58,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 382 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 17:51:58,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-12-13 17:51:58,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 117. [2022-12-13 17:51:58,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 102 states have (on average 1.2352941176470589) internal successors, (126), 116 states have internal predecessors, (126), 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) [2022-12-13 17:51:58,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 126 transitions. [2022-12-13 17:51:58,886 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 126 transitions. Word has length 67 [2022-12-13 17:51:58,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:51:58,887 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 126 transitions. [2022-12-13 17:51:58,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.8333333333333335) internal successors, (92), 24 states have internal predecessors, (92), 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) [2022-12-13 17:51:58,887 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 126 transitions. [2022-12-13 17:51:58,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 17:51:58,888 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:51:58,888 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:51:58,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 17:51:59,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 17:51:59,090 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:51:59,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:51:59,091 INFO L85 PathProgramCache]: Analyzing trace with hash -221625277, now seen corresponding path program 1 times [2022-12-13 17:51:59,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:51:59,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142002213] [2022-12-13 17:51:59,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:59,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:51:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:51:59,801 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 50 proven. 33 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 17:51:59,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:51:59,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142002213] [2022-12-13 17:51:59,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142002213] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:51:59,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137022564] [2022-12-13 17:51:59,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:51:59,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:51:59,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:51:59,803 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:51:59,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 17:52:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:52:00,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 43 conjunts are in the unsatisfiable core [2022-12-13 17:52:00,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:52:00,024 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 [2022-12-13 17:52:00,036 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 17:52:00,036 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 [2022-12-13 17:52:00,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:52:00,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:52:00,077 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 17:52:00,077 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 1 case distinctions, treesize of input 34 treesize of output 35 [2022-12-13 17:52:00,183 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 25 treesize of output 13 [2022-12-13 17:52:00,186 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 17:52:00,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:52:00,250 INFO L321 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2022-12-13 17:52:00,250 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 21 treesize of output 20 [2022-12-13 17:52:00,254 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2779 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_2779) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) is different from false [2022-12-13 17:52:00,260 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2779 (Array Int Int)) (v_ArrVal_2776 Int)) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 12 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) v_ArrVal_2776)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_2779) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) is different from false [2022-12-13 17:52:00,268 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:52:00,268 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 33 [2022-12-13 17:52:00,270 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 36 treesize of output 24 [2022-12-13 17:52:00,274 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 7 treesize of output 3 [2022-12-13 17:52:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 3 not checked. [2022-12-13 17:52:00,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137022564] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:52:00,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:52:00,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 25 [2022-12-13 17:52:00,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956883890] [2022-12-13 17:52:00,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:52:00,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 17:52:00,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:52:00,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 17:52:00,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=488, Unknown=2, NotChecked=90, Total=650 [2022-12-13 17:52:00,320 INFO L87 Difference]: Start difference. First operand 117 states and 126 transitions. Second operand has 26 states, 25 states have (on average 4.6) internal successors, (115), 26 states have internal predecessors, (115), 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) [2022-12-13 17:52:00,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:52:00,810 INFO L93 Difference]: Finished difference Result 145 states and 154 transitions. [2022-12-13 17:52:00,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 17:52:00,811 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.6) internal successors, (115), 26 states have internal predecessors, (115), 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 69 [2022-12-13 17:52:00,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:52:00,812 INFO L225 Difference]: With dead ends: 145 [2022-12-13 17:52:00,812 INFO L226 Difference]: Without dead ends: 145 [2022-12-13 17:52:00,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=286, Invalid=1052, Unknown=2, NotChecked=142, Total=1482 [2022-12-13 17:52:00,813 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 926 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 246 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:52:00,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 283 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 545 Invalid, 0 Unknown, 246 Unchecked, 0.2s Time] [2022-12-13 17:52:00,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-12-13 17:52:00,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 119. [2022-12-13 17:52:00,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 104 states have (on average 1.2403846153846154) internal successors, (129), 118 states have internal predecessors, (129), 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) [2022-12-13 17:52:00,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2022-12-13 17:52:00,816 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 69 [2022-12-13 17:52:00,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:52:00,817 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 129 transitions. [2022-12-13 17:52:00,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.6) internal successors, (115), 26 states have internal predecessors, (115), 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) [2022-12-13 17:52:00,817 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 129 transitions. [2022-12-13 17:52:00,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 17:52:00,817 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:52:00,817 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:52:00,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 17:52:01,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 17:52:01,019 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:52:01,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:52:01,020 INFO L85 PathProgramCache]: Analyzing trace with hash -221625276, now seen corresponding path program 1 times [2022-12-13 17:52:01,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:52:01,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407238301] [2022-12-13 17:52:01,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:01,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:52:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:52:01,836 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 27 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 17:52:01,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:52:01,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407238301] [2022-12-13 17:52:01,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407238301] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:52:01,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075932041] [2022-12-13 17:52:01,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:01,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:52:01,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:52:01,838 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:52:01,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 17:52:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:52:02,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 59 conjunts are in the unsatisfiable core [2022-12-13 17:52:02,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:52:02,059 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 [2022-12-13 17:52:02,094 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 17:52:02,094 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 [2022-12-13 17:52:02,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:52:02,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:52:02,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:52:02,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:52:02,168 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 17:52:02,168 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 1 case distinctions, treesize of input 54 treesize of output 53 [2022-12-13 17:52:02,172 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 41 [2022-12-13 17:52:02,328 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 19 [2022-12-13 17:52:02,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 14 [2022-12-13 17:52:02,355 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 17:52:02,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:52:02,542 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:52:02,543 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 49 treesize of output 53 [2022-12-13 17:52:02,565 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (and (forall ((v_ArrVal_3159 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_3159) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (forall ((v_ArrVal_3158 (Array Int Int))) (< (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_3158) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 9))) (forall ((v_prenex_1 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0) 4))))) is different from false [2022-12-13 17:52:02,584 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|)) (.cse1 (+ 12 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (.cse2 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (and (forall ((v_prenex_1 (Array Int Int)) (v_ArrVal_3154 Int)) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store .cse0 .cse1 v_ArrVal_3154)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_prenex_1) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2) 4))) (forall ((v_ArrVal_3158 (Array Int Int)) (v_ArrVal_3154 Int)) (< (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store .cse0 .cse1 v_ArrVal_3154)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_3158) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 9))) (forall ((v_ArrVal_3159 (Array Int Int)) (v_ArrVal_3156 Int)) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse1 v_ArrVal_3156)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_3159) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2) |c_ULTIMATE.start_dll_create_~head~0#1.base|)))) is different from false [2022-12-13 17:52:02,594 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:52:02,594 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 35 [2022-12-13 17:52:02,596 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 40 treesize of output 28 [2022-12-13 17:52:02,598 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 9 treesize of output 5 [2022-12-13 17:52:02,606 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-13 17:52:02,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 1 [2022-12-13 17:52:02,609 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-13 17:52:02,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 1 [2022-12-13 17:52:02,739 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 3 not checked. [2022-12-13 17:52:02,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075932041] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:52:02,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:52:02,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 12] total 35 [2022-12-13 17:52:02,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114490414] [2022-12-13 17:52:02,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:52:02,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-13 17:52:02,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:52:02,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-13 17:52:02,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1019, Unknown=2, NotChecked=130, Total=1260 [2022-12-13 17:52:02,742 INFO L87 Difference]: Start difference. First operand 119 states and 129 transitions. Second operand has 36 states, 35 states have (on average 3.8857142857142857) internal successors, (136), 36 states have internal predecessors, (136), 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) [2022-12-13 17:52:04,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:52:04,230 INFO L93 Difference]: Finished difference Result 178 states and 193 transitions. [2022-12-13 17:52:04,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 17:52:04,230 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.8857142857142857) internal successors, (136), 36 states have internal predecessors, (136), 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 69 [2022-12-13 17:52:04,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:52:04,231 INFO L225 Difference]: With dead ends: 178 [2022-12-13 17:52:04,231 INFO L226 Difference]: Without dead ends: 178 [2022-12-13 17:52:04,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=504, Invalid=2052, Unknown=2, NotChecked=198, Total=2756 [2022-12-13 17:52:04,232 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 1586 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 180 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:52:04,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1586 Valid, 418 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 817 Invalid, 0 Unknown, 180 Unchecked, 0.4s Time] [2022-12-13 17:52:04,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-12-13 17:52:04,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 141. [2022-12-13 17:52:04,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 127 states have (on average 1.236220472440945) internal successors, (157), 140 states have internal predecessors, (157), 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) [2022-12-13 17:52:04,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 157 transitions. [2022-12-13 17:52:04,234 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 157 transitions. Word has length 69 [2022-12-13 17:52:04,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:52:04,234 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 157 transitions. [2022-12-13 17:52:04,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.8857142857142857) internal successors, (136), 36 states have internal predecessors, (136), 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) [2022-12-13 17:52:04,235 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 157 transitions. [2022-12-13 17:52:04,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-13 17:52:04,235 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:52:04,235 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:52:04,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 17:52:04,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 17:52:04,437 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:52:04,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:52:04,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1069989460, now seen corresponding path program 1 times [2022-12-13 17:52:04,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:52:04,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407707458] [2022-12-13 17:52:04,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:04,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:52:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:52:04,651 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-12-13 17:52:04,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:52:04,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407707458] [2022-12-13 17:52:04,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407707458] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:52:04,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317709167] [2022-12-13 17:52:04,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:04,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:52:04,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:52:04,652 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:52:04,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 17:52:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:52:04,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 17:52:04,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:52:04,920 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 19 [2022-12-13 17:52:04,922 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 25 treesize of output 13 [2022-12-13 17:52:04,939 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-12-13 17:52:04,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:52:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-12-13 17:52:04,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317709167] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:52:04,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:52:04,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 10 [2022-12-13 17:52:04,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126363578] [2022-12-13 17:52:04,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:52:04,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 17:52:04,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:52:04,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 17:52:04,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:52:04,991 INFO L87 Difference]: Start difference. First operand 141 states and 157 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 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) [2022-12-13 17:52:05,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:52:05,115 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2022-12-13 17:52:05,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 17:52:05,115 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 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 73 [2022-12-13 17:52:05,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:52:05,116 INFO L225 Difference]: With dead ends: 144 [2022-12-13 17:52:05,116 INFO L226 Difference]: Without dead ends: 144 [2022-12-13 17:52:05,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-12-13 17:52:05,117 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 148 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:52:05,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 134 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:52:05,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-12-13 17:52:05,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2022-12-13 17:52:05,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 127 states have (on average 1.220472440944882) internal successors, (155), 140 states have internal predecessors, (155), 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) [2022-12-13 17:52:05,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 155 transitions. [2022-12-13 17:52:05,120 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 155 transitions. Word has length 73 [2022-12-13 17:52:05,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:52:05,121 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 155 transitions. [2022-12-13 17:52:05,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 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) [2022-12-13 17:52:05,121 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 155 transitions. [2022-12-13 17:52:05,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 17:52:05,121 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:52:05,121 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:52:05,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 17:52:05,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:52:05,322 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:52:05,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:52:05,323 INFO L85 PathProgramCache]: Analyzing trace with hash -215880728, now seen corresponding path program 1 times [2022-12-13 17:52:05,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:52:05,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876660863] [2022-12-13 17:52:05,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:05,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:52:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:52:06,543 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 67 proven. 37 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 17:52:06,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:52:06,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876660863] [2022-12-13 17:52:06,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876660863] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:52:06,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899207939] [2022-12-13 17:52:06,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:06,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:52:06,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:52:06,545 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:52:06,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 17:52:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:52:06,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 90 conjunts are in the unsatisfiable core [2022-12-13 17:52:06,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:52:06,804 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 [2022-12-13 17:52:06,822 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 17:52:06,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 17:52:06,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 17:52:06,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:52:06,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 17:52:06,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:52:06,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 17:52:06,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:52:06,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 17:52:06,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:52:06,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 17:52:06,917 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 14 treesize of output 16 [2022-12-13 17:52:06,984 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 17:52:06,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 18 [2022-12-13 17:52:06,996 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 14 treesize of output 16 [2022-12-13 17:52:07,003 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 14 treesize of output 16 [2022-12-13 17:52:07,010 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 14 treesize of output 16 [2022-12-13 17:52:07,018 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 14 treesize of output 16 [2022-12-13 17:52:07,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:52:07,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:52:07,064 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 14 treesize of output 16 [2022-12-13 17:52:07,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:52:07,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:52:07,096 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 17:52:07,096 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 1 case distinctions, treesize of input 79 treesize of output 74 [2022-12-13 17:52:07,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:52:07,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 38 [2022-12-13 17:52:07,105 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 22 treesize of output 24 [2022-12-13 17:52:07,281 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 27 treesize of output 15 [2022-12-13 17:52:07,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2022-12-13 17:52:07,328 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 7 [2022-12-13 17:52:07,331 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 73 proven. 25 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 17:52:07,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:52:07,435 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3929 Int) (v_ArrVal_3925 (Array Int Int))) (= (let ((.cse0 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 12) v_ArrVal_3929)) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_3927) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0)) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_3925) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0))) 0)) is different from false [2022-12-13 17:52:07,445 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3922 Int) (v_ArrVal_3921 Int) (v_ArrVal_3920 (Array Int Int)) (v_ArrVal_3929 Int) (v_ArrVal_3925 (Array Int Int))) (= (let ((.cse1 (+ 12 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (.cse2 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_3920))) (store .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 12) v_ArrVal_3929))) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse1 v_ArrVal_3922)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_3927) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2)) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse1 v_ArrVal_3921)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_3925) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2))) 0)) is different from false [2022-12-13 17:52:07,452 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:52:07,453 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 77 [2022-12-13 17:52:07,455 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 124 treesize of output 112 [2022-12-13 17:52:07,459 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 55 treesize of output 51 [2022-12-13 17:52:07,464 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:52:07,464 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 86 [2022-12-13 17:52:07,467 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 136 treesize of output 118 [2022-12-13 17:52:07,470 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 109 treesize of output 101 [2022-12-13 17:52:13,868 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 52 DAG size of output: 11 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:52:14,018 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_create_~new_head~0#1.base_43| Int) (v_ArrVal_3920 (Array Int Int)) (v_ArrVal_3909 Int) (v_ArrVal_3911 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_dll_create_~new_head~0#1.base_43|) 0)) (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 12 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) v_ArrVal_3909)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_3911) |v_ULTIMATE.start_dll_create_~new_head~0#1.base_43| v_ArrVal_3920) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) 0))) is different from false [2022-12-13 17:52:14,191 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:52:14,191 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 42 [2022-12-13 17:52:14,194 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 60 treesize of output 52 [2022-12-13 17:52:14,197 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 24 treesize of output 22 [2022-12-13 17:52:14,199 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 38 treesize of output 34 [2022-12-13 17:52:14,339 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 72 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 7 not checked. [2022-12-13 17:52:14,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899207939] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:52:14,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:52:14,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 21] total 47 [2022-12-13 17:52:14,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688666804] [2022-12-13 17:52:14,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:52:14,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-13 17:52:14,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:52:14,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-13 17:52:14,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1713, Unknown=6, NotChecked=258, Total=2162 [2022-12-13 17:52:14,342 INFO L87 Difference]: Start difference. First operand 141 states and 155 transitions. Second operand has 47 states, 47 states have (on average 3.425531914893617) internal successors, (161), 47 states have internal predecessors, (161), 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) [2022-12-13 17:52:18,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:52:18,640 INFO L93 Difference]: Finished difference Result 172 states and 186 transitions. [2022-12-13 17:52:18,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 17:52:18,640 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.425531914893617) internal successors, (161), 47 states have internal predecessors, (161), 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 77 [2022-12-13 17:52:18,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:52:18,641 INFO L225 Difference]: With dead ends: 172 [2022-12-13 17:52:18,641 INFO L226 Difference]: Without dead ends: 172 [2022-12-13 17:52:18,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 136 SyntacticMatches, 6 SemanticMatches, 64 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 971 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=680, Invalid=3232, Unknown=6, NotChecked=372, Total=4290 [2022-12-13 17:52:18,642 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 1228 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 368 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:52:18,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 963 Invalid, 1634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1230 Invalid, 0 Unknown, 368 Unchecked, 0.8s Time] [2022-12-13 17:52:18,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-12-13 17:52:18,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 141. [2022-12-13 17:52:18,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 127 states have (on average 1.2125984251968505) internal successors, (154), 140 states have internal predecessors, (154), 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) [2022-12-13 17:52:18,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 154 transitions. [2022-12-13 17:52:18,644 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 154 transitions. Word has length 77 [2022-12-13 17:52:18,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:52:18,645 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 154 transitions. [2022-12-13 17:52:18,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.425531914893617) internal successors, (161), 47 states have internal predecessors, (161), 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) [2022-12-13 17:52:18,645 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 154 transitions. [2022-12-13 17:52:18,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 17:52:18,645 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:52:18,646 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:52:18,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 17:52:18,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 17:52:18,847 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:52:18,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:52:18,848 INFO L85 PathProgramCache]: Analyzing trace with hash 323840077, now seen corresponding path program 1 times [2022-12-13 17:52:18,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:52:18,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79858552] [2022-12-13 17:52:18,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:18,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:52:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:52:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 65 proven. 41 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 17:52:20,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:52:20,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79858552] [2022-12-13 17:52:20,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79858552] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:52:20,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807078479] [2022-12-13 17:52:20,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:20,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:52:20,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:52:20,313 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:52:20,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 17:52:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:52:20,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 86 conjunts are in the unsatisfiable core [2022-12-13 17:52:20,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:52:20,542 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 [2022-12-13 17:52:20,581 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 17:52:20,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 17:52:20,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:52:20,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:52:20,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:52:20,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:52:20,782 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 16 treesize of output 18 [2022-12-13 17:52:20,907 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 17:52:20,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 18 [2022-12-13 17:52:20,928 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 14 treesize of output 16 [2022-12-13 17:52:20,938 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 14 treesize of output 16 [2022-12-13 17:52:20,949 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 14 treesize of output 16 [2022-12-13 17:52:20,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:52:20,967 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 14 treesize of output 16 [2022-12-13 17:52:20,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:52:21,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:52:21,042 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 14 treesize of output 16 [2022-12-13 17:52:21,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:52:21,083 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 17:52:21,083 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 1 case distinctions, treesize of input 79 treesize of output 74 [2022-12-13 17:52:21,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:52:21,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 38 [2022-12-13 17:52:21,092 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 22 treesize of output 24 [2022-12-13 17:52:21,419 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:52:21,420 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 15 [2022-12-13 17:52:21,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:52:21,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-13 17:52:21,478 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 7 [2022-12-13 17:52:21,484 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 71 proven. 29 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 17:52:21,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:52:22,114 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~head~1#1.offset_44| Int) (v_ArrVal_4323 (Array Int Int)) (v_ArrVal_4325 Int) (v_ArrVal_4326 (Array Int Int)) (v_ArrVal_4321 Int) (v_ArrVal_4327 (Array Int Int)) (v_ArrVal_4322 Int)) (or (< |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| |v_ULTIMATE.start_main_~head~1#1.offset_44|) (not (<= 0 |v_ULTIMATE.start_main_~head~1#1.offset_44|)) (= (let ((.cse1 (+ 12 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (.cse2 (+ |v_ULTIMATE.start_main_~head~1#1.offset_44| 4))) (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_4323))) (store .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 12) v_ArrVal_4325))) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse1 v_ArrVal_4322)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_4326) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2)) (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse1 v_ArrVal_4321)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_4327) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse2) 8))) 0))) is different from false [2022-12-13 17:52:22,132 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:52:22,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 79 [2022-12-13 17:52:22,145 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:52:22,145 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 128 treesize of output 124 [2022-12-13 17:52:22,152 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 57 treesize of output 53 [2022-12-13 17:52:22,163 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:52:22,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 98 [2022-12-13 17:52:22,177 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:52:22,177 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 160 treesize of output 150 [2022-12-13 17:52:22,184 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 138 treesize of output 130 [2022-12-13 17:52:33,763 WARN L233 SmtUtils]: Spent 10.42s on a formula simplification. DAG size of input: 94 DAG size of output: 51 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:52:33,934 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:52:33,935 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 17:52:35,118 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:52:35,118 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 248 treesize of output 138 [2022-12-13 17:52:35,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:52:35,137 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:52:35,137 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 953 treesize of output 927 [2022-12-13 17:52:35,175 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:52:35,175 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 689 treesize of output 609 [2022-12-13 17:52:35,196 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:52:35,196 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 579 treesize of output 555 [2022-12-13 17:52:35,217 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 8 treesize of output 4 [2022-12-13 17:52:35,401 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:52:35,401 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 136 treesize of output 128 [2022-12-13 17:52:35,750 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 71 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 2 not checked. [2022-12-13 17:52:35,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807078479] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:52:35,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:52:35,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 24] total 52 [2022-12-13 17:52:35,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511986615] [2022-12-13 17:52:35,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:52:35,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-12-13 17:52:35,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:52:35,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-12-13 17:52:35,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2315, Unknown=27, NotChecked=98, Total=2652 [2022-12-13 17:52:35,753 INFO L87 Difference]: Start difference. First operand 141 states and 154 transitions. Second operand has 52 states, 52 states have (on average 3.269230769230769) internal successors, (170), 52 states have internal predecessors, (170), 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) [2022-12-13 17:52:41,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:52:41,673 INFO L93 Difference]: Finished difference Result 172 states and 185 transitions. [2022-12-13 17:52:41,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 17:52:41,673 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.269230769230769) internal successors, (170), 52 states have internal predecessors, (170), 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 79 [2022-12-13 17:52:41,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:52:41,674 INFO L225 Difference]: With dead ends: 172 [2022-12-13 17:52:41,674 INFO L226 Difference]: Without dead ends: 172 [2022-12-13 17:52:41,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=870, Invalid=4508, Unknown=28, NotChecked=144, Total=5550 [2022-12-13 17:52:41,675 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 1068 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 33 mSolverCounterUnsat, 30 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 30 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:52:41,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1068 Valid, 1016 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1282 Invalid, 30 Unknown, 122 Unchecked, 1.4s Time] [2022-12-13 17:52:41,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-12-13 17:52:41,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 141. [2022-12-13 17:52:41,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 127 states have (on average 1.204724409448819) internal successors, (153), 140 states have internal predecessors, (153), 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) [2022-12-13 17:52:41,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 153 transitions. [2022-12-13 17:52:41,677 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 153 transitions. Word has length 79 [2022-12-13 17:52:41,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:52:41,677 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 153 transitions. [2022-12-13 17:52:41,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.269230769230769) internal successors, (170), 52 states have internal predecessors, (170), 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) [2022-12-13 17:52:41,677 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 153 transitions. [2022-12-13 17:52:41,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 17:52:41,678 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:52:41,678 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:52:41,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 17:52:41,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:52:41,879 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:52:41,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:52:41,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1110523695, now seen corresponding path program 1 times [2022-12-13 17:52:41,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:52:41,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104674422] [2022-12-13 17:52:41,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:41,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:52:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:52:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 17:52:43,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:52:43,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104674422] [2022-12-13 17:52:43,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104674422] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:52:43,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231514659] [2022-12-13 17:52:43,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:52:43,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:52:43,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:52:43,214 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:52:43,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 17:52:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:52:43,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 77 conjunts are in the unsatisfiable core [2022-12-13 17:52:43,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:52:43,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-12-13 17:52:43,531 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 17:52:43,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 17:52:43,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:52:43,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:52:43,713 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 17:52:43,713 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 1 case distinctions, treesize of input 44 treesize of output 43 [2022-12-13 17:52:43,821 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-12-13 17:52:43,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 17:52:43,882 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 31 treesize of output 29 [2022-12-13 17:52:43,900 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 31 treesize of output 29 [2022-12-13 17:52:43,918 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 31 treesize of output 29 [2022-12-13 17:52:43,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:52:43,945 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 38 treesize of output 29 [2022-12-13 17:52:44,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:52:44,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:52:44,028 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 17:52:44,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 41 [2022-12-13 17:52:44,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:52:44,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:52:44,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:52:44,066 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:52:44,068 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 17:52:44,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 53 [2022-12-13 17:52:44,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:52:44,076 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 43 treesize of output 43 [2022-12-13 17:52:44,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:52:44,489 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 20 [2022-12-13 17:52:44,650 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:52:44,666 INFO L321 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2022-12-13 17:52:44,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 35 [2022-12-13 17:52:44,707 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 60 proven. 32 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 17:52:44,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:52:45,463 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:52:45,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 120 treesize of output 126 [2022-12-13 17:52:45,476 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:52:45,476 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 223 treesize of output 219 [2022-12-13 17:52:45,482 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 206 treesize of output 202 [2022-12-13 17:52:55,179 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 57 DAG size of output: 52 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:52:55,202 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:52:55,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 65 [2022-12-13 17:52:55,222 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:52:55,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 65 [2022-12-13 17:52:55,244 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:52:55,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 65 [2022-12-13 17:53:03,604 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:53:03,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:53:03,812 INFO L321 Elim1Store]: treesize reduction 35, result has 53.3 percent of original size [2022-12-13 17:53:03,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 93 [2022-12-13 17:53:03,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:53:03,873 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:53:03,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 56 treesize of output 60 [2022-12-13 17:53:10,871 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:53:11,409 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:53:11,409 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 120 treesize of output 81 [2022-12-13 17:53:11,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:53:11,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:53:11,423 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:53:11,424 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 1285 treesize of output 1175 [2022-12-13 17:53:11,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:53:11,445 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:53:11,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 1173 treesize of output 763 [2022-12-13 17:53:11,462 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 246 treesize of output 214 [2022-12-13 17:53:11,937 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 60 proven. 32 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 17:53:11,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231514659] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:53:11,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:53:11,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 21] total 55 [2022-12-13 17:53:11,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109061610] [2022-12-13 17:53:11,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:53:11,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-12-13 17:53:11,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:53:11,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-12-13 17:53:11,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2754, Unknown=41, NotChecked=0, Total=2970 [2022-12-13 17:53:11,939 INFO L87 Difference]: Start difference. First operand 141 states and 153 transitions. Second operand has 55 states, 55 states have (on average 3.309090909090909) internal successors, (182), 55 states have internal predecessors, (182), 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) [2022-12-13 17:53:17,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:53:17,797 INFO L93 Difference]: Finished difference Result 155 states and 164 transitions. [2022-12-13 17:53:17,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 17:53:17,798 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.309090909090909) internal successors, (182), 55 states have internal predecessors, (182), 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 80 [2022-12-13 17:53:17,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:53:17,798 INFO L225 Difference]: With dead ends: 155 [2022-12-13 17:53:17,798 INFO L226 Difference]: Without dead ends: 155 [2022-12-13 17:53:17,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 30.7s TimeCoverageRelationStatistics Valid=896, Invalid=5543, Unknown=41, NotChecked=0, Total=6480 [2022-12-13 17:53:17,800 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 1756 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 1947 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 1998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:53:17,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1756 Valid, 1419 Invalid, 1998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1947 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 17:53:17,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-12-13 17:53:17,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 127. [2022-12-13 17:53:17,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 113 states have (on average 1.1946902654867257) internal successors, (135), 126 states have internal predecessors, (135), 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) [2022-12-13 17:53:17,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 135 transitions. [2022-12-13 17:53:17,802 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 135 transitions. Word has length 80 [2022-12-13 17:53:17,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:53:17,802 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 135 transitions. [2022-12-13 17:53:17,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.309090909090909) internal successors, (182), 55 states have internal predecessors, (182), 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) [2022-12-13 17:53:17,802 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 135 transitions. [2022-12-13 17:53:17,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-13 17:53:17,802 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:53:17,802 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:53:17,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 17:53:18,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:53:18,003 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:53:18,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:18,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1974245714, now seen corresponding path program 1 times [2022-12-13 17:53:18,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:18,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411820649] [2022-12-13 17:53:18,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:18,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:19,727 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 17:53:19,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:53:19,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411820649] [2022-12-13 17:53:19,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411820649] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:53:19,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796934250] [2022-12-13 17:53:19,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:19,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:53:19,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:53:19,728 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:53:19,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 17:53:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:53:19,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 82 conjunts are in the unsatisfiable core [2022-12-13 17:53:19,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:53:19,983 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 [2022-12-13 17:53:20,003 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 [2022-12-13 17:53:20,021 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 17:53:20,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 17:53:20,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:53:20,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:53:20,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:53:20,193 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 16 treesize of output 18 [2022-12-13 17:53:20,294 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 17:53:20,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 18 [2022-12-13 17:53:20,303 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 [2022-12-13 17:53:20,356 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 14 treesize of output 16 [2022-12-13 17:53:20,368 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 14 treesize of output 16 [2022-12-13 17:53:20,381 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 14 treesize of output 16 [2022-12-13 17:53:20,392 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 14 treesize of output 16 [2022-12-13 17:53:20,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:53:20,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:53:20,454 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 14 treesize of output 16 [2022-12-13 17:53:20,487 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 17:53:20,488 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 1 case distinctions, treesize of input 72 treesize of output 67 [2022-12-13 17:53:20,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:53:20,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 32 [2022-12-13 17:53:20,765 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 36 treesize of output 20 [2022-12-13 17:53:20,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-13 17:53:20,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:53:20,907 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-12-13 17:53:20,912 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 70 proven. 32 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 17:53:20,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:53:21,257 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 52 treesize of output 34 [2022-12-13 17:53:21,764 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:53:21,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 72 [2022-12-13 17:53:21,768 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 116 treesize of output 98 [2022-12-13 17:53:21,774 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 64 treesize of output 56 [2022-12-13 17:53:26,167 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:53:26,167 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 17:53:36,883 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_create_~new_head~0#1.base_52| Int) (v_ArrVal_5095 Int) (v_ArrVal_5094 Int) (|v_ULTIMATE.start_dll_create_~head~0#1.offset_40| Int) (v_ArrVal_5109 Int) (v_arrayElimCell_188 Int) (v_ArrVal_5108 (Array Int Int)) (v_ArrVal_5097 (Array Int Int)) (v_ArrVal_5099 Int) (v_arrayElimCell_190 Int)) (let ((.cse0 (store (store (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4) v_ArrVal_5094) (+ 12 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) v_ArrVal_5095)) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_5097) |v_ULTIMATE.start_dll_create_~new_head~0#1.base_52| v_ArrVal_5108))) (let ((.cse1 (store (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |v_ULTIMATE.start_dll_create_~head~0#1.offset_40| 12) v_ArrVal_5109)) (.cse2 (+ 16 v_arrayElimCell_188))) (or (not (<= 0 v_arrayElimCell_188)) (not (= (select |c_#valid| |v_ULTIMATE.start_dll_create_~new_head~0#1.base_52|) 0)) (= (select (select (store .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse1) v_arrayElimCell_190) .cse2) 0) (not (<= |v_ULTIMATE.start_dll_create_~head~0#1.offset_40| |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (not (<= (+ v_arrayElimCell_188 20) (select (store |c_#length| |v_ULTIMATE.start_dll_create_~new_head~0#1.base_52| v_ArrVal_5099) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))) (= (select .cse1 .cse2) 0))))) is different from false [2022-12-13 17:53:36,905 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:53:36,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 112 treesize of output 82 [2022-12-13 17:53:36,935 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:53:36,935 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 5289 treesize of output 5163 [2022-12-13 17:53:36,968 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 5963 treesize of output 5435 [2022-12-13 17:53:37,007 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 5843 treesize of output 5579 [2022-12-13 17:53:38,589 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:53:38,590 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 104 treesize of output 96 [2022-12-13 17:53:54,515 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 68 proven. 31 refuted. 1 times theorem prover too weak. 11 trivial. 2 not checked. [2022-12-13 17:53:54,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796934250] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:53:54,516 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:53:54,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 24] total 55 [2022-12-13 17:53:54,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080515480] [2022-12-13 17:53:54,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:53:54,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-12-13 17:53:54,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:53:54,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-12-13 17:53:54,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2648, Unknown=16, NotChecked=104, Total=2970 [2022-12-13 17:53:54,517 INFO L87 Difference]: Start difference. First operand 127 states and 135 transitions. Second operand has 55 states, 55 states have (on average 3.4) internal successors, (187), 55 states have internal predecessors, (187), 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) [2022-12-13 17:53:59,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:53:59,660 INFO L93 Difference]: Finished difference Result 153 states and 162 transitions. [2022-12-13 17:53:59,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 17:53:59,661 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.4) internal successors, (187), 55 states have internal predecessors, (187), 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 81 [2022-12-13 17:53:59,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:53:59,661 INFO L225 Difference]: With dead ends: 153 [2022-12-13 17:53:59,661 INFO L226 Difference]: Without dead ends: 153 [2022-12-13 17:53:59,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1394 ImplicationChecksByTransitivity, 35.0s TimeCoverageRelationStatistics Valid=922, Invalid=5386, Unknown=16, NotChecked=156, Total=6480 [2022-12-13 17:53:59,663 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 1196 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:53:59,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1196 Valid, 746 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1498 Invalid, 0 Unknown, 136 Unchecked, 1.8s Time] [2022-12-13 17:53:59,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-12-13 17:53:59,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 129. [2022-12-13 17:53:59,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 115 states have (on average 1.191304347826087) internal successors, (137), 128 states have internal predecessors, (137), 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) [2022-12-13 17:53:59,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 137 transitions. [2022-12-13 17:53:59,665 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 137 transitions. Word has length 81 [2022-12-13 17:53:59,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:53:59,665 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 137 transitions. [2022-12-13 17:53:59,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.4) internal successors, (187), 55 states have internal predecessors, (187), 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) [2022-12-13 17:53:59,665 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 137 transitions. [2022-12-13 17:53:59,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-13 17:53:59,666 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:53:59,666 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:53:59,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-13 17:53:59,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:53:59,867 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2022-12-13 17:53:59,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:53:59,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1125408756, now seen corresponding path program 2 times [2022-12-13 17:53:59,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:53:59,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450199512] [2022-12-13 17:53:59,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:53:59,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:53:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:54:01,335 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 64 proven. 48 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 17:54:01,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:54:01,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450199512] [2022-12-13 17:54:01,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450199512] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:54:01,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119465842] [2022-12-13 17:54:01,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:54:01,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:54:01,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:54:01,336 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:54:01,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2f0d146-aec1-41c2-829e-6c139ce27948/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 17:54:01,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:54:01,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:54:01,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 80 conjunts are in the unsatisfiable core [2022-12-13 17:54:01,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:54:01,569 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 [2022-12-13 17:54:01,590 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 [2022-12-13 17:54:01,605 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 17:54:01,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 17:54:01,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 17:54:01,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 17:54:01,778 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 17:54:01,779 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 1 case distinctions, treesize of input 34 treesize of output 35 [2022-12-13 17:54:01,893 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-12-13 17:54:01,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2022-12-13 17:54:01,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-12-13 17:54:01,997 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 32 treesize of output 30 [2022-12-13 17:54:02,020 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 32 treesize of output 30 [2022-12-13 17:54:02,040 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 32 treesize of output 30 [2022-12-13 17:54:02,062 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 39 treesize of output 30 [2022-12-13 17:54:02,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:54:02,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:54:02,147 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 17:54:02,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 42 [2022-12-13 17:54:02,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:54:02,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 17:54:02,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:54:02,187 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 17:54:02,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 52 [2022-12-13 17:54:02,593 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 7 treesize of output 3 [2022-12-13 17:54:02,912 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-12-13 17:54:03,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:54:03,034 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-12-13 17:54:03,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 32 [2022-12-13 17:54:03,135 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 70 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 17:54:03,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:54:03,489 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 54 treesize of output 36 [2022-12-13 17:54:10,225 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:54:10,225 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 140 treesize of output 96 [2022-12-13 17:54:11,842 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:54:11,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 190 treesize of output 120 [2022-12-13 17:54:11,852 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 17:54:11,927 INFO L321 Elim1Store]: treesize reduction 32, result has 67.0 percent of original size [2022-12-13 17:54:11,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 7348 treesize of output 6931 [2022-12-13 17:54:12,022 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:54:12,023 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 7461 treesize of output 6897 [2022-12-13 17:54:12,282 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 17:54:12,283 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 6261 treesize of output 6121