./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/verifythis/lcp.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/verifythis/lcp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1e47fbc54bff4eeebe072cdb8acf7cfe734a91f148fd421ae1769ba3b81a6f5a --- 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 [2022-12-14 10:18:40,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:18:40,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:18:40,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:18:40,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:18:40,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:18:40,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:18:40,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:18:40,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:18:40,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:18:40,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:18:40,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:18:40,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:18:40,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:18:40,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:18:40,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:18:40,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:18:40,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:18:40,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:18:40,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:18:40,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:18:40,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:18:40,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:18:40,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:18:40,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:18:40,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:18:40,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:18:40,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:18:40,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:18:40,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:18:40,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:18:40,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:18:40,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:18:40,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:18:40,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:18:40,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:18:40,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:18:40,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:18:40,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:18:40,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:18:40,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:18:40,097 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 10:18:40,111 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:18:40,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:18:40,112 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:18:40,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:18:40,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:18:40,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:18:40,113 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:18:40,113 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:18:40,113 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:18:40,113 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:18:40,113 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:18:40,113 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:18:40,113 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:18:40,114 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:18:40,114 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:18:40,114 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:18:40,114 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:18:40,114 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:18:40,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 10:18:40,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 10:18:40,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:18:40,115 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:18:40,115 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:18:40,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:18:40,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:18:40,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:18:40,116 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 10:18:40,116 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 10:18:40,116 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 10:18:40,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:18:40,117 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:18:40,117 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:18:40,117 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:18:40,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:18:40,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:18:40,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:18:40,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:18:40,118 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:18:40,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:18:40,118 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:18:40,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:18:40,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:18:40,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e47fbc54bff4eeebe072cdb8acf7cfe734a91f148fd421ae1769ba3b81a6f5a [2022-12-14 10:18:40,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:18:40,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:18:40,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:18:40,316 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:18:40,316 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:18:40,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/verifythis/lcp.c [2022-12-14 10:18:42,840 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:18:43,013 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:18:43,013 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/sv-benchmarks/c/verifythis/lcp.c [2022-12-14 10:18:43,018 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/data/65b9dd6ac/2dc3787eb14346029ed641a0cd6024eb/FLAG597db1b7f [2022-12-14 10:18:43,427 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/data/65b9dd6ac/2dc3787eb14346029ed641a0cd6024eb [2022-12-14 10:18:43,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:18:43,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:18:43,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:18:43,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:18:43,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:18:43,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:18:43" (1/1) ... [2022-12-14 10:18:43,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69b5525c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:43, skipping insertion in model container [2022-12-14 10:18:43,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:18:43" (1/1) ... [2022-12-14 10:18:43,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:18:43,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:18:43,557 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_7428e32b-1514-41de-b87b-8b4bd09ea0bf/sv-benchmarks/c/verifythis/lcp.c[515,528] [2022-12-14 10:18:43,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:18:43,578 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:18:43,587 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_7428e32b-1514-41de-b87b-8b4bd09ea0bf/sv-benchmarks/c/verifythis/lcp.c[515,528] [2022-12-14 10:18:43,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:18:43,602 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:18:43,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:43 WrapperNode [2022-12-14 10:18:43,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:18:43,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:18:43,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:18:43,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:18:43,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:43" (1/1) ... [2022-12-14 10:18:43,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:43" (1/1) ... [2022-12-14 10:18:43,629 INFO L138 Inliner]: procedures = 20, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 87 [2022-12-14 10:18:43,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:18:43,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:18:43,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:18:43,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:18:43,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:43" (1/1) ... [2022-12-14 10:18:43,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:43" (1/1) ... [2022-12-14 10:18:43,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:43" (1/1) ... [2022-12-14 10:18:43,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:43" (1/1) ... [2022-12-14 10:18:43,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:43" (1/1) ... [2022-12-14 10:18:43,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:43" (1/1) ... [2022-12-14 10:18:43,645 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:43" (1/1) ... [2022-12-14 10:18:43,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:43" (1/1) ... [2022-12-14 10:18:43,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:18:43,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:18:43,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:18:43,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:18:43,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:43" (1/1) ... [2022-12-14 10:18:43,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:18:43,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:18:43,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:18:43,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:18:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:18:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 10:18:43,704 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 10:18:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:18:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:18:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:18:43,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:18:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:18:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 10:18:43,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 10:18:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:18:43,770 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:18:43,771 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:18:43,934 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:18:43,971 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:18:43,971 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 10:18:43,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:18:43 BoogieIcfgContainer [2022-12-14 10:18:43,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:18:43,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:18:43,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:18:43,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:18:43,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:18:43" (1/3) ... [2022-12-14 10:18:43,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f2b536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:18:43, skipping insertion in model container [2022-12-14 10:18:43,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:18:43" (2/3) ... [2022-12-14 10:18:43,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f2b536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:18:43, skipping insertion in model container [2022-12-14 10:18:43,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:18:43" (3/3) ... [2022-12-14 10:18:43,983 INFO L112 eAbstractionObserver]: Analyzing ICFG lcp.c [2022-12-14 10:18:43,998 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:18:43,998 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2022-12-14 10:18:44,032 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:18:44,039 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7b5b7d01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:18:44,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-14 10:18:44,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 43 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 10:18:44,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 10:18:44,049 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:44,050 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:44,050 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 10:18:44,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:44,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1329151309, now seen corresponding path program 1 times [2022-12-14 10:18:44,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:44,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861297455] [2022-12-14 10:18:44,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:44,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:44,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:18:44,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:44,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861297455] [2022-12-14 10:18:44,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861297455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:44,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:44,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:18:44,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530091808] [2022-12-14 10:18:44,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:44,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:18:44,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:44,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:18:44,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:18:44,363 INFO L87 Difference]: Start difference. First operand has 51 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 43 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:18:44,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:44,456 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2022-12-14 10:18:44,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:18:44,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2022-12-14 10:18:44,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:44,465 INFO L225 Difference]: With dead ends: 48 [2022-12-14 10:18:44,465 INFO L226 Difference]: Without dead ends: 47 [2022-12-14 10:18:44,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:18:44,470 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 61 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:44,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 46 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:18:44,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-12-14 10:18:44,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-12-14 10:18:44,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 39 states have internal predecessors, (42), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 10:18:44,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2022-12-14 10:18:44,501 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 12 [2022-12-14 10:18:44,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:44,503 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2022-12-14 10:18:44,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:18:44,503 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2022-12-14 10:18:44,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 10:18:44,504 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:44,504 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:44,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:18:44,504 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 10:18:44,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:44,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1329151308, now seen corresponding path program 1 times [2022-12-14 10:18:44,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:44,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279562326] [2022-12-14 10:18:44,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:44,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:18:44,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:44,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279562326] [2022-12-14 10:18:44,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279562326] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:44,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:44,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 10:18:44,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566298472] [2022-12-14 10:18:44,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:44,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 10:18:44,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:44,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 10:18:44,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:18:44,858 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 9 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:18:45,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:45,157 INFO L93 Difference]: Finished difference Result 105 states and 119 transitions. [2022-12-14 10:18:45,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 10:18:45,158 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2022-12-14 10:18:45,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:45,159 INFO L225 Difference]: With dead ends: 105 [2022-12-14 10:18:45,159 INFO L226 Difference]: Without dead ends: 105 [2022-12-14 10:18:45,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-12-14 10:18:45,161 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 129 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:45,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 165 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:18:45,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-12-14 10:18:45,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 49. [2022-12-14 10:18:45,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 41 states have internal predecessors, (45), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 10:18:45,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2022-12-14 10:18:45,170 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 12 [2022-12-14 10:18:45,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:45,170 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2022-12-14 10:18:45,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:18:45,171 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2022-12-14 10:18:45,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 10:18:45,171 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:45,171 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:45,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:18:45,172 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 10:18:45,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:45,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1745982372, now seen corresponding path program 1 times [2022-12-14 10:18:45,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:45,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891985322] [2022-12-14 10:18:45,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:45,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:45,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:18:45,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:45,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891985322] [2022-12-14 10:18:45,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891985322] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:45,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:45,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 10:18:45,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77057037] [2022-12-14 10:18:45,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:45,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 10:18:45,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:45,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 10:18:45,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-14 10:18:45,551 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 10 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 8 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:18:46,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:46,042 INFO L93 Difference]: Finished difference Result 104 states and 118 transitions. [2022-12-14 10:18:46,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 10:18:46,042 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 8 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2022-12-14 10:18:46,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:46,043 INFO L225 Difference]: With dead ends: 104 [2022-12-14 10:18:46,044 INFO L226 Difference]: Without dead ends: 104 [2022-12-14 10:18:46,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-12-14 10:18:46,044 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 163 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:46,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 196 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:18:46,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-12-14 10:18:46,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 50. [2022-12-14 10:18:46,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 30 states have (on average 1.5333333333333334) internal successors, (46), 42 states have internal predecessors, (46), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 10:18:46,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2022-12-14 10:18:46,049 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 13 [2022-12-14 10:18:46,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:46,049 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2022-12-14 10:18:46,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 8 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:18:46,049 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2022-12-14 10:18:46,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 10:18:46,050 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:46,050 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:46,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 10:18:46,050 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 10:18:46,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:46,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1434432615, now seen corresponding path program 1 times [2022-12-14 10:18:46,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:46,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663593879] [2022-12-14 10:18:46,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:46,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:46,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:18:46,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:46,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663593879] [2022-12-14 10:18:46,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663593879] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:46,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:46,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:18:46,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005717354] [2022-12-14 10:18:46,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:46,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:18:46,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:46,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:18:46,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:18:46,069 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 10:18:46,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:46,084 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2022-12-14 10:18:46,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:18:46,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2022-12-14 10:18:46,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:46,085 INFO L225 Difference]: With dead ends: 51 [2022-12-14 10:18:46,085 INFO L226 Difference]: Without dead ends: 51 [2022-12-14 10:18:46,086 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 [2022-12-14 10:18:46,087 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:46,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:18:46,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-12-14 10:18:46,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-12-14 10:18:46,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 43 states have internal predecessors, (47), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 10:18:46,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-12-14 10:18:46,090 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 15 [2022-12-14 10:18:46,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:46,091 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-12-14 10:18:46,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 10:18:46,091 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-12-14 10:18:46,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 10:18:46,091 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:46,091 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:46,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 10:18:46,092 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 10:18:46,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:46,092 INFO L85 PathProgramCache]: Analyzing trace with hash 220258277, now seen corresponding path program 1 times [2022-12-14 10:18:46,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:46,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951880717] [2022-12-14 10:18:46,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:46,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 10:18:46,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:46,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951880717] [2022-12-14 10:18:46,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951880717] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:46,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:46,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:18:46,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517760309] [2022-12-14 10:18:46,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:46,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:18:46,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:46,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:18:46,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:18:46,131 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:18:46,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:46,176 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2022-12-14 10:18:46,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:18:46,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 17 [2022-12-14 10:18:46,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:46,177 INFO L225 Difference]: With dead ends: 47 [2022-12-14 10:18:46,178 INFO L226 Difference]: Without dead ends: 47 [2022-12-14 10:18:46,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:18:46,179 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 39 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:46,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 50 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:18:46,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-12-14 10:18:46,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-12-14 10:18:46,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 39 states have internal predecessors, (43), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 10:18:46,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2022-12-14 10:18:46,184 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 17 [2022-12-14 10:18:46,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:46,184 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2022-12-14 10:18:46,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:18:46,185 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2022-12-14 10:18:46,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 10:18:46,185 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:46,185 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:46,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 10:18:46,185 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 10:18:46,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:46,186 INFO L85 PathProgramCache]: Analyzing trace with hash 220258278, now seen corresponding path program 1 times [2022-12-14 10:18:46,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:46,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366368146] [2022-12-14 10:18:46,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:46,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 10:18:46,248 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:46,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366368146] [2022-12-14 10:18:46,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366368146] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:18:46,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:18:46,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:18:46,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674662323] [2022-12-14 10:18:46,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:18:46,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:18:46,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:46,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:18:46,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:18:46,250 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 5 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 10:18:46,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:46,296 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2022-12-14 10:18:46,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:18:46,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2022-12-14 10:18:46,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:46,297 INFO L225 Difference]: With dead ends: 51 [2022-12-14 10:18:46,297 INFO L226 Difference]: Without dead ends: 48 [2022-12-14 10:18:46,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:18:46,298 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:46,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 130 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:18:46,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-12-14 10:18:46,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-12-14 10:18:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.34375) internal successors, (43), 40 states have internal predecessors, (43), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 10:18:46,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2022-12-14 10:18:46,302 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 17 [2022-12-14 10:18:46,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:46,302 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2022-12-14 10:18:46,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 10:18:46,302 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2022-12-14 10:18:46,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 10:18:46,303 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:46,303 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:46,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 10:18:46,303 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 10:18:46,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:46,303 INFO L85 PathProgramCache]: Analyzing trace with hash 478063812, now seen corresponding path program 1 times [2022-12-14 10:18:46,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:46,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121436099] [2022-12-14 10:18:46,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:46,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:46,512 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:18:46,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:46,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121436099] [2022-12-14 10:18:46,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121436099] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:18:46,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936810519] [2022-12-14 10:18:46,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:46,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:18:46,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:18:46,514 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:18:46,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:18:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:46,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 10:18:46,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:18:46,647 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 [2022-12-14 10:18:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:18:46,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:18:47,257 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:18:47,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936810519] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:18:47,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [749766337] [2022-12-14 10:18:47,272 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 10:18:47,272 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:18:47,276 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:18:47,280 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:18:47,280 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:18:47,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:47,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:47,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:47,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 10:18:47,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:47,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:47,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 57 [2022-12-14 10:18:47,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:47,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:47,445 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:18:47,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:18:47,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:47,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:47,499 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:18:47,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:18:48,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:48,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:48,161 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:18:48,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:18:48,184 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 124 for LOIs [2022-12-14 10:18:48,226 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:18:50,894 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '931#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483648)) |ULTIMATE.start_lcp_#t~short7#1| (= |ULTIMATE.start_#Ultimate.meminit_#sizeOfFields#1| 4) (<= |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934588) (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= 0 (+ 2147483648 |ULTIMATE.start_lcp_~y#1|)) (<= |ULTIMATE.start_lcp_#in~a#1.offset| 0) (<= 0 (+ |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934592)) (<= 0 (+ |ULTIMATE.start_lcp_#in~x#1| 2147483648)) (<= 0 |ULTIMATE.start_lcp_~l~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483647) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_lcp_#in~n#1| 2147483648)) (<= 0 |ULTIMATE.start_lcp_#in~a#1.offset|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= 0 |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset|) (<= 0 (+ |ULTIMATE.start_lcp_#in~y#1| 2147483648)) (<= |ULTIMATE.start_lcp_#in~y#1| 2147483647) (<= |ULTIMATE.start_lcp_~a#1.offset| 0) (<= |ULTIMATE.start_lcp_~n#1| 2147483647) (<= |ULTIMATE.start_main_#t~malloc15#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)) (<= 0 |ULTIMATE.start_lcp_~a#1.offset|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (or (not (<= 0 (+ (* 4 |ULTIMATE.start_lcp_~x#1|) |ULTIMATE.start_lcp_~a#1.offset| (* |ULTIMATE.start_lcp_~l~0#1| 4)))) (not (<= (+ (* 4 |ULTIMATE.start_lcp_~x#1|) |ULTIMATE.start_lcp_~a#1.offset| 4 (* |ULTIMATE.start_lcp_~l~0#1| 4)) (select |#length| |ULTIMATE.start_lcp_~a#1.base|)))) (<= |ULTIMATE.start_lcp_#in~x#1| 2147483647) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_#t~malloc15#1.offset|) (<= |ULTIMATE.start_lcp_#in~n#1| 2147483647) (<= 0 |#StackHeapBarrier|) (< (+ |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_lcp_~x#1|) |ULTIMATE.start_lcp_~n#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_lcp_~x#1|)) (<= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset| 0) (= |#NULL.base| 0) (< (+ |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_lcp_~y#1|) |ULTIMATE.start_lcp_~n#1|) (<= 0 (+ |ULTIMATE.start_main_~n~0#1| 2147483648)))' at error location [2022-12-14 10:18:50,894 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:18:50,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:18:50,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 23 [2022-12-14 10:18:50,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007628876] [2022-12-14 10:18:50,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:18:50,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 10:18:50,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:50,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 10:18:50,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1104, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 10:18:50,896 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-14 10:18:51,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:51,341 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2022-12-14 10:18:51,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 10:18:51,342 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 17 [2022-12-14 10:18:51,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:51,343 INFO L225 Difference]: With dead ends: 69 [2022-12-14 10:18:51,343 INFO L226 Difference]: Without dead ends: 69 [2022-12-14 10:18:51,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=287, Invalid=1605, Unknown=0, NotChecked=0, Total=1892 [2022-12-14 10:18:51,344 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 330 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:51,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 100 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:18:51,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-12-14 10:18:51,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 47. [2022-12-14 10:18:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.3125) internal successors, (42), 39 states have internal predecessors, (42), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 10:18:51,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2022-12-14 10:18:51,347 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 17 [2022-12-14 10:18:51,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:51,347 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2022-12-14 10:18:51,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-14 10:18:51,348 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2022-12-14 10:18:51,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 10:18:51,348 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:51,348 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:51,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:18:51,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 10:18:51,550 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 10:18:51,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:51,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1935076244, now seen corresponding path program 1 times [2022-12-14 10:18:51,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:51,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557217292] [2022-12-14 10:18:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:51,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:18:51,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:51,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557217292] [2022-12-14 10:18:51,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557217292] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:18:51,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965379959] [2022-12-14 10:18:51,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:51,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:18:51,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:18:51,884 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:18:51,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:18:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:51,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 10:18:51,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:18:51,966 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 [2022-12-14 10:18:52,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:18:52,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:18:52,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:18:52,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965379959] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:18:52,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [66959993] [2022-12-14 10:18:52,459 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 10:18:52,459 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:18:52,459 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:18:52,459 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:18:52,460 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:18:52,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:52,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:52,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:52,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 10:18:52,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:52,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:52,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 57 [2022-12-14 10:18:52,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:52,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:52,572 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:18:52,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:18:52,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:52,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:52,618 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:18:52,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:18:53,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:53,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:53,126 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:18:53,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:18:53,144 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 124 for LOIs [2022-12-14 10:18:53,175 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:18:55,981 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1203#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483648)) |ULTIMATE.start_lcp_#t~short7#1| (= |ULTIMATE.start_#Ultimate.meminit_#sizeOfFields#1| 4) (<= |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934588) (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= (+ (* 4 |ULTIMATE.start_lcp_~x#1|) |ULTIMATE.start_lcp_~a#1.offset| 4 (* |ULTIMATE.start_lcp_~l~0#1| 4)) (select |#length| |ULTIMATE.start_lcp_~a#1.base|)) (<= 0 (+ 2147483648 |ULTIMATE.start_lcp_~y#1|)) (or (not (<= 0 (+ |ULTIMATE.start_lcp_~a#1.offset| (* 4 |ULTIMATE.start_lcp_~y#1|) (* |ULTIMATE.start_lcp_~l~0#1| 4)))) (not (<= (+ |ULTIMATE.start_lcp_~a#1.offset| (* 4 |ULTIMATE.start_lcp_~y#1|) 4 (* |ULTIMATE.start_lcp_~l~0#1| 4)) (select |#length| |ULTIMATE.start_lcp_~a#1.base|)))) (<= |ULTIMATE.start_lcp_#in~a#1.offset| 0) (<= 0 (+ |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934592)) (<= 0 (+ |ULTIMATE.start_lcp_#in~x#1| 2147483648)) (<= 0 |ULTIMATE.start_lcp_~l~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483647) (= (select |#valid| |ULTIMATE.start_lcp_~a#1.base|) 1) (<= |#NULL.offset| 0) (= |ULTIMATE.start_lcp_#t~mem5#1| (select (select |#memory_int| |ULTIMATE.start_lcp_~a#1.base|) (+ (* 4 |ULTIMATE.start_lcp_~x#1|) |ULTIMATE.start_lcp_~a#1.offset| (* |ULTIMATE.start_lcp_~l~0#1| 4)))) (<= 0 (+ |ULTIMATE.start_lcp_#in~n#1| 2147483648)) (<= 0 |ULTIMATE.start_lcp_#in~a#1.offset|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= 0 |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset|) (<= 0 (+ (* 4 |ULTIMATE.start_lcp_~x#1|) |ULTIMATE.start_lcp_~a#1.offset| (* |ULTIMATE.start_lcp_~l~0#1| 4))) (<= 0 (+ |ULTIMATE.start_lcp_#in~y#1| 2147483648)) (<= |ULTIMATE.start_lcp_#in~y#1| 2147483647) (<= |ULTIMATE.start_lcp_~a#1.offset| 0) (<= |ULTIMATE.start_lcp_~n#1| 2147483647) (<= |ULTIMATE.start_main_#t~malloc15#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)) (<= 0 |ULTIMATE.start_lcp_~a#1.offset|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= |ULTIMATE.start_lcp_#in~x#1| 2147483647) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_#t~malloc15#1.offset|) (<= |ULTIMATE.start_lcp_#in~n#1| 2147483647) (<= 0 |#StackHeapBarrier|) (< (+ |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_lcp_~x#1|) |ULTIMATE.start_lcp_~n#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_lcp_~x#1|)) (<= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset| 0) (= |#NULL.base| 0) (< (+ |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_lcp_~y#1|) |ULTIMATE.start_lcp_~n#1|) (<= 0 (+ |ULTIMATE.start_main_~n~0#1| 2147483648)))' at error location [2022-12-14 10:18:55,981 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:18:55,982 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:18:55,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 25 [2022-12-14 10:18:55,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387730979] [2022-12-14 10:18:55,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:18:55,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-14 10:18:55,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:18:55,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-14 10:18:55,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1253, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 10:18:55,984 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-14 10:18:56,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:18:56,697 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2022-12-14 10:18:56,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 10:18:56,698 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 18 [2022-12-14 10:18:56,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:18:56,698 INFO L225 Difference]: With dead ends: 68 [2022-12-14 10:18:56,698 INFO L226 Difference]: Without dead ends: 68 [2022-12-14 10:18:56,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=290, Invalid=1780, Unknown=0, NotChecked=0, Total=2070 [2022-12-14 10:18:56,700 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 353 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:18:56,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 181 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:18:56,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-12-14 10:18:56,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 46. [2022-12-14 10:18:56,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.28125) internal successors, (41), 38 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 10:18:56,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2022-12-14 10:18:56,705 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 18 [2022-12-14 10:18:56,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:18:56,705 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2022-12-14 10:18:56,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-14 10:18:56,705 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2022-12-14 10:18:56,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 10:18:56,706 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:18:56,706 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:18:56,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 10:18:56,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 10:18:56,908 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 10:18:56,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:18:56,910 INFO L85 PathProgramCache]: Analyzing trace with hash -988233770, now seen corresponding path program 1 times [2022-12-14 10:18:56,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:18:56,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415964449] [2022-12-14 10:18:56,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:56,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:18:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:57,215 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 10:18:57,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:18:57,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415964449] [2022-12-14 10:18:57,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415964449] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:18:57,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942804155] [2022-12-14 10:18:57,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:18:57,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:18:57,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:18:57,217 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:18:57,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 10:18:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:18:57,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-14 10:18:57,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:18:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:18:57,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:18:57,711 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:18:57,712 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 45 treesize of output 49 [2022-12-14 10:18:57,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 10:18:57,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942804155] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:18:57,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1647647359] [2022-12-14 10:18:57,800 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-12-14 10:18:57,800 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:18:57,801 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:18:57,801 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:18:57,801 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:18:57,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:57,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:57,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:57,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 10:18:57,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:57,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:57,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 57 [2022-12-14 10:18:57,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:57,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:57,921 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:18:57,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:18:57,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:57,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:57,975 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:18:57,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:18:58,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:58,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:18:58,740 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:18:58,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:18:58,764 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 78 for LOIs [2022-12-14 10:18:58,780 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:19:02,041 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1494#(and (<= 0 (+ |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483648)) (= |ULTIMATE.start_check_#in~y#1| |ULTIMATE.start_check_~y#1|) (= |ULTIMATE.start_check_#in~n#1| |ULTIMATE.start_check_~n#1|) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934588) (= |ULTIMATE.start_check_#in~a#1.base| |ULTIMATE.start_main_~a~0#1.base|) (<= 4 |ULTIMATE.start_#Ultimate.meminit_#sizeOfFields#1|) (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= 0 (+ 2147483648 |ULTIMATE.start_lcp_~y#1|)) (<= |ULTIMATE.start_lcp_#in~a#1.offset| 0) (<= 0 (+ |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934592)) (<= 0 (+ |ULTIMATE.start_lcp_#in~x#1| 2147483648)) (<= |ULTIMATE.start_lcp_~x#1| 2147483647) (<= |ULTIMATE.start_lcp_~y#1| 2147483647) (<= |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483647) (not (= (ite (and (< |ULTIMATE.start_check_~i~0#1| |ULTIMATE.start_check_~l#1|) (<= 0 |ULTIMATE.start_check_~i~0#1|)) 1 0) 0)) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_check_#in~x#1|) (<= 0 (+ |ULTIMATE.start_lcp_#in~n#1| 2147483648)) (<= 0 |ULTIMATE.start_lcp_#in~a#1.offset|) (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_check_#in~y#1|) (<= 0 |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset|) (<= |ULTIMATE.start_#Ultimate.meminit_#sizeOfFields#1| 4) (<= |ULTIMATE.start_check_#in~a#1.offset| 0) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_check_#in~n#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_lcp_~n#1|)) (= |ULTIMATE.start_main_~l~1#1| |ULTIMATE.start_check_#in~l#1|) (<= 0 (+ |ULTIMATE.start_lcp_#in~y#1| 2147483648)) (<= |ULTIMATE.start_lcp_#in~y#1| 2147483647) (<= |#NULL.base| 0) (<= |ULTIMATE.start_lcp_~a#1.offset| 0) (<= |ULTIMATE.start_check_~a#1.offset| 0) (<= |ULTIMATE.start_lcp_~n#1| 2147483647) (<= |ULTIMATE.start_main_#t~malloc15#1.offset| 0) (= |ULTIMATE.start_main_~l~1#1| |ULTIMATE.start_lcp_#res#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_check_~x#1|)) (<= |ULTIMATE.start_check_#in~n#1| 2147483647) (<= 0 |ULTIMATE.start_lcp_~a#1.offset|) (= |ULTIMATE.start_check_#in~x#1| |ULTIMATE.start_check_~x#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (or (not (<= 0 (+ |ULTIMATE.start_check_~a#1.offset| (* 4 |ULTIMATE.start_check_~x#1|) (* |ULTIMATE.start_check_~i~0#1| 4)))) (not (<= (+ |ULTIMATE.start_check_~a#1.offset| (* 4 |ULTIMATE.start_check_~x#1|) (* |ULTIMATE.start_check_~i~0#1| 4) 4) (select |#length| |ULTIMATE.start_check_~a#1.base|)))) (= |ULTIMATE.start_check_~a#1.base| |ULTIMATE.start_check_#in~a#1.base|) (<= 0 |ULTIMATE.start_check_~a#1.offset|) (<= |ULTIMATE.start_check_#in~x#1| 2147483647) (<= |ULTIMATE.start_lcp_#in~x#1| 2147483647) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~l~1#1| 2147483647) (= |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_lcp_#res#1|) (<= 0 |ULTIMATE.start_main_#t~malloc15#1.offset|) (<= |ULTIMATE.start_lcp_#in~n#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_check_~y#1|)) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_check_#in~l#1| |ULTIMATE.start_check_~l#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_lcp_~x#1|)) (<= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset| 0) (<= 0 |ULTIMATE.start_check_#in~a#1.offset|) (<= 0 (+ |ULTIMATE.start_main_~n~0#1| 2147483648)))' at error location [2022-12-14 10:19:02,041 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:19:02,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:19:02,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 22 [2022-12-14 10:19:02,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260199628] [2022-12-14 10:19:02,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:19:02,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 10:19:02,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:19:02,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 10:19:02,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 10:19:02,043 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 23 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 19 states have internal predecessors, (39), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 10:19:02,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:19:02,931 INFO L93 Difference]: Finished difference Result 123 states and 140 transitions. [2022-12-14 10:19:02,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 10:19:02,931 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 19 states have internal predecessors, (39), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 22 [2022-12-14 10:19:02,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:19:02,932 INFO L225 Difference]: With dead ends: 123 [2022-12-14 10:19:02,932 INFO L226 Difference]: Without dead ends: 123 [2022-12-14 10:19:02,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=321, Invalid=1841, Unknown=0, NotChecked=0, Total=2162 [2022-12-14 10:19:02,933 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 458 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:19:02,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 212 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:19:02,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-12-14 10:19:02,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 62. [2022-12-14 10:19:02,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 52 states have internal predecessors, (59), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 10:19:02,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2022-12-14 10:19:02,938 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 22 [2022-12-14 10:19:02,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:19:02,939 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2022-12-14 10:19:02,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 19 states have internal predecessors, (39), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 10:19:02,939 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2022-12-14 10:19:02,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 10:19:02,939 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:19:02,939 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:19:02,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 10:19:03,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:19:03,141 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 10:19:03,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:19:03,142 INFO L85 PathProgramCache]: Analyzing trace with hash -570475816, now seen corresponding path program 1 times [2022-12-14 10:19:03,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:19:03,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349597729] [2022-12-14 10:19:03,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:03,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:19:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 10:19:03,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:19:03,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349597729] [2022-12-14 10:19:03,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349597729] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:19:03,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580859909] [2022-12-14 10:19:03,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:03,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:19:03,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:19:03,372 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:19:03,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 10:19:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:03,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-14 10:19:03,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:19:03,430 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 [2022-12-14 10:19:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 10:19:03,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:19:03,956 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 10:19:03,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580859909] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:19:03,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1304758456] [2022-12-14 10:19:03,959 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 10:19:03,959 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:19:03,959 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:19:03,959 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:19:03,959 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:19:04,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:04,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:04,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 57 [2022-12-14 10:19:04,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:04,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:04,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:04,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 10:19:04,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:04,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:04,072 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:19:04,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:19:04,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:04,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:04,118 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:19:04,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:19:04,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:04,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:04,869 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:19:04,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:19:04,894 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 78 for LOIs [2022-12-14 10:19:04,910 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:19:08,429 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1868#(and (<= 0 (+ |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483648)) (= |ULTIMATE.start_check_#in~y#1| |ULTIMATE.start_check_~y#1|) (= |ULTIMATE.start_check_#in~n#1| |ULTIMATE.start_check_~n#1|) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934588) (= |ULTIMATE.start_check_#in~a#1.base| |ULTIMATE.start_main_~a~0#1.base|) (<= 4 |ULTIMATE.start_#Ultimate.meminit_#sizeOfFields#1|) (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= 0 (+ |ULTIMATE.start_check_~a#1.offset| (* 4 |ULTIMATE.start_check_~x#1|) (* |ULTIMATE.start_check_~i~0#1| 4))) (<= 0 (+ 2147483648 |ULTIMATE.start_lcp_~y#1|)) (<= |ULTIMATE.start_lcp_#in~a#1.offset| 0) (<= 0 (+ |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934592)) (<= 0 (+ |ULTIMATE.start_lcp_#in~x#1| 2147483648)) (<= |ULTIMATE.start_lcp_~x#1| 2147483647) (<= |ULTIMATE.start_lcp_~y#1| 2147483647) (<= |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483647) (not (= (ite (and (< |ULTIMATE.start_check_~i~0#1| |ULTIMATE.start_check_~l#1|) (<= 0 |ULTIMATE.start_check_~i~0#1|)) 1 0) 0)) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_check_#in~x#1|) (<= 0 (+ |ULTIMATE.start_lcp_#in~n#1| 2147483648)) (<= 0 |ULTIMATE.start_lcp_#in~a#1.offset|) (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_check_#in~y#1|) (<= 0 |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset|) (<= |ULTIMATE.start_#Ultimate.meminit_#sizeOfFields#1| 4) (<= |ULTIMATE.start_check_#in~a#1.offset| 0) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_check_#in~n#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_lcp_~n#1|)) (= |ULTIMATE.start_main_~l~1#1| |ULTIMATE.start_check_#in~l#1|) (<= 0 (+ |ULTIMATE.start_lcp_#in~y#1| 2147483648)) (= (select |#valid| |ULTIMATE.start_check_~a#1.base|) 1) (<= |ULTIMATE.start_lcp_#in~y#1| 2147483647) (<= (+ |ULTIMATE.start_check_~a#1.offset| (* 4 |ULTIMATE.start_check_~x#1|) (* |ULTIMATE.start_check_~i~0#1| 4) 4) (select |#length| |ULTIMATE.start_check_~a#1.base|)) (<= |#NULL.base| 0) (<= |ULTIMATE.start_lcp_~a#1.offset| 0) (<= |ULTIMATE.start_check_~a#1.offset| 0) (<= |ULTIMATE.start_lcp_~n#1| 2147483647) (<= |ULTIMATE.start_main_#t~malloc15#1.offset| 0) (= |ULTIMATE.start_main_~l~1#1| |ULTIMATE.start_lcp_#res#1|) (<= |ULTIMATE.start_check_#in~n#1| 2147483647) (<= 0 |ULTIMATE.start_lcp_~a#1.offset|) (= |ULTIMATE.start_check_#in~x#1| |ULTIMATE.start_check_~x#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= |ULTIMATE.start_check_~a#1.base| |ULTIMATE.start_check_#in~a#1.base|) (= |ULTIMATE.start_check_#t~mem10#1| (select (select |#memory_int| |ULTIMATE.start_check_~a#1.base|) (+ |ULTIMATE.start_check_~a#1.offset| (* 4 |ULTIMATE.start_check_~x#1|) (* |ULTIMATE.start_check_~i~0#1| 4)))) (<= 0 |ULTIMATE.start_check_~a#1.offset|) (<= |ULTIMATE.start_check_#in~x#1| 2147483647) (<= |ULTIMATE.start_lcp_#in~x#1| 2147483647) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~l~1#1| 2147483647) (= |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_lcp_#res#1|) (<= 0 |ULTIMATE.start_main_#t~malloc15#1.offset|) (<= |ULTIMATE.start_lcp_#in~n#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_check_~y#1|)) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_check_#in~l#1| |ULTIMATE.start_check_~l#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_lcp_~x#1|)) (<= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset| 0) (<= 0 |ULTIMATE.start_check_#in~a#1.offset|) (or (not (<= (+ (* 4 |ULTIMATE.start_check_~y#1|) |ULTIMATE.start_check_~a#1.offset| (* |ULTIMATE.start_check_~i~0#1| 4) 4) (select |#length| |ULTIMATE.start_check_~a#1.base|))) (not (<= 0 (+ (* 4 |ULTIMATE.start_check_~y#1|) |ULTIMATE.start_check_~a#1.offset| (* |ULTIMATE.start_check_~i~0#1| 4))))) (<= 0 (+ |ULTIMATE.start_main_~n~0#1| 2147483648)))' at error location [2022-12-14 10:19:08,430 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:19:08,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:19:08,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 21 [2022-12-14 10:19:08,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439557753] [2022-12-14 10:19:08,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:19:08,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 10:19:08,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:19:08,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 10:19:08,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1101, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 10:19:08,431 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 22 states, 16 states have (on average 2.625) internal successors, (42), 21 states have internal predecessors, (42), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 10:19:09,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:19:09,355 INFO L93 Difference]: Finished difference Result 120 states and 137 transitions. [2022-12-14 10:19:09,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-14 10:19:09,356 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 2.625) internal successors, (42), 21 states have internal predecessors, (42), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 23 [2022-12-14 10:19:09,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:19:09,356 INFO L225 Difference]: With dead ends: 120 [2022-12-14 10:19:09,356 INFO L226 Difference]: Without dead ends: 120 [2022-12-14 10:19:09,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=339, Invalid=2013, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 10:19:09,357 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 374 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:19:09,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 193 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:19:09,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-12-14 10:19:09,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 63. [2022-12-14 10:19:09,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 53 states have internal predecessors, (60), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 10:19:09,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2022-12-14 10:19:09,361 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 23 [2022-12-14 10:19:09,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:19:09,361 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2022-12-14 10:19:09,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 2.625) internal successors, (42), 21 states have internal predecessors, (42), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-14 10:19:09,361 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2022-12-14 10:19:09,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 10:19:09,361 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:19:09,361 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:19:09,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 10:19:09,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:19:09,563 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 10:19:09,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:19:09,564 INFO L85 PathProgramCache]: Analyzing trace with hash 63355431, now seen corresponding path program 1 times [2022-12-14 10:19:09,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:19:09,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472862995] [2022-12-14 10:19:09,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:09,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:19:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:09,677 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 10:19:09,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:19:09,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472862995] [2022-12-14 10:19:09,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472862995] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:19:09,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:19:09,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 10:19:09,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698818728] [2022-12-14 10:19:09,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:19:09,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:19:09,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:19:09,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:19:09,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:19:09,678 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:19:09,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:19:09,787 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2022-12-14 10:19:09,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 10:19:09,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2022-12-14 10:19:09,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:19:09,788 INFO L225 Difference]: With dead ends: 67 [2022-12-14 10:19:09,788 INFO L226 Difference]: Without dead ends: 67 [2022-12-14 10:19:09,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-14 10:19:09,788 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 45 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:19:09,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 108 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:19:09,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-12-14 10:19:09,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-12-14 10:19:09,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.26) internal successors, (63), 56 states have internal predecessors, (63), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 10:19:09,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2022-12-14 10:19:09,791 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 27 [2022-12-14 10:19:09,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:19:09,791 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2022-12-14 10:19:09,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:19:09,791 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2022-12-14 10:19:09,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-14 10:19:09,792 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:19:09,792 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:19:09,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 10:19:09,792 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 10:19:09,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:19:09,792 INFO L85 PathProgramCache]: Analyzing trace with hash -146411144, now seen corresponding path program 1 times [2022-12-14 10:19:09,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:19:09,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18297704] [2022-12-14 10:19:09,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:09,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:19:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:09,925 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 10:19:09,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:19:09,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18297704] [2022-12-14 10:19:09,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18297704] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:19:09,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614382039] [2022-12-14 10:19:09,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:09,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:19:09,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:19:09,927 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:19:09,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 10:19:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:09,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-14 10:19:09,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:19:10,099 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 10:19:10,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:19:10,231 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 10:19:10,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614382039] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:19:10,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [164026803] [2022-12-14 10:19:10,233 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-12-14 10:19:10,233 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:19:10,234 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:19:10,234 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:19:10,234 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:19:10,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:10,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:10,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:10,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 10:19:10,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:10,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:10,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 57 [2022-12-14 10:19:10,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:10,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:10,346 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:19:10,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:19:10,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:10,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:10,392 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:19:10,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:19:12,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:12,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:12,242 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:19:12,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:19:12,258 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 77 for LOIs [2022-12-14 10:19:12,320 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 78 for LOIs [2022-12-14 10:19:12,331 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:19:18,985 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2429#(and (<= 0 (+ |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483648)) (= |ULTIMATE.start_check_~a#1.offset| |ULTIMATE.start_check_#in~a#1.offset|) (= |ULTIMATE.start_check_#in~y#1| |ULTIMATE.start_check_~y#1|) (= |ULTIMATE.start_check_#in~n#1| |ULTIMATE.start_check_~n#1|) (= |ULTIMATE.start_#Ultimate.meminit_#sizeOfFields#1| 4) (<= |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934588) (<= (+ (* 4 |ULTIMATE.start_check_~y#1|) |ULTIMATE.start_check_~a#1.offset| (* |ULTIMATE.start_check_~i~0#1| 4) 4) (select |#length| |ULTIMATE.start_check_~a#1.base|)) (= |ULTIMATE.start_check_#in~a#1.base| |ULTIMATE.start_main_~a~0#1.base|) (<= 0 (+ |ULTIMATE.start_check_~a#1.offset| (* 4 |ULTIMATE.start_check_~x#1|) (* |ULTIMATE.start_check_~i~0#1| 4))) (<= 0 (+ 2147483648 |ULTIMATE.start_lcp_~y#1|)) (<= |ULTIMATE.start_lcp_#in~a#1.offset| 0) (<= 0 (+ |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934592)) (<= 0 (+ |ULTIMATE.start_lcp_#in~x#1| 2147483648)) (< (+ |ULTIMATE.start_check_~l#1| |ULTIMATE.start_check_~x#1|) |ULTIMATE.start_check_~n#1|) (<= |ULTIMATE.start_lcp_~x#1| 2147483647) (<= |ULTIMATE.start_lcp_~y#1| 2147483647) (<= |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483647) (not (= (ite (and (< |ULTIMATE.start_check_~i~0#1| |ULTIMATE.start_check_~l#1|) (<= 0 |ULTIMATE.start_check_~i~0#1|)) 1 0) 0)) (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_check_#in~x#1|) (<= 0 (+ |ULTIMATE.start_lcp_#in~n#1| 2147483648)) (<= 0 |ULTIMATE.start_lcp_#in~a#1.offset|) (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_check_#in~y#1|) (<= 0 |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset|) (not (<= (+ |ULTIMATE.start_check_~a#1.offset| (* 4 |ULTIMATE.start_check_~x#1|) 4 (* 4 |ULTIMATE.start_check_~l#1|)) (select |#length| |ULTIMATE.start_check_~a#1.base|))) (= |ULTIMATE.start_main_~a~0#1.offset| |ULTIMATE.start_check_#in~a#1.offset|) (< (+ |ULTIMATE.start_check_~l#1| |ULTIMATE.start_check_~y#1|) |ULTIMATE.start_check_~n#1|) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_check_#in~n#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_lcp_~n#1|)) (= |ULTIMATE.start_main_~l~1#1| |ULTIMATE.start_check_#in~l#1|) (<= 0 (+ |ULTIMATE.start_lcp_#in~y#1| 2147483648)) (= (select |#valid| |ULTIMATE.start_check_~a#1.base|) 1) (<= |ULTIMATE.start_lcp_#in~y#1| 2147483647) (<= (+ |ULTIMATE.start_check_~a#1.offset| (* 4 |ULTIMATE.start_check_~x#1|) (* |ULTIMATE.start_check_~i~0#1| 4) 4) (select |#length| |ULTIMATE.start_check_~a#1.base|)) (<= |ULTIMATE.start_lcp_~a#1.offset| 0) (<= |ULTIMATE.start_lcp_~n#1| 2147483647) (<= 0 (+ (* 4 |ULTIMATE.start_check_~y#1|) |ULTIMATE.start_check_~a#1.offset| (* |ULTIMATE.start_check_~i~0#1| 4))) (= |ULTIMATE.start_main_~l~1#1| |ULTIMATE.start_lcp_#res#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_check_#in~n#1| 2147483647) (<= 0 |ULTIMATE.start_lcp_~a#1.offset|) (= |ULTIMATE.start_main_#t~malloc15#1.offset| 0) (= |ULTIMATE.start_check_#in~x#1| |ULTIMATE.start_check_~x#1|) (= |ULTIMATE.start_check_~a#1.base| |ULTIMATE.start_check_#in~a#1.base|) (<= |ULTIMATE.start_lcp_#in~x#1| 2147483647) (<= |ULTIMATE.start_main_~l~1#1| 2147483647) (= |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_lcp_#res#1|) (<= |ULTIMATE.start_lcp_#in~n#1| 2147483647) (not (= (ite (= (select (select |#memory_int| |ULTIMATE.start_check_~a#1.base|) (+ (* 4 |ULTIMATE.start_check_~y#1|) |ULTIMATE.start_check_~a#1.offset| (* |ULTIMATE.start_check_~i~0#1| 4))) (select (select |#memory_int| |ULTIMATE.start_check_~a#1.base|) (+ |ULTIMATE.start_check_~a#1.offset| (* 4 |ULTIMATE.start_check_~x#1|) (* |ULTIMATE.start_check_~i~0#1| 4)))) 1 0) 0)) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_check_#in~l#1| |ULTIMATE.start_check_~l#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_lcp_~x#1|)) (<= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset| 0) (<= 0 |ULTIMATE.start_check_#in~a#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 10:19:18,985 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:19:18,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:19:18,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2022-12-14 10:19:18,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415388547] [2022-12-14 10:19:18,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:19:18,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:19:18,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:19:18,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:19:18,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812 [2022-12-14 10:19:18,987 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 10:19:19,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:19:19,093 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2022-12-14 10:19:19,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:19:19,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2022-12-14 10:19:19,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:19:19,094 INFO L225 Difference]: With dead ends: 94 [2022-12-14 10:19:19,094 INFO L226 Difference]: Without dead ends: 94 [2022-12-14 10:19:19,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=156, Invalid=900, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 10:19:19,095 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 98 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:19:19,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 118 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:19:19,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-12-14 10:19:19,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 78. [2022-12-14 10:19:19,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 64 states have internal predecessors, (73), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-14 10:19:19,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 91 transitions. [2022-12-14 10:19:19,099 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 91 transitions. Word has length 31 [2022-12-14 10:19:19,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:19:19,099 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 91 transitions. [2022-12-14 10:19:19,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 10:19:19,100 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 91 transitions. [2022-12-14 10:19:19,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 10:19:19,100 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:19:19,100 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:19:19,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 10:19:19,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:19:19,302 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 10:19:19,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:19:19,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1241746579, now seen corresponding path program 1 times [2022-12-14 10:19:19,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:19:19,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014499493] [2022-12-14 10:19:19,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:19,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:19:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:19,420 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 10:19:19,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:19:19,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014499493] [2022-12-14 10:19:19,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014499493] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:19:19,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266787561] [2022-12-14 10:19:19,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:19,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:19:19,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:19:19,422 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:19:19,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 10:19:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:19,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 10:19:19,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:19:19,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-12-14 10:19:19,527 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 64 treesize of output 54 [2022-12-14 10:19:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 10:19:19,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:19:27,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266787561] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:19:27,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1972435077] [2022-12-14 10:19:27,615 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-12-14 10:19:27,615 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:19:27,616 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:19:27,616 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:19:27,616 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:19:27,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:27,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:27,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:27,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 10:19:27,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:27,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:27,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 57 [2022-12-14 10:19:27,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:27,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:27,704 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:19:27,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:19:27,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:27,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:27,746 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:19:27,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:19:28,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:28,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:28,727 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:19:28,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:19:28,746 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 72 for LOIs [2022-12-14 10:19:28,784 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2022-12-14 10:19:28,785 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:19:35,156 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2816#(and (<= 0 (+ |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483648)) (= |ULTIMATE.start_check_#in~y#1| |ULTIMATE.start_check_~y#1|) (= |ULTIMATE.start_check_#in~n#1| |ULTIMATE.start_check_~n#1|) (= |ULTIMATE.start_#Ultimate.meminit_#sizeOfFields#1| 4) (<= |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934588) (<= (+ (* 4 |ULTIMATE.start_check_~y#1|) |ULTIMATE.start_check_~a#1.offset| (* |ULTIMATE.start_check_~i~0#1| 4) 4) (select |#length| |ULTIMATE.start_check_~a#1.base|)) (= |ULTIMATE.start_check_#in~a#1.base| |ULTIMATE.start_main_~a~0#1.base|) (<= 0 (+ |ULTIMATE.start_check_~a#1.offset| (* 4 |ULTIMATE.start_check_~x#1|) (* |ULTIMATE.start_check_~i~0#1| 4))) (<= |ULTIMATE.start_lcp_#in~a#1.offset| 0) (<= 0 (+ |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934592)) (<= 0 (+ |ULTIMATE.start_lcp_#in~x#1| 2147483648)) (< (+ |ULTIMATE.start_check_~l#1| |ULTIMATE.start_check_~x#1|) |ULTIMATE.start_check_~n#1|) (<= |ULTIMATE.start_lcp_~x#1| 2147483647) (<= |ULTIMATE.start_lcp_~y#1| 2147483647) (<= |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483647) (not (= (ite (and (< |ULTIMATE.start_check_~i~0#1| |ULTIMATE.start_check_~l#1|) (<= 0 |ULTIMATE.start_check_~i~0#1|)) 1 0) 0)) (= (select |#valid| |ULTIMATE.start_lcp_~a#1.base|) 1) (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_check_#in~x#1|) (<= 0 (+ |ULTIMATE.start_lcp_#in~n#1| 2147483648)) (<= 0 |ULTIMATE.start_lcp_#in~a#1.offset|) (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_check_#in~y#1|) (<= 0 |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset|) (not (<= (+ |ULTIMATE.start_check_~a#1.offset| (* 4 |ULTIMATE.start_check_~x#1|) 4 (* 4 |ULTIMATE.start_check_~l#1|)) (select |#length| |ULTIMATE.start_check_~a#1.base|))) (= |ULTIMATE.start_main_~a~0#1.offset| |ULTIMATE.start_check_#in~a#1.offset|) (< (+ |ULTIMATE.start_check_~l#1| |ULTIMATE.start_check_~y#1|) |ULTIMATE.start_check_~n#1|) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_check_#in~n#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_lcp_~n#1|)) (= |ULTIMATE.start_main_~l~1#1| |ULTIMATE.start_check_#in~l#1|) (<= 0 (+ |ULTIMATE.start_lcp_#in~y#1| 2147483648)) (= (select |#valid| |ULTIMATE.start_check_~a#1.base|) 1) (<= |ULTIMATE.start_lcp_#in~y#1| 2147483647) (<= (+ |ULTIMATE.start_check_~a#1.offset| (* 4 |ULTIMATE.start_check_~x#1|) (* |ULTIMATE.start_check_~i~0#1| 4) 4) (select |#length| |ULTIMATE.start_check_~a#1.base|)) (<= |ULTIMATE.start_lcp_~a#1.offset| 0) (<= |ULTIMATE.start_check_~a#1.offset| 0) (<= |ULTIMATE.start_lcp_~n#1| 2147483647) (<= 0 (+ (* 4 |ULTIMATE.start_check_~y#1|) |ULTIMATE.start_check_~a#1.offset| (* |ULTIMATE.start_check_~i~0#1| 4))) (= |ULTIMATE.start_main_~l~1#1| |ULTIMATE.start_lcp_#res#1|) (= |#NULL.offset| 0) (<= (+ |ULTIMATE.start_lcp_~a#1.offset| (* 4 |ULTIMATE.start_lcp_~y#1|) 4 (* |ULTIMATE.start_lcp_~l~0#1| 4)) (select |#length| |ULTIMATE.start_lcp_~a#1.base|)) (<= |ULTIMATE.start_check_#in~n#1| 2147483647) (<= 0 |ULTIMATE.start_lcp_~a#1.offset|) (= |ULTIMATE.start_main_#t~malloc15#1.offset| 0) (<= 0 (+ |ULTIMATE.start_lcp_~a#1.offset| (* 4 |ULTIMATE.start_lcp_~y#1|) (* |ULTIMATE.start_lcp_~l~0#1| 4))) (= |ULTIMATE.start_check_#in~x#1| |ULTIMATE.start_check_~x#1|) (= |ULTIMATE.start_check_~a#1.base| |ULTIMATE.start_check_#in~a#1.base|) (<= 0 |ULTIMATE.start_check_~a#1.offset|) (<= |ULTIMATE.start_lcp_#in~x#1| 2147483647) (<= |ULTIMATE.start_main_~l~1#1| 2147483647) (= |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_lcp_#res#1|) (<= |ULTIMATE.start_lcp_#in~n#1| 2147483647) (not (= (ite (= (select (select |#memory_int| |ULTIMATE.start_check_~a#1.base|) (+ (* 4 |ULTIMATE.start_check_~y#1|) |ULTIMATE.start_check_~a#1.offset| (* |ULTIMATE.start_check_~i~0#1| 4))) (select (select |#memory_int| |ULTIMATE.start_check_~a#1.base|) (+ |ULTIMATE.start_check_~a#1.offset| (* 4 |ULTIMATE.start_check_~x#1|) (* |ULTIMATE.start_check_~i~0#1| 4)))) 1 0) 0)) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_check_#in~l#1| |ULTIMATE.start_check_~l#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_lcp_~x#1|)) (<= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset| 0) (<= 0 |ULTIMATE.start_check_#in~a#1.offset|) (= |#NULL.base| 0))' at error location [2022-12-14 10:19:35,156 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:19:35,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:19:35,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-12-14 10:19:35,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119835171] [2022-12-14 10:19:35,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 10:19:35,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 10:19:35,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:19:35,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 10:19:35,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1028, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 10:19:35,158 INFO L87 Difference]: Start difference. First operand 78 states and 91 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-14 10:19:35,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:19:35,226 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2022-12-14 10:19:35,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:19:35,226 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 33 [2022-12-14 10:19:35,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:19:35,227 INFO L225 Difference]: With dead ends: 57 [2022-12-14 10:19:35,227 INFO L226 Difference]: Without dead ends: 57 [2022-12-14 10:19:35,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=194, Invalid=1212, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 10:19:35,227 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 56 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:19:35,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 69 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:19:35,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-14 10:19:35,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2022-12-14 10:19:35,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 41 states have (on average 1.146341463414634) internal successors, (47), 44 states have internal predecessors, (47), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 10:19:35,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2022-12-14 10:19:35,229 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 33 [2022-12-14 10:19:35,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:19:35,229 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2022-12-14 10:19:35,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-14 10:19:35,230 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2022-12-14 10:19:35,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-14 10:19:35,230 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:19:35,230 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:19:35,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 10:19:35,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 10:19:35,432 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 10:19:35,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:19:35,433 INFO L85 PathProgramCache]: Analyzing trace with hash -820770346, now seen corresponding path program 2 times [2022-12-14 10:19:35,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:19:35,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581584589] [2022-12-14 10:19:35,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:35,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:19:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:35,765 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 10:19:35,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:19:35,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581584589] [2022-12-14 10:19:35,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581584589] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:19:35,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624148324] [2022-12-14 10:19:35,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:19:35,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:19:35,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:19:35,766 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:19:35,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 10:19:35,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 10:19:35,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:19:35,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-14 10:19:35,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:19:36,010 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 10:19:36,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:19:36,190 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:19:36,191 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 45 treesize of output 49 [2022-12-14 10:19:36,314 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 10:19:36,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624148324] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:19:36,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1923793189] [2022-12-14 10:19:36,316 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-12-14 10:19:36,316 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:19:36,317 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:19:36,317 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:19:36,317 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:19:36,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:36,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:36,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 57 [2022-12-14 10:19:36,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:36,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:36,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:36,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 10:19:36,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:36,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:36,411 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:19:36,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:19:36,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:36,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:36,454 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:19:36,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:19:37,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:37,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:37,114 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:19:37,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:19:37,135 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 78 for LOIs [2022-12-14 10:19:37,147 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:19:40,320 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3168#(and (<= 0 (+ |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483648)) (= |ULTIMATE.start_check_#in~y#1| |ULTIMATE.start_check_~y#1|) (= |ULTIMATE.start_check_#in~n#1| |ULTIMATE.start_check_~n#1|) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934588) (= |ULTIMATE.start_check_#in~a#1.base| |ULTIMATE.start_main_~a~0#1.base|) (<= 4 |ULTIMATE.start_#Ultimate.meminit_#sizeOfFields#1|) (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= 0 (+ 2147483648 |ULTIMATE.start_lcp_~y#1|)) (<= |ULTIMATE.start_lcp_#in~a#1.offset| 0) (<= 0 (+ |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934592)) (<= 0 (+ |ULTIMATE.start_lcp_#in~x#1| 2147483648)) (<= |ULTIMATE.start_lcp_~x#1| 2147483647) (<= |ULTIMATE.start_lcp_~y#1| 2147483647) (<= |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483647) (not (= (ite (and (< |ULTIMATE.start_check_~i~0#1| |ULTIMATE.start_check_~l#1|) (<= 0 |ULTIMATE.start_check_~i~0#1|)) 1 0) 0)) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_check_#in~x#1|) (<= 0 (+ |ULTIMATE.start_lcp_#in~n#1| 2147483648)) (<= 0 |ULTIMATE.start_lcp_#in~a#1.offset|) (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_check_#in~y#1|) (<= 0 |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset|) (<= |ULTIMATE.start_#Ultimate.meminit_#sizeOfFields#1| 4) (<= |ULTIMATE.start_check_#in~a#1.offset| 0) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_check_#in~n#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_lcp_~n#1|)) (= |ULTIMATE.start_main_~l~1#1| |ULTIMATE.start_check_#in~l#1|) (<= 0 (+ |ULTIMATE.start_lcp_#in~y#1| 2147483648)) (<= |ULTIMATE.start_lcp_#in~y#1| 2147483647) (<= |#NULL.base| 0) (<= |ULTIMATE.start_lcp_~a#1.offset| 0) (<= |ULTIMATE.start_check_~a#1.offset| 0) (<= |ULTIMATE.start_lcp_~n#1| 2147483647) (<= |ULTIMATE.start_main_#t~malloc15#1.offset| 0) (= |ULTIMATE.start_main_~l~1#1| |ULTIMATE.start_lcp_#res#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_check_~x#1|)) (<= |ULTIMATE.start_check_#in~n#1| 2147483647) (<= 0 |ULTIMATE.start_lcp_~a#1.offset|) (= |ULTIMATE.start_check_#in~x#1| |ULTIMATE.start_check_~x#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (or (not (<= 0 (+ |ULTIMATE.start_check_~a#1.offset| (* 4 |ULTIMATE.start_check_~x#1|) (* |ULTIMATE.start_check_~i~0#1| 4)))) (not (<= (+ |ULTIMATE.start_check_~a#1.offset| (* 4 |ULTIMATE.start_check_~x#1|) (* |ULTIMATE.start_check_~i~0#1| 4) 4) (select |#length| |ULTIMATE.start_check_~a#1.base|)))) (= |ULTIMATE.start_check_~a#1.base| |ULTIMATE.start_check_#in~a#1.base|) (<= 0 |ULTIMATE.start_check_~a#1.offset|) (<= |ULTIMATE.start_check_#in~x#1| 2147483647) (<= |ULTIMATE.start_lcp_#in~x#1| 2147483647) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~l~1#1| 2147483647) (= |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_lcp_#res#1|) (<= 0 |ULTIMATE.start_main_#t~malloc15#1.offset|) (<= |ULTIMATE.start_lcp_#in~n#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_check_~y#1|)) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_check_#in~l#1| |ULTIMATE.start_check_~l#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_lcp_~x#1|)) (<= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset| 0) (<= 0 |ULTIMATE.start_check_#in~a#1.offset|) (<= 0 (+ |ULTIMATE.start_main_~n~0#1| 2147483648)))' at error location [2022-12-14 10:19:40,320 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:19:40,320 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:19:40,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2022-12-14 10:19:40,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601815149] [2022-12-14 10:19:40,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:19:40,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-14 10:19:40,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:19:40,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-14 10:19:40,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1287, Unknown=0, NotChecked=0, Total=1482 [2022-12-14 10:19:40,322 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 26 states, 20 states have (on average 2.6) internal successors, (52), 21 states have internal predecessors, (52), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-12-14 10:19:40,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:19:40,648 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2022-12-14 10:19:40,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 10:19:40,649 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 2.6) internal successors, (52), 21 states have internal predecessors, (52), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 32 [2022-12-14 10:19:40,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:19:40,650 INFO L225 Difference]: With dead ends: 53 [2022-12-14 10:19:40,650 INFO L226 Difference]: Without dead ends: 53 [2022-12-14 10:19:40,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 63 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=317, Invalid=1753, Unknown=0, NotChecked=0, Total=2070 [2022-12-14 10:19:40,651 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 119 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:19:40,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 120 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:19:40,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-12-14 10:19:40,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-12-14 10:19:40,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 43 states have internal predecessors, (46), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 10:19:40,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2022-12-14 10:19:40,653 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 32 [2022-12-14 10:19:40,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:19:40,653 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2022-12-14 10:19:40,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 2.6) internal successors, (52), 21 states have internal predecessors, (52), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-12-14 10:19:40,653 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2022-12-14 10:19:40,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 10:19:40,654 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:19:40,654 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-12-14 10:19:40,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 10:19:40,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 10:19:40,856 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 10:19:40,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:19:40,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1033119960, now seen corresponding path program 1 times [2022-12-14 10:19:40,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:19:40,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280035986] [2022-12-14 10:19:40,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:40,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:19:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:40,907 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 10:19:40,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:19:40,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280035986] [2022-12-14 10:19:40,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280035986] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:19:40,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:19:40,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:19:40,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013710110] [2022-12-14 10:19:40,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:19:40,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:19:40,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:19:40,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:19:40,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:19:40,908 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 10:19:40,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:19:40,919 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2022-12-14 10:19:40,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:19:40,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2022-12-14 10:19:40,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:19:40,920 INFO L225 Difference]: With dead ends: 52 [2022-12-14 10:19:40,920 INFO L226 Difference]: Without dead ends: 52 [2022-12-14 10:19:40,920 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 [2022-12-14 10:19:40,920 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:19:40,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:19:40,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-12-14 10:19:40,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-12-14 10:19:40,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 42 states have internal predecessors, (45), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 10:19:40,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2022-12-14 10:19:40,923 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 33 [2022-12-14 10:19:40,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:19:40,923 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2022-12-14 10:19:40,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 10:19:40,924 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2022-12-14 10:19:40,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 10:19:40,924 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:19:40,924 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:19:40,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 10:19:40,924 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 10:19:40,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:19:40,924 INFO L85 PathProgramCache]: Analyzing trace with hash 325923032, now seen corresponding path program 2 times [2022-12-14 10:19:40,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:19:40,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644693757] [2022-12-14 10:19:40,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:40,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:19:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 10:19:41,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:19:41,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644693757] [2022-12-14 10:19:41,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644693757] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:19:41,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696651266] [2022-12-14 10:19:41,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 10:19:41,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:19:41,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:19:41,274 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:19:41,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 10:19:41,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 10:19:41,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:19:41,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-14 10:19:41,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:19:41,549 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-14 10:19:41,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:19:41,738 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:19:41,738 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 45 treesize of output 49 [2022-12-14 10:19:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-14 10:19:41,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696651266] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:19:41,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [175548192] [2022-12-14 10:19:41,866 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-12-14 10:19:41,866 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:19:41,866 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:19:41,867 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:19:41,867 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:19:41,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:41,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:41,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 57 [2022-12-14 10:19:41,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:41,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:41,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:41,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 10:19:41,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:41,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:41,968 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:19:41,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:19:42,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:42,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:42,013 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:19:42,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:19:42,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:42,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:19:42,699 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 10:19:42,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-12-14 10:19:42,721 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 78 for LOIs [2022-12-14 10:19:42,736 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:19:46,402 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3625#(and (<= 0 (+ |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483648)) (= |ULTIMATE.start_check_#in~y#1| |ULTIMATE.start_check_~y#1|) (= |ULTIMATE.start_check_#in~n#1| |ULTIMATE.start_check_~n#1|) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934588) (= |ULTIMATE.start_check_#in~a#1.base| |ULTIMATE.start_main_~a~0#1.base|) (<= 4 |ULTIMATE.start_#Ultimate.meminit_#sizeOfFields#1|) (<= 0 |ULTIMATE.start_main_~a~0#1.offset|) (<= 0 (+ |ULTIMATE.start_check_~a#1.offset| (* 4 |ULTIMATE.start_check_~x#1|) (* |ULTIMATE.start_check_~i~0#1| 4))) (<= 0 (+ 2147483648 |ULTIMATE.start_lcp_~y#1|)) (<= |ULTIMATE.start_lcp_#in~a#1.offset| 0) (<= 0 (+ |ULTIMATE.start_#Ultimate.meminit_#product#1| 8589934592)) (<= 0 (+ |ULTIMATE.start_lcp_#in~x#1| 2147483648)) (<= |ULTIMATE.start_lcp_~x#1| 2147483647) (<= |ULTIMATE.start_lcp_~y#1| 2147483647) (<= |ULTIMATE.start_#Ultimate.meminit_#amountOfFields#1| 2147483647) (not (= (ite (and (< |ULTIMATE.start_check_~i~0#1| |ULTIMATE.start_check_~l#1|) (<= 0 |ULTIMATE.start_check_~i~0#1|)) 1 0) 0)) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_check_#in~x#1|) (<= 0 (+ |ULTIMATE.start_lcp_#in~n#1| 2147483648)) (<= 0 |ULTIMATE.start_lcp_#in~a#1.offset|) (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_check_#in~y#1|) (<= 0 |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset|) (<= |ULTIMATE.start_#Ultimate.meminit_#sizeOfFields#1| 4) (<= |ULTIMATE.start_check_#in~a#1.offset| 0) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_check_#in~n#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_lcp_~n#1|)) (= |ULTIMATE.start_main_~l~1#1| |ULTIMATE.start_check_#in~l#1|) (<= 0 (+ |ULTIMATE.start_lcp_#in~y#1| 2147483648)) (= (select |#valid| |ULTIMATE.start_check_~a#1.base|) 1) (<= |ULTIMATE.start_lcp_#in~y#1| 2147483647) (<= (+ |ULTIMATE.start_check_~a#1.offset| (* 4 |ULTIMATE.start_check_~x#1|) (* |ULTIMATE.start_check_~i~0#1| 4) 4) (select |#length| |ULTIMATE.start_check_~a#1.base|)) (<= |#NULL.base| 0) (<= |ULTIMATE.start_lcp_~a#1.offset| 0) (<= |ULTIMATE.start_check_~a#1.offset| 0) (<= |ULTIMATE.start_lcp_~n#1| 2147483647) (<= |ULTIMATE.start_main_#t~malloc15#1.offset| 0) (= |ULTIMATE.start_main_~l~1#1| |ULTIMATE.start_lcp_#res#1|) (<= |ULTIMATE.start_check_#in~n#1| 2147483647) (<= 0 |ULTIMATE.start_lcp_~a#1.offset|) (= |ULTIMATE.start_check_#in~x#1| |ULTIMATE.start_check_~x#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= |ULTIMATE.start_check_~a#1.base| |ULTIMATE.start_check_#in~a#1.base|) (= |ULTIMATE.start_check_#t~mem10#1| (select (select |#memory_int| |ULTIMATE.start_check_~a#1.base|) (+ |ULTIMATE.start_check_~a#1.offset| (* 4 |ULTIMATE.start_check_~x#1|) (* |ULTIMATE.start_check_~i~0#1| 4)))) (<= 0 |ULTIMATE.start_check_~a#1.offset|) (<= |ULTIMATE.start_check_#in~x#1| 2147483647) (<= |ULTIMATE.start_lcp_#in~x#1| 2147483647) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~l~1#1| 2147483647) (= |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_lcp_#res#1|) (<= 0 |ULTIMATE.start_main_#t~malloc15#1.offset|) (<= |ULTIMATE.start_lcp_#in~n#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_check_~y#1|)) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_check_#in~l#1| |ULTIMATE.start_check_~l#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_lcp_~x#1|)) (<= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= |ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset| 0) (<= 0 |ULTIMATE.start_check_#in~a#1.offset|) (or (not (<= (+ (* 4 |ULTIMATE.start_check_~y#1|) |ULTIMATE.start_check_~a#1.offset| (* |ULTIMATE.start_check_~i~0#1| 4) 4) (select |#length| |ULTIMATE.start_check_~a#1.base|))) (not (<= 0 (+ (* 4 |ULTIMATE.start_check_~y#1|) |ULTIMATE.start_check_~a#1.offset| (* |ULTIMATE.start_check_~i~0#1| 4))))) (<= 0 (+ |ULTIMATE.start_main_~n~0#1| 2147483648)))' at error location [2022-12-14 10:19:46,403 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 10:19:46,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:19:46,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 24 [2022-12-14 10:19:46,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608166533] [2022-12-14 10:19:46,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:19:46,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 10:19:46,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:19:46,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 10:19:46,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1298, Unknown=0, NotChecked=0, Total=1482 [2022-12-14 10:19:46,407 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 25 states, 19 states have (on average 2.736842105263158) internal successors, (52), 23 states have internal predecessors, (52), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-12-14 10:19:46,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:19:46,901 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2022-12-14 10:19:46,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 10:19:46,902 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.736842105263158) internal successors, (52), 23 states have internal predecessors, (52), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 33 [2022-12-14 10:19:46,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:19:46,902 INFO L225 Difference]: With dead ends: 51 [2022-12-14 10:19:46,902 INFO L226 Difference]: Without dead ends: 51 [2022-12-14 10:19:46,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 65 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=303, Invalid=1767, Unknown=0, NotChecked=0, Total=2070 [2022-12-14 10:19:46,903 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 111 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:19:46,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 116 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:19:46,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-12-14 10:19:46,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 36. [2022-12-14 10:19:46,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 10:19:46,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2022-12-14 10:19:46,905 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 33 [2022-12-14 10:19:46,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:19:46,905 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2022-12-14 10:19:46,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.736842105263158) internal successors, (52), 23 states have internal predecessors, (52), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2022-12-14 10:19:46,905 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2022-12-14 10:19:46,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-14 10:19:46,905 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:19:46,905 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-12-14 10:19:46,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 10:19:47,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:19:47,107 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-14 10:19:47,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:19:47,108 INFO L85 PathProgramCache]: Analyzing trace with hash 690839291, now seen corresponding path program 1 times [2022-12-14 10:19:47,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:19:47,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255674421] [2022-12-14 10:19:47,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:19:47,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:19:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:19:47,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 10:19:47,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:19:47,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255674421] [2022-12-14 10:19:47,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255674421] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:19:47,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:19:47,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:19:47,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924247951] [2022-12-14 10:19:47,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:19:47,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:19:47,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:19:47,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:19:47,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:19:47,195 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 10:19:47,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:19:47,225 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2022-12-14 10:19:47,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:19:47,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-12-14 10:19:47,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:19:47,225 INFO L225 Difference]: With dead ends: 35 [2022-12-14 10:19:47,225 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 10:19:47,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:19:47,226 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:19:47,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:19:47,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 10:19:47,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 10:19:47,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:19:47,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 10:19:47,227 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2022-12-14 10:19:47,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:19:47,227 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 10:19:47,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 10:19:47,227 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 10:19:47,228 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 10:19:47,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2022-12-14 10:19:47,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2022-12-14 10:19:47,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2022-12-14 10:19:47,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2022-12-14 10:19:47,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2022-12-14 10:19:47,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2022-12-14 10:19:47,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2022-12-14 10:19:47,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2022-12-14 10:19:47,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2022-12-14 10:19:47,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2022-12-14 10:19:47,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2022-12-14 10:19:47,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2022-12-14 10:19:47,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE (4 of 17 remaining) [2022-12-14 10:19:47,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE (3 of 17 remaining) [2022-12-14 10:19:47,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE (2 of 17 remaining) [2022-12-14 10:19:47,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK (1 of 17 remaining) [2022-12-14 10:19:47,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 17 remaining) [2022-12-14 10:19:47,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 10:19:47,234 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:19:47,236 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 10:19:47,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 10:19:47 BoogieIcfgContainer [2022-12-14 10:19:47,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 10:19:47,239 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 10:19:47,239 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 10:19:47,239 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 10:19:47,239 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:18:43" (3/4) ... [2022-12-14 10:19:47,241 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 10:19:47,246 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-12-14 10:19:47,246 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-14 10:19:47,251 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2022-12-14 10:19:47,251 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-12-14 10:19:47,252 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-12-14 10:19:47,252 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 10:19:47,252 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 10:19:47,276 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 10:19:47,276 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 10:19:47,276 INFO L158 Benchmark]: Toolchain (without parser) took 63846.49ms. Allocated memory was 138.4MB in the beginning and 220.2MB in the end (delta: 81.8MB). Free memory was 101.7MB in the beginning and 100.5MB in the end (delta: 1.1MB). Peak memory consumption was 83.8MB. Max. memory is 16.1GB. [2022-12-14 10:19:47,276 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 138.4MB. Free memory is still 107.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:19:47,276 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.22ms. Allocated memory is still 138.4MB. Free memory was 101.2MB in the beginning and 90.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 10:19:47,277 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.73ms. Allocated memory is still 138.4MB. Free memory was 90.3MB in the beginning and 88.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:19:47,277 INFO L158 Benchmark]: Boogie Preprocessor took 17.59ms. Allocated memory is still 138.4MB. Free memory was 88.7MB in the beginning and 87.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:19:47,277 INFO L158 Benchmark]: RCFGBuilder took 326.51ms. Allocated memory is still 138.4MB. Free memory was 87.4MB in the beginning and 69.0MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 10:19:47,277 INFO L158 Benchmark]: TraceAbstraction took 63261.36ms. Allocated memory was 138.4MB in the beginning and 220.2MB in the end (delta: 81.8MB). Free memory was 68.5MB in the beginning and 103.7MB in the end (delta: -35.1MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. [2022-12-14 10:19:47,277 INFO L158 Benchmark]: Witness Printer took 37.31ms. Allocated memory is still 220.2MB. Free memory was 103.7MB in the beginning and 100.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:19:47,278 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 138.4MB. Free memory is still 107.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 172.22ms. Allocated memory is still 138.4MB. Free memory was 101.2MB in the beginning and 90.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.73ms. Allocated memory is still 138.4MB. Free memory was 90.3MB in the beginning and 88.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.59ms. Allocated memory is still 138.4MB. Free memory was 88.7MB in the beginning and 87.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 326.51ms. Allocated memory is still 138.4MB. Free memory was 87.4MB in the beginning and 69.0MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 63261.36ms. Allocated memory was 138.4MB in the beginning and 220.2MB in the end (delta: 81.8MB). Free memory was 68.5MB in the beginning and 103.7MB in the end (delta: -35.1MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB. * Witness Printer took 37.31ms. Allocated memory is still 220.2MB. Free memory was 103.7MB in the beginning and 100.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 47]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 47]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 47]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 35]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 13]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 51 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 63.2s, OverallIterations: 17, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2354 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2344 mSDsluCounter, 1954 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1454 mSDsCounter, 422 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3141 IncrementalHoareTripleChecker+Invalid, 3563 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 422 mSolverCounterUnsat, 500 mSDtfsCounter, 3141 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 805 GetRequests, 395 SyntacticMatches, 28 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5006 ImplicationChecksByTransitivity, 45.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=12, InterpolantAutomatonStates: 149, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 306 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 14.6s InterpolantComputationTime, 599 NumberOfCodeBlocks, 579 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 743 ConstructedInterpolants, 11 QuantifiedInterpolants, 8915 SizeOfPredicates, 160 NumberOfNonLiveVariables, 1405 ConjunctsInSsa, 245 ConjunctsInUnsatCore, 32 InterpolantComputations, 9 PerfectInterpolantSequences, 222/365 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-14 10:19:47,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7428e32b-1514-41de-b87b-8b4bd09ea0bf/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE