./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcpy-alloca-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcpy-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --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 64bit --witnessprinter.graph.data.programhash 96d73e5144e69b17de356213175b4cac1e1bd0fb8c4e4377e7e151c0511f2395 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:46:45,425 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:46:45,532 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2023-11-19 04:46:45,540 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:46:45,541 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:46:45,609 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:46:45,610 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:46:45,610 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:46:45,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:46:45,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:46:45,612 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:46:45,613 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:46:45,613 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:46:45,614 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:46:45,614 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:46:45,615 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:46:45,615 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:46:45,616 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:46:45,624 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:46:45,625 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:46:45,627 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:46:45,627 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:46:45,628 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:46:45,629 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:46:45,645 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:46:45,646 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:46:45,646 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:46:45,647 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:46:45,647 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:46:45,648 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:46:45,649 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:46:45,649 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:46:45,649 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:46:45,650 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:46:45,650 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:46:45,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:46:45,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:46:45,651 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:46:45,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:46:45,651 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:46:45,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:46:45,656 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:46:45,656 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:46:45,657 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96d73e5144e69b17de356213175b4cac1e1bd0fb8c4e4377e7e151c0511f2395 [2023-11-19 04:46:45,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:46:45,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:46:45,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:46:45,995 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:46:45,995 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:46:45,997 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcpy-alloca-1.i [2023-11-19 04:46:48,997 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:46:49,281 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:46:49,282 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcpy-alloca-1.i [2023-11-19 04:46:49,299 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/data/adda99f25/f2df1aae0c1c43c8b846be0d3c6f4803/FLAG4270c5101 [2023-11-19 04:46:49,314 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/data/adda99f25/f2df1aae0c1c43c8b846be0d3c6f4803 [2023-11-19 04:46:49,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:46:49,319 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:46:49,320 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:46:49,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:46:49,336 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:46:49,337 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:46:49" (1/1) ... [2023-11-19 04:46:49,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ad29ff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:49, skipping insertion in model container [2023-11-19 04:46:49,338 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:46:49" (1/1) ... [2023-11-19 04:46:49,405 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:46:49,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:46:49,705 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:46:49,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:46:49,821 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:46:49,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:49 WrapperNode [2023-11-19 04:46:49,822 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:46:49,823 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:46:49,824 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:46:49,824 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:46:49,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:49" (1/1) ... [2023-11-19 04:46:49,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:49" (1/1) ... [2023-11-19 04:46:49,878 INFO L138 Inliner]: procedures = 111, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2023-11-19 04:46:49,879 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:46:49,880 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:46:49,880 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:46:49,880 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:46:49,889 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:49" (1/1) ... [2023-11-19 04:46:49,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:49" (1/1) ... [2023-11-19 04:46:49,900 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:49" (1/1) ... [2023-11-19 04:46:49,900 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:49" (1/1) ... [2023-11-19 04:46:49,906 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:49" (1/1) ... [2023-11-19 04:46:49,909 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:49" (1/1) ... [2023-11-19 04:46:49,911 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:49" (1/1) ... [2023-11-19 04:46:49,922 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:49" (1/1) ... [2023-11-19 04:46:49,925 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:46:49,926 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:46:49,926 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:46:49,932 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:46:49,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:49" (1/1) ... [2023-11-19 04:46:49,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:46:49,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:49,979 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:46:50,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:46:50,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:46:50,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:46:50,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:46:50,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:46:50,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:46:50,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:46:50,163 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:46:50,171 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:46:50,386 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:46:50,439 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:46:50,439 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:46:50,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:46:50 BoogieIcfgContainer [2023-11-19 04:46:50,450 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:46:50,453 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:46:50,453 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:46:50,456 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:46:50,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:46:49" (1/3) ... [2023-11-19 04:46:50,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22624731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:46:50, skipping insertion in model container [2023-11-19 04:46:50,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:49" (2/3) ... [2023-11-19 04:46:50,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22624731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:46:50, skipping insertion in model container [2023-11-19 04:46:50,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:46:50" (3/3) ... [2023-11-19 04:46:50,459 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcpy-alloca-1.i [2023-11-19 04:46:50,485 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:46:50,486 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-19 04:46:50,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:46:50,531 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;@1fe5964e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:46:50,531 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 04:46:50,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 8 states have (on average 2.25) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:50,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:46:50,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:50,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:46:50,541 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-19 04:46:50,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:50,547 INFO L85 PathProgramCache]: Analyzing trace with hash 86103, now seen corresponding path program 1 times [2023-11-19 04:46:50,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:50,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561121602] [2023-11-19 04:46:50,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:50,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:50,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:50,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:50,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561121602] [2023-11-19 04:46:50,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561121602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:46:50,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:46:50,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:46:50,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371844787] [2023-11-19 04:46:50,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:46:50,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:46:50,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:50,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:46:50,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:46:50,745 INFO L87 Difference]: Start difference. First operand has 16 states, 8 states have (on average 2.25) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-19 04:46:50,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:50,797 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2023-11-19 04:46:50,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:46:50,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 04:46:50,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:50,809 INFO L225 Difference]: With dead ends: 17 [2023-11-19 04:46:50,810 INFO L226 Difference]: Without dead ends: 15 [2023-11-19 04:46:50,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:46:50,816 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:50,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 15 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:46:50,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-19 04:46:50,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-19 04:46:50,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:50,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-11-19 04:46:50,855 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 3 [2023-11-19 04:46:50,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:50,856 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2023-11-19 04:46:50,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-19 04:46:50,857 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-11-19 04:46:50,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:46:50,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:50,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:46:50,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:46:50,859 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-19 04:46:50,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:50,860 INFO L85 PathProgramCache]: Analyzing trace with hash 86139, now seen corresponding path program 1 times [2023-11-19 04:46:50,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:50,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908853620] [2023-11-19 04:46:50,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:50,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:51,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:51,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:51,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908853620] [2023-11-19 04:46:51,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908853620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:46:51,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:46:51,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:46:51,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908522636] [2023-11-19 04:46:51,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:46:51,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:46:51,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:51,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:46:51,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:46:51,035 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-19 04:46:51,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:51,056 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-19 04:46:51,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:46:51,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 04:46:51,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:51,058 INFO L225 Difference]: With dead ends: 14 [2023-11-19 04:46:51,058 INFO L226 Difference]: Without dead ends: 14 [2023-11-19 04:46:51,059 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 [2023-11-19 04:46:51,061 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:51,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 5 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:46:51,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-19 04:46:51,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-19 04:46:51,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 8 states have (on average 1.75) internal successors, (14), 13 states have internal predecessors, (14), 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) [2023-11-19 04:46:51,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-11-19 04:46:51,066 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 3 [2023-11-19 04:46:51,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:51,067 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-11-19 04:46:51,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-19 04:46:51,067 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-11-19 04:46:51,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:46:51,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:51,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:46:51,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:46:51,069 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-19 04:46:51,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:51,070 INFO L85 PathProgramCache]: Analyzing trace with hash 86140, now seen corresponding path program 1 times [2023-11-19 04:46:51,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:51,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330907392] [2023-11-19 04:46:51,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:51,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:51,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:51,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330907392] [2023-11-19 04:46:51,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330907392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:46:51,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:46:51,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:46:51,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260200531] [2023-11-19 04:46:51,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:46:51,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:46:51,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:51,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:46:51,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:46:51,429 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-19 04:46:51,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:51,471 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2023-11-19 04:46:51,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:46:51,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 04:46:51,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:51,473 INFO L225 Difference]: With dead ends: 13 [2023-11-19 04:46:51,473 INFO L226 Difference]: Without dead ends: 13 [2023-11-19 04:46:51,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:46:51,481 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:51,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:46:51,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-19 04:46:51,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-19 04:46:51,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.625) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-11-19 04:46:51,485 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 3 [2023-11-19 04:46:51,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:51,485 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-11-19 04:46:51,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-19 04:46:51,486 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-11-19 04:46:51,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 04:46:51,486 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:51,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 04:46:51,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:46:51,487 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-19 04:46:51,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:51,488 INFO L85 PathProgramCache]: Analyzing trace with hash 2671267, now seen corresponding path program 1 times [2023-11-19 04:46:51,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:51,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189515436] [2023-11-19 04:46:51,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:51,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:51,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:51,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189515436] [2023-11-19 04:46:51,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189515436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:46:51,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:46:51,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:46:51,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248479112] [2023-11-19 04:46:51,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:46:51,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:46:51,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:51,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:46:51,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:46:51,560 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:51,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:51,584 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2023-11-19 04:46:51,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:46:51,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 04:46:51,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:51,586 INFO L225 Difference]: With dead ends: 12 [2023-11-19 04:46:51,586 INFO L226 Difference]: Without dead ends: 12 [2023-11-19 04:46:51,587 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 [2023-11-19 04:46:51,588 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:51,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:46:51,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-19 04:46:51,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-19 04:46:51,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.5) internal successors, (12), 11 states have internal predecessors, (12), 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) [2023-11-19 04:46:51,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-11-19 04:46:51,592 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 4 [2023-11-19 04:46:51,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:51,593 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-11-19 04:46:51,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:51,593 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-11-19 04:46:51,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 04:46:51,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:51,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 04:46:51,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:46:51,595 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-19 04:46:51,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:51,595 INFO L85 PathProgramCache]: Analyzing trace with hash 2671268, now seen corresponding path program 1 times [2023-11-19 04:46:51,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:51,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071217510] [2023-11-19 04:46:51,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:51,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:51,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:51,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:51,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071217510] [2023-11-19 04:46:51,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071217510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:46:51,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:46:51,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:46:51,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234343144] [2023-11-19 04:46:51,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:46:51,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:46:51,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:51,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:46:51,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:46:51,782 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:51,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:51,824 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2023-11-19 04:46:51,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:46:51,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 04:46:51,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:51,825 INFO L225 Difference]: With dead ends: 18 [2023-11-19 04:46:51,825 INFO L226 Difference]: Without dead ends: 18 [2023-11-19 04:46:51,826 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 [2023-11-19 04:46:51,827 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 8 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 [2023-11-19 04:46:51,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 8 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:46:51,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-19 04:46:51,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2023-11-19 04:46:51,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-11-19 04:46:51,833 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2023-11-19 04:46:51,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:51,833 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-11-19 04:46:51,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:51,834 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-11-19 04:46:51,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:46:51,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:51,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:46:51,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 04:46:51,835 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-19 04:46:51,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:51,836 INFO L85 PathProgramCache]: Analyzing trace with hash 82809278, now seen corresponding path program 1 times [2023-11-19 04:46:51,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:51,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76502394] [2023-11-19 04:46:51,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:51,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:52,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:52,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:52,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76502394] [2023-11-19 04:46:52,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76502394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:46:52,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:46:52,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:46:52,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779213696] [2023-11-19 04:46:52,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:46:52,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:46:52,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:52,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:46:52,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:46:52,217 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:52,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:52,302 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2023-11-19 04:46:52,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:46:52,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 04:46:52,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:52,305 INFO L225 Difference]: With dead ends: 17 [2023-11-19 04:46:52,306 INFO L226 Difference]: Without dead ends: 17 [2023-11-19 04:46:52,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:46:52,313 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 36 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:52,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 4 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:46:52,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-19 04:46:52,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2023-11-19 04:46:52,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.5) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:52,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-11-19 04:46:52,324 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 5 [2023-11-19 04:46:52,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:52,328 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-11-19 04:46:52,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:52,329 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-11-19 04:46:52,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:46:52,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:52,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:46:52,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 04:46:52,330 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-19 04:46:52,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:52,331 INFO L85 PathProgramCache]: Analyzing trace with hash 82809277, now seen corresponding path program 1 times [2023-11-19 04:46:52,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:52,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209762674] [2023-11-19 04:46:52,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:52,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:52,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:52,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:52,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209762674] [2023-11-19 04:46:52,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209762674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:46:52,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:46:52,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:46:52,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808508463] [2023-11-19 04:46:52,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:46:52,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:46:52,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:52,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:46:52,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:46:52,440 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:52,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:52,474 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2023-11-19 04:46:52,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:46:52,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 04:46:52,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:52,475 INFO L225 Difference]: With dead ends: 13 [2023-11-19 04:46:52,475 INFO L226 Difference]: Without dead ends: 13 [2023-11-19 04:46:52,476 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 [2023-11-19 04:46:52,479 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:52,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:46:52,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-19 04:46:52,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-19 04:46:52,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:52,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-11-19 04:46:52,484 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2023-11-19 04:46:52,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:52,485 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-11-19 04:46:52,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:52,486 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-11-19 04:46:52,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:46:52,486 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:52,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:52,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 04:46:52,487 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-19 04:46:52,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:52,487 INFO L85 PathProgramCache]: Analyzing trace with hash -2024662716, now seen corresponding path program 1 times [2023-11-19 04:46:52,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:52,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683548311] [2023-11-19 04:46:52,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:52,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:52,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:52,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:52,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683548311] [2023-11-19 04:46:52,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683548311] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:46:52,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333595346] [2023-11-19 04:46:52,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:52,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:52,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:52,864 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:46:52,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:46:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:52,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 04:46:52,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:46:53,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-11-19 04:46:53,187 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 04:46:53,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2023-11-19 04:46:53,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:53,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:46:53,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2023-11-19 04:46:53,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-19 04:46:53,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-11-19 04:46:53,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:53,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333595346] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:46:53,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2099575150] [2023-11-19 04:46:53,542 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 04:46:53,543 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:46:53,548 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:46:53,554 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:46:53,555 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:46:56,304 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:46:57,129 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '300#(and (<= 0 |ULTIMATE.start_cstrcpy_~from#1.offset|) (<= 2 |ULTIMATE.start_cstrcpy_~from#1.base|) (= |ULTIMATE.start_main_#t~malloc8#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_cstrcpy_~to#1.base|) (<= 2 |ULTIMATE.start_main_#t~malloc7#1.base|) (<= 2 |ULTIMATE.start_main_~nondetString~0#1.base|) (<= 2 |ULTIMATE.start_main_~nondetArea~0#1.base|) (= |ULTIMATE.start_main_~nondetArea~0#1.offset| 0) (<= (select |#length| |ULTIMATE.start_cstrcpy_~from#1.base|) |ULTIMATE.start_cstrcpy_~from#1.offset|) (= |ULTIMATE.start_main_~nondetString~0#1.offset| 0) (<= 2 |ULTIMATE.start_cstrcpy_#in~from#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_~to#1.offset|) (= |ULTIMATE.start_cstrcpy_#in~to#1.offset| 0) (<= 1 |ULTIMATE.start_main_~length1~0#1|) (<= 1 |ULTIMATE.start_main_~length2~0#1|) (<= 2 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 2 |ULTIMATE.start_cstrcpy_#in~to#1.base|) (<= 2 |ULTIMATE.start_cstrcpy_~save~0#1.base|) (= |ULTIMATE.start_cstrcpy_~save~0#1.offset| 0) (= |ULTIMATE.start_main_#t~malloc7#1.offset| 0) (= |ULTIMATE.start_cstrcpy_#in~from#1.offset| 0))' at error location [2023-11-19 04:46:57,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:46:57,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:46:57,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-11-19 04:46:57,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723088422] [2023-11-19 04:46:57,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:46:57,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 04:46:57,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:57,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 04:46:57,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-11-19 04:46:57,133 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:57,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:57,420 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2023-11-19 04:46:57,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 04:46:57,421 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 04:46:57,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:57,422 INFO L225 Difference]: With dead ends: 20 [2023-11-19 04:46:57,422 INFO L226 Difference]: Without dead ends: 20 [2023-11-19 04:46:57,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2023-11-19 04:46:57,423 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 31 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:57,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 15 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:46:57,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-19 04:46:57,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2023-11-19 04:46:57,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 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) [2023-11-19 04:46:57,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2023-11-19 04:46:57,427 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2023-11-19 04:46:57,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:57,427 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2023-11-19 04:46:57,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:57,427 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2023-11-19 04:46:57,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:46:57,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:57,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:57,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:46:57,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:57,629 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-19 04:46:57,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:57,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1659948644, now seen corresponding path program 1 times [2023-11-19 04:46:57,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:57,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355054040] [2023-11-19 04:46:57,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:57,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:57,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:57,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:57,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355054040] [2023-11-19 04:46:57,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355054040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:46:57,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:46:57,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:46:57,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577113517] [2023-11-19 04:46:57,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:46:57,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:46:57,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:46:57,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:46:57,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:46:57,731 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:57,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:46:57,748 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2023-11-19 04:46:57,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:46:57,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 04:46:57,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:46:57,750 INFO L225 Difference]: With dead ends: 14 [2023-11-19 04:46:57,750 INFO L226 Difference]: Without dead ends: 12 [2023-11-19 04:46:57,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:46:57,751 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:46:57,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:46:57,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-19 04:46:57,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-19 04:46:57,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 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) [2023-11-19 04:46:57,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-11-19 04:46:57,753 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2023-11-19 04:46:57,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:46:57,753 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-11-19 04:46:57,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:46:57,754 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-11-19 04:46:57,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:46:57,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:57,754 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:57,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 04:46:57,755 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-19 04:46:57,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:57,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1659965214, now seen corresponding path program 1 times [2023-11-19 04:46:57,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:57,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626218055] [2023-11-19 04:46:57,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:57,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:58,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:58,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:46:58,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626218055] [2023-11-19 04:46:58,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626218055] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:46:58,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836054125] [2023-11-19 04:46:58,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:58,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:46:58,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:58,206 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:46:58,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:46:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:46:58,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-19 04:46:58,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:46:58,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:46:58,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:46:58,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 04:46:58,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-11-19 04:46:58,545 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 04:46:58,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 15 [2023-11-19 04:46:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:58,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:46:58,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2023-11-19 04:46:58,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-11-19 04:46:58,965 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:46:59,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:46:59,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836054125] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:46:59,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [579157991] [2023-11-19 04:46:59,004 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 04:46:59,004 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:46:59,005 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:46:59,005 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:46:59,005 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:47:01,085 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:47:02,109 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '444#(and (<= 0 |ULTIMATE.start_cstrcpy_~from#1.offset|) (<= 2 |ULTIMATE.start_cstrcpy_~from#1.base|) (= |ULTIMATE.start_main_#t~malloc8#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_cstrcpy_~to#1.base|) (<= 2 |ULTIMATE.start_main_#t~malloc7#1.base|) (<= 2 |ULTIMATE.start_main_~nondetString~0#1.base|) (<= 2 |ULTIMATE.start_main_~nondetArea~0#1.base|) (= |ULTIMATE.start_main_~nondetArea~0#1.offset| 0) (= |ULTIMATE.start_main_~nondetString~0#1.offset| 0) (<= 2 |ULTIMATE.start_cstrcpy_#in~from#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_~to#1.offset|) (= |ULTIMATE.start_cstrcpy_#in~to#1.offset| 0) (<= 1 |ULTIMATE.start_main_~length1~0#1|) (<= 1 |ULTIMATE.start_main_~length2~0#1|) (<= 2 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 2 |ULTIMATE.start_cstrcpy_#in~to#1.base|) (<= 2 |ULTIMATE.start_cstrcpy_~save~0#1.base|) (= |ULTIMATE.start_cstrcpy_~save~0#1.offset| 0) (= |ULTIMATE.start_main_#t~malloc7#1.offset| 0) (<= (select |#length| |ULTIMATE.start_cstrcpy_~to#1.base|) |ULTIMATE.start_cstrcpy_~to#1.offset|) (= |ULTIMATE.start_cstrcpy_#in~from#1.offset| 0))' at error location [2023-11-19 04:47:02,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:47:02,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:47:02,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-11-19 04:47:02,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138546442] [2023-11-19 04:47:02,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:47:02,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 04:47:02,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:47:02,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 04:47:02,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2023-11-19 04:47:02,112 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 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) [2023-11-19 04:47:02,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:47:02,750 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2023-11-19 04:47:02,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 04:47:02,750 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 04:47:02,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:47:02,751 INFO L225 Difference]: With dead ends: 13 [2023-11-19 04:47:02,751 INFO L226 Difference]: Without dead ends: 13 [2023-11-19 04:47:02,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2023-11-19 04:47:02,752 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:47:02,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:47:02,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-19 04:47:02,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2023-11-19 04:47:02,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:47:02,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-19 04:47:02,756 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2023-11-19 04:47:02,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:47:02,757 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-11-19 04:47:02,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 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) [2023-11-19 04:47:02,759 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-19 04:47:02,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 04:47:02,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:47:02,760 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2023-11-19 04:47:02,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:47:02,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 04:47:02,964 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-19 04:47:02,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:47:02,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1793703588, now seen corresponding path program 2 times [2023-11-19 04:47:02,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:47:02,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090140259] [2023-11-19 04:47:02,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:47:02,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:47:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:47:03,447 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:47:03,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:47:03,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090140259] [2023-11-19 04:47:03,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090140259] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:47:03,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141423012] [2023-11-19 04:47:03,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:47:03,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:47:03,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:47:03,450 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:47:03,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:47:03,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 04:47:03,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:47:03,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-19 04:47:03,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:47:03,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 04:47:03,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-19 04:47:03,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-11-19 04:47:03,769 INFO L349 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2023-11-19 04:47:03,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 23 [2023-11-19 04:47:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:47:03,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:47:04,111 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 04:47:04,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 36 [2023-11-19 04:47:04,126 INFO L378 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 38 treesize of output 34 [2023-11-19 04:47:04,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-19 04:47:04,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2023-11-19 04:47:04,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2023-11-19 04:47:04,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:47:04,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141423012] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:47:04,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [165916609] [2023-11-19 04:47:04,239 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 04:47:04,239 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:47:04,239 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:47:04,240 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:47:04,240 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:47:05,837 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:47:06,605 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '561#(and (<= 0 |ULTIMATE.start_cstrcpy_~from#1.offset|) (<= 2 |ULTIMATE.start_cstrcpy_~from#1.base|) (= |ULTIMATE.start_main_#t~malloc8#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_cstrcpy_~to#1.base|) (<= 2 |ULTIMATE.start_main_#t~malloc7#1.base|) (<= 2 |ULTIMATE.start_main_~nondetString~0#1.base|) (<= 2 |ULTIMATE.start_main_~nondetArea~0#1.base|) (= |ULTIMATE.start_main_~nondetArea~0#1.offset| 0) (<= (select |#length| |ULTIMATE.start_cstrcpy_~from#1.base|) |ULTIMATE.start_cstrcpy_~from#1.offset|) (= |ULTIMATE.start_main_~nondetString~0#1.offset| 0) (<= 2 |ULTIMATE.start_cstrcpy_#in~from#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_~to#1.offset|) (= |ULTIMATE.start_cstrcpy_#in~to#1.offset| 0) (<= 1 |ULTIMATE.start_main_~length1~0#1|) (<= 1 |ULTIMATE.start_main_~length2~0#1|) (<= 2 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 2 |ULTIMATE.start_cstrcpy_#in~to#1.base|) (<= 2 |ULTIMATE.start_cstrcpy_~save~0#1.base|) (= |ULTIMATE.start_cstrcpy_~save~0#1.offset| 0) (= |ULTIMATE.start_main_#t~malloc7#1.offset| 0) (= |ULTIMATE.start_cstrcpy_#in~from#1.offset| 0))' at error location [2023-11-19 04:47:06,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:47:06,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:47:06,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2023-11-19 04:47:06,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634362209] [2023-11-19 04:47:06,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:47:06,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-19 04:47:06,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:47:06,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-19 04:47:06,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=612, Unknown=5, NotChecked=0, Total=702 [2023-11-19 04:47:06,608 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 22 states have internal predecessors, (28), 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) [2023-11-19 04:47:08,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-19 04:47:09,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:47:09,352 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2023-11-19 04:47:09,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 04:47:09,353 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-19 04:47:09,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:47:09,354 INFO L225 Difference]: With dead ends: 19 [2023-11-19 04:47:09,354 INFO L226 Difference]: Without dead ends: 19 [2023-11-19 04:47:09,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=199, Invalid=1056, Unknown=5, NotChecked=0, Total=1260 [2023-11-19 04:47:09,356 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 63 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:47:09,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 130 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2023-11-19 04:47:09,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-19 04:47:09,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2023-11-19 04:47:09,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:47:09,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-11-19 04:47:09,359 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2023-11-19 04:47:09,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:47:09,359 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2023-11-19 04:47:09,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 22 states have internal predecessors, (28), 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) [2023-11-19 04:47:09,359 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-11-19 04:47:09,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 04:47:09,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:47:09,360 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1] [2023-11-19 04:47:09,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:47:09,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:47:09,576 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-19 04:47:09,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:47:09,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1744681636, now seen corresponding path program 3 times [2023-11-19 04:47:09,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:47:09,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135512917] [2023-11-19 04:47:09,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:47:09,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:47:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:47:10,251 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:47:10,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:47:10,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135512917] [2023-11-19 04:47:10,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135512917] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:47:10,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451808360] [2023-11-19 04:47:10,252 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 04:47:10,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:47:10,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:47:10,253 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:47:10,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:47:10,349 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 04:47:10,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:47:10,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-19 04:47:10,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:47:10,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:47:10,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:47:10,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 04:47:10,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-19 04:47:10,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-11-19 04:47:10,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2023-11-19 04:47:10,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 30 [2023-11-19 04:47:11,042 INFO L349 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2023-11-19 04:47:11,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 39 [2023-11-19 04:47:11,150 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:47:11,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:47:12,206 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 04:47:12,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 60 [2023-11-19 04:47:12,216 INFO L378 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 88 treesize of output 80 [2023-11-19 04:47:12,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-19 04:47:12,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 63 [2023-11-19 04:47:12,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-19 04:47:12,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-19 04:47:12,505 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:47:12,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451808360] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:47:12,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1943003030] [2023-11-19 04:47:12,510 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 04:47:12,510 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:47:12,510 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:47:12,510 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:47:12,510 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:47:14,063 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:47:15,326 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '743#(and (<= 0 |ULTIMATE.start_cstrcpy_~from#1.offset|) (<= 2 |ULTIMATE.start_cstrcpy_~from#1.base|) (= |ULTIMATE.start_main_#t~malloc8#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_cstrcpy_~to#1.base|) (<= 2 |ULTIMATE.start_main_#t~malloc7#1.base|) (<= 2 |ULTIMATE.start_main_~nondetString~0#1.base|) (<= 2 |ULTIMATE.start_main_~nondetArea~0#1.base|) (= |ULTIMATE.start_main_~nondetArea~0#1.offset| 0) (<= (select |#length| |ULTIMATE.start_cstrcpy_~from#1.base|) |ULTIMATE.start_cstrcpy_~from#1.offset|) (= |ULTIMATE.start_main_~nondetString~0#1.offset| 0) (<= 2 |ULTIMATE.start_cstrcpy_#in~from#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_~to#1.offset|) (= |ULTIMATE.start_cstrcpy_#in~to#1.offset| 0) (<= 1 |ULTIMATE.start_main_~length1~0#1|) (<= 1 |ULTIMATE.start_main_~length2~0#1|) (<= 2 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 2 |ULTIMATE.start_cstrcpy_#in~to#1.base|) (<= 2 |ULTIMATE.start_cstrcpy_~save~0#1.base|) (= |ULTIMATE.start_cstrcpy_~save~0#1.offset| 0) (= |ULTIMATE.start_main_#t~malloc7#1.offset| 0) (= |ULTIMATE.start_cstrcpy_#in~from#1.offset| 0))' at error location [2023-11-19 04:47:15,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:47:15,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:47:15,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 14] total 32 [2023-11-19 04:47:15,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491198920] [2023-11-19 04:47:15,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:47:15,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-19 04:47:15,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:47:15,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-19 04:47:15,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1222, Unknown=33, NotChecked=0, Total=1406 [2023-11-19 04:47:15,330 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 33 states, 32 states have (on average 1.4375) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:47:17,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:47:17,763 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2023-11-19 04:47:17,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 04:47:17,764 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.4375) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-19 04:47:17,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:47:17,765 INFO L225 Difference]: With dead ends: 31 [2023-11-19 04:47:17,765 INFO L226 Difference]: Without dead ends: 31 [2023-11-19 04:47:17,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=453, Invalid=2698, Unknown=41, NotChecked=0, Total=3192 [2023-11-19 04:47:17,767 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 61 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 18 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:47:17,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 279 Invalid, 14 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 04:47:17,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-19 04:47:17,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2023-11-19 04:47:17,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:47:17,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2023-11-19 04:47:17,773 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 16 [2023-11-19 04:47:17,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:47:17,773 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2023-11-19 04:47:17,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.4375) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:47:17,774 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2023-11-19 04:47:17,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 04:47:17,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:47:17,775 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1] [2023-11-19 04:47:17,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:47:17,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 04:47:17,980 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-19 04:47:17,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:47:17,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1608600924, now seen corresponding path program 4 times [2023-11-19 04:47:17,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:47:17,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224147434] [2023-11-19 04:47:17,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:47:17,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:47:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:47:19,497 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:47:19,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:47:19,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224147434] [2023-11-19 04:47:19,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224147434] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:47:19,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906835477] [2023-11-19 04:47:19,497 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 04:47:19,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:47:19,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:47:19,499 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:47:19,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673307d5-334c-435b-a006-5a827555a61d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:47:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:47:19,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 105 conjunts are in the unsatisfiable core [2023-11-19 04:47:19,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:47:19,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 04:47:19,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-11-19 04:47:19,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2023-11-19 04:47:20,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2023-11-19 04:47:20,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 35 [2023-11-19 04:47:20,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 43 [2023-11-19 04:47:21,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 51 [2023-11-19 04:47:21,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 59 [2023-11-19 04:47:21,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 67 [2023-11-19 04:47:22,193 INFO L349 Elim1Store]: treesize reduction 28, result has 68.5 percent of original size [2023-11-19 04:47:22,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 28 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 8 case distinctions, treesize of input 88 treesize of output 95 [2023-11-19 04:47:22,212 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-11-19 04:47:22,263 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-19 04:47:22,451 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:47:22,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:47:27,021 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 04:47:27,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 175 treesize of output 108 [2023-11-19 04:47:27,043 INFO L378 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 188 treesize of output 172 [2023-11-19 04:47:27,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 225 treesize of output 195 [2023-11-19 04:47:27,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 04:47:27,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 04:47:27,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-19 04:47:27,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 04:47:27,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 04:47:27,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 04:47:27,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 04:47:27,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 04:47:27,502 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-19 04:47:27,529 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-19 04:47:27,555 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-11-19 04:47:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:47:27,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906835477] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:47:27,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1594640293] [2023-11-19 04:47:27,760 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 04:47:27,760 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:47:27,761 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:47:27,761 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:47:27,761 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:47:29,105 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:47:31,716 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1064#(and (<= 0 |ULTIMATE.start_cstrcpy_~from#1.offset|) (<= 2 |ULTIMATE.start_cstrcpy_~from#1.base|) (= |ULTIMATE.start_main_#t~malloc8#1.offset| 0) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_cstrcpy_~to#1.base|) (<= 2 |ULTIMATE.start_main_#t~malloc7#1.base|) (<= 2 |ULTIMATE.start_main_~nondetString~0#1.base|) (<= 2 |ULTIMATE.start_main_~nondetArea~0#1.base|) (= |ULTIMATE.start_main_~nondetArea~0#1.offset| 0) (<= (select |#length| |ULTIMATE.start_cstrcpy_~from#1.base|) |ULTIMATE.start_cstrcpy_~from#1.offset|) (= |ULTIMATE.start_main_~nondetString~0#1.offset| 0) (<= 2 |ULTIMATE.start_cstrcpy_#in~from#1.base|) (<= 0 |ULTIMATE.start_cstrcpy_~to#1.offset|) (= |ULTIMATE.start_cstrcpy_#in~to#1.offset| 0) (<= 1 |ULTIMATE.start_main_~length1~0#1|) (<= 1 |ULTIMATE.start_main_~length2~0#1|) (<= 2 |ULTIMATE.start_main_#t~malloc8#1.base|) (<= 2 |ULTIMATE.start_cstrcpy_#in~to#1.base|) (<= 2 |ULTIMATE.start_cstrcpy_~save~0#1.base|) (= |ULTIMATE.start_cstrcpy_~save~0#1.offset| 0) (= |ULTIMATE.start_main_#t~malloc7#1.offset| 0) (= |ULTIMATE.start_cstrcpy_#in~from#1.offset| 0))' at error location [2023-11-19 04:47:31,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:47:31,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:47:31,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19, 26] total 55 [2023-11-19 04:47:31,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073417600] [2023-11-19 04:47:31,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:47:31,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-11-19 04:47:31,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:47:31,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-11-19 04:47:31,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=3122, Unknown=170, NotChecked=0, Total=3660 [2023-11-19 04:47:31,722 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 56 states, 55 states have (on average 1.490909090909091) internal successors, (82), 56 states have internal predecessors, (82), 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) [2023-11-19 04:47:37,885 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse6 (select |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~from#1.base|)) (.cse44 (+ 7 |c_ULTIMATE.start_cstrcpy_~from#1.offset|)) (.cse37 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 8)) (.cse49 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 4)) (.cse48 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 5)) (.cse46 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 6)) (.cse8 (select |c_#length| |c_ULTIMATE.start_cstrcpy_~from#1.base|)) (.cse45 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 2)) (.cse47 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 3)) (.cse20 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 1)) (.cse9 (div |c_ULTIMATE.start_main_~length2~0#1| 18446744073709551616))) (let ((.cse10 (select |c_#length| |c_ULTIMATE.start_main_~nondetString~0#1.base|)) (.cse11 (* 18446744073709551616 .cse9)) (.cse0 (forall ((v_ArrVal_192 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_192) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse20) 0))) (.cse1 (forall ((v_ArrVal_194 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_194) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse47) 0))) (.cse2 (forall ((v_ArrVal_193 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_193) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse45) 0))) (.cse3 (and (<= 0 .cse48) (<= .cse46 .cse8))) (.cse4 (forall ((v_ArrVal_195 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_195) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse49) 0))) (.cse26 (forall ((v_ArrVal_195 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_195) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse45) 0))) (.cse27 (and (<= .cse49 .cse8) (<= 0 .cse47))) (.cse28 (forall ((v_ArrVal_194 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_194) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse20) 0))) (.cse12 (and (<= 0 .cse44) (<= .cse37 .cse8))) (.cse13 (forall ((v_ArrVal_192 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_192) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse47) 0))) (.cse14 (forall ((v_ArrVal_193 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_193) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse49) 0))) (.cse15 (forall ((v_ArrVal_194 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_194) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse48) 0))) (.cse16 (forall ((v_ArrVal_191 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_191) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse45) 0))) (.cse17 (forall ((v_ArrVal_195 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_195) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse46) 0))) (.cse18 (forall ((v_ArrVal_190 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_190) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse20) 0))) (.cse38 (forall ((v_ArrVal_191 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_191) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse20) 0))) (.cse22 (= (select .cse6 |c_ULTIMATE.start_cstrcpy_~from#1.offset|) 0)) (.cse39 (forall ((v_ArrVal_193 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_193) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse47) 0))) (.cse40 (forall ((v_ArrVal_194 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_194) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse49) 0))) (.cse41 (forall ((v_ArrVal_195 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_195) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse48) 0))) (.cse42 (forall ((v_ArrVal_192 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_192) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse45) 0))) (.cse43 (and (<= .cse44 .cse8) (<= 0 .cse46))) (.cse29 (forall ((v_ArrVal_195 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_195) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse20) 0))) (.cse19 (and (<= .cse47 .cse8) (<= 0 .cse45))) (.cse21 (and (<= 0 .cse49) (<= .cse48 .cse8))) (.cse23 (forall ((v_ArrVal_194 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_194) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse45) 0))) (.cse24 (forall ((v_ArrVal_193 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_193) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse20) 0))) (.cse25 (forall ((v_ArrVal_195 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_195) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse47) 0))) (.cse30 (forall ((v_ArrVal_192 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_192) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse49) 0))) (.cse31 (forall ((v_ArrVal_193 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_193) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse48) 0))) (.cse32 (forall ((v_ArrVal_191 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_191) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse47) 0))) (.cse33 (forall ((v_ArrVal_189 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_189) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse20)))) (.cse34 (forall ((v_ArrVal_194 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_194) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse46) 0))) (.cse35 (forall ((v_ArrVal_190 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_190) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse45) 0))) (.cse36 (forall ((v_ArrVal_195 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_cstrcpy_~to#1.base| v_ArrVal_195) |c_ULTIMATE.start_cstrcpy_~from#1.base|) .cse44) 0))) (.cse5 (= |c_ULTIMATE.start_cstrcpy_#t~mem4#1| 0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (exists ((|ULTIMATE.start_main_~nondetString~0#1.offset| Int) (|ULTIMATE.start_main_~length2~0#1| Int)) (let ((.cse7 (+ |ULTIMATE.start_main_~length2~0#1| |ULTIMATE.start_main_~nondetString~0#1.offset|))) (and (<= |c_ULTIMATE.start_cstrcpy_~from#1.offset| (+ 7 |ULTIMATE.start_main_~nondetString~0#1.offset|)) (<= |ULTIMATE.start_main_~nondetString~0#1.offset| 0) (= (select .cse6 (+ (- 1) |ULTIMATE.start_main_~length2~0#1| |ULTIMATE.start_main_~nondetString~0#1.offset|)) 0) (<= 1 .cse7) (<= .cse7 .cse8)))) (= 7 |c_ULTIMATE.start_cstrcpy_~from#1.offset|) (not (= (select .cse6 (+ (- 2) |c_ULTIMATE.start_cstrcpy_~from#1.offset|)) 0)) (or (< .cse9 0) (< (+ .cse10 .cse11) (+ |c_ULTIMATE.start_main_~length2~0#1| 1))) (or .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse5 .cse18) (<= 7 |c_ULTIMATE.start_cstrcpy_~from#1.offset|) (or .cse19 (= (select .cse6 .cse20) 0) .cse5) (or .cse21 .cse22 .cse23 .cse24 .cse25) (or .cse22 .cse26 .cse27 .cse28) (not (= (select .cse6 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| (- 4))) 0)) (or .cse22 .cse29 .cse19) (or .cse30 .cse31 .cse22 (< |c_ULTIMATE.start_cstrcpy_~from#1.offset| 0) .cse32 .cse33 .cse34 .cse35 .cse36 (< .cse37 .cse8)) (not (= (select .cse6 (+ (- 1) |c_ULTIMATE.start_cstrcpy_~from#1.offset|)) 0)) (or .cse38 .cse39 .cse40 .cse41 .cse42 .cse43 .cse5) (or (< 8 .cse8) (and (= .cse8 8) .cse5)) (not (= (select .cse6 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| (- 7))) 0)) (not (= (select .cse6 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| (- 6))) 0)) (or (< 0 (+ .cse9 1)) (< |c_ULTIMATE.start_main_~length2~0#1| (+ .cse10 .cse11 1))) (not (= (select .cse6 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| (- 5))) 0)) (or .cse0 .cse1 .cse22 .cse2 .cse3 .cse4) (or .cse26 .cse27 .cse28 .cse5) (or .cse12 .cse22 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18) (not (= |c_ULTIMATE.start_main_~nondetString~0#1.base| |c_ULTIMATE.start_main_~nondetArea~0#1.base|)) (or .cse38 .cse22 .cse39 .cse40 .cse41 .cse42 .cse43) (= |c_ULTIMATE.start_main_~nondetString~0#1.offset| 0) (or .cse29 .cse19 .cse5) (or .cse21 .cse23 .cse24 .cse25 .cse5) (or .cse30 .cse31 .cse32 .cse33 .cse34 (and (<= 0 .cse37) (<= (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| 9) .cse8)) .cse35 .cse36 .cse5) (not (= (select .cse6 (+ |c_ULTIMATE.start_cstrcpy_~from#1.offset| (- 3))) 0))))) is different from true