./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-token-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_31d4261d-9025-4010-bd34-c34464cb0061/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31d4261d-9025-4010-bd34-c34464cb0061/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31d4261d-9025-4010-bd34-c34464cb0061/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31d4261d-9025-4010-bd34-c34464cb0061/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-token-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31d4261d-9025-4010-bd34-c34464cb0061/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31d4261d-9025-4010-bd34-c34464cb0061/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3438cae56d160b7d84eadaf1a799e28d3e56fe8aa8ad4206f8bf5c7c0818717b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:05:59,951 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:06:00,080 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31d4261d-9025-4010-bd34-c34464cb0061/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 21:06:00,091 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:06:00,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:06:00,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:06:00,141 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:06:00,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:06:00,142 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:06:00,150 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:06:00,151 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:06:00,151 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:06:00,152 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:06:00,154 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 21:06:00,154 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:06:00,155 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:06:00,155 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 21:06:00,156 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 21:06:00,156 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:06:00,157 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 21:06:00,157 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 21:06:00,158 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 21:06:00,159 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:06:00,160 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:06:00,161 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:06:00,161 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:06:00,162 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:06:00,162 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:06:00,163 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:06:00,163 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:06:00,165 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:06:00,165 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:06:00,165 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:06:00,166 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:06:00,166 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:06:00,166 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:06:00,166 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:06:00,167 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:06:00,167 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:06:00,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:06:00,168 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:06:00,168 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:06:00,168 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 21:06:00,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:06:00,169 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:06:00,170 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:06:00,170 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_31d4261d-9025-4010-bd34-c34464cb0061/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31d4261d-9025-4010-bd34-c34464cb0061/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3438cae56d160b7d84eadaf1a799e28d3e56fe8aa8ad4206f8bf5c7c0818717b [2023-11-06 21:06:00,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:06:00,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:06:00,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:06:00,550 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:06:00,552 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:06:00,553 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31d4261d-9025-4010-bd34-c34464cb0061/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/forester-heap/sll-token-2.i [2023-11-06 21:06:03,801 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:06:04,048 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:06:04,049 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31d4261d-9025-4010-bd34-c34464cb0061/sv-benchmarks/c/forester-heap/sll-token-2.i [2023-11-06 21:06:04,076 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31d4261d-9025-4010-bd34-c34464cb0061/bin/utaipan-verify-FOvIYxoinp/data/e19dc1b17/9d7cc2c7ff3043af829106455c9f1a05/FLAGfeee128b9 [2023-11-06 21:06:04,095 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31d4261d-9025-4010-bd34-c34464cb0061/bin/utaipan-verify-FOvIYxoinp/data/e19dc1b17/9d7cc2c7ff3043af829106455c9f1a05 [2023-11-06 21:06:04,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:06:04,107 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:06:04,109 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:06:04,109 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:06:04,115 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:06:04,116 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:06:04" (1/1) ... [2023-11-06 21:06:04,117 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1efa36ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:04, skipping insertion in model container [2023-11-06 21:06:04,117 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:06:04" (1/1) ... [2023-11-06 21:06:04,193 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:06:04,532 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:06:04,544 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:06:04,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:06:04,623 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:06:04,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:04 WrapperNode [2023-11-06 21:06:04,624 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:06:04,625 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:06:04,626 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:06:04,626 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:06:04,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:04" (1/1) ... [2023-11-06 21:06:04,670 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:04" (1/1) ... [2023-11-06 21:06:04,708 INFO L138 Inliner]: procedures = 119, calls = 37, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 132 [2023-11-06 21:06:04,709 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:06:04,710 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:06:04,710 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:06:04,710 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:06:04,721 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:04" (1/1) ... [2023-11-06 21:06:04,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:04" (1/1) ... [2023-11-06 21:06:04,745 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:04" (1/1) ... [2023-11-06 21:06:04,746 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:04" (1/1) ... [2023-11-06 21:06:04,754 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:04" (1/1) ... [2023-11-06 21:06:04,764 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:04" (1/1) ... [2023-11-06 21:06:04,772 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:04" (1/1) ... [2023-11-06 21:06:04,784 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:04" (1/1) ... [2023-11-06 21:06:04,787 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:06:04,788 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:06:04,788 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:06:04,788 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:06:04,789 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:04" (1/1) ... [2023-11-06 21:06:04,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:06:04,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31d4261d-9025-4010-bd34-c34464cb0061/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:06:04,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31d4261d-9025-4010-bd34-c34464cb0061/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:06:04,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31d4261d-9025-4010-bd34-c34464cb0061/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:06:04,882 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-06 21:06:04,882 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-06 21:06:04,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:06:04,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:06:04,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:06:04,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:06:04,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 21:06:04,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 21:06:04,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:06:04,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:06:04,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:06:04,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:06:05,033 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:06:05,034 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:06:05,446 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:06:05,536 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:06:05,551 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-06 21:06:05,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:06:05 BoogieIcfgContainer [2023-11-06 21:06:05,555 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:06:05,558 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:06:05,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:06:05,562 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:06:05,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:06:04" (1/3) ... [2023-11-06 21:06:05,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74145a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:06:05, skipping insertion in model container [2023-11-06 21:06:05,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:06:04" (2/3) ... [2023-11-06 21:06:05,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74145a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:06:05, skipping insertion in model container [2023-11-06 21:06:05,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:06:05" (3/3) ... [2023-11-06 21:06:05,571 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-token-2.i [2023-11-06 21:06:05,595 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:06:05,596 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 49 error locations. [2023-11-06 21:06:05,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:06:05,681 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;@13ded5bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 21:06:05,681 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2023-11-06 21:06:05,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 56 states have (on average 2.3214285714285716) internal successors, (130), 105 states have internal predecessors, (130), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-06 21:06:05,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-06 21:06:05,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:06:05,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-06 21:06:05,694 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-11-06 21:06:05,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:06:05,700 INFO L85 PathProgramCache]: Analyzing trace with hash 9065, now seen corresponding path program 1 times [2023-11-06 21:06:05,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:06:05,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477212023] [2023-11-06 21:06:05,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:06:05,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:06:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:06:05,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:06:05,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:06:05,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477212023] [2023-11-06 21:06:05,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477212023] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:06:05,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:06:05,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:06:05,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406441116] [2023-11-06 21:06:05,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:06:05,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:06:05,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:06:05,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:06:05,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:06:05,967 INFO L87 Difference]: Start difference. First operand has 113 states, 56 states have (on average 2.3214285714285716) internal successors, (130), 105 states have internal predecessors, (130), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-06 21:06:06,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:06:06,126 INFO L93 Difference]: Finished difference Result 122 states and 131 transitions. [2023-11-06 21:06:06,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:06:06,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-06 21:06:06,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:06:06,139 INFO L225 Difference]: With dead ends: 122 [2023-11-06 21:06:06,139 INFO L226 Difference]: Without dead ends: 121 [2023-11-06 21:06:06,141 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 [2023-11-06 21:06:06,145 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 80 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:06:06,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 87 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:06:06,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-06 21:06:06,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 102. [2023-11-06 21:06:06,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 100 states have internal predecessors, (103), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:06,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2023-11-06 21:06:06,193 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 2 [2023-11-06 21:06:06,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:06:06,193 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2023-11-06 21:06:06,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-06 21:06:06,194 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2023-11-06 21:06:06,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-06 21:06:06,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:06:06,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-06 21:06:06,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:06:06,195 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-11-06 21:06:06,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:06:06,196 INFO L85 PathProgramCache]: Analyzing trace with hash 9066, now seen corresponding path program 1 times [2023-11-06 21:06:06,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:06:06,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288457114] [2023-11-06 21:06:06,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:06:06,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:06:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:06:06,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:06:06,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:06:06,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288457114] [2023-11-06 21:06:06,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288457114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:06:06,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:06:06,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:06:06,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581722148] [2023-11-06 21:06:06,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:06:06,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:06:06,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:06:06,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:06:06,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:06:06,306 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-06 21:06:06,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:06:06,419 INFO L93 Difference]: Finished difference Result 127 states and 135 transitions. [2023-11-06 21:06:06,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:06:06,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-06 21:06:06,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:06:06,421 INFO L225 Difference]: With dead ends: 127 [2023-11-06 21:06:06,422 INFO L226 Difference]: Without dead ends: 127 [2023-11-06 21:06:06,422 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 [2023-11-06 21:06:06,424 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 86 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:06:06,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 92 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:06:06,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-06 21:06:06,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 100. [2023-11-06 21:06:06,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 49 states have (on average 2.061224489795918) internal successors, (101), 98 states have internal predecessors, (101), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:06,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 107 transitions. [2023-11-06 21:06:06,436 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 107 transitions. Word has length 2 [2023-11-06 21:06:06,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:06:06,436 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 107 transitions. [2023-11-06 21:06:06,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-06 21:06:06,437 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 107 transitions. [2023-11-06 21:06:06,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 21:06:06,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:06:06,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 21:06:06,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:06:06,438 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-11-06 21:06:06,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:06:06,439 INFO L85 PathProgramCache]: Analyzing trace with hash -211222662, now seen corresponding path program 1 times [2023-11-06 21:06:06,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:06:06,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672960120] [2023-11-06 21:06:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:06:06,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:06:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:06:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:06:06,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:06:06,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672960120] [2023-11-06 21:06:06,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672960120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:06:06,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:06:06,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:06:06,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744886926] [2023-11-06 21:06:06,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:06:06,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:06:06,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:06:06,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:06:06,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:06:06,585 INFO L87 Difference]: Start difference. First operand 100 states and 107 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:06,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:06:06,800 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2023-11-06 21:06:06,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:06:06,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-06 21:06:06,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:06:06,808 INFO L225 Difference]: With dead ends: 105 [2023-11-06 21:06:06,808 INFO L226 Difference]: Without dead ends: 105 [2023-11-06 21:06:06,810 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 [2023-11-06 21:06:06,812 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 139 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:06:06,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 65 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:06:06,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-06 21:06:06,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 89. [2023-11-06 21:06:06,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 51 states have (on average 1.803921568627451) internal successors, (92), 87 states have internal predecessors, (92), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:06,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2023-11-06 21:06:06,831 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 6 [2023-11-06 21:06:06,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:06:06,832 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2023-11-06 21:06:06,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:06,833 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2023-11-06 21:06:06,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 21:06:06,833 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:06:06,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 21:06:06,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:06:06,834 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-11-06 21:06:06,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:06:06,836 INFO L85 PathProgramCache]: Analyzing trace with hash -211222661, now seen corresponding path program 1 times [2023-11-06 21:06:06,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:06:06,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569391018] [2023-11-06 21:06:06,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:06:06,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:06:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:06:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:06:07,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:06:07,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569391018] [2023-11-06 21:06:07,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569391018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:06:07,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:06:07,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:06:07,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925904733] [2023-11-06 21:06:07,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:06:07,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:06:07,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:06:07,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:06:07,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:06:07,161 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:07,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:06:07,404 INFO L93 Difference]: Finished difference Result 159 states and 172 transitions. [2023-11-06 21:06:07,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:06:07,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-06 21:06:07,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:06:07,408 INFO L225 Difference]: With dead ends: 159 [2023-11-06 21:06:07,408 INFO L226 Difference]: Without dead ends: 159 [2023-11-06 21:06:07,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:06:07,410 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 159 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:06:07,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 93 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:06:07,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-06 21:06:07,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 116. [2023-11-06 21:06:07,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 78 states have (on average 1.6153846153846154) internal successors, (126), 114 states have internal predecessors, (126), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:07,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 132 transitions. [2023-11-06 21:06:07,436 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 132 transitions. Word has length 6 [2023-11-06 21:06:07,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:06:07,437 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 132 transitions. [2023-11-06 21:06:07,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:07,437 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 132 transitions. [2023-11-06 21:06:07,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 21:06:07,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:06:07,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:06:07,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:06:07,439 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-11-06 21:06:07,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:06:07,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1121258366, now seen corresponding path program 1 times [2023-11-06 21:06:07,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:06:07,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904071158] [2023-11-06 21:06:07,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:06:07,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:06:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:06:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:06:07,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:06:07,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904071158] [2023-11-06 21:06:07,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904071158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:06:07,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:06:07,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:06:07,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741143440] [2023-11-06 21:06:07,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:06:07,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:06:07,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:06:07,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:06:07,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:06:07,610 INFO L87 Difference]: Start difference. First operand 116 states and 132 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:07,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:06:07,797 INFO L93 Difference]: Finished difference Result 115 states and 131 transitions. [2023-11-06 21:06:07,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:06:07,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 21:06:07,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:06:07,799 INFO L225 Difference]: With dead ends: 115 [2023-11-06 21:06:07,799 INFO L226 Difference]: Without dead ends: 115 [2023-11-06 21:06:07,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:06:07,801 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 51 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:06:07,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 139 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:06:07,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-06 21:06:07,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-11-06 21:06:07,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 78 states have (on average 1.6025641025641026) internal successors, (125), 113 states have internal predecessors, (125), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:07,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 131 transitions. [2023-11-06 21:06:07,810 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 131 transitions. Word has length 8 [2023-11-06 21:06:07,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:06:07,810 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 131 transitions. [2023-11-06 21:06:07,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:07,811 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 131 transitions. [2023-11-06 21:06:07,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 21:06:07,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:06:07,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:06:07,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:06:07,812 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-11-06 21:06:07,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:06:07,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1121258365, now seen corresponding path program 1 times [2023-11-06 21:06:07,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:06:07,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439022238] [2023-11-06 21:06:07,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:06:07,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:06:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:06:08,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:06:08,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:06:08,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439022238] [2023-11-06 21:06:08,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439022238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:06:08,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:06:08,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:06:08,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120504911] [2023-11-06 21:06:08,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:06:08,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:06:08,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:06:08,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:06:08,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:06:08,096 INFO L87 Difference]: Start difference. First operand 115 states and 131 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:08,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:06:08,315 INFO L93 Difference]: Finished difference Result 112 states and 128 transitions. [2023-11-06 21:06:08,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:06:08,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 21:06:08,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:06:08,317 INFO L225 Difference]: With dead ends: 112 [2023-11-06 21:06:08,317 INFO L226 Difference]: Without dead ends: 112 [2023-11-06 21:06:08,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:06:08,319 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 11 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:06:08,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 212 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:06:08,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-06 21:06:08,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 102. [2023-11-06 21:06:08,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 71 states have (on average 1.5633802816901408) internal successors, (111), 100 states have internal predecessors, (111), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:08,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2023-11-06 21:06:08,330 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 8 [2023-11-06 21:06:08,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:06:08,330 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2023-11-06 21:06:08,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:08,331 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2023-11-06 21:06:08,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 21:06:08,332 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:06:08,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:06:08,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:06:08,333 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-11-06 21:06:08,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:06:08,334 INFO L85 PathProgramCache]: Analyzing trace with hash -401203476, now seen corresponding path program 1 times [2023-11-06 21:06:08,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:06:08,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956691372] [2023-11-06 21:06:08,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:06:08,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:06:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:06:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:06:08,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:06:08,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956691372] [2023-11-06 21:06:08,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956691372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:06:08,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:06:08,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:06:08,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031835425] [2023-11-06 21:06:08,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:06:08,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:06:08,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:06:08,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:06:08,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:06:08,462 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:08,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:06:08,597 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2023-11-06 21:06:08,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:06:08,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-06 21:06:08,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:06:08,599 INFO L225 Difference]: With dead ends: 101 [2023-11-06 21:06:08,599 INFO L226 Difference]: Without dead ends: 101 [2023-11-06 21:06:08,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:06:08,601 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 3 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:06:08,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 219 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:06:08,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-06 21:06:08,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-11-06 21:06:08,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 71 states have (on average 1.5492957746478873) internal successors, (110), 99 states have internal predecessors, (110), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:08,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2023-11-06 21:06:08,607 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 9 [2023-11-06 21:06:08,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:06:08,608 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2023-11-06 21:06:08,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:08,608 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2023-11-06 21:06:08,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-06 21:06:08,609 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:06:08,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:06:08,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:06:08,610 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-11-06 21:06:08,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:06:08,610 INFO L85 PathProgramCache]: Analyzing trace with hash -401203475, now seen corresponding path program 1 times [2023-11-06 21:06:08,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:06:08,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286342580] [2023-11-06 21:06:08,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:06:08,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:06:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:06:08,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:06:08,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:06:08,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286342580] [2023-11-06 21:06:08,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286342580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:06:08,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:06:08,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:06:08,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072666590] [2023-11-06 21:06:08,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:06:08,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:06:08,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:06:08,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:06:08,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:06:08,789 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:08,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:06:08,929 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2023-11-06 21:06:08,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:06:08,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-06 21:06:08,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:06:08,930 INFO L225 Difference]: With dead ends: 100 [2023-11-06 21:06:08,931 INFO L226 Difference]: Without dead ends: 100 [2023-11-06 21:06:08,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:06:08,932 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 1 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:06:08,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 221 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:06:08,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-06 21:06:08,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-11-06 21:06:08,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 71 states have (on average 1.5352112676056338) internal successors, (109), 98 states have internal predecessors, (109), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:08,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2023-11-06 21:06:08,938 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 9 [2023-11-06 21:06:08,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:06:08,938 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2023-11-06 21:06:08,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:08,939 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2023-11-06 21:06:08,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 21:06:08,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:06:08,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:06:08,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:06:08,940 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-11-06 21:06:08,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:06:08,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1916612248, now seen corresponding path program 1 times [2023-11-06 21:06:08,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:06:08,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977754661] [2023-11-06 21:06:08,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:06:08,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:06:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:06:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:06:09,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:06:09,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977754661] [2023-11-06 21:06:09,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977754661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:06:09,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:06:09,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:06:09,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541447662] [2023-11-06 21:06:09,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:06:09,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:06:09,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:06:09,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:06:09,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:06:09,094 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:09,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:06:09,227 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2023-11-06 21:06:09,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:06:09,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-06 21:06:09,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:06:09,232 INFO L225 Difference]: With dead ends: 107 [2023-11-06 21:06:09,232 INFO L226 Difference]: Without dead ends: 107 [2023-11-06 21:06:09,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:06:09,235 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 9 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:06:09,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 229 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:06:09,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-06 21:06:09,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2023-11-06 21:06:09,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 71 states have (on average 1.5211267605633803) internal successors, (108), 97 states have internal predecessors, (108), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:09,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2023-11-06 21:06:09,242 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 12 [2023-11-06 21:06:09,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:06:09,243 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2023-11-06 21:06:09,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:09,243 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2023-11-06 21:06:09,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 21:06:09,244 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:06:09,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:06:09,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:06:09,245 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-11-06 21:06:09,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:06:09,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1419473554, now seen corresponding path program 1 times [2023-11-06 21:06:09,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:06:09,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826224506] [2023-11-06 21:06:09,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:06:09,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:06:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:06:09,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:06:09,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:06:09,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826224506] [2023-11-06 21:06:09,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826224506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:06:09,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:06:09,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:06:09,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286706270] [2023-11-06 21:06:09,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:06:09,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:06:09,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:06:09,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:06:09,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:06:09,370 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:09,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:06:09,478 INFO L93 Difference]: Finished difference Result 145 states and 157 transitions. [2023-11-06 21:06:09,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:06:09,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-06 21:06:09,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:06:09,480 INFO L225 Difference]: With dead ends: 145 [2023-11-06 21:06:09,481 INFO L226 Difference]: Without dead ends: 145 [2023-11-06 21:06:09,481 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 [2023-11-06 21:06:09,482 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 140 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:06:09,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 122 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:06:09,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-06 21:06:09,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 98. [2023-11-06 21:06:09,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 71 states have (on average 1.5070422535211268) internal successors, (107), 96 states have internal predecessors, (107), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:09,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2023-11-06 21:06:09,487 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 13 [2023-11-06 21:06:09,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:06:09,487 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2023-11-06 21:06:09,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:09,487 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2023-11-06 21:06:09,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 21:06:09,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:06:09,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:06:09,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:06:09,489 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-11-06 21:06:09,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:06:09,490 INFO L85 PathProgramCache]: Analyzing trace with hash 316036739, now seen corresponding path program 1 times [2023-11-06 21:06:09,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:06:09,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16718232] [2023-11-06 21:06:09,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:06:09,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:06:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:06:09,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:06:09,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:06:09,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16718232] [2023-11-06 21:06:09,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16718232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:06:09,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:06:09,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:06:09,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413137742] [2023-11-06 21:06:09,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:06:09,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:06:09,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:06:09,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:06:09,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:06:09,572 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:09,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:06:09,715 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2023-11-06 21:06:09,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:06:09,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-06 21:06:09,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:06:09,725 INFO L225 Difference]: With dead ends: 97 [2023-11-06 21:06:09,726 INFO L226 Difference]: Without dead ends: 97 [2023-11-06 21:06:09,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:06:09,727 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 6 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:06:09,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 189 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:06:09,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-06 21:06:09,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-11-06 21:06:09,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 71 states have (on average 1.4788732394366197) internal successors, (105), 95 states have internal predecessors, (105), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:09,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2023-11-06 21:06:09,735 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 18 [2023-11-06 21:06:09,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:06:09,735 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2023-11-06 21:06:09,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:09,736 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2023-11-06 21:06:09,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 21:06:09,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:06:09,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:06:09,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:06:09,737 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-11-06 21:06:09,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:06:09,738 INFO L85 PathProgramCache]: Analyzing trace with hash 347553695, now seen corresponding path program 1 times [2023-11-06 21:06:09,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:06:09,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109118850] [2023-11-06 21:06:09,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:06:09,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:06:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:06:10,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:06:10,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:06:10,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109118850] [2023-11-06 21:06:10,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109118850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:06:10,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:06:10,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 21:06:10,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448383194] [2023-11-06 21:06:10,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:06:10,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 21:06:10,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:06:10,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 21:06:10,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:06:10,449 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:10,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:06:10,880 INFO L93 Difference]: Finished difference Result 124 states and 132 transitions. [2023-11-06 21:06:10,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:06:10,880 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-06 21:06:10,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:06:10,882 INFO L225 Difference]: With dead ends: 124 [2023-11-06 21:06:10,882 INFO L226 Difference]: Without dead ends: 124 [2023-11-06 21:06:10,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:06:10,883 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 166 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:06:10,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 314 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:06:10,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-06 21:06:10,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 107. [2023-11-06 21:06:10,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 105 states have internal predecessors, (116), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:10,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 119 transitions. [2023-11-06 21:06:10,888 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 119 transitions. Word has length 18 [2023-11-06 21:06:10,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:06:10,888 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 119 transitions. [2023-11-06 21:06:10,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:10,889 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 119 transitions. [2023-11-06 21:06:10,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 21:06:10,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:06:10,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:06:10,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 21:06:10,890 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-11-06 21:06:10,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:06:10,891 INFO L85 PathProgramCache]: Analyzing trace with hash 316066779, now seen corresponding path program 1 times [2023-11-06 21:06:10,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:06:10,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248296819] [2023-11-06 21:06:10,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:06:10,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:06:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:06:11,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:06:11,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:06:11,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248296819] [2023-11-06 21:06:11,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248296819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:06:11,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:06:11,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:06:11,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532363365] [2023-11-06 21:06:11,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:06:11,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:06:11,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:06:11,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:06:11,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:06:11,157 INFO L87 Difference]: Start difference. First operand 107 states and 119 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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) [2023-11-06 21:06:11,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:06:11,483 INFO L93 Difference]: Finished difference Result 126 states and 134 transitions. [2023-11-06 21:06:11,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:06:11,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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 18 [2023-11-06 21:06:11,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:06:11,485 INFO L225 Difference]: With dead ends: 126 [2023-11-06 21:06:11,485 INFO L226 Difference]: Without dead ends: 126 [2023-11-06 21:06:11,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:06:11,486 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 123 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:06:11,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 168 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:06:11,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-06 21:06:11,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 112. [2023-11-06 21:06:11,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 86 states have (on average 1.4186046511627908) internal successors, (122), 110 states have internal predecessors, (122), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:11,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 125 transitions. [2023-11-06 21:06:11,491 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 125 transitions. Word has length 18 [2023-11-06 21:06:11,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:06:11,491 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 125 transitions. [2023-11-06 21:06:11,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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) [2023-11-06 21:06:11,491 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 125 transitions. [2023-11-06 21:06:11,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 21:06:11,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:06:11,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:06:11,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 21:06:11,493 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-11-06 21:06:11,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:06:11,493 INFO L85 PathProgramCache]: Analyzing trace with hash 316066780, now seen corresponding path program 1 times [2023-11-06 21:06:11,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:06:11,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874995314] [2023-11-06 21:06:11,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:06:11,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:06:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:06:11,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:06:11,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:06:11,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874995314] [2023-11-06 21:06:11,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874995314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:06:11,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:06:11,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:06:11,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719406896] [2023-11-06 21:06:11,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:06:11,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:06:11,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:06:11,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:06:11,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:06:11,873 INFO L87 Difference]: Start difference. First operand 112 states and 125 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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) [2023-11-06 21:06:12,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:06:12,142 INFO L93 Difference]: Finished difference Result 129 states and 138 transitions. [2023-11-06 21:06:12,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:06:12,145 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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 18 [2023-11-06 21:06:12,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:06:12,146 INFO L225 Difference]: With dead ends: 129 [2023-11-06 21:06:12,146 INFO L226 Difference]: Without dead ends: 129 [2023-11-06 21:06:12,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:06:12,147 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 54 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:06:12,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 227 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:06:12,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-06 21:06:12,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 112. [2023-11-06 21:06:12,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 86 states have (on average 1.4069767441860466) internal successors, (121), 110 states have internal predecessors, (121), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:12,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2023-11-06 21:06:12,151 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 18 [2023-11-06 21:06:12,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:06:12,151 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2023-11-06 21:06:12,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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) [2023-11-06 21:06:12,154 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2023-11-06 21:06:12,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-06 21:06:12,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:06:12,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:06:12,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 21:06:12,158 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-11-06 21:06:12,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:06:12,159 INFO L85 PathProgramCache]: Analyzing trace with hash -255328559, now seen corresponding path program 1 times [2023-11-06 21:06:12,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:06:12,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520924872] [2023-11-06 21:06:12,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:06:12,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:06:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:06:12,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:06:12,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:06:12,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520924872] [2023-11-06 21:06:12,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520924872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:06:12,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:06:12,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 21:06:12,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281901292] [2023-11-06 21:06:12,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:06:12,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:06:12,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 21:06:12,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:06:12,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:06:12,744 INFO L87 Difference]: Start difference. First operand 112 states and 124 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:13,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:06:13,059 INFO L93 Difference]: Finished difference Result 128 states and 136 transitions. [2023-11-06 21:06:13,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:06:13,060 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-06 21:06:13,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:06:13,061 INFO L225 Difference]: With dead ends: 128 [2023-11-06 21:06:13,061 INFO L226 Difference]: Without dead ends: 128 [2023-11-06 21:06:13,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-06 21:06:13,062 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 123 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:06:13,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 286 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 21:06:13,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-06 21:06:13,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 113. [2023-11-06 21:06:13,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 87 states have (on average 1.4022988505747127) internal successors, (122), 111 states have internal predecessors, (122), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:13,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2023-11-06 21:06:13,066 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 22 [2023-11-06 21:06:13,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:06:13,067 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2023-11-06 21:06:13,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:06:13,067 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2023-11-06 21:06:13,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-06 21:06:13,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:06:13,068 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:06:13,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 21:06:13,069 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 46 more)] === [2023-11-06 21:06:13,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:06:13,069 INFO L85 PathProgramCache]: Analyzing trace with hash -818861221, now seen corresponding path program 1 times [2023-11-06 21:06:13,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 21:06:13,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442673158] [2023-11-06 21:06:13,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:06:13,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:06:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:06:13,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:06:13,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 21:06:13,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442673158] [2023-11-06 21:06:13,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442673158] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:06:13,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402883101] [2023-11-06 21:06:13,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:06:13,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:06:13,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31d4261d-9025-4010-bd34-c34464cb0061/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:06:13,747 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31d4261d-9025-4010-bd34-c34464cb0061/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:06:13,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31d4261d-9025-4010-bd34-c34464cb0061/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:06:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:06:13,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-06 21:06:13,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:06:13,968 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 21:06:13,989 INFO L351 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 11 treesize of output 7 [2023-11-06 21:06:14,074 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 21:06:14,075 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-06 21:06:14,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:06:14,134 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-06 21:06:14,153 INFO L351 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 15 treesize of output 1 [2023-11-06 21:06:14,207 INFO L351 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 16 treesize of output 8 [2023-11-06 21:06:14,234 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:06:14,325 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 21:06:14,326 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-06 21:06:14,334 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:06:14,363 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:06:14,378 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 21:06:14,423 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-06 21:06:14,445 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:06:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:06:14,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:06:14,532 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_470 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_470) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0)) is different from false [2023-11-06 21:06:14,541 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_470 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_470) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 0)) is different from false [2023-11-06 21:06:14,766 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-06 21:06:14,766 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2023-11-06 21:06:14,961 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:06:14,964 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2023-11-06 21:06:14,976 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:06:14,979 INFO L351 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 [2023-11-06 21:06:15,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:06:15,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402883101] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:06:15,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [497498125] [2023-11-06 21:06:15,027 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-11-06 21:06:15,028 INFO L166 IcfgInterpreter]: Building call graph [2023-11-06 21:06:15,032 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-06 21:06:15,037 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-06 21:06:15,038 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-06 21:06:21,933 INFO L197 IcfgInterpreter]: Interpreting procedure reach_error with input of size 106 for LOIs [2023-11-06 21:06:21,966 INFO L180 IcfgInterpreter]: Interpretation finished