./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_ae5432dc-4b76-4e27-aa7a-88af190941eb/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5432dc-4b76-4e27-aa7a-88af190941eb/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5432dc-4b76-4e27-aa7a-88af190941eb/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5432dc-4b76-4e27-aa7a-88af190941eb/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5432dc-4b76-4e27-aa7a-88af190941eb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5432dc-4b76-4e27-aa7a-88af190941eb/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e486f0f9d7d5faf0af2c33128bdcb8eeb95bb04afff03e23e86c60ceb8da8466 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:16:30,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:16:30,895 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5432dc-4b76-4e27-aa7a-88af190941eb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 19:16:30,900 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:16:30,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:16:30,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:16:30,923 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:16:30,924 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:16:30,924 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:16:30,925 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:16:30,925 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:16:30,926 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:16:30,926 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:16:30,927 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:16:30,927 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:16:30,928 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:16:30,928 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:16:30,929 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:16:30,929 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:16:30,930 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:16:30,930 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:16:30,932 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:16:30,933 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 19:16:30,934 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 19:16:30,934 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:16:30,935 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:16:30,935 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:16:30,935 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:16:30,936 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:16:30,936 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 19:16:30,936 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 19:16:30,937 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 19:16:30,937 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:16:30,937 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 19:16:30,938 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 19:16:30,938 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:16:30,938 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:16:30,938 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:16:30,939 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:16:30,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:16:30,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:16:30,939 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:16:30,939 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:16:30,940 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:16:30,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:16:30,940 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:16:30,941 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:16:30,941 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:16:30,941 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_ae5432dc-4b76-4e27-aa7a-88af190941eb/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5432dc-4b76-4e27-aa7a-88af190941eb/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e486f0f9d7d5faf0af2c33128bdcb8eeb95bb04afff03e23e86c60ceb8da8466 [2023-12-02 19:16:31,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:16:31,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:16:31,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:16:31,159 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:16:31,159 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:16:31,161 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5432dc-4b76-4e27-aa7a-88af190941eb/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+nlh-reducer.c [2023-12-02 19:16:33,913 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:16:34,150 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:16:34,150 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5432dc-4b76-4e27-aa7a-88af190941eb/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+nlh-reducer.c [2023-12-02 19:16:34,166 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5432dc-4b76-4e27-aa7a-88af190941eb/bin/utaipan-verify-nQ1chXbOIh/data/88352d5a1/857b0d1deaa4467da78b2e79b76e7a06/FLAG3e6c6e27d [2023-12-02 19:16:34,180 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5432dc-4b76-4e27-aa7a-88af190941eb/bin/utaipan-verify-nQ1chXbOIh/data/88352d5a1/857b0d1deaa4467da78b2e79b76e7a06 [2023-12-02 19:16:34,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:16:34,184 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:16:34,185 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:16:34,185 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:16:34,190 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:16:34,191 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:16:34" (1/1) ... [2023-12-02 19:16:34,192 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418aed5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:16:34, skipping insertion in model container [2023-12-02 19:16:34,192 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:16:34" (1/1) ... [2023-12-02 19:16:34,259 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:16:34,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:16:34,665 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:16:34,813 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:16:34,821 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:16:34,829 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:16:34,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:16:34 WrapperNode [2023-12-02 19:16:34,829 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:16:34,830 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:16:34,830 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:16:34,831 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:16:34,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:16:34" (1/1) ... [2023-12-02 19:16:34,860 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:16:34" (1/1) ... [2023-12-02 19:16:34,918 INFO L138 Inliner]: procedures = 17, calls = 621, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2244 [2023-12-02 19:16:34,918 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:16:34,919 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:16:34,919 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:16:34,919 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:16:34,930 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:16:34" (1/1) ... [2023-12-02 19:16:34,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:16:34" (1/1) ... [2023-12-02 19:16:34,942 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:16:34" (1/1) ... [2023-12-02 19:16:34,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:16:34" (1/1) ... [2023-12-02 19:16:34,992 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:16:34" (1/1) ... [2023-12-02 19:16:35,001 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:16:34" (1/1) ... [2023-12-02 19:16:35,007 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:16:34" (1/1) ... [2023-12-02 19:16:35,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:16:34" (1/1) ... [2023-12-02 19:16:35,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:16:35,028 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:16:35,028 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:16:35,028 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:16:35,029 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:16:34" (1/1) ... [2023-12-02 19:16:35,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:16:35,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5432dc-4b76-4e27-aa7a-88af190941eb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:16:35,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5432dc-4b76-4e27-aa7a-88af190941eb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:16:35,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5432dc-4b76-4e27-aa7a-88af190941eb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:16:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 19:16:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-12-02 19:16:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:16:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:16:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:16:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:16:35,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:16:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 19:16:35,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:16:35,250 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:16:35,252 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:16:36,480 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:16:36,565 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:16:36,565 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 19:16:36,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:16:36 BoogieIcfgContainer [2023-12-02 19:16:36,567 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:16:36,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:16:36,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:16:36,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:16:36,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:16:34" (1/3) ... [2023-12-02 19:16:36,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa8e8dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:16:36, skipping insertion in model container [2023-12-02 19:16:36,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:16:34" (2/3) ... [2023-12-02 19:16:36,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa8e8dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:16:36, skipping insertion in model container [2023-12-02 19:16:36,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:16:36" (3/3) ... [2023-12-02 19:16:36,575 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+nlh-reducer.c [2023-12-02 19:16:36,591 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:16:36,591 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 168 error locations. [2023-12-02 19:16:36,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:16:36,646 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;@1e49574b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:16:36,646 INFO L358 AbstractCegarLoop]: Starting to check reachability of 168 error locations. [2023-12-02 19:16:36,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 427 states, 258 states have (on average 2.317829457364341) internal successors, (598), 426 states have internal predecessors, (598), 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) [2023-12-02 19:16:36,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 19:16:36,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:36,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 19:16:36,657 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr167ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:36,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:36,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1186226, now seen corresponding path program 1 times [2023-12-02 19:16:36,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:36,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011987465] [2023-12-02 19:16:36,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:36,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:36,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:36,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:36,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011987465] [2023-12-02 19:16:36,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011987465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:36,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:36,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:16:36,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963595137] [2023-12-02 19:16:36,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:36,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:16:36,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:37,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:16:37,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:16:37,021 INFO L87 Difference]: Start difference. First operand has 427 states, 258 states have (on average 2.317829457364341) internal successors, (598), 426 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:37,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:37,725 INFO L93 Difference]: Finished difference Result 428 states and 555 transitions. [2023-12-02 19:16:37,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:16:37,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 19:16:37,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:37,740 INFO L225 Difference]: With dead ends: 428 [2023-12-02 19:16:37,740 INFO L226 Difference]: Without dead ends: 426 [2023-12-02 19:16:37,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:16:37,745 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 124 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:37,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 937 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 19:16:37,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-12-02 19:16:37,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2023-12-02 19:16:37,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 258 states have (on average 2.13953488372093) internal successors, (552), 425 states have internal predecessors, (552), 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) [2023-12-02 19:16:37,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 552 transitions. [2023-12-02 19:16:37,801 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 552 transitions. Word has length 3 [2023-12-02 19:16:37,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:37,801 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 552 transitions. [2023-12-02 19:16:37,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:37,801 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 552 transitions. [2023-12-02 19:16:37,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 19:16:37,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:37,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 19:16:37,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:16:37,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:37,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:37,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1185139, now seen corresponding path program 1 times [2023-12-02 19:16:37,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:37,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027858508] [2023-12-02 19:16:37,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:37,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:37,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:37,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:37,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:37,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027858508] [2023-12-02 19:16:37,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027858508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:37,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:37,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:16:37,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725464482] [2023-12-02 19:16:37,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:37,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:16:37,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:37,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:16:37,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:16:37,869 INFO L87 Difference]: Start difference. First operand 426 states and 552 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:38,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:38,423 INFO L93 Difference]: Finished difference Result 385 states and 511 transitions. [2023-12-02 19:16:38,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:16:38,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 19:16:38,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:38,427 INFO L225 Difference]: With dead ends: 385 [2023-12-02 19:16:38,427 INFO L226 Difference]: Without dead ends: 385 [2023-12-02 19:16:38,427 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 [2023-12-02 19:16:38,429 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 759 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:38,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 215 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:16:38,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-12-02 19:16:38,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2023-12-02 19:16:38,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 258 states have (on average 1.9806201550387597) internal successors, (511), 384 states have internal predecessors, (511), 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) [2023-12-02 19:16:38,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 511 transitions. [2023-12-02 19:16:38,448 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 511 transitions. Word has length 3 [2023-12-02 19:16:38,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:38,449 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 511 transitions. [2023-12-02 19:16:38,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:38,449 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 511 transitions. [2023-12-02 19:16:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 19:16:38,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:38,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 19:16:38,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:16:38,450 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:38,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:38,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1185140, now seen corresponding path program 1 times [2023-12-02 19:16:38,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:38,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360091046] [2023-12-02 19:16:38,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:38,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:38,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:38,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:38,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360091046] [2023-12-02 19:16:38,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360091046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:38,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:38,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:16:38,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583980233] [2023-12-02 19:16:38,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:38,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:16:38,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:38,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:16:38,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:16:38,583 INFO L87 Difference]: Start difference. First operand 385 states and 511 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:39,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:39,009 INFO L93 Difference]: Finished difference Result 344 states and 470 transitions. [2023-12-02 19:16:39,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:16:39,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 19:16:39,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:39,012 INFO L225 Difference]: With dead ends: 344 [2023-12-02 19:16:39,012 INFO L226 Difference]: Without dead ends: 344 [2023-12-02 19:16:39,012 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 [2023-12-02 19:16:39,014 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 508 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:39,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 558 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:16:39,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-12-02 19:16:39,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2023-12-02 19:16:39,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 258 states have (on average 1.821705426356589) internal successors, (470), 343 states have internal predecessors, (470), 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) [2023-12-02 19:16:39,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 470 transitions. [2023-12-02 19:16:39,025 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 470 transitions. Word has length 3 [2023-12-02 19:16:39,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:39,025 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 470 transitions. [2023-12-02 19:16:39,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:39,025 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 470 transitions. [2023-12-02 19:16:39,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-02 19:16:39,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:39,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:39,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:16:39,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr167ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:39,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:39,028 INFO L85 PathProgramCache]: Analyzing trace with hash -150081525, now seen corresponding path program 1 times [2023-12-02 19:16:39,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:39,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636455519] [2023-12-02 19:16:39,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:39,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:39,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:39,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:39,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636455519] [2023-12-02 19:16:39,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636455519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:39,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:39,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:16:39,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438102398] [2023-12-02 19:16:39,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:39,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:16:39,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:39,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:16:39,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:16:39,336 INFO L87 Difference]: Start difference. First operand 344 states and 470 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:39,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:39,631 INFO L93 Difference]: Finished difference Result 346 states and 470 transitions. [2023-12-02 19:16:39,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:16:39,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-02 19:16:39,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:39,635 INFO L225 Difference]: With dead ends: 346 [2023-12-02 19:16:39,635 INFO L226 Difference]: Without dead ends: 346 [2023-12-02 19:16:39,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:16:39,637 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 49 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:39,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 676 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:16:39,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-12-02 19:16:39,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 344. [2023-12-02 19:16:39,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 258 states have (on average 1.817829457364341) internal successors, (469), 343 states have internal predecessors, (469), 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) [2023-12-02 19:16:39,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 469 transitions. [2023-12-02 19:16:39,647 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 469 transitions. Word has length 46 [2023-12-02 19:16:39,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:39,648 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 469 transitions. [2023-12-02 19:16:39,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:39,648 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 469 transitions. [2023-12-02 19:16:39,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 19:16:39,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:39,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:39,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 19:16:39,650 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr167ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:39,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:39,651 INFO L85 PathProgramCache]: Analyzing trace with hash -358528036, now seen corresponding path program 1 times [2023-12-02 19:16:39,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:39,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834353843] [2023-12-02 19:16:39,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:39,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:39,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:39,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:39,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834353843] [2023-12-02 19:16:39,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834353843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:39,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:39,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:16:39,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64563088] [2023-12-02 19:16:39,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:39,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:16:39,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:39,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:16:39,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:16:39,881 INFO L87 Difference]: Start difference. First operand 344 states and 469 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2023-12-02 19:16:39,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:39,971 INFO L93 Difference]: Finished difference Result 344 states and 468 transitions. [2023-12-02 19:16:39,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:16:39,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2023-12-02 19:16:39,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:39,974 INFO L225 Difference]: With dead ends: 344 [2023-12-02 19:16:39,974 INFO L226 Difference]: Without dead ends: 344 [2023-12-02 19:16:39,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:16:39,975 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 423 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:39,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 427 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:16:39,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-12-02 19:16:39,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2023-12-02 19:16:39,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 258 states have (on average 1.813953488372093) internal successors, (468), 343 states have internal predecessors, (468), 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) [2023-12-02 19:16:39,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 468 transitions. [2023-12-02 19:16:39,985 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 468 transitions. Word has length 47 [2023-12-02 19:16:39,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:39,986 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 468 transitions. [2023-12-02 19:16:39,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2023-12-02 19:16:39,986 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 468 transitions. [2023-12-02 19:16:39,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 19:16:39,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:39,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:39,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 19:16:39,988 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:39,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:39,988 INFO L85 PathProgramCache]: Analyzing trace with hash -358528948, now seen corresponding path program 1 times [2023-12-02 19:16:39,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:39,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191542655] [2023-12-02 19:16:39,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:39,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:40,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:40,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191542655] [2023-12-02 19:16:40,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191542655] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:40,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:40,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:16:40,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845997790] [2023-12-02 19:16:40,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:40,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:16:40,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:40,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:16:40,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:16:40,203 INFO L87 Difference]: Start difference. First operand 344 states and 468 transitions. Second operand has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 4 states have internal predecessors, (47), 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) [2023-12-02 19:16:40,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:40,725 INFO L93 Difference]: Finished difference Result 343 states and 467 transitions. [2023-12-02 19:16:40,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:16:40,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2023-12-02 19:16:40,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:40,728 INFO L225 Difference]: With dead ends: 343 [2023-12-02 19:16:40,728 INFO L226 Difference]: Without dead ends: 343 [2023-12-02 19:16:40,729 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 [2023-12-02 19:16:40,730 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 589 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:40,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 177 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:16:40,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-12-02 19:16:40,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2023-12-02 19:16:40,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 258 states have (on average 1.810077519379845) internal successors, (467), 342 states have internal predecessors, (467), 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) [2023-12-02 19:16:40,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 467 transitions. [2023-12-02 19:16:40,739 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 467 transitions. Word has length 47 [2023-12-02 19:16:40,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:40,740 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 467 transitions. [2023-12-02 19:16:40,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 4 states have internal predecessors, (47), 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) [2023-12-02 19:16:40,740 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 467 transitions. [2023-12-02 19:16:40,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 19:16:40,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:40,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:40,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 19:16:40,742 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:40,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:40,742 INFO L85 PathProgramCache]: Analyzing trace with hash -358528947, now seen corresponding path program 1 times [2023-12-02 19:16:40,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:40,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177725471] [2023-12-02 19:16:40,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:40,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:41,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:41,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177725471] [2023-12-02 19:16:41,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177725471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:41,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:41,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:16:41,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931953690] [2023-12-02 19:16:41,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:41,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:16:41,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:41,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:16:41,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:16:41,143 INFO L87 Difference]: Start difference. First operand 343 states and 467 transitions. Second operand has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 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) [2023-12-02 19:16:42,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:42,062 INFO L93 Difference]: Finished difference Result 342 states and 466 transitions. [2023-12-02 19:16:42,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:16:42,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 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 47 [2023-12-02 19:16:42,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:42,065 INFO L225 Difference]: With dead ends: 342 [2023-12-02 19:16:42,065 INFO L226 Difference]: Without dead ends: 342 [2023-12-02 19:16:42,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:16:42,066 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 882 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:42,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 222 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 19:16:42,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-12-02 19:16:42,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2023-12-02 19:16:42,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 258 states have (on average 1.806201550387597) internal successors, (466), 341 states have internal predecessors, (466), 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) [2023-12-02 19:16:42,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 466 transitions. [2023-12-02 19:16:42,076 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 466 transitions. Word has length 47 [2023-12-02 19:16:42,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:42,076 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 466 transitions. [2023-12-02 19:16:42,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 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) [2023-12-02 19:16:42,076 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 466 transitions. [2023-12-02 19:16:42,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 19:16:42,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:42,077 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:42,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 19:16:42,078 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr167ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:42,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:42,078 INFO L85 PathProgramCache]: Analyzing trace with hash -948899439, now seen corresponding path program 1 times [2023-12-02 19:16:42,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:42,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549594077] [2023-12-02 19:16:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:42,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:42,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:42,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:42,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549594077] [2023-12-02 19:16:42,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549594077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:42,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:42,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:16:42,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995769884] [2023-12-02 19:16:42,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:42,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 19:16:42,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:42,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 19:16:42,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:16:42,767 INFO L87 Difference]: Start difference. First operand 342 states and 466 transitions. Second operand has 8 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:43,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:43,661 INFO L93 Difference]: Finished difference Result 341 states and 465 transitions. [2023-12-02 19:16:43,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:16:43,662 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-02 19:16:43,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:43,664 INFO L225 Difference]: With dead ends: 341 [2023-12-02 19:16:43,664 INFO L226 Difference]: Without dead ends: 340 [2023-12-02 19:16:43,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:16:43,665 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 293 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:43,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 513 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 19:16:43,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2023-12-02 19:16:43,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2023-12-02 19:16:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 257 states have (on average 1.3190661478599222) internal successors, (339), 339 states have internal predecessors, (339), 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) [2023-12-02 19:16:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 339 transitions. [2023-12-02 19:16:43,674 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 339 transitions. Word has length 49 [2023-12-02 19:16:43,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:43,675 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 339 transitions. [2023-12-02 19:16:43,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:43,675 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 339 transitions. [2023-12-02 19:16:43,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 19:16:43,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:43,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:43,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 19:16:43,676 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:43,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:43,677 INFO L85 PathProgramCache]: Analyzing trace with hash -107334314, now seen corresponding path program 1 times [2023-12-02 19:16:43,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:43,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229725251] [2023-12-02 19:16:43,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:43,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:43,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:43,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:43,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229725251] [2023-12-02 19:16:43,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229725251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:43,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:43,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:16:43,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297872322] [2023-12-02 19:16:43,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:43,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:16:43,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:43,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:16:43,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:16:43,929 INFO L87 Difference]: Start difference. First operand 340 states and 339 transitions. Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 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) [2023-12-02 19:16:44,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:44,248 INFO L93 Difference]: Finished difference Result 339 states and 338 transitions. [2023-12-02 19:16:44,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:16:44,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 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 52 [2023-12-02 19:16:44,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:44,250 INFO L225 Difference]: With dead ends: 339 [2023-12-02 19:16:44,250 INFO L226 Difference]: Without dead ends: 339 [2023-12-02 19:16:44,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:16:44,251 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 870 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:44,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 180 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:16:44,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-12-02 19:16:44,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2023-12-02 19:16:44,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 257 states have (on average 1.3151750972762646) internal successors, (338), 338 states have internal predecessors, (338), 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) [2023-12-02 19:16:44,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 338 transitions. [2023-12-02 19:16:44,259 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 338 transitions. Word has length 52 [2023-12-02 19:16:44,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:44,260 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 338 transitions. [2023-12-02 19:16:44,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 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) [2023-12-02 19:16:44,260 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 338 transitions. [2023-12-02 19:16:44,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 19:16:44,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:44,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:44,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 19:16:44,261 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:44,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:44,262 INFO L85 PathProgramCache]: Analyzing trace with hash -107334313, now seen corresponding path program 1 times [2023-12-02 19:16:44,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:44,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732667902] [2023-12-02 19:16:44,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:44,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:44,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:44,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732667902] [2023-12-02 19:16:44,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732667902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:44,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:44,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:16:44,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20508726] [2023-12-02 19:16:44,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:44,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:16:44,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:44,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:16:44,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:16:44,697 INFO L87 Difference]: Start difference. First operand 339 states and 338 transitions. Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 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) [2023-12-02 19:16:45,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:45,249 INFO L93 Difference]: Finished difference Result 338 states and 337 transitions. [2023-12-02 19:16:45,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:16:45,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 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 52 [2023-12-02 19:16:45,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:45,251 INFO L225 Difference]: With dead ends: 338 [2023-12-02 19:16:45,251 INFO L226 Difference]: Without dead ends: 338 [2023-12-02 19:16:45,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:16:45,252 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 740 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:45,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 220 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:16:45,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-12-02 19:16:45,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2023-12-02 19:16:45,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 257 states have (on average 1.311284046692607) internal successors, (337), 337 states have internal predecessors, (337), 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) [2023-12-02 19:16:45,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 337 transitions. [2023-12-02 19:16:45,260 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 337 transitions. Word has length 52 [2023-12-02 19:16:45,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:45,260 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 337 transitions. [2023-12-02 19:16:45,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 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) [2023-12-02 19:16:45,260 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 337 transitions. [2023-12-02 19:16:45,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-02 19:16:45,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:45,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:45,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 19:16:45,262 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:45,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:45,262 INFO L85 PathProgramCache]: Analyzing trace with hash 70609501, now seen corresponding path program 1 times [2023-12-02 19:16:45,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:45,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870440141] [2023-12-02 19:16:45,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:45,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:45,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:45,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870440141] [2023-12-02 19:16:45,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870440141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:45,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:45,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:16:45,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387332531] [2023-12-02 19:16:45,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:45,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:16:45,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:45,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:16:45,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:16:45,476 INFO L87 Difference]: Start difference. First operand 338 states and 337 transitions. Second operand has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 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) [2023-12-02 19:16:45,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:45,787 INFO L93 Difference]: Finished difference Result 337 states and 336 transitions. [2023-12-02 19:16:45,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:16:45,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 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 57 [2023-12-02 19:16:45,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:45,789 INFO L225 Difference]: With dead ends: 337 [2023-12-02 19:16:45,789 INFO L226 Difference]: Without dead ends: 337 [2023-12-02 19:16:45,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:16:45,790 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 854 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:45,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 182 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:16:45,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-12-02 19:16:45,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2023-12-02 19:16:45,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 257 states have (on average 1.3073929961089494) internal successors, (336), 336 states have internal predecessors, (336), 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) [2023-12-02 19:16:45,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 336 transitions. [2023-12-02 19:16:45,796 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 336 transitions. Word has length 57 [2023-12-02 19:16:45,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:45,797 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 336 transitions. [2023-12-02 19:16:45,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 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) [2023-12-02 19:16:45,797 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 336 transitions. [2023-12-02 19:16:45,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-02 19:16:45,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:45,798 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:45,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 19:16:45,798 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:45,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:45,798 INFO L85 PathProgramCache]: Analyzing trace with hash 70609502, now seen corresponding path program 1 times [2023-12-02 19:16:45,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:45,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411785141] [2023-12-02 19:16:45,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:45,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:46,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:46,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411785141] [2023-12-02 19:16:46,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411785141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:46,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:46,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:16:46,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976113344] [2023-12-02 19:16:46,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:46,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:16:46,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:46,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:16:46,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:16:46,194 INFO L87 Difference]: Start difference. First operand 337 states and 336 transitions. Second operand has 7 states, 6 states have (on average 9.5) internal successors, (57), 7 states have internal predecessors, (57), 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) [2023-12-02 19:16:46,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:46,801 INFO L93 Difference]: Finished difference Result 336 states and 335 transitions. [2023-12-02 19:16:46,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:16:46,802 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 7 states have internal predecessors, (57), 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 57 [2023-12-02 19:16:46,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:46,804 INFO L225 Difference]: With dead ends: 336 [2023-12-02 19:16:46,804 INFO L226 Difference]: Without dead ends: 336 [2023-12-02 19:16:46,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-02 19:16:46,805 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 727 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:46,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 226 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:16:46,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-12-02 19:16:46,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2023-12-02 19:16:46,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 257 states have (on average 1.3035019455252919) internal successors, (335), 335 states have internal predecessors, (335), 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) [2023-12-02 19:16:46,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 335 transitions. [2023-12-02 19:16:46,813 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 335 transitions. Word has length 57 [2023-12-02 19:16:46,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:46,813 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 335 transitions. [2023-12-02 19:16:46,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 7 states have internal predecessors, (57), 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) [2023-12-02 19:16:46,813 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 335 transitions. [2023-12-02 19:16:46,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 19:16:46,814 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:46,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:46,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 19:16:46,815 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:46,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:46,815 INFO L85 PathProgramCache]: Analyzing trace with hash -532886137, now seen corresponding path program 1 times [2023-12-02 19:16:46,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:46,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033463960] [2023-12-02 19:16:46,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:46,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:47,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:47,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:47,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033463960] [2023-12-02 19:16:47,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033463960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:47,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:47,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:16:47,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620423735] [2023-12-02 19:16:47,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:47,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:16:47,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:47,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:16:47,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:16:47,040 INFO L87 Difference]: Start difference. First operand 336 states and 335 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 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) [2023-12-02 19:16:47,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:47,352 INFO L93 Difference]: Finished difference Result 335 states and 334 transitions. [2023-12-02 19:16:47,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:16:47,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 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 62 [2023-12-02 19:16:47,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:47,354 INFO L225 Difference]: With dead ends: 335 [2023-12-02 19:16:47,354 INFO L226 Difference]: Without dead ends: 335 [2023-12-02 19:16:47,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:16:47,355 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 838 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:47,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 184 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:16:47,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-12-02 19:16:47,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2023-12-02 19:16:47,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 257 states have (on average 1.2996108949416343) internal successors, (334), 334 states have internal predecessors, (334), 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) [2023-12-02 19:16:47,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 334 transitions. [2023-12-02 19:16:47,363 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 334 transitions. Word has length 62 [2023-12-02 19:16:47,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:47,363 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 334 transitions. [2023-12-02 19:16:47,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 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) [2023-12-02 19:16:47,363 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 334 transitions. [2023-12-02 19:16:47,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 19:16:47,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:47,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:47,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 19:16:47,364 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:47,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:47,365 INFO L85 PathProgramCache]: Analyzing trace with hash -532886136, now seen corresponding path program 1 times [2023-12-02 19:16:47,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:47,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59263952] [2023-12-02 19:16:47,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:47,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:47,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:47,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59263952] [2023-12-02 19:16:47,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59263952] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:47,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:47,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:16:47,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759198199] [2023-12-02 19:16:47,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:47,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:16:47,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:47,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:16:47,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:16:47,944 INFO L87 Difference]: Start difference. First operand 335 states and 334 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 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) [2023-12-02 19:16:48,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:48,546 INFO L93 Difference]: Finished difference Result 334 states and 333 transitions. [2023-12-02 19:16:48,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:16:48,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 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 62 [2023-12-02 19:16:48,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:48,549 INFO L225 Difference]: With dead ends: 334 [2023-12-02 19:16:48,549 INFO L226 Difference]: Without dead ends: 334 [2023-12-02 19:16:48,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:16:48,550 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 990 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:48,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 227 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:16:48,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-12-02 19:16:48,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2023-12-02 19:16:48,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 257 states have (on average 1.2957198443579767) internal successors, (333), 333 states have internal predecessors, (333), 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) [2023-12-02 19:16:48,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 333 transitions. [2023-12-02 19:16:48,558 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 333 transitions. Word has length 62 [2023-12-02 19:16:48,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:48,558 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 333 transitions. [2023-12-02 19:16:48,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 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) [2023-12-02 19:16:48,558 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 333 transitions. [2023-12-02 19:16:48,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-02 19:16:48,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:48,559 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:48,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 19:16:48,560 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:48,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:48,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1459724178, now seen corresponding path program 1 times [2023-12-02 19:16:48,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:48,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823093956] [2023-12-02 19:16:48,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:48,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:48,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:48,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:48,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823093956] [2023-12-02 19:16:48,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823093956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:48,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:48,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:16:48,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113317226] [2023-12-02 19:16:48,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:48,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:16:48,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:48,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:16:48,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:16:48,802 INFO L87 Difference]: Start difference. First operand 334 states and 333 transitions. Second operand has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 4 states have internal predecessors, (67), 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) [2023-12-02 19:16:49,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:49,059 INFO L93 Difference]: Finished difference Result 333 states and 332 transitions. [2023-12-02 19:16:49,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:16:49,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-12-02 19:16:49,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:49,062 INFO L225 Difference]: With dead ends: 333 [2023-12-02 19:16:49,062 INFO L226 Difference]: Without dead ends: 333 [2023-12-02 19:16:49,062 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 [2023-12-02 19:16:49,063 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 533 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:49,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 183 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:16:49,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-12-02 19:16:49,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2023-12-02 19:16:49,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 257 states have (on average 1.2918287937743191) internal successors, (332), 332 states have internal predecessors, (332), 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) [2023-12-02 19:16:49,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 332 transitions. [2023-12-02 19:16:49,071 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 332 transitions. Word has length 67 [2023-12-02 19:16:49,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:49,071 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 332 transitions. [2023-12-02 19:16:49,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 4 states have internal predecessors, (67), 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) [2023-12-02 19:16:49,071 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 332 transitions. [2023-12-02 19:16:49,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-02 19:16:49,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:49,072 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:49,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 19:16:49,072 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:49,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:49,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1459724177, now seen corresponding path program 1 times [2023-12-02 19:16:49,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:49,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234680289] [2023-12-02 19:16:49,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:49,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:49,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:49,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:49,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234680289] [2023-12-02 19:16:49,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234680289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:49,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:49,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:16:49,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815566175] [2023-12-02 19:16:49,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:49,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:16:49,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:49,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:16:49,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:16:49,648 INFO L87 Difference]: Start difference. First operand 333 states and 332 transitions. Second operand has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 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) [2023-12-02 19:16:50,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:50,253 INFO L93 Difference]: Finished difference Result 332 states and 331 transitions. [2023-12-02 19:16:50,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:16:50,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-12-02 19:16:50,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:50,255 INFO L225 Difference]: With dead ends: 332 [2023-12-02 19:16:50,256 INFO L226 Difference]: Without dead ends: 332 [2023-12-02 19:16:50,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:16:50,257 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 972 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:50,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 229 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:16:50,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-02 19:16:50,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2023-12-02 19:16:50,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 257 states have (on average 1.2879377431906616) internal successors, (331), 331 states have internal predecessors, (331), 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) [2023-12-02 19:16:50,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 331 transitions. [2023-12-02 19:16:50,264 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 331 transitions. Word has length 67 [2023-12-02 19:16:50,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:50,265 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 331 transitions. [2023-12-02 19:16:50,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 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) [2023-12-02 19:16:50,265 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 331 transitions. [2023-12-02 19:16:50,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 19:16:50,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:50,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:50,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-02 19:16:50,266 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:50,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:50,266 INFO L85 PathProgramCache]: Analyzing trace with hash -544271944, now seen corresponding path program 1 times [2023-12-02 19:16:50,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:50,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741076033] [2023-12-02 19:16:50,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:50,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:50,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:50,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:50,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741076033] [2023-12-02 19:16:50,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741076033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:50,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:50,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:16:50,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316327803] [2023-12-02 19:16:50,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:50,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:16:50,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:50,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:16:50,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:16:50,483 INFO L87 Difference]: Start difference. First operand 332 states and 331 transitions. Second operand has 4 states, 3 states have (on average 24.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-12-02 19:16:50,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:50,739 INFO L93 Difference]: Finished difference Result 331 states and 330 transitions. [2023-12-02 19:16:50,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:16:50,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.0) internal successors, (72), 4 states have internal predecessors, (72), 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 72 [2023-12-02 19:16:50,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:50,741 INFO L225 Difference]: With dead ends: 331 [2023-12-02 19:16:50,741 INFO L226 Difference]: Without dead ends: 331 [2023-12-02 19:16:50,741 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 [2023-12-02 19:16:50,742 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 519 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:50,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 185 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:16:50,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-02 19:16:50,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2023-12-02 19:16:50,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 257 states have (on average 1.284046692607004) internal successors, (330), 330 states have internal predecessors, (330), 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) [2023-12-02 19:16:50,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 330 transitions. [2023-12-02 19:16:50,750 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 330 transitions. Word has length 72 [2023-12-02 19:16:50,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:50,750 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 330 transitions. [2023-12-02 19:16:50,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2023-12-02 19:16:50,750 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 330 transitions. [2023-12-02 19:16:50,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 19:16:50,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:50,751 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:50,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 19:16:50,751 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:50,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:50,752 INFO L85 PathProgramCache]: Analyzing trace with hash -544271943, now seen corresponding path program 1 times [2023-12-02 19:16:50,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:50,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509040535] [2023-12-02 19:16:50,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:50,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:51,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:51,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:51,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509040535] [2023-12-02 19:16:51,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509040535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:51,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:51,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:16:51,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593625711] [2023-12-02 19:16:51,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:51,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:16:51,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:51,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:16:51,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:16:51,267 INFO L87 Difference]: Start difference. First operand 331 states and 330 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 7 states have internal predecessors, (72), 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) [2023-12-02 19:16:51,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:51,812 INFO L93 Difference]: Finished difference Result 330 states and 329 transitions. [2023-12-02 19:16:51,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:16:51,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 7 states have internal predecessors, (72), 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 72 [2023-12-02 19:16:51,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:51,814 INFO L225 Difference]: With dead ends: 330 [2023-12-02 19:16:51,815 INFO L226 Difference]: Without dead ends: 330 [2023-12-02 19:16:51,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-02 19:16:51,815 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 694 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:51,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 232 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:16:51,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-12-02 19:16:51,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2023-12-02 19:16:51,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 257 states have (on average 1.2801556420233462) internal successors, (329), 329 states have internal predecessors, (329), 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) [2023-12-02 19:16:51,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 329 transitions. [2023-12-02 19:16:51,824 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 329 transitions. Word has length 72 [2023-12-02 19:16:51,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:51,825 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 329 transitions. [2023-12-02 19:16:51,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 7 states have internal predecessors, (72), 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) [2023-12-02 19:16:51,825 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 329 transitions. [2023-12-02 19:16:51,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 19:16:51,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:51,826 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:51,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-02 19:16:51,826 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr94REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:51,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:51,827 INFO L85 PathProgramCache]: Analyzing trace with hash -872207745, now seen corresponding path program 1 times [2023-12-02 19:16:51,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:51,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551748644] [2023-12-02 19:16:51,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:51,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:52,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:52,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:52,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551748644] [2023-12-02 19:16:52,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551748644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:52,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:52,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:16:52,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343233155] [2023-12-02 19:16:52,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:52,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:16:52,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:52,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:16:52,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:16:52,055 INFO L87 Difference]: Start difference. First operand 330 states and 329 transitions. Second operand has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:52,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:52,310 INFO L93 Difference]: Finished difference Result 329 states and 328 transitions. [2023-12-02 19:16:52,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:16:52,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-02 19:16:52,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:52,313 INFO L225 Difference]: With dead ends: 329 [2023-12-02 19:16:52,313 INFO L226 Difference]: Without dead ends: 329 [2023-12-02 19:16:52,313 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 [2023-12-02 19:16:52,313 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 505 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:52,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 187 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:16:52,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-12-02 19:16:52,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2023-12-02 19:16:52,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 257 states have (on average 1.2762645914396886) internal successors, (328), 328 states have internal predecessors, (328), 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) [2023-12-02 19:16:52,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 328 transitions. [2023-12-02 19:16:52,321 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 328 transitions. Word has length 77 [2023-12-02 19:16:52,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:52,321 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 328 transitions. [2023-12-02 19:16:52,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:52,321 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 328 transitions. [2023-12-02 19:16:52,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 19:16:52,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:52,322 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:52,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-02 19:16:52,322 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:52,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:52,323 INFO L85 PathProgramCache]: Analyzing trace with hash -872207744, now seen corresponding path program 1 times [2023-12-02 19:16:52,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:52,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033658196] [2023-12-02 19:16:52,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:52,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:52,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:52,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:52,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033658196] [2023-12-02 19:16:52,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033658196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:52,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:52,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:16:52,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655923399] [2023-12-02 19:16:52,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:52,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:16:52,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:52,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:16:52,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:16:52,892 INFO L87 Difference]: Start difference. First operand 329 states and 328 transitions. Second operand has 6 states, 5 states have (on average 15.4) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:53,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:53,477 INFO L93 Difference]: Finished difference Result 328 states and 327 transitions. [2023-12-02 19:16:53,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:16:53,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.4) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-02 19:16:53,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:53,480 INFO L225 Difference]: With dead ends: 328 [2023-12-02 19:16:53,480 INFO L226 Difference]: Without dead ends: 328 [2023-12-02 19:16:53,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:16:53,481 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 683 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:53,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 234 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:16:53,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-12-02 19:16:53,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2023-12-02 19:16:53,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 257 states have (on average 1.272373540856031) internal successors, (327), 327 states have internal predecessors, (327), 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) [2023-12-02 19:16:53,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 327 transitions. [2023-12-02 19:16:53,488 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 327 transitions. Word has length 77 [2023-12-02 19:16:53,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:53,489 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 327 transitions. [2023-12-02 19:16:53,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.4) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:53,489 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 327 transitions. [2023-12-02 19:16:53,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 19:16:53,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:53,490 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:53,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-02 19:16:53,490 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr97REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:53,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:53,491 INFO L85 PathProgramCache]: Analyzing trace with hash -789970454, now seen corresponding path program 1 times [2023-12-02 19:16:53,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:53,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735628213] [2023-12-02 19:16:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:53,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:53,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:53,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:53,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735628213] [2023-12-02 19:16:53,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735628213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:53,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:53,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:16:53,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549747982] [2023-12-02 19:16:53,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:53,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:16:53,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:53,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:16:53,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:16:53,927 INFO L87 Difference]: Start difference. First operand 328 states and 327 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:54,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:54,474 INFO L93 Difference]: Finished difference Result 327 states and 326 transitions. [2023-12-02 19:16:54,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:16:54,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2023-12-02 19:16:54,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:54,476 INFO L225 Difference]: With dead ends: 327 [2023-12-02 19:16:54,476 INFO L226 Difference]: Without dead ends: 327 [2023-12-02 19:16:54,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:16:54,477 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 922 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:54,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 235 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:16:54,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-12-02 19:16:54,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2023-12-02 19:16:54,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 257 states have (on average 1.2684824902723735) internal successors, (326), 326 states have internal predecessors, (326), 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) [2023-12-02 19:16:54,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 326 transitions. [2023-12-02 19:16:54,484 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 326 transitions. Word has length 82 [2023-12-02 19:16:54,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:54,484 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 326 transitions. [2023-12-02 19:16:54,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:54,484 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 326 transitions. [2023-12-02 19:16:54,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 19:16:54,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:54,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:54,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-02 19:16:54,485 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:54,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:54,486 INFO L85 PathProgramCache]: Analyzing trace with hash -789970455, now seen corresponding path program 1 times [2023-12-02 19:16:54,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:54,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926245587] [2023-12-02 19:16:54,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:54,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:54,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:54,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:54,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926245587] [2023-12-02 19:16:54,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926245587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:54,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:54,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:16:54,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661695656] [2023-12-02 19:16:54,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:54,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:16:54,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:54,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:16:54,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:16:54,634 INFO L87 Difference]: Start difference. First operand 327 states and 326 transitions. Second operand has 4 states, 3 states have (on average 27.333333333333332) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:54,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:54,877 INFO L93 Difference]: Finished difference Result 326 states and 325 transitions. [2023-12-02 19:16:54,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:16:54,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 27.333333333333332) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2023-12-02 19:16:54,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:54,879 INFO L225 Difference]: With dead ends: 326 [2023-12-02 19:16:54,879 INFO L226 Difference]: Without dead ends: 326 [2023-12-02 19:16:54,879 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 [2023-12-02 19:16:54,880 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 489 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:54,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 189 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:16:54,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-12-02 19:16:54,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2023-12-02 19:16:54,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 257 states have (on average 1.264591439688716) internal successors, (325), 325 states have internal predecessors, (325), 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) [2023-12-02 19:16:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 325 transitions. [2023-12-02 19:16:54,885 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 325 transitions. Word has length 82 [2023-12-02 19:16:54,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:54,885 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 325 transitions. [2023-12-02 19:16:54,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 27.333333333333332) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:54,885 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 325 transitions. [2023-12-02 19:16:54,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 19:16:54,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:54,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:54,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-02 19:16:54,886 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr98REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:54,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:54,887 INFO L85 PathProgramCache]: Analyzing trace with hash -2088056688, now seen corresponding path program 1 times [2023-12-02 19:16:54,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:54,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082087516] [2023-12-02 19:16:54,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:54,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:55,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:55,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082087516] [2023-12-02 19:16:55,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082087516] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:55,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:55,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:16:55,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214336511] [2023-12-02 19:16:55,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:55,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:16:55,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:55,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:16:55,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:16:55,046 INFO L87 Difference]: Start difference. First operand 326 states and 325 transitions. Second operand has 4 states, 3 states have (on average 29.0) internal successors, (87), 4 states have internal predecessors, (87), 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) [2023-12-02 19:16:55,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:55,290 INFO L93 Difference]: Finished difference Result 325 states and 324 transitions. [2023-12-02 19:16:55,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:16:55,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 29.0) internal successors, (87), 4 states have internal predecessors, (87), 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 87 [2023-12-02 19:16:55,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:55,292 INFO L225 Difference]: With dead ends: 325 [2023-12-02 19:16:55,292 INFO L226 Difference]: Without dead ends: 325 [2023-12-02 19:16:55,292 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 [2023-12-02 19:16:55,293 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 477 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:55,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 191 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:16:55,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-12-02 19:16:55,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2023-12-02 19:16:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 257 states have (on average 1.2607003891050583) internal successors, (324), 324 states have internal predecessors, (324), 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) [2023-12-02 19:16:55,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 324 transitions. [2023-12-02 19:16:55,298 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 324 transitions. Word has length 87 [2023-12-02 19:16:55,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:55,299 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 324 transitions. [2023-12-02 19:16:55,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 29.0) internal successors, (87), 4 states have internal predecessors, (87), 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) [2023-12-02 19:16:55,299 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 324 transitions. [2023-12-02 19:16:55,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 19:16:55,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:55,300 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:55,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-02 19:16:55,300 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr99REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:55,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:55,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2088056687, now seen corresponding path program 1 times [2023-12-02 19:16:55,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:55,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105497299] [2023-12-02 19:16:55,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:55,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:55,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:55,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:55,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105497299] [2023-12-02 19:16:55,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105497299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:55,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:55,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:16:55,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617193867] [2023-12-02 19:16:55,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:55,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:16:55,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:55,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:16:55,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:16:55,745 INFO L87 Difference]: Start difference. First operand 325 states and 324 transitions. Second operand has 6 states, 5 states have (on average 17.4) internal successors, (87), 6 states have internal predecessors, (87), 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) [2023-12-02 19:16:56,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:56,241 INFO L93 Difference]: Finished difference Result 324 states and 323 transitions. [2023-12-02 19:16:56,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:16:56,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 6 states have internal predecessors, (87), 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 87 [2023-12-02 19:16:56,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:56,243 INFO L225 Difference]: With dead ends: 324 [2023-12-02 19:16:56,243 INFO L226 Difference]: Without dead ends: 324 [2023-12-02 19:16:56,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:16:56,244 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 900 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:56,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 237 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:16:56,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-12-02 19:16:56,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2023-12-02 19:16:56,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 257 states have (on average 1.2568093385214008) internal successors, (323), 323 states have internal predecessors, (323), 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) [2023-12-02 19:16:56,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 323 transitions. [2023-12-02 19:16:56,249 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 323 transitions. Word has length 87 [2023-12-02 19:16:56,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:56,250 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 323 transitions. [2023-12-02 19:16:56,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 6 states have internal predecessors, (87), 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) [2023-12-02 19:16:56,250 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 323 transitions. [2023-12-02 19:16:56,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 19:16:56,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:56,251 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:56,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-02 19:16:56,251 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr100REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:56,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:56,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1919327770, now seen corresponding path program 1 times [2023-12-02 19:16:56,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:56,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613374498] [2023-12-02 19:16:56,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:56,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:56,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:56,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:56,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613374498] [2023-12-02 19:16:56,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613374498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:56,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:56,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:16:56,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527180246] [2023-12-02 19:16:56,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:56,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:16:56,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:56,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:16:56,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:16:56,468 INFO L87 Difference]: Start difference. First operand 324 states and 323 transitions. Second operand has 4 states, 3 states have (on average 30.666666666666668) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:56,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:56,675 INFO L93 Difference]: Finished difference Result 323 states and 322 transitions. [2023-12-02 19:16:56,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:16:56,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 30.666666666666668) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-02 19:16:56,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:56,677 INFO L225 Difference]: With dead ends: 323 [2023-12-02 19:16:56,677 INFO L226 Difference]: Without dead ends: 323 [2023-12-02 19:16:56,677 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 [2023-12-02 19:16:56,678 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 463 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:56,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 193 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:16:56,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-12-02 19:16:56,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2023-12-02 19:16:56,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 257 states have (on average 1.2529182879377432) internal successors, (322), 322 states have internal predecessors, (322), 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) [2023-12-02 19:16:56,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 322 transitions. [2023-12-02 19:16:56,683 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 322 transitions. Word has length 92 [2023-12-02 19:16:56,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:56,683 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 322 transitions. [2023-12-02 19:16:56,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 30.666666666666668) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:56,683 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 322 transitions. [2023-12-02 19:16:56,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-02 19:16:56,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:56,683 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:56,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-02 19:16:56,684 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr101REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:56,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:56,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1919327771, now seen corresponding path program 1 times [2023-12-02 19:16:56,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:56,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202015782] [2023-12-02 19:16:56,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:56,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:57,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:57,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:57,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202015782] [2023-12-02 19:16:57,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202015782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:57,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:57,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:16:57,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440173845] [2023-12-02 19:16:57,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:57,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:16:57,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:57,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:16:57,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:16:57,085 INFO L87 Difference]: Start difference. First operand 323 states and 322 transitions. Second operand has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:57,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:57,589 INFO L93 Difference]: Finished difference Result 322 states and 321 transitions. [2023-12-02 19:16:57,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:16:57,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-02 19:16:57,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:57,591 INFO L225 Difference]: With dead ends: 322 [2023-12-02 19:16:57,591 INFO L226 Difference]: Without dead ends: 322 [2023-12-02 19:16:57,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-02 19:16:57,591 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 920 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:57,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 240 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:16:57,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-12-02 19:16:57,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2023-12-02 19:16:57,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 257 states have (on average 1.2490272373540856) internal successors, (321), 321 states have internal predecessors, (321), 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) [2023-12-02 19:16:57,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 321 transitions. [2023-12-02 19:16:57,597 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 321 transitions. Word has length 92 [2023-12-02 19:16:57,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:57,597 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 321 transitions. [2023-12-02 19:16:57,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:57,598 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 321 transitions. [2023-12-02 19:16:57,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-02 19:16:57,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:57,598 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:57,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-02 19:16:57,598 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr102REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:57,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:57,599 INFO L85 PathProgramCache]: Analyzing trace with hash -115590495, now seen corresponding path program 1 times [2023-12-02 19:16:57,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:57,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738579541] [2023-12-02 19:16:57,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:57,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:57,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:57,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:57,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738579541] [2023-12-02 19:16:57,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738579541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:57,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:57,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:16:57,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44989270] [2023-12-02 19:16:57,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:57,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:16:57,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:57,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:16:57,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:16:57,799 INFO L87 Difference]: Start difference. First operand 322 states and 321 transitions. Second operand has 4 states, 3 states have (on average 32.333333333333336) internal successors, (97), 4 states have internal predecessors, (97), 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) [2023-12-02 19:16:58,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:58,040 INFO L93 Difference]: Finished difference Result 321 states and 320 transitions. [2023-12-02 19:16:58,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:16:58,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 32.333333333333336) internal successors, (97), 4 states have internal predecessors, (97), 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 97 [2023-12-02 19:16:58,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:58,041 INFO L225 Difference]: With dead ends: 321 [2023-12-02 19:16:58,041 INFO L226 Difference]: Without dead ends: 321 [2023-12-02 19:16:58,042 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 [2023-12-02 19:16:58,042 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 449 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:58,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 195 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:16:58,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-12-02 19:16:58,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2023-12-02 19:16:58,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 257 states have (on average 1.245136186770428) internal successors, (320), 320 states have internal predecessors, (320), 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) [2023-12-02 19:16:58,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 320 transitions. [2023-12-02 19:16:58,046 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 320 transitions. Word has length 97 [2023-12-02 19:16:58,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:58,047 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 320 transitions. [2023-12-02 19:16:58,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 32.333333333333336) internal successors, (97), 4 states have internal predecessors, (97), 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) [2023-12-02 19:16:58,047 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 320 transitions. [2023-12-02 19:16:58,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-02 19:16:58,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:58,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:58,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-02 19:16:58,047 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr103REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:58,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:58,048 INFO L85 PathProgramCache]: Analyzing trace with hash -115590494, now seen corresponding path program 1 times [2023-12-02 19:16:58,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:58,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378901423] [2023-12-02 19:16:58,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:58,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:58,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:58,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:58,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378901423] [2023-12-02 19:16:58,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378901423] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:58,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:58,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:16:58,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079275618] [2023-12-02 19:16:58,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:58,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:16:58,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:58,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:16:58,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:16:58,535 INFO L87 Difference]: Start difference. First operand 321 states and 320 transitions. Second operand has 6 states, 5 states have (on average 19.4) internal successors, (97), 6 states have internal predecessors, (97), 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) [2023-12-02 19:16:59,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:59,100 INFO L93 Difference]: Finished difference Result 320 states and 319 transitions. [2023-12-02 19:16:59,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:16:59,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 6 states have internal predecessors, (97), 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 97 [2023-12-02 19:16:59,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:59,102 INFO L225 Difference]: With dead ends: 320 [2023-12-02 19:16:59,102 INFO L226 Difference]: Without dead ends: 320 [2023-12-02 19:16:59,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:16:59,103 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 864 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:59,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 241 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:16:59,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-12-02 19:16:59,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2023-12-02 19:16:59,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 257 states have (on average 1.2412451361867705) internal successors, (319), 319 states have internal predecessors, (319), 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) [2023-12-02 19:16:59,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 319 transitions. [2023-12-02 19:16:59,108 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 319 transitions. Word has length 97 [2023-12-02 19:16:59,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:59,108 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 319 transitions. [2023-12-02 19:16:59,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 6 states have internal predecessors, (97), 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) [2023-12-02 19:16:59,108 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 319 transitions. [2023-12-02 19:16:59,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-02 19:16:59,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:59,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:59,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-02 19:16:59,109 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:59,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:59,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1994253899, now seen corresponding path program 1 times [2023-12-02 19:16:59,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:59,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623880052] [2023-12-02 19:16:59,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:59,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:59,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:59,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:59,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623880052] [2023-12-02 19:16:59,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623880052] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:59,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:59,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:16:59,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356593722] [2023-12-02 19:16:59,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:59,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:16:59,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:59,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:16:59,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:16:59,294 INFO L87 Difference]: Start difference. First operand 320 states and 319 transitions. Second operand has 4 states, 3 states have (on average 34.0) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:59,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:16:59,500 INFO L93 Difference]: Finished difference Result 319 states and 318 transitions. [2023-12-02 19:16:59,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:16:59,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.0) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-02 19:16:59,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:16:59,502 INFO L225 Difference]: With dead ends: 319 [2023-12-02 19:16:59,502 INFO L226 Difference]: Without dead ends: 319 [2023-12-02 19:16:59,502 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 [2023-12-02 19:16:59,503 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 435 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:16:59,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 197 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:16:59,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-12-02 19:16:59,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2023-12-02 19:16:59,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 257 states have (on average 1.2373540856031129) internal successors, (318), 318 states have internal predecessors, (318), 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) [2023-12-02 19:16:59,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 318 transitions. [2023-12-02 19:16:59,508 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 318 transitions. Word has length 102 [2023-12-02 19:16:59,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:16:59,509 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 318 transitions. [2023-12-02 19:16:59,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.0) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:16:59,509 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 318 transitions. [2023-12-02 19:16:59,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-02 19:16:59,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:16:59,510 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:16:59,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-02 19:16:59,510 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr105REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:16:59,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:16:59,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1994253900, now seen corresponding path program 1 times [2023-12-02 19:16:59,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:16:59,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501425390] [2023-12-02 19:16:59,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:16:59,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:16:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:16:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:16:59,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:16:59,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501425390] [2023-12-02 19:16:59,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501425390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:16:59,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:16:59,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:16:59,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160593328] [2023-12-02 19:16:59,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:16:59,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:16:59,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:16:59,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:16:59,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:16:59,986 INFO L87 Difference]: Start difference. First operand 319 states and 318 transitions. Second operand has 6 states, 5 states have (on average 20.4) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:00,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:00,489 INFO L93 Difference]: Finished difference Result 318 states and 317 transitions. [2023-12-02 19:17:00,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:00,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.4) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-02 19:17:00,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:00,490 INFO L225 Difference]: With dead ends: 318 [2023-12-02 19:17:00,490 INFO L226 Difference]: Without dead ends: 318 [2023-12-02 19:17:00,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:17:00,491 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 628 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:00,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 244 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:00,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-12-02 19:17:00,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2023-12-02 19:17:00,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 257 states have (on average 1.2334630350194553) internal successors, (317), 317 states have internal predecessors, (317), 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) [2023-12-02 19:17:00,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 317 transitions. [2023-12-02 19:17:00,495 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 317 transitions. Word has length 102 [2023-12-02 19:17:00,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:00,495 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 317 transitions. [2023-12-02 19:17:00,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.4) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:00,495 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 317 transitions. [2023-12-02 19:17:00,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-02 19:17:00,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:00,495 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:00,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-02 19:17:00,495 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr106REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:00,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:00,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1501462706, now seen corresponding path program 1 times [2023-12-02 19:17:00,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:00,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071969556] [2023-12-02 19:17:00,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:00,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:00,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:00,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:00,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071969556] [2023-12-02 19:17:00,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071969556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:00,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:00,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:00,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092549345] [2023-12-02 19:17:00,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:00,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:00,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:00,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:00,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:00,677 INFO L87 Difference]: Start difference. First operand 318 states and 317 transitions. Second operand has 4 states, 3 states have (on average 35.666666666666664) internal successors, (107), 4 states have internal predecessors, (107), 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) [2023-12-02 19:17:00,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:00,884 INFO L93 Difference]: Finished difference Result 317 states and 316 transitions. [2023-12-02 19:17:00,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:00,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 35.666666666666664) internal successors, (107), 4 states have internal predecessors, (107), 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 107 [2023-12-02 19:17:00,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:00,887 INFO L225 Difference]: With dead ends: 317 [2023-12-02 19:17:00,887 INFO L226 Difference]: Without dead ends: 317 [2023-12-02 19:17:00,887 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 [2023-12-02 19:17:00,887 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 421 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:00,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 199 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:00,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-12-02 19:17:00,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2023-12-02 19:17:00,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 257 states have (on average 1.2295719844357977) internal successors, (316), 316 states have internal predecessors, (316), 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) [2023-12-02 19:17:00,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 316 transitions. [2023-12-02 19:17:00,892 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 316 transitions. Word has length 107 [2023-12-02 19:17:00,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:00,892 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 316 transitions. [2023-12-02 19:17:00,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 35.666666666666664) internal successors, (107), 4 states have internal predecessors, (107), 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) [2023-12-02 19:17:00,892 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 316 transitions. [2023-12-02 19:17:00,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-02 19:17:00,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:00,893 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:00,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-02 19:17:00,893 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:00,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:00,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1501462707, now seen corresponding path program 1 times [2023-12-02 19:17:00,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:00,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671618802] [2023-12-02 19:17:00,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:00,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:01,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:01,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671618802] [2023-12-02 19:17:01,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671618802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:01,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:01,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:17:01,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138421333] [2023-12-02 19:17:01,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:01,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:17:01,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:01,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:17:01,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:17:01,299 INFO L87 Difference]: Start difference. First operand 317 states and 316 transitions. Second operand has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 7 states have internal predecessors, (107), 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) [2023-12-02 19:17:01,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:01,778 INFO L93 Difference]: Finished difference Result 316 states and 315 transitions. [2023-12-02 19:17:01,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:01,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 7 states have internal predecessors, (107), 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 107 [2023-12-02 19:17:01,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:01,780 INFO L225 Difference]: With dead ends: 316 [2023-12-02 19:17:01,780 INFO L226 Difference]: Without dead ends: 316 [2023-12-02 19:17:01,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-02 19:17:01,781 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 881 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:01,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 246 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:01,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-12-02 19:17:01,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2023-12-02 19:17:01,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 257 states have (on average 1.2256809338521402) internal successors, (315), 315 states have internal predecessors, (315), 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) [2023-12-02 19:17:01,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 315 transitions. [2023-12-02 19:17:01,785 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 315 transitions. Word has length 107 [2023-12-02 19:17:01,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:01,785 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 315 transitions. [2023-12-02 19:17:01,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 7 states have internal predecessors, (107), 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) [2023-12-02 19:17:01,785 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 315 transitions. [2023-12-02 19:17:01,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-02 19:17:01,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:01,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:01,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-02 19:17:01,786 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:01,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:01,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1779901828, now seen corresponding path program 1 times [2023-12-02 19:17:01,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:01,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235471237] [2023-12-02 19:17:01,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:01,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:01,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:01,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:01,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235471237] [2023-12-02 19:17:01,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235471237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:01,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:01,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:01,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381809908] [2023-12-02 19:17:01,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:01,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:01,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:01,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:01,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:01,947 INFO L87 Difference]: Start difference. First operand 316 states and 315 transitions. Second operand has 4 states, 3 states have (on average 37.333333333333336) internal successors, (112), 4 states have internal predecessors, (112), 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) [2023-12-02 19:17:02,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:02,191 INFO L93 Difference]: Finished difference Result 315 states and 314 transitions. [2023-12-02 19:17:02,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:02,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 37.333333333333336) internal successors, (112), 4 states have internal predecessors, (112), 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 112 [2023-12-02 19:17:02,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:02,193 INFO L225 Difference]: With dead ends: 315 [2023-12-02 19:17:02,193 INFO L226 Difference]: Without dead ends: 315 [2023-12-02 19:17:02,193 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 [2023-12-02 19:17:02,193 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 407 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:02,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 201 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:02,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-12-02 19:17:02,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2023-12-02 19:17:02,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 257 states have (on average 1.2217898832684826) internal successors, (314), 314 states have internal predecessors, (314), 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) [2023-12-02 19:17:02,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 314 transitions. [2023-12-02 19:17:02,197 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 314 transitions. Word has length 112 [2023-12-02 19:17:02,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:02,197 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 314 transitions. [2023-12-02 19:17:02,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 37.333333333333336) internal successors, (112), 4 states have internal predecessors, (112), 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) [2023-12-02 19:17:02,198 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 314 transitions. [2023-12-02 19:17:02,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-02 19:17:02,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:02,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:02,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-02 19:17:02,198 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:02,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:02,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1779901827, now seen corresponding path program 1 times [2023-12-02 19:17:02,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:02,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692126417] [2023-12-02 19:17:02,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:02,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:02,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:02,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:02,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692126417] [2023-12-02 19:17:02,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692126417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:02,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:02,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:17:02,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472823116] [2023-12-02 19:17:02,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:02,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:17:02,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:02,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:17:02,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:17:02,675 INFO L87 Difference]: Start difference. First operand 315 states and 314 transitions. Second operand has 6 states, 5 states have (on average 22.4) internal successors, (112), 6 states have internal predecessors, (112), 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) [2023-12-02 19:17:03,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:03,141 INFO L93 Difference]: Finished difference Result 314 states and 313 transitions. [2023-12-02 19:17:03,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:03,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.4) internal successors, (112), 6 states have internal predecessors, (112), 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 112 [2023-12-02 19:17:03,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:03,143 INFO L225 Difference]: With dead ends: 314 [2023-12-02 19:17:03,143 INFO L226 Difference]: Without dead ends: 314 [2023-12-02 19:17:03,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:17:03,143 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 810 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:03,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 247 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:03,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-12-02 19:17:03,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2023-12-02 19:17:03,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 257 states have (on average 1.2178988326848248) internal successors, (313), 313 states have internal predecessors, (313), 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) [2023-12-02 19:17:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 313 transitions. [2023-12-02 19:17:03,147 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 313 transitions. Word has length 112 [2023-12-02 19:17:03,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:03,147 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 313 transitions. [2023-12-02 19:17:03,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.4) internal successors, (112), 6 states have internal predecessors, (112), 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) [2023-12-02 19:17:03,147 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 313 transitions. [2023-12-02 19:17:03,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-02 19:17:03,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:03,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:03,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-02 19:17:03,148 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr110REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:03,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:03,148 INFO L85 PathProgramCache]: Analyzing trace with hash -994534717, now seen corresponding path program 1 times [2023-12-02 19:17:03,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:03,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252321481] [2023-12-02 19:17:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:03,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:03,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:03,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:03,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252321481] [2023-12-02 19:17:03,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252321481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:03,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:03,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:03,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145345529] [2023-12-02 19:17:03,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:03,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:03,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:03,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:03,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:03,320 INFO L87 Difference]: Start difference. First operand 314 states and 313 transitions. Second operand has 4 states, 3 states have (on average 39.0) internal successors, (117), 4 states have internal predecessors, (117), 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) [2023-12-02 19:17:03,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:03,511 INFO L93 Difference]: Finished difference Result 313 states and 312 transitions. [2023-12-02 19:17:03,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:03,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 39.0) internal successors, (117), 4 states have internal predecessors, (117), 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 117 [2023-12-02 19:17:03,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:03,513 INFO L225 Difference]: With dead ends: 313 [2023-12-02 19:17:03,513 INFO L226 Difference]: Without dead ends: 313 [2023-12-02 19:17:03,513 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 [2023-12-02 19:17:03,513 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 393 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:03,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 203 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:03,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-12-02 19:17:03,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2023-12-02 19:17:03,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 257 states have (on average 1.2140077821011672) internal successors, (312), 312 states have internal predecessors, (312), 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) [2023-12-02 19:17:03,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 312 transitions. [2023-12-02 19:17:03,517 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 312 transitions. Word has length 117 [2023-12-02 19:17:03,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:03,518 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 312 transitions. [2023-12-02 19:17:03,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 39.0) internal successors, (117), 4 states have internal predecessors, (117), 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) [2023-12-02 19:17:03,518 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 312 transitions. [2023-12-02 19:17:03,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-02 19:17:03,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:03,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:03,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-02 19:17:03,519 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr111REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:03,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:03,519 INFO L85 PathProgramCache]: Analyzing trace with hash -994534716, now seen corresponding path program 1 times [2023-12-02 19:17:03,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:03,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669418481] [2023-12-02 19:17:03,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:03,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:03,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:03,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669418481] [2023-12-02 19:17:03,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669418481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:03,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:03,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:17:03,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921455530] [2023-12-02 19:17:03,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:03,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:17:03,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:03,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:17:03,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:17:03,932 INFO L87 Difference]: Start difference. First operand 313 states and 312 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 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) [2023-12-02 19:17:04,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:04,405 INFO L93 Difference]: Finished difference Result 312 states and 311 transitions. [2023-12-02 19:17:04,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:04,406 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 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 117 [2023-12-02 19:17:04,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:04,407 INFO L225 Difference]: With dead ends: 312 [2023-12-02 19:17:04,407 INFO L226 Difference]: Without dead ends: 312 [2023-12-02 19:17:04,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:17:04,408 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 595 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:04,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 250 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:04,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-12-02 19:17:04,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2023-12-02 19:17:04,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 257 states have (on average 1.2101167315175096) internal successors, (311), 311 states have internal predecessors, (311), 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) [2023-12-02 19:17:04,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 311 transitions. [2023-12-02 19:17:04,412 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 311 transitions. Word has length 117 [2023-12-02 19:17:04,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:04,413 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 311 transitions. [2023-12-02 19:17:04,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 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) [2023-12-02 19:17:04,413 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 311 transitions. [2023-12-02 19:17:04,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-02 19:17:04,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:04,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:04,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-02 19:17:04,413 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr112REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:04,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:04,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1679787347, now seen corresponding path program 1 times [2023-12-02 19:17:04,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:04,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976590448] [2023-12-02 19:17:04,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:04,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:04,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:04,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976590448] [2023-12-02 19:17:04,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976590448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:04,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:04,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:04,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382779172] [2023-12-02 19:17:04,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:04,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:04,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:04,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:04,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:04,614 INFO L87 Difference]: Start difference. First operand 312 states and 311 transitions. Second operand has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 4 states have internal predecessors, (122), 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) [2023-12-02 19:17:04,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:04,830 INFO L93 Difference]: Finished difference Result 311 states and 310 transitions. [2023-12-02 19:17:04,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:04,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 4 states have internal predecessors, (122), 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 122 [2023-12-02 19:17:04,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:04,833 INFO L225 Difference]: With dead ends: 311 [2023-12-02 19:17:04,833 INFO L226 Difference]: Without dead ends: 311 [2023-12-02 19:17:04,833 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 [2023-12-02 19:17:04,833 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 379 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:04,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 205 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:04,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-12-02 19:17:04,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2023-12-02 19:17:04,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 257 states have (on average 1.206225680933852) internal successors, (310), 310 states have internal predecessors, (310), 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) [2023-12-02 19:17:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 310 transitions. [2023-12-02 19:17:04,837 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 310 transitions. Word has length 122 [2023-12-02 19:17:04,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:04,838 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 310 transitions. [2023-12-02 19:17:04,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 4 states have internal predecessors, (122), 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) [2023-12-02 19:17:04,838 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 310 transitions. [2023-12-02 19:17:04,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-02 19:17:04,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:04,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:04,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-02 19:17:04,838 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr113REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:04,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:04,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1679787346, now seen corresponding path program 1 times [2023-12-02 19:17:04,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:04,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485842147] [2023-12-02 19:17:04,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:04,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:05,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:05,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:05,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485842147] [2023-12-02 19:17:05,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485842147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:05,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:05,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:17:05,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689426240] [2023-12-02 19:17:05,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:05,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:17:05,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:05,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:17:05,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:17:05,396 INFO L87 Difference]: Start difference. First operand 311 states and 310 transitions. Second operand has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 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) [2023-12-02 19:17:05,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:05,869 INFO L93 Difference]: Finished difference Result 310 states and 309 transitions. [2023-12-02 19:17:05,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:05,869 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 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 122 [2023-12-02 19:17:05,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:05,871 INFO L225 Difference]: With dead ends: 310 [2023-12-02 19:17:05,871 INFO L226 Difference]: Without dead ends: 310 [2023-12-02 19:17:05,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:17:05,872 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 774 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:05,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 251 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:05,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-12-02 19:17:05,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2023-12-02 19:17:05,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 257 states have (on average 1.2023346303501945) internal successors, (309), 309 states have internal predecessors, (309), 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) [2023-12-02 19:17:05,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 309 transitions. [2023-12-02 19:17:05,876 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 309 transitions. Word has length 122 [2023-12-02 19:17:05,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:05,877 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 309 transitions. [2023-12-02 19:17:05,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 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) [2023-12-02 19:17:05,877 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 309 transitions. [2023-12-02 19:17:05,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-02 19:17:05,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:05,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:05,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-02 19:17:05,877 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr114REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:05,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:05,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1041336532, now seen corresponding path program 1 times [2023-12-02 19:17:05,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:05,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065681656] [2023-12-02 19:17:05,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:05,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:06,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:06,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:06,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065681656] [2023-12-02 19:17:06,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065681656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:06,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:06,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:06,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516531019] [2023-12-02 19:17:06,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:06,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:06,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:06,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:06,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:06,060 INFO L87 Difference]: Start difference. First operand 310 states and 309 transitions. Second operand has 4 states, 3 states have (on average 42.333333333333336) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:06,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:06,276 INFO L93 Difference]: Finished difference Result 309 states and 308 transitions. [2023-12-02 19:17:06,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:06,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 42.333333333333336) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2023-12-02 19:17:06,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:06,278 INFO L225 Difference]: With dead ends: 309 [2023-12-02 19:17:06,278 INFO L226 Difference]: Without dead ends: 309 [2023-12-02 19:17:06,278 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 [2023-12-02 19:17:06,279 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 365 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:06,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 207 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:06,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-12-02 19:17:06,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2023-12-02 19:17:06,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 257 states have (on average 1.198443579766537) internal successors, (308), 308 states have internal predecessors, (308), 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) [2023-12-02 19:17:06,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 308 transitions. [2023-12-02 19:17:06,284 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 308 transitions. Word has length 127 [2023-12-02 19:17:06,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:06,284 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 308 transitions. [2023-12-02 19:17:06,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 42.333333333333336) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:06,284 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 308 transitions. [2023-12-02 19:17:06,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-02 19:17:06,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:06,285 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:06,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-02 19:17:06,285 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr115REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:06,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:06,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1041336533, now seen corresponding path program 1 times [2023-12-02 19:17:06,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:06,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112234883] [2023-12-02 19:17:06,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:06,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:06,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:06,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:06,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112234883] [2023-12-02 19:17:06,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112234883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:06,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:06,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:17:06,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294368824] [2023-12-02 19:17:06,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:06,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:17:06,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:06,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:17:06,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:17:06,738 INFO L87 Difference]: Start difference. First operand 309 states and 308 transitions. Second operand has 6 states, 5 states have (on average 25.4) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:07,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:07,248 INFO L93 Difference]: Finished difference Result 308 states and 307 transitions. [2023-12-02 19:17:07,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:07,248 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 25.4) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2023-12-02 19:17:07,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:07,250 INFO L225 Difference]: With dead ends: 308 [2023-12-02 19:17:07,250 INFO L226 Difference]: Without dead ends: 308 [2023-12-02 19:17:07,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:17:07,251 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 756 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:07,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 253 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:07,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-12-02 19:17:07,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2023-12-02 19:17:07,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 257 states have (on average 1.1945525291828794) internal successors, (307), 307 states have internal predecessors, (307), 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) [2023-12-02 19:17:07,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 307 transitions. [2023-12-02 19:17:07,255 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 307 transitions. Word has length 127 [2023-12-02 19:17:07,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:07,256 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 307 transitions. [2023-12-02 19:17:07,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 25.4) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:07,256 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 307 transitions. [2023-12-02 19:17:07,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-02 19:17:07,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:07,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:07,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-02 19:17:07,256 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr116REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:07,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:07,257 INFO L85 PathProgramCache]: Analyzing trace with hash 2044577502, now seen corresponding path program 1 times [2023-12-02 19:17:07,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:07,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268948760] [2023-12-02 19:17:07,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:07,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:07,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:07,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:07,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268948760] [2023-12-02 19:17:07,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268948760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:07,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:07,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:07,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801427169] [2023-12-02 19:17:07,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:07,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:07,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:07,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:07,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:07,431 INFO L87 Difference]: Start difference. First operand 308 states and 307 transitions. Second operand has 4 states, 3 states have (on average 44.0) internal successors, (132), 4 states have internal predecessors, (132), 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) [2023-12-02 19:17:07,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:07,636 INFO L93 Difference]: Finished difference Result 307 states and 306 transitions. [2023-12-02 19:17:07,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:07,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 44.0) internal successors, (132), 4 states have internal predecessors, (132), 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 132 [2023-12-02 19:17:07,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:07,638 INFO L225 Difference]: With dead ends: 307 [2023-12-02 19:17:07,638 INFO L226 Difference]: Without dead ends: 307 [2023-12-02 19:17:07,638 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 [2023-12-02 19:17:07,639 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 351 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:07,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 209 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:07,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-12-02 19:17:07,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2023-12-02 19:17:07,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 257 states have (on average 1.1906614785992218) internal successors, (306), 306 states have internal predecessors, (306), 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) [2023-12-02 19:17:07,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 306 transitions. [2023-12-02 19:17:07,645 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 306 transitions. Word has length 132 [2023-12-02 19:17:07,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:07,645 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 306 transitions. [2023-12-02 19:17:07,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 44.0) internal successors, (132), 4 states have internal predecessors, (132), 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) [2023-12-02 19:17:07,646 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 306 transitions. [2023-12-02 19:17:07,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-02 19:17:07,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:07,647 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:07,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-02 19:17:07,647 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:07,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:07,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2044577503, now seen corresponding path program 1 times [2023-12-02 19:17:07,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:07,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872582181] [2023-12-02 19:17:07,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:07,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:08,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:08,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:08,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872582181] [2023-12-02 19:17:08,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872582181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:08,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:08,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:17:08,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740297633] [2023-12-02 19:17:08,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:08,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:17:08,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:08,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:17:08,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:17:08,172 INFO L87 Difference]: Start difference. First operand 307 states and 306 transitions. Second operand has 7 states, 6 states have (on average 22.0) internal successors, (132), 7 states have internal predecessors, (132), 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) [2023-12-02 19:17:08,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:08,636 INFO L93 Difference]: Finished difference Result 306 states and 305 transitions. [2023-12-02 19:17:08,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:08,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 22.0) internal successors, (132), 7 states have internal predecessors, (132), 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 132 [2023-12-02 19:17:08,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:08,639 INFO L225 Difference]: With dead ends: 306 [2023-12-02 19:17:08,639 INFO L226 Difference]: Without dead ends: 306 [2023-12-02 19:17:08,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-02 19:17:08,639 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 816 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:08,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 256 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:08,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-12-02 19:17:08,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2023-12-02 19:17:08,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 257 states have (on average 1.1867704280155642) internal successors, (305), 305 states have internal predecessors, (305), 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) [2023-12-02 19:17:08,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 305 transitions. [2023-12-02 19:17:08,643 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 305 transitions. Word has length 132 [2023-12-02 19:17:08,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:08,643 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 305 transitions. [2023-12-02 19:17:08,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 22.0) internal successors, (132), 7 states have internal predecessors, (132), 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) [2023-12-02 19:17:08,643 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 305 transitions. [2023-12-02 19:17:08,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-02 19:17:08,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:08,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:08,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-02 19:17:08,644 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr118REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:08,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:08,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1676653851, now seen corresponding path program 1 times [2023-12-02 19:17:08,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:08,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17310577] [2023-12-02 19:17:08,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:08,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:08,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:08,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17310577] [2023-12-02 19:17:08,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17310577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:08,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:08,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:08,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954658223] [2023-12-02 19:17:08,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:08,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:08,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:08,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:08,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:08,830 INFO L87 Difference]: Start difference. First operand 306 states and 305 transitions. Second operand has 4 states, 3 states have (on average 45.666666666666664) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:09,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:09,013 INFO L93 Difference]: Finished difference Result 305 states and 304 transitions. [2023-12-02 19:17:09,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:09,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 45.666666666666664) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2023-12-02 19:17:09,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:09,015 INFO L225 Difference]: With dead ends: 305 [2023-12-02 19:17:09,015 INFO L226 Difference]: Without dead ends: 305 [2023-12-02 19:17:09,015 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 [2023-12-02 19:17:09,016 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 337 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:09,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 211 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:09,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-12-02 19:17:09,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2023-12-02 19:17:09,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 257 states have (on average 1.1828793774319066) internal successors, (304), 304 states have internal predecessors, (304), 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) [2023-12-02 19:17:09,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 304 transitions. [2023-12-02 19:17:09,020 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 304 transitions. Word has length 137 [2023-12-02 19:17:09,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:09,020 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 304 transitions. [2023-12-02 19:17:09,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 45.666666666666664) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:09,021 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 304 transitions. [2023-12-02 19:17:09,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-02 19:17:09,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:09,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:09,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-02 19:17:09,022 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr119REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:09,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:09,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1676653850, now seen corresponding path program 1 times [2023-12-02 19:17:09,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:09,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726423308] [2023-12-02 19:17:09,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:09,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:09,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:09,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:09,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726423308] [2023-12-02 19:17:09,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726423308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:09,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:09,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:17:09,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904021639] [2023-12-02 19:17:09,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:09,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:17:09,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:09,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:17:09,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:17:09,489 INFO L87 Difference]: Start difference. First operand 305 states and 304 transitions. Second operand has 6 states, 5 states have (on average 27.4) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:09,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:09,974 INFO L93 Difference]: Finished difference Result 304 states and 303 transitions. [2023-12-02 19:17:09,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:09,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 27.4) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2023-12-02 19:17:09,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:09,976 INFO L225 Difference]: With dead ends: 304 [2023-12-02 19:17:09,976 INFO L226 Difference]: Without dead ends: 304 [2023-12-02 19:17:09,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:17:09,977 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 551 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:09,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 258 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:09,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-12-02 19:17:09,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2023-12-02 19:17:09,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 257 states have (on average 1.178988326848249) internal successors, (303), 303 states have internal predecessors, (303), 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) [2023-12-02 19:17:09,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 303 transitions. [2023-12-02 19:17:09,981 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 303 transitions. Word has length 137 [2023-12-02 19:17:09,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:09,981 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 303 transitions. [2023-12-02 19:17:09,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 27.4) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:09,982 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 303 transitions. [2023-12-02 19:17:09,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-02 19:17:09,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:09,983 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:09,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-02 19:17:09,983 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr120REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:09,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:09,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1438236431, now seen corresponding path program 1 times [2023-12-02 19:17:09,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:09,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300209885] [2023-12-02 19:17:09,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:09,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:10,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:10,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:10,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300209885] [2023-12-02 19:17:10,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300209885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:10,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:10,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:10,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779293208] [2023-12-02 19:17:10,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:10,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:10,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:10,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:10,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:10,167 INFO L87 Difference]: Start difference. First operand 304 states and 303 transitions. Second operand has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 4 states have internal predecessors, (142), 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) [2023-12-02 19:17:10,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:10,366 INFO L93 Difference]: Finished difference Result 303 states and 302 transitions. [2023-12-02 19:17:10,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:10,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 4 states have internal predecessors, (142), 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 142 [2023-12-02 19:17:10,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:10,368 INFO L225 Difference]: With dead ends: 303 [2023-12-02 19:17:10,368 INFO L226 Difference]: Without dead ends: 303 [2023-12-02 19:17:10,368 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 [2023-12-02 19:17:10,368 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 323 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:10,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 213 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:10,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-12-02 19:17:10,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2023-12-02 19:17:10,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 257 states have (on average 1.1750972762645915) internal successors, (302), 302 states have internal predecessors, (302), 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) [2023-12-02 19:17:10,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 302 transitions. [2023-12-02 19:17:10,372 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 302 transitions. Word has length 142 [2023-12-02 19:17:10,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:10,373 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 302 transitions. [2023-12-02 19:17:10,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 4 states have internal predecessors, (142), 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) [2023-12-02 19:17:10,373 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 302 transitions. [2023-12-02 19:17:10,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-02 19:17:10,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:10,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:10,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-02 19:17:10,373 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr121REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:10,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:10,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1438236432, now seen corresponding path program 1 times [2023-12-02 19:17:10,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:10,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18623795] [2023-12-02 19:17:10,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:10,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:10,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:10,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:10,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18623795] [2023-12-02 19:17:10,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18623795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:10,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:10,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:17:10,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361643368] [2023-12-02 19:17:10,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:10,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:17:10,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:10,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:17:10,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:17:10,859 INFO L87 Difference]: Start difference. First operand 303 states and 302 transitions. Second operand has 6 states, 5 states have (on average 28.4) internal successors, (142), 6 states have internal predecessors, (142), 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) [2023-12-02 19:17:11,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:11,330 INFO L93 Difference]: Finished difference Result 302 states and 301 transitions. [2023-12-02 19:17:11,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:11,330 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 28.4) internal successors, (142), 6 states have internal predecessors, (142), 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 142 [2023-12-02 19:17:11,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:11,332 INFO L225 Difference]: With dead ends: 302 [2023-12-02 19:17:11,332 INFO L226 Difference]: Without dead ends: 302 [2023-12-02 19:17:11,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:17:11,333 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 540 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:11,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 260 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:11,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-12-02 19:17:11,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2023-12-02 19:17:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 257 states have (on average 1.171206225680934) internal successors, (301), 301 states have internal predecessors, (301), 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) [2023-12-02 19:17:11,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 301 transitions. [2023-12-02 19:17:11,337 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 301 transitions. Word has length 142 [2023-12-02 19:17:11,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:11,338 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 301 transitions. [2023-12-02 19:17:11,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 28.4) internal successors, (142), 6 states have internal predecessors, (142), 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) [2023-12-02 19:17:11,338 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 301 transitions. [2023-12-02 19:17:11,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-02 19:17:11,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:11,339 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:11,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-12-02 19:17:11,339 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr122REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:11,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:11,339 INFO L85 PathProgramCache]: Analyzing trace with hash 2021384438, now seen corresponding path program 1 times [2023-12-02 19:17:11,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:11,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12691286] [2023-12-02 19:17:11,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:11,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:11,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:11,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12691286] [2023-12-02 19:17:11,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12691286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:11,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:11,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:11,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342089044] [2023-12-02 19:17:11,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:11,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:11,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:11,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:11,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:11,560 INFO L87 Difference]: Start difference. First operand 302 states and 301 transitions. Second operand has 4 states, 3 states have (on average 49.0) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:11,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:11,773 INFO L93 Difference]: Finished difference Result 301 states and 300 transitions. [2023-12-02 19:17:11,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:11,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 49.0) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2023-12-02 19:17:11,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:11,774 INFO L225 Difference]: With dead ends: 301 [2023-12-02 19:17:11,774 INFO L226 Difference]: Without dead ends: 301 [2023-12-02 19:17:11,775 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 [2023-12-02 19:17:11,775 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 309 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:11,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 215 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:11,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-02 19:17:11,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2023-12-02 19:17:11,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 257 states have (on average 1.1673151750972763) internal successors, (300), 300 states have internal predecessors, (300), 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) [2023-12-02 19:17:11,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 300 transitions. [2023-12-02 19:17:11,778 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 300 transitions. Word has length 147 [2023-12-02 19:17:11,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:11,778 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 300 transitions. [2023-12-02 19:17:11,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 49.0) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:11,779 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 300 transitions. [2023-12-02 19:17:11,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-02 19:17:11,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:11,779 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:11,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-12-02 19:17:11,779 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr123REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:11,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:11,780 INFO L85 PathProgramCache]: Analyzing trace with hash 2021384439, now seen corresponding path program 1 times [2023-12-02 19:17:11,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:11,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134069940] [2023-12-02 19:17:11,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:11,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:12,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:12,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134069940] [2023-12-02 19:17:12,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134069940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:12,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:12,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:17:12,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602450117] [2023-12-02 19:17:12,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:12,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:17:12,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:12,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:17:12,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:17:12,299 INFO L87 Difference]: Start difference. First operand 301 states and 300 transitions. Second operand has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:12,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:12,837 INFO L93 Difference]: Finished difference Result 300 states and 299 transitions. [2023-12-02 19:17:12,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:12,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2023-12-02 19:17:12,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:12,839 INFO L225 Difference]: With dead ends: 300 [2023-12-02 19:17:12,839 INFO L226 Difference]: Without dead ends: 300 [2023-12-02 19:17:12,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:17:12,840 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 684 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:12,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 261 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:17:12,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-12-02 19:17:12,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2023-12-02 19:17:12,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 257 states have (on average 1.1634241245136188) internal successors, (299), 299 states have internal predecessors, (299), 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) [2023-12-02 19:17:12,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 299 transitions. [2023-12-02 19:17:12,846 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 299 transitions. Word has length 147 [2023-12-02 19:17:12,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:12,846 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 299 transitions. [2023-12-02 19:17:12,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:12,847 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 299 transitions. [2023-12-02 19:17:12,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-02 19:17:12,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:12,848 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:12,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-12-02 19:17:12,848 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr124REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:12,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:12,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1710398656, now seen corresponding path program 1 times [2023-12-02 19:17:12,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:12,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949872303] [2023-12-02 19:17:12,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:12,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:13,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:13,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:13,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949872303] [2023-12-02 19:17:13,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949872303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:13,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:13,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:13,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911829830] [2023-12-02 19:17:13,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:13,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:13,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:13,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:13,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:13,065 INFO L87 Difference]: Start difference. First operand 300 states and 299 transitions. Second operand has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 4 states have internal predecessors, (152), 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) [2023-12-02 19:17:13,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:13,267 INFO L93 Difference]: Finished difference Result 299 states and 298 transitions. [2023-12-02 19:17:13,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:13,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 4 states have internal predecessors, (152), 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 152 [2023-12-02 19:17:13,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:13,268 INFO L225 Difference]: With dead ends: 299 [2023-12-02 19:17:13,269 INFO L226 Difference]: Without dead ends: 299 [2023-12-02 19:17:13,269 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 [2023-12-02 19:17:13,269 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 295 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:13,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 217 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:13,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-02 19:17:13,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-12-02 19:17:13,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 257 states have (on average 1.1595330739299612) internal successors, (298), 298 states have internal predecessors, (298), 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) [2023-12-02 19:17:13,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 298 transitions. [2023-12-02 19:17:13,272 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 298 transitions. Word has length 152 [2023-12-02 19:17:13,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:13,272 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 298 transitions. [2023-12-02 19:17:13,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 4 states have internal predecessors, (152), 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) [2023-12-02 19:17:13,272 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 298 transitions. [2023-12-02 19:17:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-02 19:17:13,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:13,273 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:13,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-02 19:17:13,273 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr125REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:13,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:13,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1710398655, now seen corresponding path program 1 times [2023-12-02 19:17:13,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:13,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592177872] [2023-12-02 19:17:13,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:13,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:13,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:13,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:13,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592177872] [2023-12-02 19:17:13,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592177872] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:13,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:13,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:17:13,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379467585] [2023-12-02 19:17:13,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:13,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:17:13,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:13,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:17:13,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:17:13,820 INFO L87 Difference]: Start difference. First operand 299 states and 298 transitions. Second operand has 7 states, 6 states have (on average 25.333333333333332) internal successors, (152), 7 states have internal predecessors, (152), 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) [2023-12-02 19:17:14,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:14,319 INFO L93 Difference]: Finished difference Result 298 states and 297 transitions. [2023-12-02 19:17:14,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:14,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 25.333333333333332) internal successors, (152), 7 states have internal predecessors, (152), 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 152 [2023-12-02 19:17:14,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:14,320 INFO L225 Difference]: With dead ends: 298 [2023-12-02 19:17:14,320 INFO L226 Difference]: Without dead ends: 298 [2023-12-02 19:17:14,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-02 19:17:14,321 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 518 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:14,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 264 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:14,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-12-02 19:17:14,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2023-12-02 19:17:14,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 257 states have (on average 1.1556420233463034) internal successors, (297), 297 states have internal predecessors, (297), 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) [2023-12-02 19:17:14,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 297 transitions. [2023-12-02 19:17:14,324 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 297 transitions. Word has length 152 [2023-12-02 19:17:14,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:14,324 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 297 transitions. [2023-12-02 19:17:14,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 25.333333333333332) internal successors, (152), 7 states have internal predecessors, (152), 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) [2023-12-02 19:17:14,324 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 297 transitions. [2023-12-02 19:17:14,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-02 19:17:14,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:14,325 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:14,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-12-02 19:17:14,325 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr126REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:14,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:14,325 INFO L85 PathProgramCache]: Analyzing trace with hash 542853895, now seen corresponding path program 1 times [2023-12-02 19:17:14,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:14,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619957386] [2023-12-02 19:17:14,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:14,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:14,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:14,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619957386] [2023-12-02 19:17:14,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619957386] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:14,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:14,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:14,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762068869] [2023-12-02 19:17:14,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:14,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:14,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:14,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:14,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:14,524 INFO L87 Difference]: Start difference. First operand 298 states and 297 transitions. Second operand has 4 states, 3 states have (on average 52.333333333333336) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:14,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:14,720 INFO L93 Difference]: Finished difference Result 297 states and 296 transitions. [2023-12-02 19:17:14,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:14,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 52.333333333333336) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2023-12-02 19:17:14,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:14,721 INFO L225 Difference]: With dead ends: 297 [2023-12-02 19:17:14,721 INFO L226 Difference]: Without dead ends: 297 [2023-12-02 19:17:14,721 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 [2023-12-02 19:17:14,722 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 281 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:14,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 219 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:14,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-12-02 19:17:14,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2023-12-02 19:17:14,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 257 states have (on average 1.1517509727626458) internal successors, (296), 296 states have internal predecessors, (296), 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) [2023-12-02 19:17:14,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 296 transitions. [2023-12-02 19:17:14,726 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 296 transitions. Word has length 157 [2023-12-02 19:17:14,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:14,726 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 296 transitions. [2023-12-02 19:17:14,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 52.333333333333336) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:14,727 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 296 transitions. [2023-12-02 19:17:14,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-02 19:17:14,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:14,728 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:14,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-12-02 19:17:14,728 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr127REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:14,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:14,728 INFO L85 PathProgramCache]: Analyzing trace with hash 542853896, now seen corresponding path program 1 times [2023-12-02 19:17:14,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:14,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183662295] [2023-12-02 19:17:14,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:14,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:15,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:15,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:15,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183662295] [2023-12-02 19:17:15,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183662295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:15,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:15,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:17:15,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810162517] [2023-12-02 19:17:15,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:15,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:17:15,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:15,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:17:15,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:17:15,245 INFO L87 Difference]: Start difference. First operand 297 states and 296 transitions. Second operand has 6 states, 5 states have (on average 31.4) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:15,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:15,792 INFO L93 Difference]: Finished difference Result 296 states and 295 transitions. [2023-12-02 19:17:15,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:15,793 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 31.4) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2023-12-02 19:17:15,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:15,794 INFO L225 Difference]: With dead ends: 296 [2023-12-02 19:17:15,794 INFO L226 Difference]: Without dead ends: 296 [2023-12-02 19:17:15,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:17:15,795 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 507 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:15,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 266 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:17:15,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-12-02 19:17:15,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2023-12-02 19:17:15,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 257 states have (on average 1.1478599221789882) internal successors, (295), 295 states have internal predecessors, (295), 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) [2023-12-02 19:17:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 295 transitions. [2023-12-02 19:17:15,799 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 295 transitions. Word has length 157 [2023-12-02 19:17:15,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:15,799 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 295 transitions. [2023-12-02 19:17:15,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 31.4) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:15,800 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 295 transitions. [2023-12-02 19:17:15,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-02 19:17:15,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:15,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:15,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-12-02 19:17:15,800 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr129REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:15,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:15,801 INFO L85 PathProgramCache]: Analyzing trace with hash 103920498, now seen corresponding path program 1 times [2023-12-02 19:17:15,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:15,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410877036] [2023-12-02 19:17:15,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:15,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:16,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:16,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410877036] [2023-12-02 19:17:16,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410877036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:16,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:16,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:17:16,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394510530] [2023-12-02 19:17:16,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:16,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:17:16,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:16,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:17:16,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:17:16,428 INFO L87 Difference]: Start difference. First operand 296 states and 295 transitions. Second operand has 6 states, 5 states have (on average 32.4) internal successors, (162), 6 states have internal predecessors, (162), 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) [2023-12-02 19:17:16,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:16,938 INFO L93 Difference]: Finished difference Result 295 states and 294 transitions. [2023-12-02 19:17:16,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:16,939 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 32.4) internal successors, (162), 6 states have internal predecessors, (162), 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 162 [2023-12-02 19:17:16,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:16,940 INFO L225 Difference]: With dead ends: 295 [2023-12-02 19:17:16,940 INFO L226 Difference]: Without dead ends: 295 [2023-12-02 19:17:16,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:17:16,941 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 499 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:16,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 268 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:17:16,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-12-02 19:17:16,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2023-12-02 19:17:16,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 257 states have (on average 1.1439688715953307) internal successors, (294), 294 states have internal predecessors, (294), 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) [2023-12-02 19:17:16,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 294 transitions. [2023-12-02 19:17:16,944 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 294 transitions. Word has length 162 [2023-12-02 19:17:16,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:16,944 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 294 transitions. [2023-12-02 19:17:16,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 32.4) internal successors, (162), 6 states have internal predecessors, (162), 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) [2023-12-02 19:17:16,944 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 294 transitions. [2023-12-02 19:17:16,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-02 19:17:16,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:16,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:16,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-12-02 19:17:16,945 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr128REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:16,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:16,945 INFO L85 PathProgramCache]: Analyzing trace with hash 103920497, now seen corresponding path program 1 times [2023-12-02 19:17:16,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:16,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988441756] [2023-12-02 19:17:16,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:16,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:17,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:17,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:17,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988441756] [2023-12-02 19:17:17,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988441756] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:17,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:17,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:17,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856090941] [2023-12-02 19:17:17,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:17,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:17,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:17,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:17,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:17,156 INFO L87 Difference]: Start difference. First operand 295 states and 294 transitions. Second operand has 4 states, 3 states have (on average 54.0) internal successors, (162), 4 states have internal predecessors, (162), 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) [2023-12-02 19:17:17,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:17,345 INFO L93 Difference]: Finished difference Result 294 states and 293 transitions. [2023-12-02 19:17:17,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:17,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 54.0) internal successors, (162), 4 states have internal predecessors, (162), 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 162 [2023-12-02 19:17:17,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:17,347 INFO L225 Difference]: With dead ends: 294 [2023-12-02 19:17:17,347 INFO L226 Difference]: Without dead ends: 294 [2023-12-02 19:17:17,347 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 [2023-12-02 19:17:17,348 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 265 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:17,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 221 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:17,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-02 19:17:17,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2023-12-02 19:17:17,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 257 states have (on average 1.140077821011673) internal successors, (293), 293 states have internal predecessors, (293), 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) [2023-12-02 19:17:17,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 293 transitions. [2023-12-02 19:17:17,352 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 293 transitions. Word has length 162 [2023-12-02 19:17:17,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:17,352 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 293 transitions. [2023-12-02 19:17:17,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 54.0) internal successors, (162), 4 states have internal predecessors, (162), 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) [2023-12-02 19:17:17,352 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 293 transitions. [2023-12-02 19:17:17,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-02 19:17:17,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:17,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:17,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-12-02 19:17:17,353 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr130REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:17,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:17,353 INFO L85 PathProgramCache]: Analyzing trace with hash -2081060584, now seen corresponding path program 1 times [2023-12-02 19:17:17,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:17,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719968764] [2023-12-02 19:17:17,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:17,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:17,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:17,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:17,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719968764] [2023-12-02 19:17:17,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719968764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:17,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:17,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:17,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132689269] [2023-12-02 19:17:17,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:17,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:17,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:17,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:17,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:17,579 INFO L87 Difference]: Start difference. First operand 294 states and 293 transitions. Second operand has 4 states, 3 states have (on average 55.666666666666664) internal successors, (167), 4 states have internal predecessors, (167), 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) [2023-12-02 19:17:17,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:17,787 INFO L93 Difference]: Finished difference Result 293 states and 292 transitions. [2023-12-02 19:17:17,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:17,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 55.666666666666664) internal successors, (167), 4 states have internal predecessors, (167), 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 167 [2023-12-02 19:17:17,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:17,789 INFO L225 Difference]: With dead ends: 293 [2023-12-02 19:17:17,789 INFO L226 Difference]: Without dead ends: 293 [2023-12-02 19:17:17,789 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 [2023-12-02 19:17:17,790 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 253 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:17,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 223 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:17,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-02 19:17:17,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2023-12-02 19:17:17,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 257 states have (on average 1.1361867704280155) internal successors, (292), 292 states have internal predecessors, (292), 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) [2023-12-02 19:17:17,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 292 transitions. [2023-12-02 19:17:17,793 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 292 transitions. Word has length 167 [2023-12-02 19:17:17,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:17,794 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 292 transitions. [2023-12-02 19:17:17,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 55.666666666666664) internal successors, (167), 4 states have internal predecessors, (167), 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) [2023-12-02 19:17:17,794 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 292 transitions. [2023-12-02 19:17:17,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-02 19:17:17,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:17,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:17,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-12-02 19:17:17,795 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr131REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:17,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:17,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2081060583, now seen corresponding path program 1 times [2023-12-02 19:17:17,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:17,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55783463] [2023-12-02 19:17:17,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:17,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:18,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:18,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:18,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55783463] [2023-12-02 19:17:18,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55783463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:18,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:18,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:17:18,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104243011] [2023-12-02 19:17:18,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:18,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:17:18,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:18,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:17:18,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:17:18,306 INFO L87 Difference]: Start difference. First operand 293 states and 292 transitions. Second operand has 7 states, 6 states have (on average 27.833333333333332) internal successors, (167), 7 states have internal predecessors, (167), 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) [2023-12-02 19:17:18,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:18,780 INFO L93 Difference]: Finished difference Result 292 states and 291 transitions. [2023-12-02 19:17:18,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:18,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 27.833333333333332) internal successors, (167), 7 states have internal predecessors, (167), 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 167 [2023-12-02 19:17:18,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:18,782 INFO L225 Difference]: With dead ends: 292 [2023-12-02 19:17:18,782 INFO L226 Difference]: Without dead ends: 292 [2023-12-02 19:17:18,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-02 19:17:18,782 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 485 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:18,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 270 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:18,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-12-02 19:17:18,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2023-12-02 19:17:18,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 257 states have (on average 1.132295719844358) internal successors, (291), 291 states have internal predecessors, (291), 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) [2023-12-02 19:17:18,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 291 transitions. [2023-12-02 19:17:18,785 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 291 transitions. Word has length 167 [2023-12-02 19:17:18,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:18,785 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 291 transitions. [2023-12-02 19:17:18,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 27.833333333333332) internal successors, (167), 7 states have internal predecessors, (167), 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) [2023-12-02 19:17:18,785 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 291 transitions. [2023-12-02 19:17:18,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-02 19:17:18,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:18,787 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:18,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-12-02 19:17:18,787 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr132REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:18,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:18,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1103122526, now seen corresponding path program 1 times [2023-12-02 19:17:18,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:18,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808721626] [2023-12-02 19:17:18,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:18,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:18,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:18,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:18,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808721626] [2023-12-02 19:17:18,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808721626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:18,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:18,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:18,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658749270] [2023-12-02 19:17:18,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:18,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:18,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:18,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:18,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:18,995 INFO L87 Difference]: Start difference. First operand 292 states and 291 transitions. Second operand has 4 states, 3 states have (on average 57.333333333333336) internal successors, (172), 4 states have internal predecessors, (172), 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) [2023-12-02 19:17:19,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:19,208 INFO L93 Difference]: Finished difference Result 291 states and 290 transitions. [2023-12-02 19:17:19,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:19,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 57.333333333333336) internal successors, (172), 4 states have internal predecessors, (172), 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 172 [2023-12-02 19:17:19,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:19,209 INFO L225 Difference]: With dead ends: 291 [2023-12-02 19:17:19,209 INFO L226 Difference]: Without dead ends: 291 [2023-12-02 19:17:19,209 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 [2023-12-02 19:17:19,210 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 239 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:19,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 225 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:19,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-12-02 19:17:19,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2023-12-02 19:17:19,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 257 states have (on average 1.1284046692607004) internal successors, (290), 290 states have internal predecessors, (290), 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) [2023-12-02 19:17:19,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 290 transitions. [2023-12-02 19:17:19,213 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 290 transitions. Word has length 172 [2023-12-02 19:17:19,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:19,213 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 290 transitions. [2023-12-02 19:17:19,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 57.333333333333336) internal successors, (172), 4 states have internal predecessors, (172), 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) [2023-12-02 19:17:19,213 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 290 transitions. [2023-12-02 19:17:19,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-02 19:17:19,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:19,214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:19,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-12-02 19:17:19,214 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr133REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:19,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:19,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1103122525, now seen corresponding path program 1 times [2023-12-02 19:17:19,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:19,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748990091] [2023-12-02 19:17:19,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:19,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:19,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:19,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748990091] [2023-12-02 19:17:19,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748990091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:19,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:19,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:17:19,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655692222] [2023-12-02 19:17:19,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:19,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:17:19,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:19,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:17:19,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:17:19,764 INFO L87 Difference]: Start difference. First operand 291 states and 290 transitions. Second operand has 7 states, 6 states have (on average 28.666666666666668) internal successors, (172), 7 states have internal predecessors, (172), 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) [2023-12-02 19:17:20,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:20,218 INFO L93 Difference]: Finished difference Result 290 states and 289 transitions. [2023-12-02 19:17:20,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:20,218 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 28.666666666666668) internal successors, (172), 7 states have internal predecessors, (172), 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 172 [2023-12-02 19:17:20,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:20,220 INFO L225 Difference]: With dead ends: 290 [2023-12-02 19:17:20,220 INFO L226 Difference]: Without dead ends: 290 [2023-12-02 19:17:20,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-02 19:17:20,220 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 474 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:20,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 272 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:20,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-12-02 19:17:20,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2023-12-02 19:17:20,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 257 states have (on average 1.1245136186770428) internal successors, (289), 289 states have internal predecessors, (289), 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) [2023-12-02 19:17:20,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 289 transitions. [2023-12-02 19:17:20,223 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 289 transitions. Word has length 172 [2023-12-02 19:17:20,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:20,224 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 289 transitions. [2023-12-02 19:17:20,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 28.666666666666668) internal successors, (172), 7 states have internal predecessors, (172), 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) [2023-12-02 19:17:20,224 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 289 transitions. [2023-12-02 19:17:20,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-02 19:17:20,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:20,225 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:20,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-12-02 19:17:20,225 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr134REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:20,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:20,225 INFO L85 PathProgramCache]: Analyzing trace with hash 651270953, now seen corresponding path program 1 times [2023-12-02 19:17:20,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:20,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147509956] [2023-12-02 19:17:20,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:20,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:20,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:20,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:20,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147509956] [2023-12-02 19:17:20,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147509956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:20,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:20,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:20,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816978743] [2023-12-02 19:17:20,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:20,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:20,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:20,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:20,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:20,450 INFO L87 Difference]: Start difference. First operand 290 states and 289 transitions. Second operand has 4 states, 3 states have (on average 59.0) internal successors, (177), 4 states have internal predecessors, (177), 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) [2023-12-02 19:17:20,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:20,647 INFO L93 Difference]: Finished difference Result 289 states and 288 transitions. [2023-12-02 19:17:20,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:20,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 59.0) internal successors, (177), 4 states have internal predecessors, (177), 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 177 [2023-12-02 19:17:20,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:20,649 INFO L225 Difference]: With dead ends: 289 [2023-12-02 19:17:20,649 INFO L226 Difference]: Without dead ends: 289 [2023-12-02 19:17:20,649 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 [2023-12-02 19:17:20,649 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 225 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:20,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 227 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:20,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-02 19:17:20,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2023-12-02 19:17:20,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 257 states have (on average 1.1206225680933852) internal successors, (288), 288 states have internal predecessors, (288), 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) [2023-12-02 19:17:20,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 288 transitions. [2023-12-02 19:17:20,652 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 288 transitions. Word has length 177 [2023-12-02 19:17:20,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:20,652 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 288 transitions. [2023-12-02 19:17:20,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 59.0) internal successors, (177), 4 states have internal predecessors, (177), 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) [2023-12-02 19:17:20,652 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 288 transitions. [2023-12-02 19:17:20,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-02 19:17:20,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:20,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:20,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-12-02 19:17:20,653 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr135REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:20,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:20,654 INFO L85 PathProgramCache]: Analyzing trace with hash 651270954, now seen corresponding path program 1 times [2023-12-02 19:17:20,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:20,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761612305] [2023-12-02 19:17:20,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:20,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:21,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:21,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:21,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761612305] [2023-12-02 19:17:21,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761612305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:21,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:21,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:17:21,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835020513] [2023-12-02 19:17:21,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:21,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:17:21,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:21,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:17:21,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:17:21,213 INFO L87 Difference]: Start difference. First operand 289 states and 288 transitions. Second operand has 6 states, 5 states have (on average 35.4) internal successors, (177), 6 states have internal predecessors, (177), 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) [2023-12-02 19:17:21,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:21,713 INFO L93 Difference]: Finished difference Result 288 states and 287 transitions. [2023-12-02 19:17:21,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:21,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 35.4) internal successors, (177), 6 states have internal predecessors, (177), 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 177 [2023-12-02 19:17:21,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:21,715 INFO L225 Difference]: With dead ends: 288 [2023-12-02 19:17:21,715 INFO L226 Difference]: Without dead ends: 288 [2023-12-02 19:17:21,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:17:21,715 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 463 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:21,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 274 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:21,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-12-02 19:17:21,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2023-12-02 19:17:21,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 257 states have (on average 1.1167315175097277) internal successors, (287), 287 states have internal predecessors, (287), 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) [2023-12-02 19:17:21,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 287 transitions. [2023-12-02 19:17:21,719 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 287 transitions. Word has length 177 [2023-12-02 19:17:21,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:21,720 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 287 transitions. [2023-12-02 19:17:21,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 35.4) internal successors, (177), 6 states have internal predecessors, (177), 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) [2023-12-02 19:17:21,720 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 287 transitions. [2023-12-02 19:17:21,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-02 19:17:21,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:21,721 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:21,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-12-02 19:17:21,721 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr136REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:21,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:21,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1527797715, now seen corresponding path program 1 times [2023-12-02 19:17:21,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:21,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531522740] [2023-12-02 19:17:21,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:21,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:21,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:21,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:21,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531522740] [2023-12-02 19:17:21,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531522740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:21,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:21,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:21,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216974713] [2023-12-02 19:17:21,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:21,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:21,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:21,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:21,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:21,976 INFO L87 Difference]: Start difference. First operand 288 states and 287 transitions. Second operand has 4 states, 3 states have (on average 60.666666666666664) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:22,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:22,155 INFO L93 Difference]: Finished difference Result 287 states and 286 transitions. [2023-12-02 19:17:22,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:22,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 60.666666666666664) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2023-12-02 19:17:22,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:22,157 INFO L225 Difference]: With dead ends: 287 [2023-12-02 19:17:22,157 INFO L226 Difference]: Without dead ends: 287 [2023-12-02 19:17:22,157 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 [2023-12-02 19:17:22,157 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 211 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:22,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 229 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:22,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-02 19:17:22,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2023-12-02 19:17:22,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 257 states have (on average 1.11284046692607) internal successors, (286), 286 states have internal predecessors, (286), 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) [2023-12-02 19:17:22,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 286 transitions. [2023-12-02 19:17:22,160 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 286 transitions. Word has length 182 [2023-12-02 19:17:22,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:22,160 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 286 transitions. [2023-12-02 19:17:22,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 60.666666666666664) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:22,161 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 286 transitions. [2023-12-02 19:17:22,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-02 19:17:22,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:22,162 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:22,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-12-02 19:17:22,162 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr137REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:22,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:22,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1527797716, now seen corresponding path program 1 times [2023-12-02 19:17:22,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:22,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682361482] [2023-12-02 19:17:22,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:22,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:22,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:22,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682361482] [2023-12-02 19:17:22,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682361482] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:22,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:22,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:17:22,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042410814] [2023-12-02 19:17:22,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:22,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:17:22,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:22,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:17:22,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:17:22,755 INFO L87 Difference]: Start difference. First operand 287 states and 286 transitions. Second operand has 7 states, 6 states have (on average 30.333333333333332) internal successors, (182), 7 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:23,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:23,231 INFO L93 Difference]: Finished difference Result 286 states and 285 transitions. [2023-12-02 19:17:23,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:23,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 30.333333333333332) internal successors, (182), 7 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2023-12-02 19:17:23,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:23,233 INFO L225 Difference]: With dead ends: 286 [2023-12-02 19:17:23,233 INFO L226 Difference]: Without dead ends: 286 [2023-12-02 19:17:23,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-02 19:17:23,233 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 558 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:23,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 275 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:23,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-12-02 19:17:23,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2023-12-02 19:17:23,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 257 states have (on average 1.1089494163424125) internal successors, (285), 285 states have internal predecessors, (285), 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) [2023-12-02 19:17:23,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 285 transitions. [2023-12-02 19:17:23,237 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 285 transitions. Word has length 182 [2023-12-02 19:17:23,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:23,237 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 285 transitions. [2023-12-02 19:17:23,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 30.333333333333332) internal successors, (182), 7 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:23,237 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 285 transitions. [2023-12-02 19:17:23,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-02 19:17:23,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:23,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:23,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-12-02 19:17:23,238 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr138REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:23,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:23,238 INFO L85 PathProgramCache]: Analyzing trace with hash 263618874, now seen corresponding path program 1 times [2023-12-02 19:17:23,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:23,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093721822] [2023-12-02 19:17:23,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:23,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:23,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:23,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093721822] [2023-12-02 19:17:23,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093721822] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:23,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:23,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:23,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733749921] [2023-12-02 19:17:23,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:23,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:23,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:23,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:23,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:23,463 INFO L87 Difference]: Start difference. First operand 286 states and 285 transitions. Second operand has 4 states, 3 states have (on average 62.333333333333336) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:23,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:23,672 INFO L93 Difference]: Finished difference Result 285 states and 284 transitions. [2023-12-02 19:17:23,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:23,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 62.333333333333336) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2023-12-02 19:17:23,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:23,673 INFO L225 Difference]: With dead ends: 285 [2023-12-02 19:17:23,673 INFO L226 Difference]: Without dead ends: 285 [2023-12-02 19:17:23,674 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 [2023-12-02 19:17:23,674 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 197 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:23,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 231 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:23,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-12-02 19:17:23,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2023-12-02 19:17:23,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 257 states have (on average 1.105058365758755) internal successors, (284), 284 states have internal predecessors, (284), 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) [2023-12-02 19:17:23,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 284 transitions. [2023-12-02 19:17:23,677 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 284 transitions. Word has length 187 [2023-12-02 19:17:23,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:23,677 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 284 transitions. [2023-12-02 19:17:23,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 62.333333333333336) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:23,677 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 284 transitions. [2023-12-02 19:17:23,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-02 19:17:23,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:23,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:23,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-12-02 19:17:23,678 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr139REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:23,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:23,678 INFO L85 PathProgramCache]: Analyzing trace with hash 263618875, now seen corresponding path program 1 times [2023-12-02 19:17:23,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:23,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253421899] [2023-12-02 19:17:23,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:23,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:24,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:24,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:24,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253421899] [2023-12-02 19:17:24,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253421899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:24,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:24,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:17:24,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971747260] [2023-12-02 19:17:24,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:24,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:17:24,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:24,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:17:24,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:17:24,239 INFO L87 Difference]: Start difference. First operand 285 states and 284 transitions. Second operand has 6 states, 5 states have (on average 37.4) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:24,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:24,706 INFO L93 Difference]: Finished difference Result 284 states and 283 transitions. [2023-12-02 19:17:24,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:24,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 37.4) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2023-12-02 19:17:24,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:24,708 INFO L225 Difference]: With dead ends: 284 [2023-12-02 19:17:24,708 INFO L226 Difference]: Without dead ends: 284 [2023-12-02 19:17:24,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:17:24,709 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 441 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:24,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 278 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:24,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-02 19:17:24,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2023-12-02 19:17:24,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 257 states have (on average 1.1011673151750974) internal successors, (283), 283 states have internal predecessors, (283), 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) [2023-12-02 19:17:24,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 283 transitions. [2023-12-02 19:17:24,713 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 283 transitions. Word has length 187 [2023-12-02 19:17:24,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:24,713 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 283 transitions. [2023-12-02 19:17:24,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 37.4) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:24,714 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 283 transitions. [2023-12-02 19:17:24,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-02 19:17:24,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:24,715 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:24,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-12-02 19:17:24,715 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr140REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:24,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:24,715 INFO L85 PathProgramCache]: Analyzing trace with hash -96687100, now seen corresponding path program 1 times [2023-12-02 19:17:24,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:24,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025309606] [2023-12-02 19:17:24,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:24,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:24,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:24,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025309606] [2023-12-02 19:17:24,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025309606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:24,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:24,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:24,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457047011] [2023-12-02 19:17:24,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:24,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:24,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:24,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:24,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:24,943 INFO L87 Difference]: Start difference. First operand 284 states and 283 transitions. Second operand has 4 states, 3 states have (on average 64.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2023-12-02 19:17:25,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:25,144 INFO L93 Difference]: Finished difference Result 283 states and 282 transitions. [2023-12-02 19:17:25,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:25,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 64.0) internal successors, (192), 4 states have internal predecessors, (192), 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 192 [2023-12-02 19:17:25,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:25,146 INFO L225 Difference]: With dead ends: 283 [2023-12-02 19:17:25,146 INFO L226 Difference]: Without dead ends: 283 [2023-12-02 19:17:25,146 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 [2023-12-02 19:17:25,146 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 183 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:25,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 233 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:25,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-12-02 19:17:25,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2023-12-02 19:17:25,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 257 states have (on average 1.0972762645914398) internal successors, (282), 282 states have internal predecessors, (282), 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) [2023-12-02 19:17:25,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 282 transitions. [2023-12-02 19:17:25,149 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 282 transitions. Word has length 192 [2023-12-02 19:17:25,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:25,149 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 282 transitions. [2023-12-02 19:17:25,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 64.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2023-12-02 19:17:25,150 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 282 transitions. [2023-12-02 19:17:25,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-02 19:17:25,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:25,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:25,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-12-02 19:17:25,150 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr141REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:25,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:25,151 INFO L85 PathProgramCache]: Analyzing trace with hash -96687099, now seen corresponding path program 1 times [2023-12-02 19:17:25,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:25,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159324605] [2023-12-02 19:17:25,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:25,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:25,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:25,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159324605] [2023-12-02 19:17:25,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159324605] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:25,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:25,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:17:25,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855318985] [2023-12-02 19:17:25,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:25,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:17:25,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:25,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:17:25,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:17:25,992 INFO L87 Difference]: Start difference. First operand 283 states and 282 transitions. Second operand has 7 states, 6 states have (on average 32.0) internal successors, (192), 7 states have internal predecessors, (192), 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) [2023-12-02 19:17:26,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:26,481 INFO L93 Difference]: Finished difference Result 282 states and 281 transitions. [2023-12-02 19:17:26,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:26,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 32.0) internal successors, (192), 7 states have internal predecessors, (192), 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 192 [2023-12-02 19:17:26,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:26,483 INFO L225 Difference]: With dead ends: 282 [2023-12-02 19:17:26,483 INFO L226 Difference]: Without dead ends: 282 [2023-12-02 19:17:26,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-02 19:17:26,483 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 660 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:26,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 280 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:26,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-12-02 19:17:26,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2023-12-02 19:17:26,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 257 states have (on average 1.093385214007782) internal successors, (281), 281 states have internal predecessors, (281), 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) [2023-12-02 19:17:26,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 281 transitions. [2023-12-02 19:17:26,487 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 281 transitions. Word has length 192 [2023-12-02 19:17:26,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:26,487 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 281 transitions. [2023-12-02 19:17:26,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 32.0) internal successors, (192), 7 states have internal predecessors, (192), 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) [2023-12-02 19:17:26,487 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 281 transitions. [2023-12-02 19:17:26,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-02 19:17:26,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:26,487 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:26,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-12-02 19:17:26,488 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr142REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:26,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:26,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1196737717, now seen corresponding path program 1 times [2023-12-02 19:17:26,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:26,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353461496] [2023-12-02 19:17:26,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:26,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:26,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:26,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:26,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353461496] [2023-12-02 19:17:26,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353461496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:26,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:26,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:26,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801304538] [2023-12-02 19:17:26,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:26,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:26,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:26,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:26,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:26,728 INFO L87 Difference]: Start difference. First operand 282 states and 281 transitions. Second operand has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 4 states have internal predecessors, (197), 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) [2023-12-02 19:17:26,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:26,922 INFO L93 Difference]: Finished difference Result 281 states and 280 transitions. [2023-12-02 19:17:26,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:26,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 4 states have internal predecessors, (197), 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 197 [2023-12-02 19:17:26,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:26,923 INFO L225 Difference]: With dead ends: 281 [2023-12-02 19:17:26,923 INFO L226 Difference]: Without dead ends: 281 [2023-12-02 19:17:26,924 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 [2023-12-02 19:17:26,924 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 169 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:26,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 235 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:26,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-02 19:17:26,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-12-02 19:17:26,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 257 states have (on average 1.0894941634241244) internal successors, (280), 280 states have internal predecessors, (280), 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) [2023-12-02 19:17:26,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 280 transitions. [2023-12-02 19:17:26,927 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 280 transitions. Word has length 197 [2023-12-02 19:17:26,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:26,927 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 280 transitions. [2023-12-02 19:17:26,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 4 states have internal predecessors, (197), 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) [2023-12-02 19:17:26,927 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 280 transitions. [2023-12-02 19:17:26,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-02 19:17:26,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:26,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:26,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-12-02 19:17:26,929 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr143REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:26,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:26,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1196737716, now seen corresponding path program 1 times [2023-12-02 19:17:26,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:26,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597819127] [2023-12-02 19:17:26,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:26,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:27,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:27,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597819127] [2023-12-02 19:17:27,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597819127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:27,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:27,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:17:27,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23499470] [2023-12-02 19:17:27,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:27,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:17:27,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:27,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:17:27,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:17:27,538 INFO L87 Difference]: Start difference. First operand 281 states and 280 transitions. Second operand has 7 states, 6 states have (on average 32.833333333333336) internal successors, (197), 7 states have internal predecessors, (197), 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) [2023-12-02 19:17:27,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:27,997 INFO L93 Difference]: Finished difference Result 280 states and 279 transitions. [2023-12-02 19:17:27,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:27,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 32.833333333333336) internal successors, (197), 7 states have internal predecessors, (197), 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 197 [2023-12-02 19:17:27,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:27,998 INFO L225 Difference]: With dead ends: 280 [2023-12-02 19:17:27,998 INFO L226 Difference]: Without dead ends: 280 [2023-12-02 19:17:27,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-02 19:17:27,999 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 647 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:27,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 282 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:27,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-12-02 19:17:28,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2023-12-02 19:17:28,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 257 states have (on average 1.0856031128404668) internal successors, (279), 279 states have internal predecessors, (279), 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) [2023-12-02 19:17:28,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 279 transitions. [2023-12-02 19:17:28,001 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 279 transitions. Word has length 197 [2023-12-02 19:17:28,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:28,002 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 279 transitions. [2023-12-02 19:17:28,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 32.833333333333336) internal successors, (197), 7 states have internal predecessors, (197), 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) [2023-12-02 19:17:28,002 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 279 transitions. [2023-12-02 19:17:28,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-02 19:17:28,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:28,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:28,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-12-02 19:17:28,003 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr144REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:28,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:28,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1310567477, now seen corresponding path program 1 times [2023-12-02 19:17:28,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:28,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101242353] [2023-12-02 19:17:28,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:28,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:28,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:28,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:28,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101242353] [2023-12-02 19:17:28,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101242353] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:28,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:28,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:28,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987143526] [2023-12-02 19:17:28,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:28,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:28,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:28,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:28,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:28,236 INFO L87 Difference]: Start difference. First operand 280 states and 279 transitions. Second operand has 4 states, 3 states have (on average 67.33333333333333) internal successors, (202), 4 states have internal predecessors, (202), 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) [2023-12-02 19:17:28,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:28,444 INFO L93 Difference]: Finished difference Result 279 states and 278 transitions. [2023-12-02 19:17:28,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:28,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 67.33333333333333) internal successors, (202), 4 states have internal predecessors, (202), 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 202 [2023-12-02 19:17:28,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:28,446 INFO L225 Difference]: With dead ends: 279 [2023-12-02 19:17:28,446 INFO L226 Difference]: Without dead ends: 279 [2023-12-02 19:17:28,446 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 [2023-12-02 19:17:28,447 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 155 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:28,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 237 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:28,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-12-02 19:17:28,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2023-12-02 19:17:28,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 257 states have (on average 1.0817120622568093) internal successors, (278), 278 states have internal predecessors, (278), 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) [2023-12-02 19:17:28,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 278 transitions. [2023-12-02 19:17:28,449 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 278 transitions. Word has length 202 [2023-12-02 19:17:28,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:28,450 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 278 transitions. [2023-12-02 19:17:28,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 67.33333333333333) internal successors, (202), 4 states have internal predecessors, (202), 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) [2023-12-02 19:17:28,450 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 278 transitions. [2023-12-02 19:17:28,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-02 19:17:28,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:28,450 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:28,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-12-02 19:17:28,451 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr145REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:28,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:28,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1310567478, now seen corresponding path program 1 times [2023-12-02 19:17:28,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:28,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220732778] [2023-12-02 19:17:28,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:28,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:29,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:29,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:29,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220732778] [2023-12-02 19:17:29,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220732778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:29,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:29,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:17:29,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182647290] [2023-12-02 19:17:29,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:29,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:17:29,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:29,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:17:29,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:17:29,050 INFO L87 Difference]: Start difference. First operand 279 states and 278 transitions. Second operand has 6 states, 5 states have (on average 40.4) internal successors, (202), 6 states have internal predecessors, (202), 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) [2023-12-02 19:17:29,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:29,488 INFO L93 Difference]: Finished difference Result 278 states and 277 transitions. [2023-12-02 19:17:29,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:29,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 40.4) internal successors, (202), 6 states have internal predecessors, (202), 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 202 [2023-12-02 19:17:29,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:29,490 INFO L225 Difference]: With dead ends: 278 [2023-12-02 19:17:29,490 INFO L226 Difference]: Without dead ends: 278 [2023-12-02 19:17:29,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:17:29,491 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 486 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:29,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 283 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:29,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-12-02 19:17:29,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2023-12-02 19:17:29,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 257 states have (on average 1.0778210116731517) internal successors, (277), 277 states have internal predecessors, (277), 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) [2023-12-02 19:17:29,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 277 transitions. [2023-12-02 19:17:29,494 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 277 transitions. Word has length 202 [2023-12-02 19:17:29,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:29,494 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 277 transitions. [2023-12-02 19:17:29,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 40.4) internal successors, (202), 6 states have internal predecessors, (202), 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) [2023-12-02 19:17:29,494 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 277 transitions. [2023-12-02 19:17:29,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-02 19:17:29,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:29,495 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:29,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-12-02 19:17:29,495 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr146REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:29,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:29,495 INFO L85 PathProgramCache]: Analyzing trace with hash -17381028, now seen corresponding path program 1 times [2023-12-02 19:17:29,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:29,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481240001] [2023-12-02 19:17:29,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:29,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:29,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:29,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:29,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481240001] [2023-12-02 19:17:29,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481240001] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:29,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:29,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:29,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168535330] [2023-12-02 19:17:29,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:29,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:29,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:29,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:29,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:29,735 INFO L87 Difference]: Start difference. First operand 278 states and 277 transitions. Second operand has 4 states, 3 states have (on average 69.0) internal successors, (207), 4 states have internal predecessors, (207), 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) [2023-12-02 19:17:29,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:29,943 INFO L93 Difference]: Finished difference Result 277 states and 276 transitions. [2023-12-02 19:17:29,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:29,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 69.0) internal successors, (207), 4 states have internal predecessors, (207), 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 207 [2023-12-02 19:17:29,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:29,944 INFO L225 Difference]: With dead ends: 277 [2023-12-02 19:17:29,944 INFO L226 Difference]: Without dead ends: 277 [2023-12-02 19:17:29,945 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 [2023-12-02 19:17:29,945 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 141 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:29,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 239 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:29,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-12-02 19:17:29,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2023-12-02 19:17:29,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 257 states have (on average 1.0739299610894941) internal successors, (276), 276 states have internal predecessors, (276), 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) [2023-12-02 19:17:29,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 276 transitions. [2023-12-02 19:17:29,948 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 276 transitions. Word has length 207 [2023-12-02 19:17:29,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:29,949 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 276 transitions. [2023-12-02 19:17:29,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 69.0) internal successors, (207), 4 states have internal predecessors, (207), 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) [2023-12-02 19:17:29,949 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 276 transitions. [2023-12-02 19:17:29,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-02 19:17:29,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:29,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:29,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-12-02 19:17:29,950 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr147REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:29,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:29,950 INFO L85 PathProgramCache]: Analyzing trace with hash -17381027, now seen corresponding path program 1 times [2023-12-02 19:17:29,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:29,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135988453] [2023-12-02 19:17:29,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:29,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:30,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:30,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:30,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135988453] [2023-12-02 19:17:30,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135988453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:30,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:30,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:17:30,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947758265] [2023-12-02 19:17:30,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:30,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:17:30,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:30,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:17:30,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:17:30,560 INFO L87 Difference]: Start difference. First operand 277 states and 276 transitions. Second operand has 7 states, 6 states have (on average 34.5) internal successors, (207), 7 states have internal predecessors, (207), 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) [2023-12-02 19:17:31,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:31,012 INFO L93 Difference]: Finished difference Result 276 states and 275 transitions. [2023-12-02 19:17:31,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:31,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 34.5) internal successors, (207), 7 states have internal predecessors, (207), 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 207 [2023-12-02 19:17:31,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:31,014 INFO L225 Difference]: With dead ends: 276 [2023-12-02 19:17:31,014 INFO L226 Difference]: Without dead ends: 276 [2023-12-02 19:17:31,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-02 19:17:31,014 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 621 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:31,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 286 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:31,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-12-02 19:17:31,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2023-12-02 19:17:31,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 257 states have (on average 1.0700389105058365) internal successors, (275), 275 states have internal predecessors, (275), 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) [2023-12-02 19:17:31,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 275 transitions. [2023-12-02 19:17:31,017 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 275 transitions. Word has length 207 [2023-12-02 19:17:31,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:31,017 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 275 transitions. [2023-12-02 19:17:31,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 34.5) internal successors, (207), 7 states have internal predecessors, (207), 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) [2023-12-02 19:17:31,017 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 275 transitions. [2023-12-02 19:17:31,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-02 19:17:31,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:31,018 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:31,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-12-02 19:17:31,018 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr148REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:31,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:31,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1379116954, now seen corresponding path program 1 times [2023-12-02 19:17:31,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:31,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105880480] [2023-12-02 19:17:31,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:31,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:31,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:31,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:31,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105880480] [2023-12-02 19:17:31,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105880480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:31,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:31,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:31,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830293833] [2023-12-02 19:17:31,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:31,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:31,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:31,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:31,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:31,269 INFO L87 Difference]: Start difference. First operand 276 states and 275 transitions. Second operand has 4 states, 3 states have (on average 70.66666666666667) internal successors, (212), 4 states have internal predecessors, (212), 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) [2023-12-02 19:17:31,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:31,505 INFO L93 Difference]: Finished difference Result 275 states and 274 transitions. [2023-12-02 19:17:31,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:31,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 70.66666666666667) internal successors, (212), 4 states have internal predecessors, (212), 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 212 [2023-12-02 19:17:31,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:31,507 INFO L225 Difference]: With dead ends: 275 [2023-12-02 19:17:31,507 INFO L226 Difference]: Without dead ends: 275 [2023-12-02 19:17:31,508 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 [2023-12-02 19:17:31,508 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 127 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:31,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 241 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:31,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-12-02 19:17:31,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2023-12-02 19:17:31,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 257 states have (on average 1.066147859922179) internal successors, (274), 274 states have internal predecessors, (274), 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) [2023-12-02 19:17:31,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 274 transitions. [2023-12-02 19:17:31,524 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 274 transitions. Word has length 212 [2023-12-02 19:17:31,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:31,524 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 274 transitions. [2023-12-02 19:17:31,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 70.66666666666667) internal successors, (212), 4 states have internal predecessors, (212), 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) [2023-12-02 19:17:31,524 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 274 transitions. [2023-12-02 19:17:31,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-02 19:17:31,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:31,525 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:31,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-12-02 19:17:31,525 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr149REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:31,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:31,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1379116953, now seen corresponding path program 1 times [2023-12-02 19:17:31,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:31,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197662510] [2023-12-02 19:17:31,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:31,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:32,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:32,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:32,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197662510] [2023-12-02 19:17:32,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197662510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:32,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:32,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:17:32,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829376702] [2023-12-02 19:17:32,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:32,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:17:32,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:32,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:17:32,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:17:32,142 INFO L87 Difference]: Start difference. First operand 275 states and 274 transitions. Second operand has 6 states, 5 states have (on average 42.4) internal successors, (212), 6 states have internal predecessors, (212), 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) [2023-12-02 19:17:32,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:32,620 INFO L93 Difference]: Finished difference Result 274 states and 273 transitions. [2023-12-02 19:17:32,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:32,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 42.4) internal successors, (212), 6 states have internal predecessors, (212), 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 212 [2023-12-02 19:17:32,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:32,621 INFO L225 Difference]: With dead ends: 274 [2023-12-02 19:17:32,621 INFO L226 Difference]: Without dead ends: 274 [2023-12-02 19:17:32,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:17:32,622 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 450 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:32,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 287 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:32,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-12-02 19:17:32,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2023-12-02 19:17:32,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 257 states have (on average 1.0622568093385214) internal successors, (273), 273 states have internal predecessors, (273), 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) [2023-12-02 19:17:32,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 273 transitions. [2023-12-02 19:17:32,626 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 273 transitions. Word has length 212 [2023-12-02 19:17:32,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:32,626 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 273 transitions. [2023-12-02 19:17:32,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 42.4) internal successors, (212), 6 states have internal predecessors, (212), 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) [2023-12-02 19:17:32,626 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 273 transitions. [2023-12-02 19:17:32,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-02 19:17:32,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:32,627 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:32,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-12-02 19:17:32,627 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr150REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:32,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:32,628 INFO L85 PathProgramCache]: Analyzing trace with hash 320875373, now seen corresponding path program 1 times [2023-12-02 19:17:32,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:32,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35481694] [2023-12-02 19:17:32,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:32,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:32,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:32,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35481694] [2023-12-02 19:17:32,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35481694] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:32,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:32,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:32,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966720405] [2023-12-02 19:17:32,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:32,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:32,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:32,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:32,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:32,879 INFO L87 Difference]: Start difference. First operand 274 states and 273 transitions. Second operand has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 4 states have internal predecessors, (217), 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) [2023-12-02 19:17:33,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:33,101 INFO L93 Difference]: Finished difference Result 273 states and 272 transitions. [2023-12-02 19:17:33,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:33,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 4 states have internal predecessors, (217), 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 217 [2023-12-02 19:17:33,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:33,103 INFO L225 Difference]: With dead ends: 273 [2023-12-02 19:17:33,103 INFO L226 Difference]: Without dead ends: 273 [2023-12-02 19:17:33,104 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 [2023-12-02 19:17:33,104 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 113 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:33,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 243 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:33,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-02 19:17:33,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-12-02 19:17:33,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 257 states have (on average 1.0583657587548638) internal successors, (272), 272 states have internal predecessors, (272), 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) [2023-12-02 19:17:33,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 272 transitions. [2023-12-02 19:17:33,107 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 272 transitions. Word has length 217 [2023-12-02 19:17:33,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:33,107 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 272 transitions. [2023-12-02 19:17:33,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 4 states have internal predecessors, (217), 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) [2023-12-02 19:17:33,107 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 272 transitions. [2023-12-02 19:17:33,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-02 19:17:33,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:33,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:33,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-12-02 19:17:33,109 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr151REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:33,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:33,109 INFO L85 PathProgramCache]: Analyzing trace with hash 320875374, now seen corresponding path program 1 times [2023-12-02 19:17:33,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:33,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516955468] [2023-12-02 19:17:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:33,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:33,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:33,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:33,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516955468] [2023-12-02 19:17:33,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516955468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:33,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:33,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:17:33,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696528826] [2023-12-02 19:17:33,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:33,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:17:33,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:33,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:17:33,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:17:33,754 INFO L87 Difference]: Start difference. First operand 273 states and 272 transitions. Second operand has 7 states, 6 states have (on average 36.166666666666664) internal successors, (217), 7 states have internal predecessors, (217), 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) [2023-12-02 19:17:34,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:34,204 INFO L93 Difference]: Finished difference Result 272 states and 271 transitions. [2023-12-02 19:17:34,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:34,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 36.166666666666664) internal successors, (217), 7 states have internal predecessors, (217), 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 217 [2023-12-02 19:17:34,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:34,206 INFO L225 Difference]: With dead ends: 272 [2023-12-02 19:17:34,206 INFO L226 Difference]: Without dead ends: 272 [2023-12-02 19:17:34,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-12-02 19:17:34,206 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 375 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:34,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 290 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:34,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-12-02 19:17:34,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2023-12-02 19:17:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 257 states have (on average 1.0544747081712063) internal successors, (271), 271 states have internal predecessors, (271), 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) [2023-12-02 19:17:34,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 271 transitions. [2023-12-02 19:17:34,209 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 271 transitions. Word has length 217 [2023-12-02 19:17:34,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:34,209 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 271 transitions. [2023-12-02 19:17:34,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 36.166666666666664) internal successors, (217), 7 states have internal predecessors, (217), 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) [2023-12-02 19:17:34,210 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 271 transitions. [2023-12-02 19:17:34,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-02 19:17:34,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:34,211 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:34,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-12-02 19:17:34,211 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr152REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:34,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:34,211 INFO L85 PathProgramCache]: Analyzing trace with hash 622964887, now seen corresponding path program 1 times [2023-12-02 19:17:34,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:34,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682403884] [2023-12-02 19:17:34,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:34,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:34,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:34,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:34,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682403884] [2023-12-02 19:17:34,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682403884] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:34,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:34,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:34,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603791370] [2023-12-02 19:17:34,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:34,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:34,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:34,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:34,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:34,463 INFO L87 Difference]: Start difference. First operand 272 states and 271 transitions. Second operand has 4 states, 3 states have (on average 74.0) internal successors, (222), 4 states have internal predecessors, (222), 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) [2023-12-02 19:17:34,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:34,630 INFO L93 Difference]: Finished difference Result 271 states and 270 transitions. [2023-12-02 19:17:34,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:34,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 74.0) internal successors, (222), 4 states have internal predecessors, (222), 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 222 [2023-12-02 19:17:34,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:34,632 INFO L225 Difference]: With dead ends: 271 [2023-12-02 19:17:34,632 INFO L226 Difference]: Without dead ends: 271 [2023-12-02 19:17:34,632 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 [2023-12-02 19:17:34,632 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 99 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:34,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 245 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:34,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-12-02 19:17:34,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2023-12-02 19:17:34,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 257 states have (on average 1.0505836575875487) internal successors, (270), 270 states have internal predecessors, (270), 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) [2023-12-02 19:17:34,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 270 transitions. [2023-12-02 19:17:34,636 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 270 transitions. Word has length 222 [2023-12-02 19:17:34,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:34,636 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 270 transitions. [2023-12-02 19:17:34,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 74.0) internal successors, (222), 4 states have internal predecessors, (222), 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) [2023-12-02 19:17:34,636 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 270 transitions. [2023-12-02 19:17:34,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-02 19:17:34,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:34,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:34,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-12-02 19:17:34,637 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr153REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:34,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:34,637 INFO L85 PathProgramCache]: Analyzing trace with hash 622964888, now seen corresponding path program 1 times [2023-12-02 19:17:34,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:34,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904954632] [2023-12-02 19:17:34,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:34,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:35,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:35,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:35,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904954632] [2023-12-02 19:17:35,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904954632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:35,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:35,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:17:35,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605771283] [2023-12-02 19:17:35,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:35,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:17:35,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:35,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:17:35,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:17:35,283 INFO L87 Difference]: Start difference. First operand 271 states and 270 transitions. Second operand has 6 states, 5 states have (on average 44.4) internal successors, (222), 6 states have internal predecessors, (222), 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) [2023-12-02 19:17:35,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:35,754 INFO L93 Difference]: Finished difference Result 270 states and 269 transitions. [2023-12-02 19:17:35,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:35,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 44.4) internal successors, (222), 6 states have internal predecessors, (222), 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 222 [2023-12-02 19:17:35,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:35,756 INFO L225 Difference]: With dead ends: 270 [2023-12-02 19:17:35,756 INFO L226 Difference]: Without dead ends: 270 [2023-12-02 19:17:35,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:17:35,757 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 364 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:35,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 292 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:35,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-12-02 19:17:35,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2023-12-02 19:17:35,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 257 states have (on average 1.046692607003891) internal successors, (269), 269 states have internal predecessors, (269), 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) [2023-12-02 19:17:35,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 269 transitions. [2023-12-02 19:17:35,759 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 269 transitions. Word has length 222 [2023-12-02 19:17:35,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:35,760 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 269 transitions. [2023-12-02 19:17:35,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 44.4) internal successors, (222), 6 states have internal predecessors, (222), 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) [2023-12-02 19:17:35,760 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 269 transitions. [2023-12-02 19:17:35,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-12-02 19:17:35,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:35,761 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:35,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-12-02 19:17:35,761 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr154REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:35,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:35,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1760452990, now seen corresponding path program 1 times [2023-12-02 19:17:35,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:35,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266448292] [2023-12-02 19:17:35,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:35,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:36,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:36,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:36,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266448292] [2023-12-02 19:17:36,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266448292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:36,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:36,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:36,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114695133] [2023-12-02 19:17:36,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:36,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:36,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:36,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:36,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:36,029 INFO L87 Difference]: Start difference. First operand 270 states and 269 transitions. Second operand has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 4 states have internal predecessors, (227), 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) [2023-12-02 19:17:36,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:36,234 INFO L93 Difference]: Finished difference Result 269 states and 268 transitions. [2023-12-02 19:17:36,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:36,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 4 states have internal predecessors, (227), 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 227 [2023-12-02 19:17:36,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:36,236 INFO L225 Difference]: With dead ends: 269 [2023-12-02 19:17:36,236 INFO L226 Difference]: Without dead ends: 269 [2023-12-02 19:17:36,236 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 [2023-12-02 19:17:36,236 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 85 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:36,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 247 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:36,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-12-02 19:17:36,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2023-12-02 19:17:36,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 257 states have (on average 1.0428015564202335) internal successors, (268), 268 states have internal predecessors, (268), 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) [2023-12-02 19:17:36,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 268 transitions. [2023-12-02 19:17:36,240 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 268 transitions. Word has length 227 [2023-12-02 19:17:36,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:36,240 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 268 transitions. [2023-12-02 19:17:36,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 4 states have internal predecessors, (227), 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) [2023-12-02 19:17:36,240 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 268 transitions. [2023-12-02 19:17:36,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-12-02 19:17:36,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:36,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:36,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-12-02 19:17:36,241 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr155REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:36,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:36,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1760452991, now seen corresponding path program 1 times [2023-12-02 19:17:36,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:36,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052923009] [2023-12-02 19:17:36,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:36,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:36,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:36,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:36,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052923009] [2023-12-02 19:17:36,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052923009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:36,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:36,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:17:36,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567614191] [2023-12-02 19:17:36,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:36,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:17:36,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:36,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:17:36,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:17:36,926 INFO L87 Difference]: Start difference. First operand 269 states and 268 transitions. Second operand has 6 states, 5 states have (on average 45.4) internal successors, (227), 6 states have internal predecessors, (227), 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) [2023-12-02 19:17:37,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:37,395 INFO L93 Difference]: Finished difference Result 268 states and 267 transitions. [2023-12-02 19:17:37,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:37,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 45.4) internal successors, (227), 6 states have internal predecessors, (227), 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 227 [2023-12-02 19:17:37,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:37,396 INFO L225 Difference]: With dead ends: 268 [2023-12-02 19:17:37,396 INFO L226 Difference]: Without dead ends: 268 [2023-12-02 19:17:37,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:17:37,397 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 396 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:37,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 293 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:37,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-12-02 19:17:37,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2023-12-02 19:17:37,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 257 states have (on average 1.038910505836576) internal successors, (267), 267 states have internal predecessors, (267), 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) [2023-12-02 19:17:37,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 267 transitions. [2023-12-02 19:17:37,399 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 267 transitions. Word has length 227 [2023-12-02 19:17:37,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:37,400 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 267 transitions. [2023-12-02 19:17:37,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 45.4) internal successors, (227), 6 states have internal predecessors, (227), 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) [2023-12-02 19:17:37,400 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 267 transitions. [2023-12-02 19:17:37,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-12-02 19:17:37,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:37,401 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:37,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-12-02 19:17:37,401 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr156REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:37,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:37,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2068400952, now seen corresponding path program 1 times [2023-12-02 19:17:37,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:37,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364092667] [2023-12-02 19:17:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:37,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:37,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:37,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:37,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364092667] [2023-12-02 19:17:37,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364092667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:37,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:37,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:37,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708331923] [2023-12-02 19:17:37,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:37,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:37,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:37,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:37,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:37,678 INFO L87 Difference]: Start difference. First operand 268 states and 267 transitions. Second operand has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 4 states have internal predecessors, (232), 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) [2023-12-02 19:17:37,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:37,917 INFO L93 Difference]: Finished difference Result 267 states and 266 transitions. [2023-12-02 19:17:37,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:37,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 4 states have internal predecessors, (232), 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 232 [2023-12-02 19:17:37,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:37,918 INFO L225 Difference]: With dead ends: 267 [2023-12-02 19:17:37,918 INFO L226 Difference]: Without dead ends: 267 [2023-12-02 19:17:37,919 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 [2023-12-02 19:17:37,919 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 71 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:37,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 249 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:37,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-12-02 19:17:37,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2023-12-02 19:17:37,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 257 states have (on average 1.0350194552529184) internal successors, (266), 266 states have internal predecessors, (266), 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) [2023-12-02 19:17:37,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 266 transitions. [2023-12-02 19:17:37,922 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 266 transitions. Word has length 232 [2023-12-02 19:17:37,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:37,923 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 266 transitions. [2023-12-02 19:17:37,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 4 states have internal predecessors, (232), 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) [2023-12-02 19:17:37,923 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 266 transitions. [2023-12-02 19:17:37,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-12-02 19:17:37,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:37,924 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:37,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-12-02 19:17:37,924 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr157REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:37,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:37,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2068400951, now seen corresponding path program 1 times [2023-12-02 19:17:37,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:37,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932064316] [2023-12-02 19:17:37,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:37,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:38,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:38,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932064316] [2023-12-02 19:17:38,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932064316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:38,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:38,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:17:38,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252199230] [2023-12-02 19:17:38,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:38,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:17:38,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:38,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:17:38,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:17:38,595 INFO L87 Difference]: Start difference. First operand 267 states and 266 transitions. Second operand has 6 states, 5 states have (on average 46.4) internal successors, (232), 6 states have internal predecessors, (232), 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) [2023-12-02 19:17:39,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:39,037 INFO L93 Difference]: Finished difference Result 266 states and 265 transitions. [2023-12-02 19:17:39,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:39,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 46.4) internal successors, (232), 6 states have internal predecessors, (232), 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 232 [2023-12-02 19:17:39,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:39,038 INFO L225 Difference]: With dead ends: 266 [2023-12-02 19:17:39,038 INFO L226 Difference]: Without dead ends: 266 [2023-12-02 19:17:39,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:17:39,039 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 342 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:39,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 296 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:39,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-12-02 19:17:39,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2023-12-02 19:17:39,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 257 states have (on average 1.0311284046692606) internal successors, (265), 265 states have internal predecessors, (265), 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) [2023-12-02 19:17:39,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 265 transitions. [2023-12-02 19:17:39,041 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 265 transitions. Word has length 232 [2023-12-02 19:17:39,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:39,041 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 265 transitions. [2023-12-02 19:17:39,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 46.4) internal successors, (232), 6 states have internal predecessors, (232), 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) [2023-12-02 19:17:39,041 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 265 transitions. [2023-12-02 19:17:39,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-12-02 19:17:39,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:39,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:39,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-12-02 19:17:39,042 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr158REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:39,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:39,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1486328945, now seen corresponding path program 1 times [2023-12-02 19:17:39,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:39,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673576712] [2023-12-02 19:17:39,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:39,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:39,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:39,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:39,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673576712] [2023-12-02 19:17:39,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673576712] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:39,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:39,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:39,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638518395] [2023-12-02 19:17:39,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:39,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:39,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:39,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:39,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:39,312 INFO L87 Difference]: Start difference. First operand 266 states and 265 transitions. Second operand has 4 states, 3 states have (on average 79.0) internal successors, (237), 4 states have internal predecessors, (237), 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) [2023-12-02 19:17:39,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:39,524 INFO L93 Difference]: Finished difference Result 265 states and 264 transitions. [2023-12-02 19:17:39,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:39,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 79.0) internal successors, (237), 4 states have internal predecessors, (237), 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 237 [2023-12-02 19:17:39,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:39,526 INFO L225 Difference]: With dead ends: 265 [2023-12-02 19:17:39,526 INFO L226 Difference]: Without dead ends: 265 [2023-12-02 19:17:39,526 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 [2023-12-02 19:17:39,526 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 57 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:39,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 251 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:39,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-12-02 19:17:39,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2023-12-02 19:17:39,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 257 states have (on average 1.027237354085603) internal successors, (264), 264 states have internal predecessors, (264), 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) [2023-12-02 19:17:39,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 264 transitions. [2023-12-02 19:17:39,529 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 264 transitions. Word has length 237 [2023-12-02 19:17:39,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:39,529 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 264 transitions. [2023-12-02 19:17:39,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 79.0) internal successors, (237), 4 states have internal predecessors, (237), 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) [2023-12-02 19:17:39,529 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 264 transitions. [2023-12-02 19:17:39,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-12-02 19:17:39,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:39,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:39,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2023-12-02 19:17:39,530 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr159REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:39,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:39,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1486328944, now seen corresponding path program 1 times [2023-12-02 19:17:39,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:39,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449777578] [2023-12-02 19:17:39,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:39,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:40,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:40,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:40,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449777578] [2023-12-02 19:17:40,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449777578] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:40,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:40,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:17:40,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591454772] [2023-12-02 19:17:40,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:40,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:17:40,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:40,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:17:40,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:17:40,214 INFO L87 Difference]: Start difference. First operand 265 states and 264 transitions. Second operand has 6 states, 5 states have (on average 47.4) internal successors, (237), 6 states have internal predecessors, (237), 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) [2023-12-02 19:17:40,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:40,686 INFO L93 Difference]: Finished difference Result 264 states and 263 transitions. [2023-12-02 19:17:40,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:40,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 47.4) internal successors, (237), 6 states have internal predecessors, (237), 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 237 [2023-12-02 19:17:40,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:40,688 INFO L225 Difference]: With dead ends: 264 [2023-12-02 19:17:40,688 INFO L226 Difference]: Without dead ends: 264 [2023-12-02 19:17:40,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:17:40,688 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 331 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:40,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 298 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:40,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-12-02 19:17:40,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2023-12-02 19:17:40,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 257 states have (on average 1.0233463035019454) internal successors, (263), 263 states have internal predecessors, (263), 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) [2023-12-02 19:17:40,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 263 transitions. [2023-12-02 19:17:40,691 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 263 transitions. Word has length 237 [2023-12-02 19:17:40,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:40,691 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 263 transitions. [2023-12-02 19:17:40,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 47.4) internal successors, (237), 6 states have internal predecessors, (237), 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) [2023-12-02 19:17:40,691 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 263 transitions. [2023-12-02 19:17:40,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-12-02 19:17:40,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:40,692 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:40,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2023-12-02 19:17:40,692 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr161REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:40,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:40,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1910793466, now seen corresponding path program 1 times [2023-12-02 19:17:40,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:40,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178960259] [2023-12-02 19:17:40,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:40,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:41,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:41,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:41,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178960259] [2023-12-02 19:17:41,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178960259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:41,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:41,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:17:41,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752349105] [2023-12-02 19:17:41,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:41,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:17:41,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:41,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:17:41,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:17:41,437 INFO L87 Difference]: Start difference. First operand 264 states and 263 transitions. Second operand has 6 states, 5 states have (on average 48.4) internal successors, (242), 6 states have internal predecessors, (242), 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) [2023-12-02 19:17:41,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:41,920 INFO L93 Difference]: Finished difference Result 263 states and 262 transitions. [2023-12-02 19:17:41,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:41,920 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 48.4) internal successors, (242), 6 states have internal predecessors, (242), 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 242 [2023-12-02 19:17:41,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:41,921 INFO L225 Difference]: With dead ends: 263 [2023-12-02 19:17:41,921 INFO L226 Difference]: Without dead ends: 263 [2023-12-02 19:17:41,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:17:41,922 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 323 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:41,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 300 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:41,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-12-02 19:17:41,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2023-12-02 19:17:41,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 257 states have (on average 1.0194552529182879) internal successors, (262), 262 states have internal predecessors, (262), 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) [2023-12-02 19:17:41,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 262 transitions. [2023-12-02 19:17:41,925 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 262 transitions. Word has length 242 [2023-12-02 19:17:41,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:41,926 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 262 transitions. [2023-12-02 19:17:41,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 48.4) internal successors, (242), 6 states have internal predecessors, (242), 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) [2023-12-02 19:17:41,926 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 262 transitions. [2023-12-02 19:17:41,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-12-02 19:17:41,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:41,927 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:41,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2023-12-02 19:17:41,927 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr160REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:41,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:41,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1910793465, now seen corresponding path program 1 times [2023-12-02 19:17:41,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:41,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463672063] [2023-12-02 19:17:41,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:41,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:42,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:42,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:42,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463672063] [2023-12-02 19:17:42,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463672063] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:42,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:42,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:42,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687866035] [2023-12-02 19:17:42,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:42,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:42,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:42,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:42,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:42,194 INFO L87 Difference]: Start difference. First operand 263 states and 262 transitions. Second operand has 4 states, 3 states have (on average 80.66666666666667) internal successors, (242), 4 states have internal predecessors, (242), 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) [2023-12-02 19:17:42,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:42,402 INFO L93 Difference]: Finished difference Result 262 states and 261 transitions. [2023-12-02 19:17:42,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:42,403 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 80.66666666666667) internal successors, (242), 4 states have internal predecessors, (242), 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 242 [2023-12-02 19:17:42,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:42,404 INFO L225 Difference]: With dead ends: 262 [2023-12-02 19:17:42,404 INFO L226 Difference]: Without dead ends: 262 [2023-12-02 19:17:42,404 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 [2023-12-02 19:17:42,404 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 41 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:42,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 253 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:42,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-02 19:17:42,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2023-12-02 19:17:42,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 257 states have (on average 1.0155642023346303) internal successors, (261), 261 states have internal predecessors, (261), 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) [2023-12-02 19:17:42,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 261 transitions. [2023-12-02 19:17:42,407 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 261 transitions. Word has length 242 [2023-12-02 19:17:42,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:42,407 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 261 transitions. [2023-12-02 19:17:42,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 80.66666666666667) internal successors, (242), 4 states have internal predecessors, (242), 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) [2023-12-02 19:17:42,407 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 261 transitions. [2023-12-02 19:17:42,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-02 19:17:42,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:42,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:42,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2023-12-02 19:17:42,408 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr162REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:42,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:42,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1730852448, now seen corresponding path program 1 times [2023-12-02 19:17:42,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:42,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861474198] [2023-12-02 19:17:42,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:42,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:42,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:42,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861474198] [2023-12-02 19:17:42,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861474198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:42,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:42,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:42,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784914454] [2023-12-02 19:17:42,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:42,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:42,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:42,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:42,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:42,696 INFO L87 Difference]: Start difference. First operand 262 states and 261 transitions. Second operand has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 4 states have internal predecessors, (247), 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) [2023-12-02 19:17:42,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:42,895 INFO L93 Difference]: Finished difference Result 261 states and 260 transitions. [2023-12-02 19:17:42,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:42,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 4 states have internal predecessors, (247), 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 247 [2023-12-02 19:17:42,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:42,896 INFO L225 Difference]: With dead ends: 261 [2023-12-02 19:17:42,896 INFO L226 Difference]: Without dead ends: 261 [2023-12-02 19:17:42,896 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 [2023-12-02 19:17:42,897 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 29 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:42,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 255 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:42,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-12-02 19:17:42,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2023-12-02 19:17:42,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 257 states have (on average 1.0116731517509727) internal successors, (260), 260 states have internal predecessors, (260), 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) [2023-12-02 19:17:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 260 transitions. [2023-12-02 19:17:42,899 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 260 transitions. Word has length 247 [2023-12-02 19:17:42,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:42,899 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 260 transitions. [2023-12-02 19:17:42,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 4 states have internal predecessors, (247), 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) [2023-12-02 19:17:42,900 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 260 transitions. [2023-12-02 19:17:42,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-02 19:17:42,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:42,900 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:42,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2023-12-02 19:17:42,901 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr163REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:42,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:42,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1730852447, now seen corresponding path program 1 times [2023-12-02 19:17:42,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:42,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074736023] [2023-12-02 19:17:42,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:42,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:43,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:43,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:43,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074736023] [2023-12-02 19:17:43,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074736023] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:43,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:43,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:17:43,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678112396] [2023-12-02 19:17:43,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:43,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:17:43,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:43,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:17:43,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:17:43,619 INFO L87 Difference]: Start difference. First operand 261 states and 260 transitions. Second operand has 6 states, 5 states have (on average 49.4) internal successors, (247), 6 states have internal predecessors, (247), 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) [2023-12-02 19:17:44,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:44,079 INFO L93 Difference]: Finished difference Result 260 states and 259 transitions. [2023-12-02 19:17:44,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:44,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 49.4) internal successors, (247), 6 states have internal predecessors, (247), 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 247 [2023-12-02 19:17:44,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:44,080 INFO L225 Difference]: With dead ends: 260 [2023-12-02 19:17:44,080 INFO L226 Difference]: Without dead ends: 260 [2023-12-02 19:17:44,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:17:44,081 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 309 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:44,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 302 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:44,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-02 19:17:44,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2023-12-02 19:17:44,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 257 states have (on average 1.0077821011673151) internal successors, (259), 259 states have internal predecessors, (259), 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) [2023-12-02 19:17:44,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 259 transitions. [2023-12-02 19:17:44,083 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 259 transitions. Word has length 247 [2023-12-02 19:17:44,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:44,084 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 259 transitions. [2023-12-02 19:17:44,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 49.4) internal successors, (247), 6 states have internal predecessors, (247), 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) [2023-12-02 19:17:44,084 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 259 transitions. [2023-12-02 19:17:44,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-02 19:17:44,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:44,085 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:44,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2023-12-02 19:17:44,085 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr164REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:44,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:44,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1992540458, now seen corresponding path program 1 times [2023-12-02 19:17:44,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:44,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200481903] [2023-12-02 19:17:44,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:44,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:44,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:44,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:44,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200481903] [2023-12-02 19:17:44,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200481903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:44,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:44,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:17:44,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287470462] [2023-12-02 19:17:44,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:44,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:17:44,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:44,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:17:44,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:17:44,363 INFO L87 Difference]: Start difference. First operand 260 states and 259 transitions. Second operand has 4 states, 3 states have (on average 84.0) internal successors, (252), 4 states have internal predecessors, (252), 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) [2023-12-02 19:17:44,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:44,564 INFO L93 Difference]: Finished difference Result 259 states and 258 transitions. [2023-12-02 19:17:44,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:17:44,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 84.0) internal successors, (252), 4 states have internal predecessors, (252), 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 252 [2023-12-02 19:17:44,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:44,566 INFO L225 Difference]: With dead ends: 259 [2023-12-02 19:17:44,566 INFO L226 Difference]: Without dead ends: 259 [2023-12-02 19:17:44,566 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 [2023-12-02 19:17:44,566 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 15 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:44,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 257 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:17:44,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-02 19:17:44,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2023-12-02 19:17:44,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 257 states have (on average 1.0038910505836576) internal successors, (258), 258 states have internal predecessors, (258), 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) [2023-12-02 19:17:44,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 258 transitions. [2023-12-02 19:17:44,569 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 258 transitions. Word has length 252 [2023-12-02 19:17:44,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:44,569 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 258 transitions. [2023-12-02 19:17:44,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 84.0) internal successors, (252), 4 states have internal predecessors, (252), 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) [2023-12-02 19:17:44,569 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 258 transitions. [2023-12-02 19:17:44,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-02 19:17:44,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:44,570 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:44,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2023-12-02 19:17:44,570 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr165REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:44,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:44,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1992540459, now seen corresponding path program 1 times [2023-12-02 19:17:44,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:44,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509156531] [2023-12-02 19:17:44,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:44,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:45,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:45,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:45,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509156531] [2023-12-02 19:17:45,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509156531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:45,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:45,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:17:45,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301741851] [2023-12-02 19:17:45,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:45,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:17:45,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:45,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:17:45,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:17:45,285 INFO L87 Difference]: Start difference. First operand 259 states and 258 transitions. Second operand has 6 states, 5 states have (on average 50.4) internal successors, (252), 6 states have internal predecessors, (252), 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) [2023-12-02 19:17:45,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:45,754 INFO L93 Difference]: Finished difference Result 258 states and 257 transitions. [2023-12-02 19:17:45,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:17:45,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 50.4) internal successors, (252), 6 states have internal predecessors, (252), 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 252 [2023-12-02 19:17:45,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:45,756 INFO L225 Difference]: With dead ends: 258 [2023-12-02 19:17:45,756 INFO L226 Difference]: Without dead ends: 258 [2023-12-02 19:17:45,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:17:45,756 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 298 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:45,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 304 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:17:45,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-12-02 19:17:45,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2023-12-02 19:17:45,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.0) internal successors, (257), 257 states have internal predecessors, (257), 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) [2023-12-02 19:17:45,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 257 transitions. [2023-12-02 19:17:45,759 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 257 transitions. Word has length 252 [2023-12-02 19:17:45,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:45,759 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 257 transitions. [2023-12-02 19:17:45,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 50.4) internal successors, (252), 6 states have internal predecessors, (252), 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) [2023-12-02 19:17:45,759 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 257 transitions. [2023-12-02 19:17:45,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-12-02 19:17:45,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:17:45,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:45,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2023-12-02 19:17:45,760 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr166ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-12-02 19:17:45,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:17:45,760 INFO L85 PathProgramCache]: Analyzing trace with hash 448529202, now seen corresponding path program 1 times [2023-12-02 19:17:45,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:17:45,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040259206] [2023-12-02 19:17:45,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:17:45,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:17:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:17:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:17:51,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:17:51,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040259206] [2023-12-02 19:17:51,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040259206] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:17:51,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:17:51,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2023-12-02 19:17:51,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584148371] [2023-12-02 19:17:51,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:17:51,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-02 19:17:51,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:17:51,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-02 19:17:51,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2545, Unknown=0, NotChecked=0, Total=2652 [2023-12-02 19:17:51,072 INFO L87 Difference]: Start difference. First operand 258 states and 257 transitions. Second operand has 52 states, 52 states have (on average 4.9423076923076925) internal successors, (257), 52 states have internal predecessors, (257), 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) [2023-12-02 19:17:55,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:17:55,098 INFO L93 Difference]: Finished difference Result 253 states and 252 transitions. [2023-12-02 19:17:55,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-02 19:17:55,098 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.9423076923076925) internal successors, (257), 52 states have internal predecessors, (257), 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 257 [2023-12-02 19:17:55,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:17:55,098 INFO L225 Difference]: With dead ends: 253 [2023-12-02 19:17:55,098 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 19:17:55,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=119, Invalid=2743, Unknown=0, NotChecked=0, Total=2862 [2023-12-02 19:17:55,099 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 14 mSDsluCounter, 3488 mSDsCounter, 0 mSdLazyCounter, 8301 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3567 SdHoareTripleChecker+Invalid, 8302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:17:55,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 3567 Invalid, 8302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8301 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-02 19:17:55,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 19:17:55,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 19:17:55,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:17:55,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 19:17:55,100 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 257 [2023-12-02 19:17:55,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:17:55,100 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 19:17:55,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.9423076923076925) internal successors, (257), 52 states have internal predecessors, (257), 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) [2023-12-02 19:17:55,100 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 19:17:55,100 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 19:17:55,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (167 of 168 remaining) [2023-12-02 19:17:55,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (166 of 168 remaining) [2023-12-02 19:17:55,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (165 of 168 remaining) [2023-12-02 19:17:55,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (164 of 168 remaining) [2023-12-02 19:17:55,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (163 of 168 remaining) [2023-12-02 19:17:55,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (162 of 168 remaining) [2023-12-02 19:17:55,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (161 of 168 remaining) [2023-12-02 19:17:55,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (160 of 168 remaining) [2023-12-02 19:17:55,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (159 of 168 remaining) [2023-12-02 19:17:55,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (158 of 168 remaining) [2023-12-02 19:17:55,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (157 of 168 remaining) [2023-12-02 19:17:55,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (156 of 168 remaining) [2023-12-02 19:17:55,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (155 of 168 remaining) [2023-12-02 19:17:55,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (154 of 168 remaining) [2023-12-02 19:17:55,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (153 of 168 remaining) [2023-12-02 19:17:55,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (152 of 168 remaining) [2023-12-02 19:17:55,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (151 of 168 remaining) [2023-12-02 19:17:55,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (150 of 168 remaining) [2023-12-02 19:17:55,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (149 of 168 remaining) [2023-12-02 19:17:55,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (148 of 168 remaining) [2023-12-02 19:17:55,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (147 of 168 remaining) [2023-12-02 19:17:55,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (146 of 168 remaining) [2023-12-02 19:17:55,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (145 of 168 remaining) [2023-12-02 19:17:55,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (144 of 168 remaining) [2023-12-02 19:17:55,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (143 of 168 remaining) [2023-12-02 19:17:55,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (142 of 168 remaining) [2023-12-02 19:17:55,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (141 of 168 remaining) [2023-12-02 19:17:55,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (140 of 168 remaining) [2023-12-02 19:17:55,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (139 of 168 remaining) [2023-12-02 19:17:55,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (138 of 168 remaining) [2023-12-02 19:17:55,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (137 of 168 remaining) [2023-12-02 19:17:55,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (136 of 168 remaining) [2023-12-02 19:17:55,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (135 of 168 remaining) [2023-12-02 19:17:55,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (134 of 168 remaining) [2023-12-02 19:17:55,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (133 of 168 remaining) [2023-12-02 19:17:55,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (132 of 168 remaining) [2023-12-02 19:17:55,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (131 of 168 remaining) [2023-12-02 19:17:55,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (130 of 168 remaining) [2023-12-02 19:17:55,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (129 of 168 remaining) [2023-12-02 19:17:55,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (128 of 168 remaining) [2023-12-02 19:17:55,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (127 of 168 remaining) [2023-12-02 19:17:55,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE (126 of 168 remaining) [2023-12-02 19:17:55,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (125 of 168 remaining) [2023-12-02 19:17:55,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE (124 of 168 remaining) [2023-12-02 19:17:55,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE (123 of 168 remaining) [2023-12-02 19:17:55,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE (122 of 168 remaining) [2023-12-02 19:17:55,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE (121 of 168 remaining) [2023-12-02 19:17:55,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE (120 of 168 remaining) [2023-12-02 19:17:55,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE (119 of 168 remaining) [2023-12-02 19:17:55,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE (118 of 168 remaining) [2023-12-02 19:17:55,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE (117 of 168 remaining) [2023-12-02 19:17:55,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE (116 of 168 remaining) [2023-12-02 19:17:55,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE (115 of 168 remaining) [2023-12-02 19:17:55,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 168 remaining) [2023-12-02 19:17:55,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 168 remaining) [2023-12-02 19:17:55,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 168 remaining) [2023-12-02 19:17:55,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr56REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 168 remaining) [2023-12-02 19:17:55,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr57REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 168 remaining) [2023-12-02 19:17:55,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr58REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 168 remaining) [2023-12-02 19:17:55,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr59REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 168 remaining) [2023-12-02 19:17:55,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 168 remaining) [2023-12-02 19:17:55,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 168 remaining) [2023-12-02 19:17:55,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr62REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 168 remaining) [2023-12-02 19:17:55,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr63REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 168 remaining) [2023-12-02 19:17:55,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr64REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 168 remaining) [2023-12-02 19:17:55,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr65REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 168 remaining) [2023-12-02 19:17:55,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 168 remaining) [2023-12-02 19:17:55,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 168 remaining) [2023-12-02 19:17:55,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr68REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 168 remaining) [2023-12-02 19:17:55,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr69REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 168 remaining) [2023-12-02 19:17:55,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 168 remaining) [2023-12-02 19:17:55,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 168 remaining) [2023-12-02 19:17:55,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 168 remaining) [2023-12-02 19:17:55,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 168 remaining) [2023-12-02 19:17:55,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr74REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 168 remaining) [2023-12-02 19:17:55,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr75REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 168 remaining) [2023-12-02 19:17:55,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 168 remaining) [2023-12-02 19:17:55,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 168 remaining) [2023-12-02 19:17:55,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 168 remaining) [2023-12-02 19:17:55,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 168 remaining) [2023-12-02 19:17:55,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 168 remaining) [2023-12-02 19:17:55,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 168 remaining) [2023-12-02 19:17:55,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 168 remaining) [2023-12-02 19:17:55,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 168 remaining) [2023-12-02 19:17:55,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 168 remaining) [2023-12-02 19:17:55,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 168 remaining) [2023-12-02 19:17:55,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 168 remaining) [2023-12-02 19:17:55,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 168 remaining) [2023-12-02 19:17:55,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 168 remaining) [2023-12-02 19:17:55,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 168 remaining) [2023-12-02 19:17:55,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 168 remaining) [2023-12-02 19:17:55,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 168 remaining) [2023-12-02 19:17:55,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 168 remaining) [2023-12-02 19:17:55,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 168 remaining) [2023-12-02 19:17:55,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr94REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 168 remaining) [2023-12-02 19:17:55,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr95REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 168 remaining) [2023-12-02 19:17:55,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr96REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 168 remaining) [2023-12-02 19:17:55,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr97REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 168 remaining) [2023-12-02 19:17:55,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr98REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 168 remaining) [2023-12-02 19:17:55,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr99REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 168 remaining) [2023-12-02 19:17:55,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr100REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 168 remaining) [2023-12-02 19:17:55,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr101REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 168 remaining) [2023-12-02 19:17:55,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr102REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 168 remaining) [2023-12-02 19:17:55,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr103REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 168 remaining) [2023-12-02 19:17:55,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 168 remaining) [2023-12-02 19:17:55,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr105REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 168 remaining) [2023-12-02 19:17:55,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr106REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 168 remaining) [2023-12-02 19:17:55,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 168 remaining) [2023-12-02 19:17:55,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 168 remaining) [2023-12-02 19:17:55,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr109REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 168 remaining) [2023-12-02 19:17:55,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr110REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 168 remaining) [2023-12-02 19:17:55,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr111REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 168 remaining) [2023-12-02 19:17:55,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr112REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 168 remaining) [2023-12-02 19:17:55,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr113REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 168 remaining) [2023-12-02 19:17:55,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr114REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 168 remaining) [2023-12-02 19:17:55,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr115REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 168 remaining) [2023-12-02 19:17:55,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr116REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 168 remaining) [2023-12-02 19:17:55,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 168 remaining) [2023-12-02 19:17:55,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr118REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 168 remaining) [2023-12-02 19:17:55,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr119REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 168 remaining) [2023-12-02 19:17:55,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr120REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 168 remaining) [2023-12-02 19:17:55,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr121REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 168 remaining) [2023-12-02 19:17:55,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr122REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 168 remaining) [2023-12-02 19:17:55,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr123REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 168 remaining) [2023-12-02 19:17:55,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr124REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 168 remaining) [2023-12-02 19:17:55,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr125REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 168 remaining) [2023-12-02 19:17:55,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr126REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 168 remaining) [2023-12-02 19:17:55,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr127REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 168 remaining) [2023-12-02 19:17:55,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr128REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 168 remaining) [2023-12-02 19:17:55,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr129REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 168 remaining) [2023-12-02 19:17:55,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr130REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 168 remaining) [2023-12-02 19:17:55,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr131REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 168 remaining) [2023-12-02 19:17:55,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr132REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 168 remaining) [2023-12-02 19:17:55,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr133REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 168 remaining) [2023-12-02 19:17:55,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr134REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 168 remaining) [2023-12-02 19:17:55,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr135REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 168 remaining) [2023-12-02 19:17:55,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr136REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 168 remaining) [2023-12-02 19:17:55,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr137REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 168 remaining) [2023-12-02 19:17:55,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr138REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 168 remaining) [2023-12-02 19:17:55,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr139REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 168 remaining) [2023-12-02 19:17:55,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr140REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 168 remaining) [2023-12-02 19:17:55,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr141REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 168 remaining) [2023-12-02 19:17:55,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr142REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 168 remaining) [2023-12-02 19:17:55,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr143REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 168 remaining) [2023-12-02 19:17:55,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr144REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 168 remaining) [2023-12-02 19:17:55,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr145REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 168 remaining) [2023-12-02 19:17:55,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr146REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 168 remaining) [2023-12-02 19:17:55,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr147REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 168 remaining) [2023-12-02 19:17:55,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr148REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 168 remaining) [2023-12-02 19:17:55,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr149REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 168 remaining) [2023-12-02 19:17:55,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr150REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 168 remaining) [2023-12-02 19:17:55,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr151REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 168 remaining) [2023-12-02 19:17:55,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr152REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 168 remaining) [2023-12-02 19:17:55,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr153REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 168 remaining) [2023-12-02 19:17:55,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr154REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 168 remaining) [2023-12-02 19:17:55,119 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr155REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 168 remaining) [2023-12-02 19:17:55,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr156REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 168 remaining) [2023-12-02 19:17:55,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr157REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 168 remaining) [2023-12-02 19:17:55,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr158REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 168 remaining) [2023-12-02 19:17:55,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr159REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 168 remaining) [2023-12-02 19:17:55,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr160REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 168 remaining) [2023-12-02 19:17:55,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr161REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 168 remaining) [2023-12-02 19:17:55,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr162REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 168 remaining) [2023-12-02 19:17:55,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr163REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 168 remaining) [2023-12-02 19:17:55,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr164REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 168 remaining) [2023-12-02 19:17:55,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr165REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 168 remaining) [2023-12-02 19:17:55,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr166ASSERT_VIOLATIONMEMORY_LEAK (1 of 168 remaining) [2023-12-02 19:17:55,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr167ASSERT_VIOLATIONMEMORY_LEAK (0 of 168 remaining) [2023-12-02 19:17:55,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2023-12-02 19:17:55,123 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:17:55,126 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 19:17:55,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:17:55 BoogieIcfgContainer [2023-12-02 19:17:55,129 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 19:17:55,130 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 19:17:55,130 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 19:17:55,130 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 19:17:55,130 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:16:36" (3/4) ... [2023-12-02 19:17:55,131 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 19:17:55,158 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 253 nodes and edges [2023-12-02 19:17:55,161 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-12-02 19:17:55,164 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-12-02 19:17:55,167 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-12-02 19:17:55,170 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-12-02 19:17:55,173 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 19:17:55,522 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5432dc-4b76-4e27-aa7a-88af190941eb/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 19:17:55,522 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5432dc-4b76-4e27-aa7a-88af190941eb/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 19:17:55,522 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 19:17:55,523 INFO L158 Benchmark]: Toolchain (without parser) took 81339.43ms. Allocated memory was 127.9MB in the beginning and 977.3MB in the end (delta: 849.3MB). Free memory was 86.2MB in the beginning and 823.5MB in the end (delta: -737.4MB). Peak memory consumption was 111.6MB. Max. memory is 16.1GB. [2023-12-02 19:17:55,523 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 127.9MB. Free memory is still 69.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:17:55,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 644.84ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 85.9MB in the beginning and 111.4MB in the end (delta: -25.6MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. [2023-12-02 19:17:55,524 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.07ms. Allocated memory is still 155.2MB. Free memory was 111.4MB in the beginning and 102.7MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-12-02 19:17:55,524 INFO L158 Benchmark]: Boogie Preprocessor took 107.93ms. Allocated memory is still 155.2MB. Free memory was 102.7MB in the beginning and 90.4MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 19:17:55,524 INFO L158 Benchmark]: RCFGBuilder took 1539.58ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 90.4MB in the beginning and 123.0MB in the end (delta: -32.6MB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB. [2023-12-02 19:17:55,524 INFO L158 Benchmark]: TraceAbstraction took 78559.42ms. Allocated memory was 186.6MB in the beginning and 977.3MB in the end (delta: 790.6MB). Free memory was 122.1MB in the beginning and 866.5MB in the end (delta: -744.4MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. [2023-12-02 19:17:55,525 INFO L158 Benchmark]: Witness Printer took 392.76ms. Allocated memory is still 977.3MB. Free memory was 866.5MB in the beginning and 823.5MB in the end (delta: 43.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2023-12-02 19:17:55,526 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 127.9MB. Free memory is still 69.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 644.84ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 85.9MB in the beginning and 111.4MB in the end (delta: -25.6MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.07ms. Allocated memory is still 155.2MB. Free memory was 111.4MB in the beginning and 102.7MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 107.93ms. Allocated memory is still 155.2MB. Free memory was 102.7MB in the beginning and 90.4MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 1539.58ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 90.4MB in the beginning and 123.0MB in the end (delta: -32.6MB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB. * TraceAbstraction took 78559.42ms. Allocated memory was 186.6MB in the beginning and 977.3MB in the end (delta: 790.6MB). Free memory was 122.1MB in the beginning and 866.5MB in the end (delta: -744.4MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. * Witness Printer took 392.76ms. Allocated memory is still 977.3MB. Free memory was 866.5MB in the beginning and 823.5MB in the end (delta: 43.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 4]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 130]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 427 locations, 168 error locations. Started 1 CEGAR loops. OverallTime: 78.5s, OverallIterations: 91, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 38.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41603 SdHoareTripleChecker+Valid, 34.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41603 mSDsluCounter, 27005 SdHoareTripleChecker+Invalid, 30.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12193 mSDsCounter, 1937 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39793 IncrementalHoareTripleChecker+Invalid, 41730 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1937 mSolverCounterUnsat, 14812 mSDtfsCounter, 39793 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 636 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 545 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=427occurred in iteration=0, InterpolantAutomatonStates: 575, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 91 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 3.6s SatisfiabilityAnalysisTime, 32.6s InterpolantComputationTime, 12966 NumberOfCodeBlocks, 12966 NumberOfCodeBlocksAsserted, 91 NumberOfCheckSat, 12875 ConstructedInterpolants, 0 QuantifiedInterpolants, 79681 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 91 InterpolantComputations, 91 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 168 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-02 19:17:55,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae5432dc-4b76-4e27-aa7a-88af190941eb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE