./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe028_power.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d85a4d80-c47e-4e22-a427-519ee7ea253c/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d85a4d80-c47e-4e22-a427-519ee7ea253c/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d85a4d80-c47e-4e22-a427-519ee7ea253c/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d85a4d80-c47e-4e22-a427-519ee7ea253c/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe028_power.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d85a4d80-c47e-4e22-a427-519ee7ea253c/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d85a4d80-c47e-4e22-a427-519ee7ea253c/bin/utaipan-verify-NcY6lQBIFX --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 0d78821bc3a287b999f98be361d707254bd2fa61b63b525cf42d392168336d80 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:12:19,153 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:12:19,231 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d85a4d80-c47e-4e22-a427-519ee7ea253c/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 00:12:19,236 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:12:19,237 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:12:19,282 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:12:19,283 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:12:19,284 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:12:19,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:12:19,290 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:12:19,290 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:12:19,291 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:12:19,292 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:12:19,293 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:12:19,294 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:12:19,294 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:12:19,295 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:12:19,295 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:12:19,295 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:12:19,296 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:12:19,296 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:12:19,297 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:12:19,297 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:12:19,298 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:12:19,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:12:19,299 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:12:19,300 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:12:19,300 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:12:19,300 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:12:19,301 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:12:19,302 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:12:19,302 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:12:19,303 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:12:19,303 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:12:19,303 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:12:19,303 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:12:19,303 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:12:19,304 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:12:19,304 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:12:19,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:12:19,305 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:12:19,305 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:12:19,305 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:12:19,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:12:19,306 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:12:19,306 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:12:19,306 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_d85a4d80-c47e-4e22-a427-519ee7ea253c/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d85a4d80-c47e-4e22-a427-519ee7ea253c/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d78821bc3a287b999f98be361d707254bd2fa61b63b525cf42d392168336d80 [2023-11-12 00:12:19,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:12:19,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:12:19,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:12:19,591 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:12:19,592 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:12:19,593 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d85a4d80-c47e-4e22-a427-519ee7ea253c/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/pthread-wmm/safe028_power.i [2023-11-12 00:12:22,830 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:12:23,181 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:12:23,182 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d85a4d80-c47e-4e22-a427-519ee7ea253c/sv-benchmarks/c/pthread-wmm/safe028_power.i [2023-11-12 00:12:23,208 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d85a4d80-c47e-4e22-a427-519ee7ea253c/bin/utaipan-verify-NcY6lQBIFX/data/ed1b2a7e3/b0625a92c5ff418995a13a369879d81c/FLAGe698a88f0 [2023-11-12 00:12:23,222 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d85a4d80-c47e-4e22-a427-519ee7ea253c/bin/utaipan-verify-NcY6lQBIFX/data/ed1b2a7e3/b0625a92c5ff418995a13a369879d81c [2023-11-12 00:12:23,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:12:23,227 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:12:23,228 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:12:23,229 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:12:23,241 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:12:23,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:12:23" (1/1) ... [2023-11-12 00:12:23,245 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a9b0cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:23, skipping insertion in model container [2023-11-12 00:12:23,246 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:12:23" (1/1) ... [2023-11-12 00:12:23,326 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:12:23,872 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:12:23,887 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:12:24,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:12:24,079 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:12:24,079 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:12:24,088 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:12:24,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:24 WrapperNode [2023-11-12 00:12:24,089 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:12:24,090 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:12:24,091 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:12:24,091 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:12:24,100 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:24" (1/1) ... [2023-11-12 00:12:24,144 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:24" (1/1) ... [2023-11-12 00:12:24,205 INFO L138 Inliner]: procedures = 176, calls = 78, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 183 [2023-11-12 00:12:24,206 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:12:24,207 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:12:24,207 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:12:24,207 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:12:24,219 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:24" (1/1) ... [2023-11-12 00:12:24,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:24" (1/1) ... [2023-11-12 00:12:24,239 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:24" (1/1) ... [2023-11-12 00:12:24,243 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:24" (1/1) ... [2023-11-12 00:12:24,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:24" (1/1) ... [2023-11-12 00:12:24,276 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:24" (1/1) ... [2023-11-12 00:12:24,279 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:24" (1/1) ... [2023-11-12 00:12:24,289 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:24" (1/1) ... [2023-11-12 00:12:24,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:12:24,306 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:12:24,307 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:12:24,307 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:12:24,308 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:24" (1/1) ... [2023-11-12 00:12:24,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:12:24,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d85a4d80-c47e-4e22-a427-519ee7ea253c/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:12:24,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d85a4d80-c47e-4e22-a427-519ee7ea253c/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:12:24,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d85a4d80-c47e-4e22-a427-519ee7ea253c/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:12:24,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:12:24,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:12:24,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 00:12:24,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:12:24,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:12:24,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:12:24,451 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 00:12:24,452 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 00:12:24,453 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 00:12:24,453 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 00:12:24,453 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 00:12:24,453 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 00:12:24,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:12:24,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 00:12:24,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:12:24,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:12:24,457 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 00:12:24,659 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:12:24,662 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:12:25,400 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:12:26,208 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:12:26,208 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:12:26,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:12:26 BoogieIcfgContainer [2023-11-12 00:12:26,212 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:12:26,216 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:12:26,216 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:12:26,220 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:12:26,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:12:23" (1/3) ... [2023-11-12 00:12:26,223 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed021fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:12:26, skipping insertion in model container [2023-11-12 00:12:26,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:24" (2/3) ... [2023-11-12 00:12:26,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed021fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:12:26, skipping insertion in model container [2023-11-12 00:12:26,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:12:26" (3/3) ... [2023-11-12 00:12:26,231 INFO L112 eAbstractionObserver]: Analyzing ICFG safe028_power.i [2023-11-12 00:12:26,253 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:12:26,253 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 51 error locations. [2023-11-12 00:12:26,254 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:12:26,477 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 00:12:26,554 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:12:26,579 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 185 transitions, 382 flow [2023-11-12 00:12:26,584 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 185 transitions, 382 flow [2023-11-12 00:12:26,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 185 transitions, 382 flow [2023-11-12 00:12:26,752 INFO L124 PetriNetUnfolderBase]: 3/182 cut-off events. [2023-11-12 00:12:26,752 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 00:12:26,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 182 events. 3/182 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 295 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 125. Up to 2 conditions per place. [2023-11-12 00:12:26,769 INFO L119 LiptonReduction]: Number of co-enabled transitions 8072 [2023-11-12 00:12:55,440 INFO L134 LiptonReduction]: Checked pairs total: 35027 [2023-11-12 00:12:55,440 INFO L136 LiptonReduction]: Total number of compositions: 183 [2023-11-12 00:12:55,449 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 79 transitions, 170 flow [2023-11-12 00:12:58,146 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 54796 states, 39871 states have (on average 5.182388201951293) internal successors, (206627), 54795 states have internal predecessors, (206627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:12:58,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:12:58,172 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;@4622b82d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:12:58,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2023-11-12 00:12:58,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 54796 states, 39871 states have (on average 5.182388201951293) internal successors, (206627), 54795 states have internal predecessors, (206627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:12:58,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-12 00:12:58,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:12:58,263 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-12 00:12:58,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-12 00:12:58,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:12:58,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1259, now seen corresponding path program 1 times [2023-11-12 00:12:58,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:12:58,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18852586] [2023-11-12 00:12:58,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:58,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:12:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:12:58,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:12:58,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:12:58,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18852586] [2023-11-12 00:12:58,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18852586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:12:58,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:12:58,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 00:12:58,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522183760] [2023-11-12 00:12:58,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:12:58,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:12:58,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:12:58,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:12:58,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:12:58,514 INFO L87 Difference]: Start difference. First operand has 54796 states, 39871 states have (on average 5.182388201951293) internal successors, (206627), 54795 states have internal predecessors, (206627), 0 states have call successors, (0), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:12:58,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:12:59,005 INFO L93 Difference]: Finished difference Result 9084 states and 32205 transitions. [2023-11-12 00:12:59,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:12:59,008 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2023-11-12 00:12:59,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:12:59,152 INFO L225 Difference]: With dead ends: 9084 [2023-11-12 00:12:59,152 INFO L226 Difference]: Without dead ends: 9084 [2023-11-12 00:12:59,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:12:59,159 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:12:59,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:12:59,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9084 states. [2023-11-12 00:12:59,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9084 to 9084. [2023-11-12 00:12:59,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9084 states, 7951 states have (on average 4.050433907684568) internal successors, (32205), 9083 states have internal predecessors, (32205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:12:59,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9084 states to 9084 states and 32205 transitions. [2023-11-12 00:12:59,918 INFO L78 Accepts]: Start accepts. Automaton has 9084 states and 32205 transitions. Word has length 1 [2023-11-12 00:12:59,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:12:59,919 INFO L495 AbstractCegarLoop]: Abstraction has 9084 states and 32205 transitions. [2023-11-12 00:12:59,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:12:59,919 INFO L276 IsEmpty]: Start isEmpty. Operand 9084 states and 32205 transitions. [2023-11-12 00:12:59,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:12:59,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:12:59,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 00:12:59,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:12:59,920 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-12 00:12:59,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:12:59,921 INFO L85 PathProgramCache]: Analyzing trace with hash 38515170, now seen corresponding path program 1 times [2023-11-12 00:12:59,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:12:59,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271558720] [2023-11-12 00:12:59,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:12:59,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:12:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:00,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:00,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:00,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271558720] [2023-11-12 00:13:00,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271558720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:00,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:00,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:13:00,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439082139] [2023-11-12 00:13:00,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:00,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:00,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:00,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:00,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:00,246 INFO L87 Difference]: Start difference. First operand 9084 states and 32205 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:00,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:00,517 INFO L93 Difference]: Finished difference Result 6818 states and 22177 transitions. [2023-11-12 00:13:00,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:00,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-12 00:13:00,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:00,613 INFO L225 Difference]: With dead ends: 6818 [2023-11-12 00:13:00,613 INFO L226 Difference]: Without dead ends: 6818 [2023-11-12 00:13:00,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:00,617 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 28 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:00,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:13:00,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6818 states. [2023-11-12 00:13:01,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6818 to 6090. [2023-11-12 00:13:01,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6090 states, 5679 states have (on average 3.729705934143335) internal successors, (21181), 6089 states have internal predecessors, (21181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:01,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6090 states to 6090 states and 21181 transitions. [2023-11-12 00:13:01,174 INFO L78 Accepts]: Start accepts. Automaton has 6090 states and 21181 transitions. Word has length 4 [2023-11-12 00:13:01,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:01,176 INFO L495 AbstractCegarLoop]: Abstraction has 6090 states and 21181 transitions. [2023-11-12 00:13:01,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:01,176 INFO L276 IsEmpty]: Start isEmpty. Operand 6090 states and 21181 transitions. [2023-11-12 00:13:01,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:13:01,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:01,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 00:13:01,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:13:01,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-12 00:13:01,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:01,182 INFO L85 PathProgramCache]: Analyzing trace with hash 38515171, now seen corresponding path program 1 times [2023-11-12 00:13:01,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:01,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485193872] [2023-11-12 00:13:01,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:01,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:01,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:01,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:01,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485193872] [2023-11-12 00:13:01,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485193872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:01,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:01,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:13:01,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328191395] [2023-11-12 00:13:01,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:01,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:01,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:01,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:01,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:01,434 INFO L87 Difference]: Start difference. First operand 6090 states and 21181 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:01,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:01,572 INFO L93 Difference]: Finished difference Result 2502 states and 7903 transitions. [2023-11-12 00:13:01,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:01,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-12 00:13:01,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:01,590 INFO L225 Difference]: With dead ends: 2502 [2023-11-12 00:13:01,590 INFO L226 Difference]: Without dead ends: 2452 [2023-11-12 00:13:01,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:01,594 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:01,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:13:01,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states. [2023-11-12 00:13:01,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 2452. [2023-11-12 00:13:01,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2383 states have (on average 3.2459085186739403) internal successors, (7735), 2451 states have internal predecessors, (7735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:01,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 7735 transitions. [2023-11-12 00:13:01,843 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 7735 transitions. Word has length 4 [2023-11-12 00:13:01,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:01,843 INFO L495 AbstractCegarLoop]: Abstraction has 2452 states and 7735 transitions. [2023-11-12 00:13:01,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:01,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 7735 transitions. [2023-11-12 00:13:01,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:13:01,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:01,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:13:01,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 00:13:01,845 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-12 00:13:01,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:01,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1641628331, now seen corresponding path program 1 times [2023-11-12 00:13:01,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:01,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291089959] [2023-11-12 00:13:01,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:01,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:02,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:02,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:02,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291089959] [2023-11-12 00:13:02,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291089959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:02,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:02,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:13:02,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237941588] [2023-11-12 00:13:02,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:02,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:02,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:02,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:02,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:02,063 INFO L87 Difference]: Start difference. First operand 2452 states and 7735 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:02,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:02,241 INFO L93 Difference]: Finished difference Result 2076 states and 6397 transitions. [2023-11-12 00:13:02,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:02,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-12 00:13:02,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:02,253 INFO L225 Difference]: With dead ends: 2076 [2023-11-12 00:13:02,253 INFO L226 Difference]: Without dead ends: 2058 [2023-11-12 00:13:02,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:02,255 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 18 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:02,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:13:02,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2023-11-12 00:13:02,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 2058. [2023-11-12 00:13:02,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2058 states, 2008 states have (on average 3.1658366533864544) internal successors, (6357), 2057 states have internal predecessors, (6357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:02,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2058 states to 2058 states and 6357 transitions. [2023-11-12 00:13:02,336 INFO L78 Accepts]: Start accepts. Automaton has 2058 states and 6357 transitions. Word has length 6 [2023-11-12 00:13:02,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:02,337 INFO L495 AbstractCegarLoop]: Abstraction has 2058 states and 6357 transitions. [2023-11-12 00:13:02,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:02,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2058 states and 6357 transitions. [2023-11-12 00:13:02,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 00:13:02,339 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:02,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:02,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 00:13:02,340 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-12 00:13:02,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:02,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1957613889, now seen corresponding path program 1 times [2023-11-12 00:13:02,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:02,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747743717] [2023-11-12 00:13:02,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:02,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:02,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:02,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747743717] [2023-11-12 00:13:02,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747743717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:02,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:02,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:13:02,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559822222] [2023-11-12 00:13:02,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:02,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:02,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:02,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:02,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:02,475 INFO L87 Difference]: Start difference. First operand 2058 states and 6357 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:02,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:02,679 INFO L93 Difference]: Finished difference Result 2026 states and 6245 transitions. [2023-11-12 00:13:02,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:02,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-12 00:13:02,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:02,692 INFO L225 Difference]: With dead ends: 2026 [2023-11-12 00:13:02,693 INFO L226 Difference]: Without dead ends: 2026 [2023-11-12 00:13:02,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:02,694 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 17 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:02,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:13:02,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2023-11-12 00:13:02,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2026. [2023-11-12 00:13:02,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2026 states, 1976 states have (on average 3.160425101214575) internal successors, (6245), 2025 states have internal predecessors, (6245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:02,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 6245 transitions. [2023-11-12 00:13:02,789 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 6245 transitions. Word has length 10 [2023-11-12 00:13:02,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:02,791 INFO L495 AbstractCegarLoop]: Abstraction has 2026 states and 6245 transitions. [2023-11-12 00:13:02,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:02,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 6245 transitions. [2023-11-12 00:13:02,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:13:02,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:02,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:02,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:13:02,794 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-12 00:13:02,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:02,794 INFO L85 PathProgramCache]: Analyzing trace with hash -556555843, now seen corresponding path program 1 times [2023-11-12 00:13:02,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:02,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359784289] [2023-11-12 00:13:02,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:02,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:03,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:03,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:03,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359784289] [2023-11-12 00:13:03,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359784289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:03,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:03,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:13:03,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940764048] [2023-11-12 00:13:03,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:03,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:13:03,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:03,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:13:03,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:13:03,350 INFO L87 Difference]: Start difference. First operand 2026 states and 6245 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:03,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:03,563 INFO L93 Difference]: Finished difference Result 1962 states and 6037 transitions. [2023-11-12 00:13:03,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:13:03,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-12 00:13:03,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:03,574 INFO L225 Difference]: With dead ends: 1962 [2023-11-12 00:13:03,575 INFO L226 Difference]: Without dead ends: 1962 [2023-11-12 00:13:03,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:13:03,576 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:03,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 1 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:13:03,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2023-11-12 00:13:03,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1962. [2023-11-12 00:13:03,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1913 states have (on average 3.1557762676424463) internal successors, (6037), 1961 states have internal predecessors, (6037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:03,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 6037 transitions. [2023-11-12 00:13:03,649 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 6037 transitions. Word has length 11 [2023-11-12 00:13:03,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:03,650 INFO L495 AbstractCegarLoop]: Abstraction has 1962 states and 6037 transitions. [2023-11-12 00:13:03,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:03,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 6037 transitions. [2023-11-12 00:13:03,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:13:03,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:03,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:03,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 00:13:03,652 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-12 00:13:03,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:03,653 INFO L85 PathProgramCache]: Analyzing trace with hash -556555841, now seen corresponding path program 1 times [2023-11-12 00:13:03,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:03,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992373838] [2023-11-12 00:13:03,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:03,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:03,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:03,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:03,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992373838] [2023-11-12 00:13:03,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992373838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:03,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:03,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:13:03,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732231843] [2023-11-12 00:13:03,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:03,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:03,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:03,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:03,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:03,824 INFO L87 Difference]: Start difference. First operand 1962 states and 6037 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:03,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:03,967 INFO L93 Difference]: Finished difference Result 2226 states and 6669 transitions. [2023-11-12 00:13:03,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:03,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-12 00:13:03,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:03,979 INFO L225 Difference]: With dead ends: 2226 [2023-11-12 00:13:03,979 INFO L226 Difference]: Without dead ends: 2226 [2023-11-12 00:13:03,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:03,980 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 12 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:03,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:13:03,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2023-11-12 00:13:04,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 1898. [2023-11-12 00:13:04,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1898 states, 1850 states have (on average 3.150810810810811) internal successors, (5829), 1897 states have internal predecessors, (5829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:04,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 5829 transitions. [2023-11-12 00:13:04,054 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 5829 transitions. Word has length 11 [2023-11-12 00:13:04,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:04,054 INFO L495 AbstractCegarLoop]: Abstraction has 1898 states and 5829 transitions. [2023-11-12 00:13:04,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:04,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 5829 transitions. [2023-11-12 00:13:04,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:13:04,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:04,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:04,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 00:13:04,056 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-12 00:13:04,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:04,057 INFO L85 PathProgramCache]: Analyzing trace with hash -556487259, now seen corresponding path program 1 times [2023-11-12 00:13:04,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:04,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528963426] [2023-11-12 00:13:04,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:04,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:04,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:04,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:04,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528963426] [2023-11-12 00:13:04,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528963426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:04,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:04,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:13:04,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412135784] [2023-11-12 00:13:04,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:04,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:04,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:04,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:04,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:04,350 INFO L87 Difference]: Start difference. First operand 1898 states and 5829 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:04,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:04,469 INFO L93 Difference]: Finished difference Result 1882 states and 5773 transitions. [2023-11-12 00:13:04,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:04,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-12 00:13:04,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:04,479 INFO L225 Difference]: With dead ends: 1882 [2023-11-12 00:13:04,480 INFO L226 Difference]: Without dead ends: 1882 [2023-11-12 00:13:04,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:04,481 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 14 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:04,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:13:04,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2023-11-12 00:13:04,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1882. [2023-11-12 00:13:04,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1834 states have (on average 3.147764449291167) internal successors, (5773), 1881 states have internal predecessors, (5773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:04,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 5773 transitions. [2023-11-12 00:13:04,546 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 5773 transitions. Word has length 11 [2023-11-12 00:13:04,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:04,547 INFO L495 AbstractCegarLoop]: Abstraction has 1882 states and 5773 transitions. [2023-11-12 00:13:04,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:13:04,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 5773 transitions. [2023-11-12 00:13:04,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 00:13:04,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:04,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:13:04,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 00:13:04,550 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-12 00:13:04,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:04,550 INFO L85 PathProgramCache]: Analyzing trace with hash -73360793, now seen corresponding path program 1 times [2023-11-12 00:13:04,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:13:04,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725232432] [2023-11-12 00:13:04,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:04,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:13:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:06,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:13:06,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725232432] [2023-11-12 00:13:06,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725232432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:06,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:06,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:13:06,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286140386] [2023-11-12 00:13:06,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:06,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 00:13:06,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:13:06,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 00:13:06,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:13:06,778 INFO L87 Difference]: Start difference. First operand 1882 states and 5773 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)