./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_rmo.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_ceefe762-4829-4f1f-b65f-ebf344d4da37/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceefe762-4829-4f1f-b65f-ebf344d4da37/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_ceefe762-4829-4f1f-b65f-ebf344d4da37/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceefe762-4829-4f1f-b65f-ebf344d4da37/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_rmo.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceefe762-4829-4f1f-b65f-ebf344d4da37/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_ceefe762-4829-4f1f-b65f-ebf344d4da37/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 85e3ce8f111292d815206f012225ed7eff4e108dc07a389f6fa2d1590522afb0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:02:02,080 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:02:02,197 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceefe762-4829-4f1f-b65f-ebf344d4da37/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 01:02:02,202 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:02:02,209 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:02:02,248 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:02:02,249 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:02:02,250 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:02:02,251 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:02:02,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:02:02,256 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:02:02,257 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:02:02,257 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:02:02,259 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:02:02,259 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:02:02,260 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:02:02,260 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:02:02,261 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:02:02,261 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:02:02,262 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:02:02,262 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:02:02,263 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:02:02,264 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 01:02:02,264 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 01:02:02,265 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:02:02,266 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:02:02,266 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:02:02,266 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:02:02,284 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:02:02,284 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 01:02:02,285 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 01:02:02,286 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 01:02:02,286 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:02:02,287 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 01:02:02,287 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 01:02:02,287 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:02:02,288 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:02:02,288 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:02:02,289 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:02:02,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:02:02,289 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:02:02,290 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:02:02,291 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:02:02,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:02:02,292 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:02:02,292 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:02:02,292 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_ceefe762-4829-4f1f-b65f-ebf344d4da37/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceefe762-4829-4f1f-b65f-ebf344d4da37/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85e3ce8f111292d815206f012225ed7eff4e108dc07a389f6fa2d1590522afb0 [2023-11-12 01:02:02,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:02:02,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:02:02,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:02:02,661 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:02:02,663 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:02:02,664 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceefe762-4829-4f1f-b65f-ebf344d4da37/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/pthread-wmm/safe027_rmo.i [2023-11-12 01:02:05,840 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:02:06,151 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:02:06,152 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceefe762-4829-4f1f-b65f-ebf344d4da37/sv-benchmarks/c/pthread-wmm/safe027_rmo.i [2023-11-12 01:02:06,178 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceefe762-4829-4f1f-b65f-ebf344d4da37/bin/utaipan-verify-NcY6lQBIFX/data/a6d53c3a4/cc1a054ac42a4d5093d0d4372c3c7d5b/FLAG09e49d35c [2023-11-12 01:02:06,196 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceefe762-4829-4f1f-b65f-ebf344d4da37/bin/utaipan-verify-NcY6lQBIFX/data/a6d53c3a4/cc1a054ac42a4d5093d0d4372c3c7d5b [2023-11-12 01:02:06,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:02:06,203 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:02:06,206 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:02:06,207 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:02:06,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:02:06,213 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:02:06" (1/1) ... [2023-11-12 01:02:06,214 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38fbaf76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:06, skipping insertion in model container [2023-11-12 01:02:06,214 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:02:06" (1/1) ... [2023-11-12 01:02:06,280 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:02:06,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:02:06,718 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:02:06,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:02:06,877 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:06,878 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:02:06,886 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:02:06,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:06 WrapperNode [2023-11-12 01:02:06,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:02:06,889 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:02:06,889 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:02:06,889 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:02:06,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:06" (1/1) ... [2023-11-12 01:02:06,947 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:06" (1/1) ... [2023-11-12 01:02:07,001 INFO L138 Inliner]: procedures = 177, calls = 83, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 155 [2023-11-12 01:02:07,002 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:02:07,003 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:02:07,003 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:02:07,003 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:02:07,014 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:06" (1/1) ... [2023-11-12 01:02:07,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:06" (1/1) ... [2023-11-12 01:02:07,033 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:06" (1/1) ... [2023-11-12 01:02:07,036 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:06" (1/1) ... [2023-11-12 01:02:07,058 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:06" (1/1) ... [2023-11-12 01:02:07,074 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:06" (1/1) ... [2023-11-12 01:02:07,077 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:06" (1/1) ... [2023-11-12 01:02:07,079 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:06" (1/1) ... [2023-11-12 01:02:07,084 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:02:07,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:02:07,096 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:02:07,096 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:02:07,097 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:06" (1/1) ... [2023-11-12 01:02:07,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:02:07,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceefe762-4829-4f1f-b65f-ebf344d4da37/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:02:07,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceefe762-4829-4f1f-b65f-ebf344d4da37/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:02:07,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ceefe762-4829-4f1f-b65f-ebf344d4da37/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:02:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 01:02:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 01:02:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 01:02:07,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:02:07,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 01:02:07,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 01:02:07,192 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 01:02:07,192 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 01:02:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 01:02:07,193 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 01:02:07,193 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 01:02:07,193 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 01:02:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-12 01:02:07,194 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-12 01:02:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 01:02:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 01:02:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:02:07,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:02:07,199 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 01:02:07,379 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:02:07,382 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:02:08,068 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:02:08,496 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:02:08,496 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 01:02:08,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:02:08 BoogieIcfgContainer [2023-11-12 01:02:08,499 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:02:08,502 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:02:08,502 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:02:08,505 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:02:08,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:02:06" (1/3) ... [2023-11-12 01:02:08,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22cc2b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:02:08, skipping insertion in model container [2023-11-12 01:02:08,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:02:06" (2/3) ... [2023-11-12 01:02:08,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22cc2b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:02:08, skipping insertion in model container [2023-11-12 01:02:08,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:02:08" (3/3) ... [2023-11-12 01:02:08,508 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_rmo.i [2023-11-12 01:02:08,529 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:02:08,530 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2023-11-12 01:02:08,530 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 01:02:08,651 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 01:02:08,689 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 01:02:08,704 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 199 transitions, 414 flow [2023-11-12 01:02:08,707 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 199 transitions, 414 flow [2023-11-12 01:02:08,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 199 transitions, 414 flow [2023-11-12 01:02:08,814 INFO L124 PetriNetUnfolderBase]: 3/195 cut-off events. [2023-11-12 01:02:08,814 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 01:02:08,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 195 events. 3/195 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 285 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 135. Up to 2 conditions per place. [2023-11-12 01:02:08,831 INFO L119 LiptonReduction]: Number of co-enabled transitions 8662 [2023-11-12 01:02:30,213 INFO L134 LiptonReduction]: Checked pairs total: 26220 [2023-11-12 01:02:30,214 INFO L136 LiptonReduction]: Total number of compositions: 197 [2023-11-12 01:02:30,223 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 80 transitions, 176 flow [2023-11-12 01:02:35,571 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 127008 states, 115970 states have (on average 4.828904026903509) internal successors, (560008), 127007 states have internal predecessors, (560008), 0 states have call successors, (0), 0 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 01:02:35,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:02:35,608 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;@7a3cfc3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:02:35,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2023-11-12 01:02:35,759 INFO L276 IsEmpty]: Start isEmpty. Operand has 127008 states, 115970 states have (on average 4.828904026903509) internal successors, (560008), 127007 states have internal predecessors, (560008), 0 states have call successors, (0), 0 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 01:02:35,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-12 01:02:35,764 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:35,764 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-12 01:02:35,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-12 01:02:35,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:35,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1068, now seen corresponding path program 1 times [2023-11-12 01:02:35,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:35,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020325242] [2023-11-12 01:02:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:35,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:02:36,194 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 01:02:36,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:02:36,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020325242] [2023-11-12 01:02:36,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020325242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:02:36,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:02:36,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 01:02:36,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392551910] [2023-11-12 01:02:36,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:02:36,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 01:02:36,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:02:36,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 01:02:36,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 01:02:36,438 INFO L87 Difference]: Start difference. First operand has 127008 states, 115970 states have (on average 4.828904026903509) internal successors, (560008), 127007 states have internal predecessors, (560008), 0 states have call successors, (0), 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 01:02:37,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:02:37,435 INFO L93 Difference]: Finished difference Result 14186 states and 58394 transitions. [2023-11-12 01:02:37,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 01:02:37,437 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 01:02:37,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:02:37,691 INFO L225 Difference]: With dead ends: 14186 [2023-11-12 01:02:37,691 INFO L226 Difference]: Without dead ends: 14186 [2023-11-12 01:02:37,692 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 01:02:37,697 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:02:37,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:02:37,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14186 states. [2023-11-12 01:02:38,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14186 to 14186. [2023-11-12 01:02:38,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14186 states, 13782 states have (on average 4.236975765491221) internal successors, (58394), 14185 states have internal predecessors, (58394), 0 states have call successors, (0), 0 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 01:02:38,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14186 states to 14186 states and 58394 transitions. [2023-11-12 01:02:38,788 INFO L78 Accepts]: Start accepts. Automaton has 14186 states and 58394 transitions. Word has length 1 [2023-11-12 01:02:38,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:02:38,789 INFO L495 AbstractCegarLoop]: Abstraction has 14186 states and 58394 transitions. [2023-11-12 01:02:38,789 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 01:02:38,789 INFO L276 IsEmpty]: Start isEmpty. Operand 14186 states and 58394 transitions. [2023-11-12 01:02:38,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 01:02:38,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:38,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 01:02:38,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 01:02:38,791 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-12 01:02:38,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:38,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1052282, now seen corresponding path program 1 times [2023-11-12 01:02:38,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:38,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130989381] [2023-11-12 01:02:38,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:38,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:02:39,091 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 01:02:39,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:02:39,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130989381] [2023-11-12 01:02:39,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130989381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:02:39,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:02:39,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 01:02:39,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47430507] [2023-11-12 01:02:39,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:02:39,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:02:39,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:02:39,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:02:39,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:02:39,096 INFO L87 Difference]: Start difference. First operand 14186 states and 58394 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:39,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:02:39,510 INFO L93 Difference]: Finished difference Result 7946 states and 31748 transitions. [2023-11-12 01:02:39,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:02:39,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-12 01:02:39,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:02:39,607 INFO L225 Difference]: With dead ends: 7946 [2023-11-12 01:02:39,607 INFO L226 Difference]: Without dead ends: 7946 [2023-11-12 01:02:39,608 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 01:02:39,610 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 28 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:02:39,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:02:39,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7946 states. [2023-11-12 01:02:39,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7946 to 7946. [2023-11-12 01:02:39,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7946 states, 7817 states have (on average 4.061404630932583) internal successors, (31748), 7945 states have internal predecessors, (31748), 0 states have call successors, (0), 0 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 01:02:40,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7946 states to 7946 states and 31748 transitions. [2023-11-12 01:02:40,144 INFO L78 Accepts]: Start accepts. Automaton has 7946 states and 31748 transitions. Word has length 3 [2023-11-12 01:02:40,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:02:40,145 INFO L495 AbstractCegarLoop]: Abstraction has 7946 states and 31748 transitions. [2023-11-12 01:02:40,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:40,145 INFO L276 IsEmpty]: Start isEmpty. Operand 7946 states and 31748 transitions. [2023-11-12 01:02:40,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 01:02:40,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:40,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 01:02:40,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 01:02:40,150 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-12 01:02:40,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:40,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1052283, now seen corresponding path program 1 times [2023-11-12 01:02:40,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:40,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791561585] [2023-11-12 01:02:40,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:40,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:02:40,393 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 01:02:40,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:02:40,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791561585] [2023-11-12 01:02:40,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791561585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:02:40,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:02:40,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 01:02:40,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742994725] [2023-11-12 01:02:40,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:02:40,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:02:40,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:02:40,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:02:40,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:02:40,405 INFO L87 Difference]: Start difference. First operand 7946 states and 31748 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:40,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:02:40,601 INFO L93 Difference]: Finished difference Result 4127 states and 15962 transitions. [2023-11-12 01:02:40,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:02:40,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-12 01:02:40,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:02:40,646 INFO L225 Difference]: With dead ends: 4127 [2023-11-12 01:02:40,646 INFO L226 Difference]: Without dead ends: 4127 [2023-11-12 01:02:40,647 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 01:02:40,648 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:02:40,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:02:40,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4127 states. [2023-11-12 01:02:40,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4127 to 4127. [2023-11-12 01:02:40,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4127 states, 4093 states have (on average 3.8998289763010017) internal successors, (15962), 4126 states have internal predecessors, (15962), 0 states have call successors, (0), 0 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 01:02:40,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4127 states to 4127 states and 15962 transitions. [2023-11-12 01:02:40,900 INFO L78 Accepts]: Start accepts. Automaton has 4127 states and 15962 transitions. Word has length 3 [2023-11-12 01:02:40,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:02:40,900 INFO L495 AbstractCegarLoop]: Abstraction has 4127 states and 15962 transitions. [2023-11-12 01:02:40,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:40,901 INFO L276 IsEmpty]: Start isEmpty. Operand 4127 states and 15962 transitions. [2023-11-12 01:02:40,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 01:02:40,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:40,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:02:40,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 01:02:40,905 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-12 01:02:40,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:40,905 INFO L85 PathProgramCache]: Analyzing trace with hash 625450402, now seen corresponding path program 1 times [2023-11-12 01:02:40,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:40,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994525992] [2023-11-12 01:02:40,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:40,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:02:41,118 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 01:02:41,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:02:41,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994525992] [2023-11-12 01:02:41,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994525992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:02:41,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:02:41,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 01:02:41,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135281384] [2023-11-12 01:02:41,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:02:41,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:02:41,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:02:41,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:02:41,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:02:41,128 INFO L87 Difference]: Start difference. First operand 4127 states and 15962 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:41,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:02:41,330 INFO L93 Difference]: Finished difference Result 4031 states and 15562 transitions. [2023-11-12 01:02:41,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:02:41,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 01:02:41,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:02:41,361 INFO L225 Difference]: With dead ends: 4031 [2023-11-12 01:02:41,361 INFO L226 Difference]: Without dead ends: 4031 [2023-11-12 01:02:41,362 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 01:02:41,365 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 21 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:02:41,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 4 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:02:41,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4031 states. [2023-11-12 01:02:41,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4031 to 4031. [2023-11-12 01:02:41,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4031 states, 3997 states have (on average 3.8934200650487867) internal successors, (15562), 4030 states have internal predecessors, (15562), 0 states have call successors, (0), 0 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 01:02:41,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4031 states to 4031 states and 15562 transitions. [2023-11-12 01:02:41,601 INFO L78 Accepts]: Start accepts. Automaton has 4031 states and 15562 transitions. Word has length 13 [2023-11-12 01:02:41,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:02:41,602 INFO L495 AbstractCegarLoop]: Abstraction has 4031 states and 15562 transitions. [2023-11-12 01:02:41,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:41,603 INFO L276 IsEmpty]: Start isEmpty. Operand 4031 states and 15562 transitions. [2023-11-12 01:02:41,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 01:02:41,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:41,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:02:41,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 01:02:41,611 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-12 01:02:41,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:41,612 INFO L85 PathProgramCache]: Analyzing trace with hash -2115443835, now seen corresponding path program 1 times [2023-11-12 01:02:41,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:41,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147988436] [2023-11-12 01:02:41,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:41,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:02:41,931 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 01:02:41,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:02:41,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147988436] [2023-11-12 01:02:41,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147988436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:02:41,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:02:41,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:02:41,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100629396] [2023-11-12 01:02:41,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:02:41,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:02:41,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:02:41,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:02:41,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:02:41,934 INFO L87 Difference]: Start difference. First operand 4031 states and 15562 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:42,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:02:42,123 INFO L93 Difference]: Finished difference Result 3887 states and 15010 transitions. [2023-11-12 01:02:42,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:02:42,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-12 01:02:42,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:02:42,155 INFO L225 Difference]: With dead ends: 3887 [2023-11-12 01:02:42,156 INFO L226 Difference]: Without dead ends: 3887 [2023-11-12 01:02:42,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 01:02:42,157 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:02:42,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:02:42,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3887 states. [2023-11-12 01:02:42,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3887 to 3887. [2023-11-12 01:02:42,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3887 states, 3854 states have (on average 3.8946549039958485) internal successors, (15010), 3886 states have internal predecessors, (15010), 0 states have call successors, (0), 0 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 01:02:42,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3887 states to 3887 states and 15010 transitions. [2023-11-12 01:02:42,409 INFO L78 Accepts]: Start accepts. Automaton has 3887 states and 15010 transitions. Word has length 14 [2023-11-12 01:02:42,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:02:42,409 INFO L495 AbstractCegarLoop]: Abstraction has 3887 states and 15010 transitions. [2023-11-12 01:02:42,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:42,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3887 states and 15010 transitions. [2023-11-12 01:02:42,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 01:02:42,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:42,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:02:42,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 01:02:42,412 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-12 01:02:42,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:42,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2115443834, now seen corresponding path program 1 times [2023-11-12 01:02:42,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:42,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358450774] [2023-11-12 01:02:42,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:42,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:02:42,938 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 01:02:42,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:02:42,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358450774] [2023-11-12 01:02:42,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358450774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:02:42,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:02:42,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:02:42,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109650995] [2023-11-12 01:02:42,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:02:42,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 01:02:42,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:02:42,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 01:02:42,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:02:42,941 INFO L87 Difference]: Start difference. First operand 3887 states and 15010 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:43,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:02:43,140 INFO L93 Difference]: Finished difference Result 3743 states and 14458 transitions. [2023-11-12 01:02:43,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:02:43,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-12 01:02:43,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:02:43,164 INFO L225 Difference]: With dead ends: 3743 [2023-11-12 01:02:43,165 INFO L226 Difference]: Without dead ends: 3743 [2023-11-12 01:02:43,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:02:43,166 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 57 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:02:43,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 4 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:02:43,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2023-11-12 01:02:43,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 3743. [2023-11-12 01:02:43,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3743 states, 3711 states have (on average 3.895984909727836) internal successors, (14458), 3742 states have internal predecessors, (14458), 0 states have call successors, (0), 0 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 01:02:43,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3743 states to 3743 states and 14458 transitions. [2023-11-12 01:02:43,301 INFO L78 Accepts]: Start accepts. Automaton has 3743 states and 14458 transitions. Word has length 14 [2023-11-12 01:02:43,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:02:43,302 INFO L495 AbstractCegarLoop]: Abstraction has 3743 states and 14458 transitions. [2023-11-12 01:02:43,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:43,302 INFO L276 IsEmpty]: Start isEmpty. Operand 3743 states and 14458 transitions. [2023-11-12 01:02:43,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-12 01:02:43,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:43,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:02:43,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 01:02:43,304 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-12 01:02:43,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:43,305 INFO L85 PathProgramCache]: Analyzing trace with hash -2085873035, now seen corresponding path program 1 times [2023-11-12 01:02:43,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:43,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428587805] [2023-11-12 01:02:43,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:43,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:02:43,514 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 01:02:43,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:02:43,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428587805] [2023-11-12 01:02:43,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428587805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:02:43,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:02:43,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 01:02:43,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339368394] [2023-11-12 01:02:43,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:02:43,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:02:43,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:02:43,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:02:43,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:02:43,517 INFO L87 Difference]: Start difference. First operand 3743 states and 14458 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:43,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:02:43,650 INFO L93 Difference]: Finished difference Result 3695 states and 14258 transitions. [2023-11-12 01:02:43,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:02:43,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-12 01:02:43,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:02:43,742 INFO L225 Difference]: With dead ends: 3695 [2023-11-12 01:02:43,743 INFO L226 Difference]: Without dead ends: 3695 [2023-11-12 01:02:43,743 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 01:02:43,744 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:02:43,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 3 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:02:43,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3695 states. [2023-11-12 01:02:43,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3695 to 3695. [2023-11-12 01:02:43,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3695 states, 3663 states have (on average 3.8924378924378926) internal successors, (14258), 3694 states have internal predecessors, (14258), 0 states have call successors, (0), 0 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 01:02:43,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3695 states to 3695 states and 14258 transitions. [2023-11-12 01:02:43,871 INFO L78 Accepts]: Start accepts. Automaton has 3695 states and 14258 transitions. Word has length 14 [2023-11-12 01:02:43,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:02:43,871 INFO L495 AbstractCegarLoop]: Abstraction has 3695 states and 14258 transitions. [2023-11-12 01:02:43,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:43,872 INFO L276 IsEmpty]: Start isEmpty. Operand 3695 states and 14258 transitions. [2023-11-12 01:02:43,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 01:02:43,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:43,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:02:43,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 01:02:43,874 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-12 01:02:43,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:43,875 INFO L85 PathProgramCache]: Analyzing trace with hash -494701431, now seen corresponding path program 1 times [2023-11-12 01:02:43,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:43,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523978107] [2023-11-12 01:02:43,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:43,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:02:44,123 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 01:02:44,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:02:44,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523978107] [2023-11-12 01:02:44,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523978107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:02:44,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:02:44,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:02:44,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487213534] [2023-11-12 01:02:44,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:02:44,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:02:44,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:02:44,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:02:44,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:02:44,126 INFO L87 Difference]: Start difference. First operand 3695 states and 14258 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:44,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:02:44,342 INFO L93 Difference]: Finished difference Result 5479 states and 20758 transitions. [2023-11-12 01:02:44,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:02:44,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-12 01:02:44,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:02:44,372 INFO L225 Difference]: With dead ends: 5479 [2023-11-12 01:02:44,372 INFO L226 Difference]: Without dead ends: 5479 [2023-11-12 01:02:44,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:02:44,373 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 75 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:02:44,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 3 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:02:44,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5479 states. [2023-11-12 01:02:44,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5479 to 4007. [2023-11-12 01:02:44,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4007 states, 3975 states have (on average 3.8550943396226414) internal successors, (15324), 4006 states have internal predecessors, (15324), 0 states have call successors, (0), 0 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 01:02:44,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 15324 transitions. [2023-11-12 01:02:44,544 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 15324 transitions. Word has length 15 [2023-11-12 01:02:44,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:02:44,545 INFO L495 AbstractCegarLoop]: Abstraction has 4007 states and 15324 transitions. [2023-11-12 01:02:44,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:44,545 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 15324 transitions. [2023-11-12 01:02:44,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 01:02:44,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:44,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:02:44,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 01:02:44,548 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-12 01:02:44,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:44,548 INFO L85 PathProgramCache]: Analyzing trace with hash 709173622, now seen corresponding path program 1 times [2023-11-12 01:02:44,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:44,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411214995] [2023-11-12 01:02:44,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:44,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:02:44,913 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 01:02:44,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:02:44,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411214995] [2023-11-12 01:02:44,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411214995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:02:44,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:02:44,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 01:02:44,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200738751] [2023-11-12 01:02:44,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:02:44,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:02:44,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:02:44,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:02:44,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:02:44,917 INFO L87 Difference]: Start difference. First operand 4007 states and 15324 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:45,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:02:45,041 INFO L93 Difference]: Finished difference Result 3983 states and 15230 transitions. [2023-11-12 01:02:45,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:02:45,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-12 01:02:45,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:02:45,063 INFO L225 Difference]: With dead ends: 3983 [2023-11-12 01:02:45,064 INFO L226 Difference]: Without dead ends: 3983 [2023-11-12 01:02:45,064 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 01:02:45,065 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 16 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:02:45,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:02:45,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2023-11-12 01:02:45,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3983. [2023-11-12 01:02:45,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3983 states, 3951 states have (on average 3.8547203239686154) internal successors, (15230), 3982 states have internal predecessors, (15230), 0 states have call successors, (0), 0 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 01:02:45,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3983 states to 3983 states and 15230 transitions. [2023-11-12 01:02:45,243 INFO L78 Accepts]: Start accepts. Automaton has 3983 states and 15230 transitions. Word has length 16 [2023-11-12 01:02:45,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:02:45,248 INFO L495 AbstractCegarLoop]: Abstraction has 3983 states and 15230 transitions. [2023-11-12 01:02:45,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:45,248 INFO L276 IsEmpty]: Start isEmpty. Operand 3983 states and 15230 transitions. [2023-11-12 01:02:45,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 01:02:45,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:45,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:02:45,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 01:02:45,251 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-12 01:02:45,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:45,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1225748954, now seen corresponding path program 1 times [2023-11-12 01:02:45,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:45,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465717595] [2023-11-12 01:02:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:45,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:02:45,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:02:45,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:02:45,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465717595] [2023-11-12 01:02:45,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465717595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:02:45,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:02:45,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:02:45,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582691247] [2023-11-12 01:02:45,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:02:45,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:02:45,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:02:45,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:02:45,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:02:45,464 INFO L87 Difference]: Start difference. First operand 3983 states and 15230 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:45,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:02:45,586 INFO L93 Difference]: Finished difference Result 2817 states and 9530 transitions. [2023-11-12 01:02:45,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:02:45,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-12 01:02:45,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:02:45,597 INFO L225 Difference]: With dead ends: 2817 [2023-11-12 01:02:45,597 INFO L226 Difference]: Without dead ends: 2817 [2023-11-12 01:02:45,597 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 01:02:45,598 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:02:45,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:02:45,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2023-11-12 01:02:45,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2817. [2023-11-12 01:02:45,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2817 states, 2785 states have (on average 3.421903052064632) internal successors, (9530), 2816 states have internal predecessors, (9530), 0 states have call successors, (0), 0 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 01:02:45,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2817 states to 2817 states and 9530 transitions. [2023-11-12 01:02:45,687 INFO L78 Accepts]: Start accepts. Automaton has 2817 states and 9530 transitions. Word has length 16 [2023-11-12 01:02:45,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:02:45,688 INFO L495 AbstractCegarLoop]: Abstraction has 2817 states and 9530 transitions. [2023-11-12 01:02:45,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:45,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2817 states and 9530 transitions. [2023-11-12 01:02:45,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 01:02:45,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:45,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:02:45,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 01:02:45,692 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-12 01:02:45,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:45,692 INFO L85 PathProgramCache]: Analyzing trace with hash -340050526, now seen corresponding path program 1 times [2023-11-12 01:02:45,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:45,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663098680] [2023-11-12 01:02:45,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:45,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:02:45,968 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 01:02:45,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:02:45,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663098680] [2023-11-12 01:02:45,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663098680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:02:45,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:02:45,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:02:45,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260636277] [2023-11-12 01:02:45,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:02:45,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:02:45,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:02:45,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:02:45,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:02:45,970 INFO L87 Difference]: Start difference. First operand 2817 states and 9530 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:46,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:02:46,119 INFO L93 Difference]: Finished difference Result 1360 states and 3827 transitions. [2023-11-12 01:02:46,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:02:46,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-12 01:02:46,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:02:46,123 INFO L225 Difference]: With dead ends: 1360 [2023-11-12 01:02:46,123 INFO L226 Difference]: Without dead ends: 1360 [2023-11-12 01:02:46,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 01:02:46,124 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 20 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:02:46,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 6 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:02:46,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2023-11-12 01:02:46,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1360. [2023-11-12 01:02:46,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1334 states have (on average 2.868815592203898) internal successors, (3827), 1359 states have internal predecessors, (3827), 0 states have call successors, (0), 0 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 01:02:46,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 3827 transitions. [2023-11-12 01:02:46,163 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 3827 transitions. Word has length 18 [2023-11-12 01:02:46,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:02:46,163 INFO L495 AbstractCegarLoop]: Abstraction has 1360 states and 3827 transitions. [2023-11-12 01:02:46,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:02:46,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 3827 transitions. [2023-11-12 01:02:46,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-12 01:02:46,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:46,166 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] [2023-11-12 01:02:46,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 01:02:46,166 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-12 01:02:46,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:46,167 INFO L85 PathProgramCache]: Analyzing trace with hash -976520346, now seen corresponding path program 1 times [2023-11-12 01:02:46,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:46,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507588671] [2023-11-12 01:02:46,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:46,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:02:46,552 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 01:02:46,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:02:46,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507588671] [2023-11-12 01:02:46,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507588671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:02:46,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:02:46,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:02:46,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906159675] [2023-11-12 01:02:46,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:02:46,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 01:02:46,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:02:46,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 01:02:46,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:02:46,555 INFO L87 Difference]: Start difference. First operand 1360 states and 3827 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 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 01:02:46,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:02:46,720 INFO L93 Difference]: Finished difference Result 697 states and 1870 transitions. [2023-11-12 01:02:46,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 01:02:46,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-11-12 01:02:46,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:02:46,722 INFO L225 Difference]: With dead ends: 697 [2023-11-12 01:02:46,722 INFO L226 Difference]: Without dead ends: 697 [2023-11-12 01:02:46,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:02:46,723 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 45 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:02:46,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 7 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:02:46,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2023-11-12 01:02:46,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2023-11-12 01:02:46,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 685 states have (on average 2.72992700729927) internal successors, (1870), 696 states have internal predecessors, (1870), 0 states have call successors, (0), 0 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 01:02:46,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1870 transitions. [2023-11-12 01:02:46,793 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1870 transitions. Word has length 20 [2023-11-12 01:02:46,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:02:46,794 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 1870 transitions. [2023-11-12 01:02:46,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 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 01:02:46,794 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1870 transitions. [2023-11-12 01:02:46,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-12 01:02:46,797 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:02:46,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:02:46,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 01:02:46,797 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-11-12 01:02:46,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:02:46,798 INFO L85 PathProgramCache]: Analyzing trace with hash -880449250, now seen corresponding path program 1 times [2023-11-12 01:02:46,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:02:46,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248270405] [2023-11-12 01:02:46,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:02:46,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:02:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:02:49,793 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 01:02:49,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:02:49,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248270405] [2023-11-12 01:02:49,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248270405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:02:49,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:02:49,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 01:02:49,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312506640] [2023-11-12 01:02:49,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:02:49,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-12 01:02:49,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:02:49,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-12 01:02:49,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-12 01:02:49,798 INFO L87 Difference]: Start difference. First operand 697 states and 1870 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)