./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696132f8-b86e-4f88-89b4-1d3026b671fb/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696132f8-b86e-4f88-89b4-1d3026b671fb/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696132f8-b86e-4f88-89b4-1d3026b671fb/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696132f8-b86e-4f88-89b4-1d3026b671fb/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696132f8-b86e-4f88-89b4-1d3026b671fb/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696132f8-b86e-4f88-89b4-1d3026b671fb/bin/uautomizer-verify-uCwYo4JHxu --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e486f0f9d7d5faf0af2c33128bdcb8eeb95bb04afff03e23e86c60ceb8da8466 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:46:24,994 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:46:25,117 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696132f8-b86e-4f88-89b4-1d3026b671fb/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:46:25,124 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:46:25,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:46:25,165 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:46:25,167 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:46:25,167 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:46:25,169 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:46:25,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:46:25,174 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:46:25,175 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:46:25,176 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:46:25,177 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:46:25,178 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:46:25,178 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:46:25,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:46:25,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:46:25,180 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:46:25,180 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:46:25,181 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:46:25,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:46:25,182 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:46:25,183 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:46:25,183 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:46:25,183 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:46:25,184 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:46:25,185 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:46:25,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:46:25,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:25,187 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:46:25,188 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:46:25,188 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:46:25,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:46:25,189 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:46:25,189 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:46:25,189 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:46:25,190 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:46:25,190 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_696132f8-b86e-4f88-89b4-1d3026b671fb/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696132f8-b86e-4f88-89b4-1d3026b671fb/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e486f0f9d7d5faf0af2c33128bdcb8eeb95bb04afff03e23e86c60ceb8da8466 [2023-11-19 07:46:25,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:46:25,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:46:25,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:46:25,541 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:46:25,542 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:46:25,543 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696132f8-b86e-4f88-89b4-1d3026b671fb/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+nlh-reducer.c [2023-11-19 07:46:28,684 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:46:29,028 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:46:29,028 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696132f8-b86e-4f88-89b4-1d3026b671fb/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+nlh-reducer.c [2023-11-19 07:46:29,049 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696132f8-b86e-4f88-89b4-1d3026b671fb/bin/uautomizer-verify-uCwYo4JHxu/data/34f1639d3/3aa1f2e7af984875a69b17bcaf2a02a2/FLAG13088612e [2023-11-19 07:46:29,064 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696132f8-b86e-4f88-89b4-1d3026b671fb/bin/uautomizer-verify-uCwYo4JHxu/data/34f1639d3/3aa1f2e7af984875a69b17bcaf2a02a2 [2023-11-19 07:46:29,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:46:29,069 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:46:29,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:29,071 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:46:29,077 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:46:29,077 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:29" (1/1) ... [2023-11-19 07:46:29,079 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e548e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:29, skipping insertion in model container [2023-11-19 07:46:29,079 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:29" (1/1) ... [2023-11-19 07:46:29,159 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:46:29,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:29,675 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:46:29,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:29,892 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:46:29,904 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:46:29,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:29 WrapperNode [2023-11-19 07:46:29,905 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:29,907 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:29,907 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:46:29,907 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:46:29,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:29" (1/1) ... [2023-11-19 07:46:29,978 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:29" (1/1) ... [2023-11-19 07:46:30,083 INFO L138 Inliner]: procedures = 17, calls = 621, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2244 [2023-11-19 07:46:30,083 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:30,084 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:46:30,084 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:46:30,084 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:46:30,095 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:29" (1/1) ... [2023-11-19 07:46:30,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:29" (1/1) ... [2023-11-19 07:46:30,108 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:29" (1/1) ... [2023-11-19 07:46:30,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:29" (1/1) ... [2023-11-19 07:46:30,170 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:29" (1/1) ... [2023-11-19 07:46:30,193 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:29" (1/1) ... [2023-11-19 07:46:30,213 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:29" (1/1) ... [2023-11-19 07:46:30,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:29" (1/1) ... [2023-11-19 07:46:30,281 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:46:30,282 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:46:30,282 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:46:30,282 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:46:30,283 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:29" (1/1) ... [2023-11-19 07:46:30,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:30,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696132f8-b86e-4f88-89b4-1d3026b671fb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:30,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696132f8-b86e-4f88-89b4-1d3026b671fb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:30,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_696132f8-b86e-4f88-89b4-1d3026b671fb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:46:30,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:46:30,419 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-19 07:46:30,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:46:30,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:46:30,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:46:30,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:46:30,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:46:30,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:46:30,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:46:30,623 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:46:30,629 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:46:32,541 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:46:32,564 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:46:32,565 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:46:32,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:32 BoogieIcfgContainer [2023-11-19 07:46:32,575 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:46:32,578 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:46:32,578 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:46:32,581 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:46:32,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:46:29" (1/3) ... [2023-11-19 07:46:32,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6858a043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:32, skipping insertion in model container [2023-11-19 07:46:32,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:29" (2/3) ... [2023-11-19 07:46:32,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6858a043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:32, skipping insertion in model container [2023-11-19 07:46:32,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:32" (3/3) ... [2023-11-19 07:46:32,584 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+nlh-reducer.c [2023-11-19 07:46:32,604 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:46:32,605 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 168 error locations. [2023-11-19 07:46:32,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:46:32,696 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=PETRI_NET, 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;@62fd3911, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:46:32,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 168 error locations. [2023-11-19 07:46:32,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 471 states, 302 states have (on average 2.1258278145695364) internal successors, (642), 470 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:32,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 07:46:32,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:32,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 07:46:32,711 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr167ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:32,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:32,717 INFO L85 PathProgramCache]: Analyzing trace with hash 926756, now seen corresponding path program 1 times [2023-11-19 07:46:32,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:32,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625735606] [2023-11-19 07:46:32,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:32,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:33,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:33,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:33,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625735606] [2023-11-19 07:46:33,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625735606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:33,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:33,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:33,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85019912] [2023-11-19 07:46:33,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:33,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:33,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:33,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:33,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:33,238 INFO L87 Difference]: Start difference. First operand has 471 states, 302 states have (on average 2.1258278145695364) internal successors, (642), 470 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:34,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:34,144 INFO L93 Difference]: Finished difference Result 471 states and 598 transitions. [2023-11-19 07:46:34,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:34,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 07:46:34,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:34,176 INFO L225 Difference]: With dead ends: 471 [2023-11-19 07:46:34,177 INFO L226 Difference]: Without dead ends: 468 [2023-11-19 07:46:34,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:34,186 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 166 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:34,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 1021 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:46:34,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2023-11-19 07:46:34,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 468. [2023-11-19 07:46:34,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 300 states have (on average 1.98) internal successors, (594), 467 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:34,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 594 transitions. [2023-11-19 07:46:34,281 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 594 transitions. Word has length 4 [2023-11-19 07:46:34,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:34,281 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 594 transitions. [2023-11-19 07:46:34,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:34,282 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 594 transitions. [2023-11-19 07:46:34,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 07:46:34,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:34,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 07:46:34,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:46:34,284 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:34,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:34,285 INFO L85 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2023-11-19 07:46:34,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:34,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925702901] [2023-11-19 07:46:34,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:34,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:34,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:34,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:34,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925702901] [2023-11-19 07:46:34,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925702901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:34,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:34,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:34,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657335036] [2023-11-19 07:46:34,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:34,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:34,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:34,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:34,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:34,437 INFO L87 Difference]: Start difference. First operand 468 states and 594 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:35,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:35,071 INFO L93 Difference]: Finished difference Result 427 states and 553 transitions. [2023-11-19 07:46:35,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:35,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 07:46:35,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:35,074 INFO L225 Difference]: With dead ends: 427 [2023-11-19 07:46:35,074 INFO L226 Difference]: Without dead ends: 427 [2023-11-19 07:46:35,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:35,076 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 841 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:35,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 257 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:46:35,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2023-11-19 07:46:35,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2023-11-19 07:46:35,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 300 states have (on average 1.8433333333333333) internal successors, (553), 426 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:35,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 553 transitions. [2023-11-19 07:46:35,094 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 553 transitions. Word has length 4 [2023-11-19 07:46:35,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:35,095 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 553 transitions. [2023-11-19 07:46:35,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:35,095 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 553 transitions. [2023-11-19 07:46:35,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 07:46:35,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:35,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 07:46:35,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:46:35,097 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:35,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:35,099 INFO L85 PathProgramCache]: Analyzing trace with hash 925670, now seen corresponding path program 1 times [2023-11-19 07:46:35,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:35,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200822680] [2023-11-19 07:46:35,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:35,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:35,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:35,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200822680] [2023-11-19 07:46:35,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200822680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:35,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:35,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:35,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761657794] [2023-11-19 07:46:35,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:35,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:35,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:35,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:35,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:35,269 INFO L87 Difference]: Start difference. First operand 427 states and 553 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:35,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:35,793 INFO L93 Difference]: Finished difference Result 386 states and 512 transitions. [2023-11-19 07:46:35,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:46:35,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 07:46:35,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:35,796 INFO L225 Difference]: With dead ends: 386 [2023-11-19 07:46:35,796 INFO L226 Difference]: Without dead ends: 386 [2023-11-19 07:46:35,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:35,798 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 888 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:35,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 258 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:46:35,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-11-19 07:46:35,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2023-11-19 07:46:35,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 300 states have (on average 1.7066666666666668) internal successors, (512), 385 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:35,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 512 transitions. [2023-11-19 07:46:35,809 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 512 transitions. Word has length 4 [2023-11-19 07:46:35,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:35,809 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 512 transitions. [2023-11-19 07:46:35,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:35,810 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 512 transitions. [2023-11-19 07:46:35,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-19 07:46:35,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:35,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:35,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:46:35,814 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr167ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:35,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:35,815 INFO L85 PathProgramCache]: Analyzing trace with hash 619918579, now seen corresponding path program 1 times [2023-11-19 07:46:35,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:35,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226496270] [2023-11-19 07:46:35,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:35,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:36,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:36,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226496270] [2023-11-19 07:46:36,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226496270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:36,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:36,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:36,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631825331] [2023-11-19 07:46:36,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:36,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:36,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:36,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:36,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:36,187 INFO L87 Difference]: Start difference. First operand 386 states and 512 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:36,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:36,480 INFO L93 Difference]: Finished difference Result 388 states and 512 transitions. [2023-11-19 07:46:36,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:36,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-11-19 07:46:36,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:36,483 INFO L225 Difference]: With dead ends: 388 [2023-11-19 07:46:36,484 INFO L226 Difference]: Without dead ends: 388 [2023-11-19 07:46:36,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:36,485 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 91 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:36,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 760 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:46:36,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-11-19 07:46:36,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 386. [2023-11-19 07:46:36,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 300 states have (on average 1.7033333333333334) internal successors, (511), 385 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:36,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 511 transitions. [2023-11-19 07:46:36,496 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 511 transitions. Word has length 88 [2023-11-19 07:46:36,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:36,497 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 511 transitions. [2023-11-19 07:46:36,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:36,498 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 511 transitions. [2023-11-19 07:46:36,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-19 07:46:36,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:36,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:36,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:46:36,502 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr167ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:36,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:36,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2036638708, now seen corresponding path program 1 times [2023-11-19 07:46:36,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:36,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301335418] [2023-11-19 07:46:36,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:36,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:36,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:36,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:36,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301335418] [2023-11-19 07:46:36,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301335418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:36,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:36,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:36,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138363191] [2023-11-19 07:46:36,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:36,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:36,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:36,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:36,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:36,821 INFO L87 Difference]: Start difference. First operand 386 states and 511 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:36,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:36,844 INFO L93 Difference]: Finished difference Result 386 states and 510 transitions. [2023-11-19 07:46:36,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:36,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-11-19 07:46:36,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:36,848 INFO L225 Difference]: With dead ends: 386 [2023-11-19 07:46:36,848 INFO L226 Difference]: Without dead ends: 386 [2023-11-19 07:46:36,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:36,850 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 423 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:36,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 594 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:46:36,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-11-19 07:46:36,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2023-11-19 07:46:36,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 300 states have (on average 1.7) internal successors, (510), 385 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 510 transitions. [2023-11-19 07:46:36,861 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 510 transitions. Word has length 89 [2023-11-19 07:46:36,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:36,862 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 510 transitions. [2023-11-19 07:46:36,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:36,862 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 510 transitions. [2023-11-19 07:46:36,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-19 07:46:36,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:36,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:36,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:46:36,866 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:36,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:36,867 INFO L85 PathProgramCache]: Analyzing trace with hash 2036637796, now seen corresponding path program 1 times [2023-11-19 07:46:36,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:36,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661517217] [2023-11-19 07:46:36,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:36,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:37,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:37,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:37,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661517217] [2023-11-19 07:46:37,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661517217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:37,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:37,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:37,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619862846] [2023-11-19 07:46:37,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:37,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:37,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:37,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:37,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:37,229 INFO L87 Difference]: Start difference. First operand 386 states and 510 transitions. Second operand has 4 states, 3 states have (on average 29.666666666666668) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:37,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:37,830 INFO L93 Difference]: Finished difference Result 385 states and 509 transitions. [2023-11-19 07:46:37,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:37,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 29.666666666666668) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-11-19 07:46:37,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:37,834 INFO L225 Difference]: With dead ends: 385 [2023-11-19 07:46:37,834 INFO L226 Difference]: Without dead ends: 385 [2023-11-19 07:46:37,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:37,836 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 589 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:37,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 341 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:46:37,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-11-19 07:46:37,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2023-11-19 07:46:37,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 300 states have (on average 1.6966666666666668) internal successors, (509), 384 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:37,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 509 transitions. [2023-11-19 07:46:37,851 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 509 transitions. Word has length 89 [2023-11-19 07:46:37,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:37,853 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 509 transitions. [2023-11-19 07:46:37,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 29.666666666666668) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:37,858 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 509 transitions. [2023-11-19 07:46:37,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-19 07:46:37,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:37,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:37,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:46:37,863 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:37,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:37,864 INFO L85 PathProgramCache]: Analyzing trace with hash 2036637797, now seen corresponding path program 1 times [2023-11-19 07:46:37,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:37,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625335933] [2023-11-19 07:46:37,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:37,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:38,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:38,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625335933] [2023-11-19 07:46:38,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625335933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:38,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:38,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:46:38,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126714967] [2023-11-19 07:46:38,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:38,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:46:38,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:38,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:46:38,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:38,558 INFO L87 Difference]: Start difference. First operand 385 states and 509 transitions. Second operand has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:39,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:39,559 INFO L93 Difference]: Finished difference Result 384 states and 508 transitions. [2023-11-19 07:46:39,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:46:39,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-11-19 07:46:39,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:39,563 INFO L225 Difference]: With dead ends: 384 [2023-11-19 07:46:39,563 INFO L226 Difference]: Without dead ends: 384 [2023-11-19 07:46:39,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:46:39,565 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 882 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:39,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 426 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:46:39,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-11-19 07:46:39,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2023-11-19 07:46:39,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 300 states have (on average 1.6933333333333334) internal successors, (508), 383 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:39,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 508 transitions. [2023-11-19 07:46:39,580 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 508 transitions. Word has length 89 [2023-11-19 07:46:39,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:39,580 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 508 transitions. [2023-11-19 07:46:39,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:39,581 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 508 transitions. [2023-11-19 07:46:39,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-19 07:46:39,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:39,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:39,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:46:39,595 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr167ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:39,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:39,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1296129111, now seen corresponding path program 1 times [2023-11-19 07:46:39,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:39,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362378509] [2023-11-19 07:46:39,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:39,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:40,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:40,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:40,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362378509] [2023-11-19 07:46:40,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362378509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:40,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:40,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:46:40,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585345352] [2023-11-19 07:46:40,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:40,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:46:40,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:40,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:46:40,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:46:40,635 INFO L87 Difference]: Start difference. First operand 384 states and 508 transitions. Second operand has 9 states, 8 states have (on average 11.375) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:41,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:41,807 INFO L93 Difference]: Finished difference Result 383 states and 507 transitions. [2023-11-19 07:46:41,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:46:41,808 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-11-19 07:46:41,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:41,811 INFO L225 Difference]: With dead ends: 383 [2023-11-19 07:46:41,811 INFO L226 Difference]: Without dead ends: 382 [2023-11-19 07:46:41,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:46:41,813 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 588 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:41,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 977 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 07:46:41,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-11-19 07:46:41,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2023-11-19 07:46:41,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 299 states have (on average 1.274247491638796) internal successors, (381), 381 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 381 transitions. [2023-11-19 07:46:41,823 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 381 transitions. Word has length 91 [2023-11-19 07:46:41,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:41,823 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 381 transitions. [2023-11-19 07:46:41,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:41,824 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 381 transitions. [2023-11-19 07:46:41,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 07:46:41,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:41,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:41,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:46:41,826 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:41,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:41,827 INFO L85 PathProgramCache]: Analyzing trace with hash -2145244098, now seen corresponding path program 1 times [2023-11-19 07:46:41,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:41,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824082351] [2023-11-19 07:46:41,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:41,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:42,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:42,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:42,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824082351] [2023-11-19 07:46:42,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824082351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:42,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:42,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:46:42,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604494839] [2023-11-19 07:46:42,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:42,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:46:42,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:42,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:46:42,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:42,084 INFO L87 Difference]: Start difference. First operand 382 states and 381 transitions. Second operand has 5 states, 4 states have (on average 23.5) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:42,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:42,364 INFO L93 Difference]: Finished difference Result 381 states and 380 transitions. [2023-11-19 07:46:42,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:46:42,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.5) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-11-19 07:46:42,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:42,367 INFO L225 Difference]: With dead ends: 381 [2023-11-19 07:46:42,367 INFO L226 Difference]: Without dead ends: 381 [2023-11-19 07:46:42,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:46:42,368 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 870 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:42,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 426 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:46:42,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-11-19 07:46:42,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2023-11-19 07:46:42,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 299 states have (on average 1.2709030100334449) internal successors, (380), 380 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:42,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 380 transitions. [2023-11-19 07:46:42,383 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 380 transitions. Word has length 94 [2023-11-19 07:46:42,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:42,383 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 380 transitions. [2023-11-19 07:46:42,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.5) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:42,384 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 380 transitions. [2023-11-19 07:46:42,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 07:46:42,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:42,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:42,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:46:42,386 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:42,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:42,387 INFO L85 PathProgramCache]: Analyzing trace with hash -2145244097, now seen corresponding path program 1 times [2023-11-19 07:46:42,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:42,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954980507] [2023-11-19 07:46:42,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:42,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:42,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:42,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:42,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954980507] [2023-11-19 07:46:42,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954980507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:42,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:42,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:46:42,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910706921] [2023-11-19 07:46:42,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:42,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:46:42,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:42,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:46:42,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:42,927 INFO L87 Difference]: Start difference. First operand 381 states and 380 transitions. Second operand has 5 states, 4 states have (on average 23.5) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:43,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:43,486 INFO L93 Difference]: Finished difference Result 380 states and 379 transitions. [2023-11-19 07:46:43,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:46:43,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.5) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-11-19 07:46:43,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:43,489 INFO L225 Difference]: With dead ends: 380 [2023-11-19 07:46:43,489 INFO L226 Difference]: Without dead ends: 380 [2023-11-19 07:46:43,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:46:43,490 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 740 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:43,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 424 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:46:43,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-11-19 07:46:43,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2023-11-19 07:46:43,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 299 states have (on average 1.2675585284280937) internal successors, (379), 379 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:43,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 379 transitions. [2023-11-19 07:46:43,501 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 379 transitions. Word has length 94 [2023-11-19 07:46:43,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:43,501 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 379 transitions. [2023-11-19 07:46:43,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.5) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:43,502 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 379 transitions. [2023-11-19 07:46:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-19 07:46:43,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:43,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:43,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:46:43,504 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:43,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:43,504 INFO L85 PathProgramCache]: Analyzing trace with hash -837057419, now seen corresponding path program 1 times [2023-11-19 07:46:43,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:43,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270805331] [2023-11-19 07:46:43,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:43,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:43,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:43,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270805331] [2023-11-19 07:46:43,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270805331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:43,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:43,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:46:43,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752973057] [2023-11-19 07:46:43,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:43,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:46:43,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:43,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:46:43,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:43,861 INFO L87 Difference]: Start difference. First operand 380 states and 379 transitions. Second operand has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:44,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:44,153 INFO L93 Difference]: Finished difference Result 379 states and 378 transitions. [2023-11-19 07:46:44,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:46:44,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-11-19 07:46:44,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:44,156 INFO L225 Difference]: With dead ends: 379 [2023-11-19 07:46:44,157 INFO L226 Difference]: Without dead ends: 379 [2023-11-19 07:46:44,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:46:44,158 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 854 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:44,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 428 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:46:44,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-11-19 07:46:44,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2023-11-19 07:46:44,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 299 states have (on average 1.2642140468227425) internal successors, (378), 378 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:44,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 378 transitions. [2023-11-19 07:46:44,168 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 378 transitions. Word has length 99 [2023-11-19 07:46:44,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:44,168 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 378 transitions. [2023-11-19 07:46:44,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:44,169 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 378 transitions. [2023-11-19 07:46:44,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-19 07:46:44,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:44,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:44,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:46:44,171 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:44,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:44,171 INFO L85 PathProgramCache]: Analyzing trace with hash -837057418, now seen corresponding path program 1 times [2023-11-19 07:46:44,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:44,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037655065] [2023-11-19 07:46:44,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:44,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:44,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:44,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037655065] [2023-11-19 07:46:44,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037655065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:44,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:44,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:46:44,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661260780] [2023-11-19 07:46:44,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:44,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:46:44,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:44,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:46:44,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:46:44,881 INFO L87 Difference]: Start difference. First operand 379 states and 378 transitions. Second operand has 7 states, 6 states have (on average 16.5) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:45,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:45,560 INFO L93 Difference]: Finished difference Result 378 states and 377 transitions. [2023-11-19 07:46:45,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:46:45,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.5) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2023-11-19 07:46:45,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:45,563 INFO L225 Difference]: With dead ends: 378 [2023-11-19 07:46:45,563 INFO L226 Difference]: Without dead ends: 378 [2023-11-19 07:46:45,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:46:45,564 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 727 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:45,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 511 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:46:45,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-11-19 07:46:45,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2023-11-19 07:46:45,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 299 states have (on average 1.2608695652173914) internal successors, (377), 377 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:45,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 377 transitions. [2023-11-19 07:46:45,574 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 377 transitions. Word has length 99 [2023-11-19 07:46:45,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:45,574 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 377 transitions. [2023-11-19 07:46:45,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.5) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:45,575 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 377 transitions. [2023-11-19 07:46:45,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-19 07:46:45,576 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:45,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:45,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:46:45,576 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:45,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:45,577 INFO L85 PathProgramCache]: Analyzing trace with hash -586464657, now seen corresponding path program 1 times [2023-11-19 07:46:45,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:45,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561555085] [2023-11-19 07:46:45,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:45,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:45,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:45,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561555085] [2023-11-19 07:46:45,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561555085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:45,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:45,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:46:45,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141878213] [2023-11-19 07:46:45,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:45,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:46:45,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:45,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:46:45,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:45,881 INFO L87 Difference]: Start difference. First operand 378 states and 377 transitions. Second operand has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:46,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:46,184 INFO L93 Difference]: Finished difference Result 377 states and 376 transitions. [2023-11-19 07:46:46,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:46:46,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2023-11-19 07:46:46,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:46,187 INFO L225 Difference]: With dead ends: 377 [2023-11-19 07:46:46,187 INFO L226 Difference]: Without dead ends: 377 [2023-11-19 07:46:46,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:46:46,188 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 838 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:46,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 430 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:46:46,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-19 07:46:46,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2023-11-19 07:46:46,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 299 states have (on average 1.2575250836120402) internal successors, (376), 376 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:46,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 376 transitions. [2023-11-19 07:46:46,198 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 376 transitions. Word has length 104 [2023-11-19 07:46:46,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:46,198 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 376 transitions. [2023-11-19 07:46:46,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:46,198 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 376 transitions. [2023-11-19 07:46:46,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-19 07:46:46,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:46,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:46,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:46:46,200 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:46,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:46,201 INFO L85 PathProgramCache]: Analyzing trace with hash -586464656, now seen corresponding path program 1 times [2023-11-19 07:46:46,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:46,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159578479] [2023-11-19 07:46:46,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:46,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:46,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:46,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:46,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159578479] [2023-11-19 07:46:46,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159578479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:46,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:46,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:46:46,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142358198] [2023-11-19 07:46:46,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:46,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:46:46,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:46,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:46:46,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:46,923 INFO L87 Difference]: Start difference. First operand 377 states and 376 transitions. Second operand has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:47,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:47,560 INFO L93 Difference]: Finished difference Result 376 states and 375 transitions. [2023-11-19 07:46:47,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:46:47,561 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2023-11-19 07:46:47,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:47,563 INFO L225 Difference]: With dead ends: 376 [2023-11-19 07:46:47,564 INFO L226 Difference]: Without dead ends: 376 [2023-11-19 07:46:47,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:46:47,565 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 990 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:47,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 431 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:46:47,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2023-11-19 07:46:47,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2023-11-19 07:46:47,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 299 states have (on average 1.254180602006689) internal successors, (375), 375 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:47,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 375 transitions. [2023-11-19 07:46:47,575 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 375 transitions. Word has length 104 [2023-11-19 07:46:47,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:47,575 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 375 transitions. [2023-11-19 07:46:47,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:47,576 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 375 transitions. [2023-11-19 07:46:47,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-19 07:46:47,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:47,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:47,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:46:47,578 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:47,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:47,578 INFO L85 PathProgramCache]: Analyzing trace with hash -84099962, now seen corresponding path program 1 times [2023-11-19 07:46:47,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:47,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184361378] [2023-11-19 07:46:47,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:47,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:47,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:47,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:47,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184361378] [2023-11-19 07:46:47,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184361378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:47,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:47,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:46:47,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430007504] [2023-11-19 07:46:47,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:47,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:46:47,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:47,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:46:47,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:47,853 INFO L87 Difference]: Start difference. First operand 376 states and 375 transitions. Second operand has 5 states, 4 states have (on average 27.25) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:48,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:48,143 INFO L93 Difference]: Finished difference Result 375 states and 374 transitions. [2023-11-19 07:46:48,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:46:48,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 27.25) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-11-19 07:46:48,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:48,147 INFO L225 Difference]: With dead ends: 375 [2023-11-19 07:46:48,147 INFO L226 Difference]: Without dead ends: 375 [2023-11-19 07:46:48,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:46:48,148 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 822 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:48,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 432 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:46:48,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-11-19 07:46:48,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2023-11-19 07:46:48,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 299 states have (on average 1.2508361204013378) internal successors, (374), 374 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:48,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 374 transitions. [2023-11-19 07:46:48,160 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 374 transitions. Word has length 109 [2023-11-19 07:46:48,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:48,160 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 374 transitions. [2023-11-19 07:46:48,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 27.25) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:48,161 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 374 transitions. [2023-11-19 07:46:48,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-19 07:46:48,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:48,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:48,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:46:48,163 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:48,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:48,163 INFO L85 PathProgramCache]: Analyzing trace with hash -84099961, now seen corresponding path program 1 times [2023-11-19 07:46:48,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:48,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592316730] [2023-11-19 07:46:48,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:48,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:48,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:48,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:48,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592316730] [2023-11-19 07:46:48,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592316730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:48,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:48,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:46:48,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845621509] [2023-11-19 07:46:48,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:48,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:46:48,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:48,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:46:48,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:48,916 INFO L87 Difference]: Start difference. First operand 375 states and 374 transitions. Second operand has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:49,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:49,582 INFO L93 Difference]: Finished difference Result 374 states and 373 transitions. [2023-11-19 07:46:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:46:49,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-11-19 07:46:49,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:49,586 INFO L225 Difference]: With dead ends: 374 [2023-11-19 07:46:49,586 INFO L226 Difference]: Without dead ends: 374 [2023-11-19 07:46:49,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:46:49,587 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 705 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:49,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 474 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:46:49,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-11-19 07:46:49,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2023-11-19 07:46:49,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 299 states have (on average 1.2474916387959867) internal successors, (373), 373 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:49,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 373 transitions. [2023-11-19 07:46:49,597 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 373 transitions. Word has length 109 [2023-11-19 07:46:49,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:49,598 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 373 transitions. [2023-11-19 07:46:49,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:49,598 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 373 transitions. [2023-11-19 07:46:49,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-19 07:46:49,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:49,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:49,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:46:49,600 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:49,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:49,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1126073504, now seen corresponding path program 1 times [2023-11-19 07:46:49,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:49,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828049675] [2023-11-19 07:46:49,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:49,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:49,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:49,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:49,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828049675] [2023-11-19 07:46:49,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828049675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:49,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:49,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:46:49,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937504947] [2023-11-19 07:46:49,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:49,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:46:49,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:49,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:46:49,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:49,878 INFO L87 Difference]: Start difference. First operand 374 states and 373 transitions. Second operand has 5 states, 4 states have (on average 28.5) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:50,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:50,163 INFO L93 Difference]: Finished difference Result 373 states and 372 transitions. [2023-11-19 07:46:50,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:46:50,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 28.5) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2023-11-19 07:46:50,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:50,167 INFO L225 Difference]: With dead ends: 373 [2023-11-19 07:46:50,167 INFO L226 Difference]: Without dead ends: 373 [2023-11-19 07:46:50,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:46:50,168 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 806 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:50,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 434 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:46:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-19 07:46:50,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2023-11-19 07:46:50,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 299 states have (on average 1.2441471571906355) internal successors, (372), 372 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:50,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 372 transitions. [2023-11-19 07:46:50,177 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 372 transitions. Word has length 114 [2023-11-19 07:46:50,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:50,177 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 372 transitions. [2023-11-19 07:46:50,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 28.5) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:50,178 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 372 transitions. [2023-11-19 07:46:50,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-19 07:46:50,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:50,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:50,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:46:50,180 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:50,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:50,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1126073505, now seen corresponding path program 1 times [2023-11-19 07:46:50,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:50,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047592754] [2023-11-19 07:46:50,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:50,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:50,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:50,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047592754] [2023-11-19 07:46:50,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047592754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:50,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:50,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:46:50,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419540527] [2023-11-19 07:46:50,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:50,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:46:50,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:50,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:46:50,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:50,887 INFO L87 Difference]: Start difference. First operand 373 states and 372 transitions. Second operand has 6 states, 5 states have (on average 22.8) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:51,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:51,482 INFO L93 Difference]: Finished difference Result 372 states and 371 transitions. [2023-11-19 07:46:51,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:46:51,483 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.8) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2023-11-19 07:46:51,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:51,485 INFO L225 Difference]: With dead ends: 372 [2023-11-19 07:46:51,485 INFO L226 Difference]: Without dead ends: 372 [2023-11-19 07:46:51,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:46:51,486 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 694 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:51,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 476 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:46:51,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-11-19 07:46:51,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2023-11-19 07:46:51,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 299 states have (on average 1.2408026755852843) internal successors, (371), 371 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:51,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 371 transitions. [2023-11-19 07:46:51,495 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 371 transitions. Word has length 114 [2023-11-19 07:46:51,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:51,496 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 371 transitions. [2023-11-19 07:46:51,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.8) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:51,496 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 371 transitions. [2023-11-19 07:46:51,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-19 07:46:51,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:51,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:51,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 07:46:51,498 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr94REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:51,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:51,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1580157079, now seen corresponding path program 1 times [2023-11-19 07:46:51,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:51,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441992] [2023-11-19 07:46:51,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:51,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:51,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:51,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441992] [2023-11-19 07:46:51,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:51,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:51,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:46:51,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397356459] [2023-11-19 07:46:51,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:51,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:46:51,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:51,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:46:51,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:51,839 INFO L87 Difference]: Start difference. First operand 372 states and 371 transitions. Second operand has 5 states, 4 states have (on average 29.75) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:52,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:52,110 INFO L93 Difference]: Finished difference Result 371 states and 370 transitions. [2023-11-19 07:46:52,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:46:52,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 29.75) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-11-19 07:46:52,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:52,113 INFO L225 Difference]: With dead ends: 371 [2023-11-19 07:46:52,113 INFO L226 Difference]: Without dead ends: 371 [2023-11-19 07:46:52,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:46:52,114 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 790 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:52,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 436 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:46:52,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-19 07:46:52,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2023-11-19 07:46:52,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 299 states have (on average 1.2374581939799332) internal successors, (370), 370 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:52,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 370 transitions. [2023-11-19 07:46:52,140 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 370 transitions. Word has length 119 [2023-11-19 07:46:52,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:52,141 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 370 transitions. [2023-11-19 07:46:52,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 29.75) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:52,143 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 370 transitions. [2023-11-19 07:46:52,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-19 07:46:52,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:52,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:52,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 07:46:52,150 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:52,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:52,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1580157080, now seen corresponding path program 1 times [2023-11-19 07:46:52,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:52,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67331807] [2023-11-19 07:46:52,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:52,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:52,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:52,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67331807] [2023-11-19 07:46:52,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67331807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:52,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:52,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:46:52,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313876626] [2023-11-19 07:46:52,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:52,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:46:52,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:52,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:46:52,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:52,986 INFO L87 Difference]: Start difference. First operand 371 states and 370 transitions. Second operand has 6 states, 5 states have (on average 23.8) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:53,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:53,604 INFO L93 Difference]: Finished difference Result 370 states and 369 transitions. [2023-11-19 07:46:53,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:46:53,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.8) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-11-19 07:46:53,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:53,607 INFO L225 Difference]: With dead ends: 370 [2023-11-19 07:46:53,607 INFO L226 Difference]: Without dead ends: 370 [2023-11-19 07:46:53,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:46:53,608 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 936 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:53,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 437 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:46:53,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-11-19 07:46:53,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2023-11-19 07:46:53,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 299 states have (on average 1.234113712374582) internal successors, (369), 369 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:53,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 369 transitions. [2023-11-19 07:46:53,618 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 369 transitions. Word has length 119 [2023-11-19 07:46:53,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:53,618 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 369 transitions. [2023-11-19 07:46:53,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.8) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:53,619 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 369 transitions. [2023-11-19 07:46:53,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-19 07:46:53,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:53,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:53,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-19 07:46:53,620 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr97REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:53,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:53,621 INFO L85 PathProgramCache]: Analyzing trace with hash 345305810, now seen corresponding path program 1 times [2023-11-19 07:46:53,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:53,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907217285] [2023-11-19 07:46:53,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:53,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:54,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:54,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:54,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907217285] [2023-11-19 07:46:54,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907217285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:54,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:54,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:46:54,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849313681] [2023-11-19 07:46:54,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:54,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:46:54,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:54,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:46:54,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:54,435 INFO L87 Difference]: Start difference. First operand 370 states and 369 transitions. Second operand has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:55,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:55,111 INFO L93 Difference]: Finished difference Result 369 states and 368 transitions. [2023-11-19 07:46:55,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:46:55,112 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2023-11-19 07:46:55,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:55,114 INFO L225 Difference]: With dead ends: 369 [2023-11-19 07:46:55,114 INFO L226 Difference]: Without dead ends: 369 [2023-11-19 07:46:55,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:46:55,115 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 675 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:55,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 480 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:46:55,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-11-19 07:46:55,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2023-11-19 07:46:55,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 299 states have (on average 1.2307692307692308) internal successors, (368), 368 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:55,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 368 transitions. [2023-11-19 07:46:55,126 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 368 transitions. Word has length 124 [2023-11-19 07:46:55,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:55,127 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 368 transitions. [2023-11-19 07:46:55,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:55,128 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 368 transitions. [2023-11-19 07:46:55,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-19 07:46:55,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:55,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:55,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-19 07:46:55,130 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:55,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:55,130 INFO L85 PathProgramCache]: Analyzing trace with hash 345305809, now seen corresponding path program 1 times [2023-11-19 07:46:55,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:55,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753949356] [2023-11-19 07:46:55,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:55,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:55,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:55,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:55,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753949356] [2023-11-19 07:46:55,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753949356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:55,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:55,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:46:55,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868636032] [2023-11-19 07:46:55,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:55,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:46:55,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:55,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:46:55,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:55,413 INFO L87 Difference]: Start difference. First operand 369 states and 368 transitions. Second operand has 5 states, 4 states have (on average 31.0) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:55,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:55,703 INFO L93 Difference]: Finished difference Result 368 states and 367 transitions. [2023-11-19 07:46:55,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:46:55,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 31.0) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2023-11-19 07:46:55,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:55,706 INFO L225 Difference]: With dead ends: 368 [2023-11-19 07:46:55,706 INFO L226 Difference]: Without dead ends: 368 [2023-11-19 07:46:55,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:46:55,707 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 771 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:55,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 438 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:46:55,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2023-11-19 07:46:55,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2023-11-19 07:46:55,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 299 states have (on average 1.2274247491638797) internal successors, (367), 367 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:55,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 367 transitions. [2023-11-19 07:46:55,716 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 367 transitions. Word has length 124 [2023-11-19 07:46:55,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:55,717 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 367 transitions. [2023-11-19 07:46:55,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 31.0) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:55,717 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 367 transitions. [2023-11-19 07:46:55,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-19 07:46:55,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:55,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:55,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-19 07:46:55,719 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr98REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:55,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:55,720 INFO L85 PathProgramCache]: Analyzing trace with hash 286927016, now seen corresponding path program 1 times [2023-11-19 07:46:55,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:55,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987121583] [2023-11-19 07:46:55,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:55,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:56,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:56,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:56,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987121583] [2023-11-19 07:46:56,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987121583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:56,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:56,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:56,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42384163] [2023-11-19 07:46:56,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:56,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:56,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:56,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:56,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:56,004 INFO L87 Difference]: Start difference. First operand 368 states and 367 transitions. Second operand has 4 states, 3 states have (on average 43.0) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:56,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:56,280 INFO L93 Difference]: Finished difference Result 367 states and 366 transitions. [2023-11-19 07:46:56,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:56,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2023-11-19 07:46:56,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:56,283 INFO L225 Difference]: With dead ends: 367 [2023-11-19 07:46:56,283 INFO L226 Difference]: Without dead ends: 367 [2023-11-19 07:46:56,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:56,284 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 477 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:56,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 355 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:46:56,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2023-11-19 07:46:56,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2023-11-19 07:46:56,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 299 states have (on average 1.2240802675585285) internal successors, (366), 366 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:56,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 366 transitions. [2023-11-19 07:46:56,293 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 366 transitions. Word has length 129 [2023-11-19 07:46:56,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:56,293 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 366 transitions. [2023-11-19 07:46:56,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:56,294 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 366 transitions. [2023-11-19 07:46:56,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-19 07:46:56,295 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:56,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:56,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-19 07:46:56,296 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr99REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:56,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:56,296 INFO L85 PathProgramCache]: Analyzing trace with hash 286927017, now seen corresponding path program 1 times [2023-11-19 07:46:56,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:56,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520077884] [2023-11-19 07:46:56,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:56,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:56,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:56,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:56,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520077884] [2023-11-19 07:46:56,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520077884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:56,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:56,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:46:56,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470016943] [2023-11-19 07:46:56,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:56,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:46:56,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:56,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:46:56,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:46:56,976 INFO L87 Difference]: Start difference. First operand 367 states and 366 transitions. Second operand has 7 states, 6 states have (on average 21.5) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:57,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:57,613 INFO L93 Difference]: Finished difference Result 366 states and 365 transitions. [2023-11-19 07:46:57,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:46:57,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 21.5) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2023-11-19 07:46:57,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:57,617 INFO L225 Difference]: With dead ends: 366 [2023-11-19 07:46:57,617 INFO L226 Difference]: Without dead ends: 366 [2023-11-19 07:46:57,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:46:57,618 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 661 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:57,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 482 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:46:57,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2023-11-19 07:46:57,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2023-11-19 07:46:57,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 299 states have (on average 1.2207357859531773) internal successors, (365), 365 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:57,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 365 transitions. [2023-11-19 07:46:57,627 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 365 transitions. Word has length 129 [2023-11-19 07:46:57,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:57,628 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 365 transitions. [2023-11-19 07:46:57,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 21.5) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:57,628 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 365 transitions. [2023-11-19 07:46:57,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-19 07:46:57,630 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:57,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:57,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-19 07:46:57,630 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr100REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:57,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:57,631 INFO L85 PathProgramCache]: Analyzing trace with hash 6786306, now seen corresponding path program 1 times [2023-11-19 07:46:57,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:57,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602940800] [2023-11-19 07:46:57,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:57,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:57,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:57,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:57,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602940800] [2023-11-19 07:46:57,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602940800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:57,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:57,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:57,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361690138] [2023-11-19 07:46:57,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:57,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:57,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:57,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:57,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:57,932 INFO L87 Difference]: Start difference. First operand 366 states and 365 transitions. Second operand has 4 states, 3 states have (on average 44.666666666666664) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:58,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:58,212 INFO L93 Difference]: Finished difference Result 365 states and 364 transitions. [2023-11-19 07:46:58,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:58,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 44.666666666666664) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2023-11-19 07:46:58,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:58,215 INFO L225 Difference]: With dead ends: 365 [2023-11-19 07:46:58,215 INFO L226 Difference]: Without dead ends: 365 [2023-11-19 07:46:58,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:58,216 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 463 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:58,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 357 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:46:58,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-11-19 07:46:58,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2023-11-19 07:46:58,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 299 states have (on average 1.2173913043478262) internal successors, (364), 364 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:58,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 364 transitions. [2023-11-19 07:46:58,230 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 364 transitions. Word has length 134 [2023-11-19 07:46:58,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:58,231 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 364 transitions. [2023-11-19 07:46:58,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 44.666666666666664) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:58,232 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 364 transitions. [2023-11-19 07:46:58,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-19 07:46:58,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:58,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:58,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-19 07:46:58,234 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr101REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:58,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:58,234 INFO L85 PathProgramCache]: Analyzing trace with hash 6786307, now seen corresponding path program 1 times [2023-11-19 07:46:58,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:58,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926995395] [2023-11-19 07:46:58,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:58,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:58,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:58,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926995395] [2023-11-19 07:46:58,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926995395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:58,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:58,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:46:58,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747156327] [2023-11-19 07:46:58,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:58,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:46:58,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:58,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:46:58,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:58,964 INFO L87 Difference]: Start difference. First operand 365 states and 364 transitions. Second operand has 6 states, 5 states have (on average 26.8) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:59,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:59,599 INFO L93 Difference]: Finished difference Result 364 states and 363 transitions. [2023-11-19 07:46:59,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:46:59,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 26.8) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2023-11-19 07:46:59,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:59,603 INFO L225 Difference]: With dead ends: 364 [2023-11-19 07:46:59,603 INFO L226 Difference]: Without dead ends: 364 [2023-11-19 07:46:59,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:46:59,604 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 882 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:59,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 443 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:46:59,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-19 07:46:59,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2023-11-19 07:46:59,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 299 states have (on average 1.214046822742475) internal successors, (363), 363 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:59,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 363 transitions. [2023-11-19 07:46:59,615 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 363 transitions. Word has length 134 [2023-11-19 07:46:59,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:59,615 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 363 transitions. [2023-11-19 07:46:59,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 26.8) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:59,616 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 363 transitions. [2023-11-19 07:46:59,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-19 07:46:59,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:59,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:59,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-19 07:46:59,618 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr102REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:46:59,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:59,619 INFO L85 PathProgramCache]: Analyzing trace with hash -664511303, now seen corresponding path program 1 times [2023-11-19 07:46:59,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:59,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859636837] [2023-11-19 07:46:59,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:59,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:59,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:59,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:59,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859636837] [2023-11-19 07:46:59,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859636837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:59,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:59,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:59,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679771052] [2023-11-19 07:46:59,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:59,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:59,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:59,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:59,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:59,927 INFO L87 Difference]: Start difference. First operand 364 states and 363 transitions. Second operand has 4 states, 3 states have (on average 46.333333333333336) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:00,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:00,218 INFO L93 Difference]: Finished difference Result 363 states and 362 transitions. [2023-11-19 07:47:00,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:00,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 46.333333333333336) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2023-11-19 07:47:00,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:00,221 INFO L225 Difference]: With dead ends: 363 [2023-11-19 07:47:00,221 INFO L226 Difference]: Without dead ends: 363 [2023-11-19 07:47:00,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:00,222 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 449 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:00,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 359 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:47:00,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-11-19 07:47:00,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2023-11-19 07:47:00,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 299 states have (on average 1.2107023411371238) internal successors, (362), 362 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:00,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 362 transitions. [2023-11-19 07:47:00,235 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 362 transitions. Word has length 139 [2023-11-19 07:47:00,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:00,235 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 362 transitions. [2023-11-19 07:47:00,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 46.333333333333336) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:00,236 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 362 transitions. [2023-11-19 07:47:00,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-19 07:47:00,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:00,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:00,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-19 07:47:00,238 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr103REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:47:00,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:00,239 INFO L85 PathProgramCache]: Analyzing trace with hash -664511302, now seen corresponding path program 1 times [2023-11-19 07:47:00,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:00,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316811557] [2023-11-19 07:47:00,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:00,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:00,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:00,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:00,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316811557] [2023-11-19 07:47:00,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316811557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:00,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:00,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:47:00,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21723525] [2023-11-19 07:47:00,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:00,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:47:00,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:00,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:47:00,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:47:00,989 INFO L87 Difference]: Start difference. First operand 363 states and 362 transitions. Second operand has 7 states, 6 states have (on average 23.166666666666668) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:01,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:01,631 INFO L93 Difference]: Finished difference Result 362 states and 361 transitions. [2023-11-19 07:47:01,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:47:01,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 23.166666666666668) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2023-11-19 07:47:01,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:01,635 INFO L225 Difference]: With dead ends: 362 [2023-11-19 07:47:01,635 INFO L226 Difference]: Without dead ends: 362 [2023-11-19 07:47:01,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:47:01,636 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1132 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:01,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 445 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:47:01,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-11-19 07:47:01,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2023-11-19 07:47:01,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 299 states have (on average 1.2073578595317727) internal successors, (361), 361 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:01,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 361 transitions. [2023-11-19 07:47:01,651 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 361 transitions. Word has length 139 [2023-11-19 07:47:01,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:01,652 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 361 transitions. [2023-11-19 07:47:01,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 23.166666666666668) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:01,652 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 361 transitions. [2023-11-19 07:47:01,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-19 07:47:01,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:01,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:01,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-19 07:47:01,655 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:47:01,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:01,656 INFO L85 PathProgramCache]: Analyzing trace with hash 307188531, now seen corresponding path program 1 times [2023-11-19 07:47:01,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:01,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743513717] [2023-11-19 07:47:01,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:01,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:01,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:01,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743513717] [2023-11-19 07:47:01,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743513717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:01,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:01,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:01,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641156883] [2023-11-19 07:47:01,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:01,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:01,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:01,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:01,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:01,951 INFO L87 Difference]: Start difference. First operand 362 states and 361 transitions. Second operand has 4 states, 3 states have (on average 48.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:02,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:02,214 INFO L93 Difference]: Finished difference Result 361 states and 360 transitions. [2023-11-19 07:47:02,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:02,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 48.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2023-11-19 07:47:02,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:02,216 INFO L225 Difference]: With dead ends: 361 [2023-11-19 07:47:02,217 INFO L226 Difference]: Without dead ends: 361 [2023-11-19 07:47:02,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:02,217 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 435 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:02,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 361 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:47:02,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-11-19 07:47:02,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2023-11-19 07:47:02,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 299 states have (on average 1.2040133779264215) internal successors, (360), 360 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:02,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 360 transitions. [2023-11-19 07:47:02,230 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 360 transitions. Word has length 144 [2023-11-19 07:47:02,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:02,230 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 360 transitions. [2023-11-19 07:47:02,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 48.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:02,231 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 360 transitions. [2023-11-19 07:47:02,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-19 07:47:02,232 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:02,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:02,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-19 07:47:02,233 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr105REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:47:02,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:02,234 INFO L85 PathProgramCache]: Analyzing trace with hash 307188532, now seen corresponding path program 1 times [2023-11-19 07:47:02,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:02,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692925507] [2023-11-19 07:47:02,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:02,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:03,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:03,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692925507] [2023-11-19 07:47:03,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692925507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:03,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:03,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:47:03,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861574270] [2023-11-19 07:47:03,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:03,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:47:03,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:03,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:47:03,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:47:03,051 INFO L87 Difference]: Start difference. First operand 361 states and 360 transitions. Second operand has 7 states, 6 states have (on average 24.0) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:03,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:03,658 INFO L93 Difference]: Finished difference Result 360 states and 359 transitions. [2023-11-19 07:47:03,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:47:03,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 24.0) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2023-11-19 07:47:03,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:03,661 INFO L225 Difference]: With dead ends: 360 [2023-11-19 07:47:03,662 INFO L226 Difference]: Without dead ends: 360 [2023-11-19 07:47:03,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:47:03,663 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 894 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:03,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 488 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:47:03,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-11-19 07:47:03,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2023-11-19 07:47:03,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 299 states have (on average 1.2006688963210703) internal successors, (359), 359 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:03,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 359 transitions. [2023-11-19 07:47:03,671 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 359 transitions. Word has length 144 [2023-11-19 07:47:03,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:03,671 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 359 transitions. [2023-11-19 07:47:03,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 24.0) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:03,672 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 359 transitions. [2023-11-19 07:47:03,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-19 07:47:03,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:03,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:03,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-19 07:47:03,674 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr106REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:47:03,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:03,675 INFO L85 PathProgramCache]: Analyzing trace with hash 334816458, now seen corresponding path program 1 times [2023-11-19 07:47:03,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:03,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261640341] [2023-11-19 07:47:03,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:03,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:03,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:03,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:03,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261640341] [2023-11-19 07:47:03,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261640341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:03,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:03,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:03,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037634463] [2023-11-19 07:47:03,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:03,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:03,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:03,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:03,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:03,966 INFO L87 Difference]: Start difference. First operand 360 states and 359 transitions. Second operand has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:04,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:04,230 INFO L93 Difference]: Finished difference Result 359 states and 358 transitions. [2023-11-19 07:47:04,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:04,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2023-11-19 07:47:04,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:04,233 INFO L225 Difference]: With dead ends: 359 [2023-11-19 07:47:04,233 INFO L226 Difference]: Without dead ends: 359 [2023-11-19 07:47:04,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:04,233 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 421 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:04,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 363 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:47:04,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-11-19 07:47:04,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2023-11-19 07:47:04,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 299 states have (on average 1.1973244147157192) internal successors, (358), 358 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:04,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 358 transitions. [2023-11-19 07:47:04,242 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 358 transitions. Word has length 149 [2023-11-19 07:47:04,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:04,242 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 358 transitions. [2023-11-19 07:47:04,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:04,243 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 358 transitions. [2023-11-19 07:47:04,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-19 07:47:04,244 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:04,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:04,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-19 07:47:04,245 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:47:04,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:04,246 INFO L85 PathProgramCache]: Analyzing trace with hash 334816459, now seen corresponding path program 1 times [2023-11-19 07:47:04,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:04,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597948913] [2023-11-19 07:47:04,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:04,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:05,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:05,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:05,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597948913] [2023-11-19 07:47:05,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597948913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:05,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:05,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:47:05,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242938153] [2023-11-19 07:47:05,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:05,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:47:05,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:05,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:47:05,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:47:05,013 INFO L87 Difference]: Start difference. First operand 359 states and 358 transitions. Second operand has 6 states, 5 states have (on average 29.8) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:05,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:05,707 INFO L93 Difference]: Finished difference Result 358 states and 357 transitions. [2023-11-19 07:47:05,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:47:05,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 29.8) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2023-11-19 07:47:05,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:05,710 INFO L225 Difference]: With dead ends: 358 [2023-11-19 07:47:05,710 INFO L226 Difference]: Without dead ends: 358 [2023-11-19 07:47:05,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:47:05,711 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 617 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:05,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 490 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:47:05,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2023-11-19 07:47:05,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2023-11-19 07:47:05,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 299 states have (on average 1.193979933110368) internal successors, (357), 357 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:05,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 357 transitions. [2023-11-19 07:47:05,722 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 357 transitions. Word has length 149 [2023-11-19 07:47:05,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:05,723 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 357 transitions. [2023-11-19 07:47:05,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 29.8) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:05,723 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 357 transitions. [2023-11-19 07:47:05,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-19 07:47:05,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:05,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:05,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-19 07:47:05,726 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:47:05,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:05,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1027259036, now seen corresponding path program 1 times [2023-11-19 07:47:05,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:05,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554517560] [2023-11-19 07:47:05,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:05,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:06,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:06,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554517560] [2023-11-19 07:47:06,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554517560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:06,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:06,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:06,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245783026] [2023-11-19 07:47:06,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:06,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:06,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:06,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:06,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:06,119 INFO L87 Difference]: Start difference. First operand 358 states and 357 transitions. Second operand has 4 states, 3 states have (on average 51.333333333333336) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:06,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:06,409 INFO L93 Difference]: Finished difference Result 357 states and 356 transitions. [2023-11-19 07:47:06,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:06,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 51.333333333333336) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2023-11-19 07:47:06,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:06,415 INFO L225 Difference]: With dead ends: 357 [2023-11-19 07:47:06,416 INFO L226 Difference]: Without dead ends: 357 [2023-11-19 07:47:06,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:06,420 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 407 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:06,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 365 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:47:06,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-11-19 07:47:06,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2023-11-19 07:47:06,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 299 states have (on average 1.1906354515050168) internal successors, (356), 356 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:06,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 356 transitions. [2023-11-19 07:47:06,431 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 356 transitions. Word has length 154 [2023-11-19 07:47:06,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:06,432 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 356 transitions. [2023-11-19 07:47:06,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 51.333333333333336) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:06,433 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 356 transitions. [2023-11-19 07:47:06,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-19 07:47:06,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:06,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:06,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-19 07:47:06,435 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr109REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:47:06,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:06,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1027259035, now seen corresponding path program 1 times [2023-11-19 07:47:06,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:06,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544247047] [2023-11-19 07:47:06,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:06,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:07,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:07,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:07,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544247047] [2023-11-19 07:47:07,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544247047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:07,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:07,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:47:07,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78122224] [2023-11-19 07:47:07,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:07,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:47:07,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:07,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:47:07,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:47:07,254 INFO L87 Difference]: Start difference. First operand 357 states and 356 transitions. Second operand has 6 states, 5 states have (on average 30.8) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:07,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:07,877 INFO L93 Difference]: Finished difference Result 356 states and 355 transitions. [2023-11-19 07:47:07,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:47:07,878 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 30.8) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2023-11-19 07:47:07,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:07,880 INFO L225 Difference]: With dead ends: 356 [2023-11-19 07:47:07,880 INFO L226 Difference]: Without dead ends: 356 [2023-11-19 07:47:07,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:47:07,881 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 606 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:07,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 492 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:47:07,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-11-19 07:47:07,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2023-11-19 07:47:07,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 299 states have (on average 1.1872909698996656) internal successors, (355), 355 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:07,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 355 transitions. [2023-11-19 07:47:07,889 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 355 transitions. Word has length 154 [2023-11-19 07:47:07,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:07,890 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 355 transitions. [2023-11-19 07:47:07,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 30.8) internal successors, (154), 6 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:07,890 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 355 transitions. [2023-11-19 07:47:07,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-19 07:47:07,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:07,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:07,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-19 07:47:07,892 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr110REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:47:07,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:07,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1359822629, now seen corresponding path program 1 times [2023-11-19 07:47:07,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:07,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586379261] [2023-11-19 07:47:07,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:07,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:08,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:08,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586379261] [2023-11-19 07:47:08,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586379261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:08,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:08,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:08,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794665489] [2023-11-19 07:47:08,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:08,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:08,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:08,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:08,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:08,228 INFO L87 Difference]: Start difference. First operand 356 states and 355 transitions. Second operand has 4 states, 3 states have (on average 53.0) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:08,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:08,493 INFO L93 Difference]: Finished difference Result 355 states and 354 transitions. [2023-11-19 07:47:08,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:08,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 53.0) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2023-11-19 07:47:08,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:08,496 INFO L225 Difference]: With dead ends: 355 [2023-11-19 07:47:08,496 INFO L226 Difference]: Without dead ends: 355 [2023-11-19 07:47:08,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:08,497 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 393 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:08,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 367 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:47:08,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-11-19 07:47:08,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2023-11-19 07:47:08,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 299 states have (on average 1.1839464882943145) internal successors, (354), 354 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:08,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 354 transitions. [2023-11-19 07:47:08,504 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 354 transitions. Word has length 159 [2023-11-19 07:47:08,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:08,505 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 354 transitions. [2023-11-19 07:47:08,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 53.0) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:08,505 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 354 transitions. [2023-11-19 07:47:08,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-19 07:47:08,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:08,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:08,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-19 07:47:08,506 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr111REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 165 more)] === [2023-11-19 07:47:08,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:08,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1359822628, now seen corresponding path program 1 times [2023-11-19 07:47:08,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:08,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258229318] [2023-11-19 07:47:08,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:08,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat