./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0513.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0513.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ --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 aaec9a71c2206d3d9fbfa56b3c6172e3ff60aad385f0ad346fdbde53f8ce1a2e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:42:48,653 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:42:48,744 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-23 21:42:48,748 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:42:48,749 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:42:48,771 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:42:48,771 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:42:48,772 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:42:48,773 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:42:48,773 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:42:48,774 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:42:48,775 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:42:48,775 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:42:48,776 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:42:48,777 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:42:48,777 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:42:48,778 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:42:48,778 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:42:48,779 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:42:48,779 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:42:48,780 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:42:48,781 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:42:48,781 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:42:48,782 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:42:48,782 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:42:48,783 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:42:48,783 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:42:48,784 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:42:48,784 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:42:48,785 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:42:48,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:42:48,786 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:42:48,786 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:42:48,787 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:42:48,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:42:48,788 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:42:48,788 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:42:48,788 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:42:48,789 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:42:48,789 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_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aaec9a71c2206d3d9fbfa56b3c6172e3ff60aad385f0ad346fdbde53f8ce1a2e [2023-11-23 21:42:49,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:42:49,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:42:49,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:42:49,092 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:42:49,092 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:42:49,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/memsafety/test-0513.i [2023-11-23 21:42:52,194 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:42:52,482 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:42:52,483 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/sv-benchmarks/c/memsafety/test-0513.i [2023-11-23 21:42:52,497 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/data/71636bf8a/0226fcc649a44cb58f723e21bcdfcac6/FLAGb78e7c531 [2023-11-23 21:42:52,512 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/data/71636bf8a/0226fcc649a44cb58f723e21bcdfcac6 [2023-11-23 21:42:52,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:42:52,517 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:42:52,519 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:42:52,519 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:42:52,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:42:52,526 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:42:52" (1/1) ... [2023-11-23 21:42:52,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73467aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:52, skipping insertion in model container [2023-11-23 21:42:52,527 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:42:52" (1/1) ... [2023-11-23 21:42:52,572 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:42:52,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:42:52,949 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:42:53,017 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:42:53,052 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:42:53,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:53 WrapperNode [2023-11-23 21:42:53,052 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:42:53,054 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:42:53,054 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:42:53,054 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:42:53,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:53" (1/1) ... [2023-11-23 21:42:53,075 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:53" (1/1) ... [2023-11-23 21:42:53,104 INFO L138 Inliner]: procedures = 123, calls = 37, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 126 [2023-11-23 21:42:53,104 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:42:53,105 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:42:53,105 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:42:53,106 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:42:53,116 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:53" (1/1) ... [2023-11-23 21:42:53,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:53" (1/1) ... [2023-11-23 21:42:53,121 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:53" (1/1) ... [2023-11-23 21:42:53,121 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:53" (1/1) ... [2023-11-23 21:42:53,134 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:53" (1/1) ... [2023-11-23 21:42:53,139 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:53" (1/1) ... [2023-11-23 21:42:53,141 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:53" (1/1) ... [2023-11-23 21:42:53,143 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:53" (1/1) ... [2023-11-23 21:42:53,146 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:42:53,147 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:42:53,148 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:42:53,148 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:42:53,149 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:53" (1/1) ... [2023-11-23 21:42:53,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:42:53,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:42:53,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:42:53,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:42:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:42:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:42:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:42:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:42:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:42:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:42:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:42:53,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:42:53,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:42:53,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:42:53,412 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:42:53,415 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:42:53,996 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:42:54,098 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:42:54,098 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-23 21:42:54,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:42:54 BoogieIcfgContainer [2023-11-23 21:42:54,099 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:42:54,102 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:42:54,102 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:42:54,106 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:42:54,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:42:52" (1/3) ... [2023-11-23 21:42:54,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1972f444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:42:54, skipping insertion in model container [2023-11-23 21:42:54,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:53" (2/3) ... [2023-11-23 21:42:54,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1972f444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:42:54, skipping insertion in model container [2023-11-23 21:42:54,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:42:54" (3/3) ... [2023-11-23 21:42:54,109 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0513.i [2023-11-23 21:42:54,130 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:42:54,131 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2023-11-23 21:42:54,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:42:54,200 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;@3dfe7a05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:42:54,200 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2023-11-23 21:42:54,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 50 states have (on average 2.52) internal successors, (126), 112 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:54,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:42:54,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:54,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:42:54,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:42:54,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:54,217 INFO L85 PathProgramCache]: Analyzing trace with hash 7469869, now seen corresponding path program 1 times [2023-11-23 21:42:54,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:54,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723891776] [2023-11-23 21:42:54,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:54,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:54,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:54,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723891776] [2023-11-23 21:42:54,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723891776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:54,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:54,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:42:54,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424604321] [2023-11-23 21:42:54,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:54,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:42:54,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:54,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:42:54,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:42:54,422 INFO L87 Difference]: Start difference. First operand has 113 states, 50 states have (on average 2.52) internal successors, (126), 112 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:54,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:54,503 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2023-11-23 21:42:54,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:42:54,506 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-23 21:42:54,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:54,517 INFO L225 Difference]: With dead ends: 113 [2023-11-23 21:42:54,517 INFO L226 Difference]: Without dead ends: 112 [2023-11-23 21:42:54,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:42:54,526 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:54,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:42:54,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-23 21:42:54,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-11-23 21:42:54,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 50 states have (on average 2.4) internal successors, (120), 111 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:54,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 120 transitions. [2023-11-23 21:42:54,583 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 120 transitions. Word has length 4 [2023-11-23 21:42:54,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:54,584 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 120 transitions. [2023-11-23 21:42:54,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:54,584 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 120 transitions. [2023-11-23 21:42:54,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:42:54,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:54,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:42:54,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:42:54,587 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:42:54,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:54,588 INFO L85 PathProgramCache]: Analyzing trace with hash 230176814, now seen corresponding path program 1 times [2023-11-23 21:42:54,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:54,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553146613] [2023-11-23 21:42:54,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:54,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:54,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:54,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:54,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553146613] [2023-11-23 21:42:54,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553146613] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:54,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:54,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:42:54,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214932306] [2023-11-23 21:42:54,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:54,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:54,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:54,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:54,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:54,678 INFO L87 Difference]: Start difference. First operand 112 states and 120 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:54,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:54,825 INFO L93 Difference]: Finished difference Result 153 states and 163 transitions. [2023-11-23 21:42:54,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:54,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-11-23 21:42:54,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:54,828 INFO L225 Difference]: With dead ends: 153 [2023-11-23 21:42:54,828 INFO L226 Difference]: Without dead ends: 152 [2023-11-23 21:42:54,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:54,830 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 37 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:54,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 145 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:42:54,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-11-23 21:42:54,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 115. [2023-11-23 21:42:54,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 53 states have (on average 2.339622641509434) internal successors, (124), 114 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) [2023-11-23 21:42:54,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 124 transitions. [2023-11-23 21:42:54,843 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 124 transitions. Word has length 5 [2023-11-23 21:42:54,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:54,843 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 124 transitions. [2023-11-23 21:42:54,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:54,844 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 124 transitions. [2023-11-23 21:42:54,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:42:54,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:54,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:42:54,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:42:54,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:42:54,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:54,846 INFO L85 PathProgramCache]: Analyzing trace with hash 230176738, now seen corresponding path program 1 times [2023-11-23 21:42:54,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:54,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966503448] [2023-11-23 21:42:54,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:54,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:54,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:54,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:54,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966503448] [2023-11-23 21:42:54,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966503448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:54,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:54,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:42:54,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026294004] [2023-11-23 21:42:54,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:54,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:54,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:54,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:54,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:54,934 INFO L87 Difference]: Start difference. First operand 115 states and 124 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:55,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:55,096 INFO L93 Difference]: Finished difference Result 125 states and 132 transitions. [2023-11-23 21:42:55,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:55,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-11-23 21:42:55,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:55,099 INFO L225 Difference]: With dead ends: 125 [2023-11-23 21:42:55,100 INFO L226 Difference]: Without dead ends: 124 [2023-11-23 21:42:55,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:55,102 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 12 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:55,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 166 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:42:55,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-23 21:42:55,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 118. [2023-11-23 21:42:55,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 56 states have (on average 2.3214285714285716) internal successors, (130), 117 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:55,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 130 transitions. [2023-11-23 21:42:55,112 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 130 transitions. Word has length 5 [2023-11-23 21:42:55,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:55,116 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 130 transitions. [2023-11-23 21:42:55,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:55,118 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 130 transitions. [2023-11-23 21:42:55,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:42:55,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:55,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:42:55,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:42:55,126 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:42:55,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:55,128 INFO L85 PathProgramCache]: Analyzing trace with hash 230177345, now seen corresponding path program 1 times [2023-11-23 21:42:55,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:55,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986857341] [2023-11-23 21:42:55,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:55,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:55,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:55,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:55,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986857341] [2023-11-23 21:42:55,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986857341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:55,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:55,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:42:55,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177999008] [2023-11-23 21:42:55,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:55,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:55,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:55,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:55,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:55,255 INFO L87 Difference]: Start difference. First operand 118 states and 130 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:55,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:55,431 INFO L93 Difference]: Finished difference Result 143 states and 157 transitions. [2023-11-23 21:42:55,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:55,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-11-23 21:42:55,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:55,435 INFO L225 Difference]: With dead ends: 143 [2023-11-23 21:42:55,435 INFO L226 Difference]: Without dead ends: 143 [2023-11-23 21:42:55,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:55,437 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 62 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:55,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 127 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:42:55,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-23 21:42:55,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 118. [2023-11-23 21:42:55,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 59 states have (on average 2.23728813559322) internal successors, (132), 117 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:55,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 132 transitions. [2023-11-23 21:42:55,448 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 132 transitions. Word has length 5 [2023-11-23 21:42:55,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:55,449 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 132 transitions. [2023-11-23 21:42:55,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:55,449 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 132 transitions. [2023-11-23 21:42:55,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:42:55,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:55,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:42:55,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:42:55,450 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:42:55,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:55,451 INFO L85 PathProgramCache]: Analyzing trace with hash 230177346, now seen corresponding path program 1 times [2023-11-23 21:42:55,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:55,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337809762] [2023-11-23 21:42:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:55,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:55,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:55,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:55,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337809762] [2023-11-23 21:42:55,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337809762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:55,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:55,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:42:55,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695406445] [2023-11-23 21:42:55,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:55,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:55,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:55,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:55,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:55,544 INFO L87 Difference]: Start difference. First operand 118 states and 132 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:55,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:55,653 INFO L93 Difference]: Finished difference Result 116 states and 128 transitions. [2023-11-23 21:42:55,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:55,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-11-23 21:42:55,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:55,655 INFO L225 Difference]: With dead ends: 116 [2023-11-23 21:42:55,655 INFO L226 Difference]: Without dead ends: 116 [2023-11-23 21:42:55,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:55,657 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 17 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:55,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 136 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:42:55,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-23 21:42:55,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-11-23 21:42:55,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 59 states have (on average 2.169491525423729) internal successors, (128), 115 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:55,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 128 transitions. [2023-11-23 21:42:55,666 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 128 transitions. Word has length 5 [2023-11-23 21:42:55,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:55,666 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 128 transitions. [2023-11-23 21:42:55,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:55,667 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 128 transitions. [2023-11-23 21:42:55,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:42:55,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:55,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:55,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:42:55,668 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:42:55,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:55,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1843712776, now seen corresponding path program 1 times [2023-11-23 21:42:55,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:55,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662033492] [2023-11-23 21:42:55,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:55,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:55,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:55,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662033492] [2023-11-23 21:42:55,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662033492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:55,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:55,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:42:55,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346247005] [2023-11-23 21:42:55,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:55,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:55,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:55,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:55,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:55,763 INFO L87 Difference]: Start difference. First operand 116 states and 128 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:55,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:55,872 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2023-11-23 21:42:55,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:55,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-23 21:42:55,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:55,875 INFO L225 Difference]: With dead ends: 112 [2023-11-23 21:42:55,875 INFO L226 Difference]: Without dead ends: 112 [2023-11-23 21:42:55,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:55,877 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 19 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:55,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 126 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:42:55,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-23 21:42:55,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-11-23 21:42:55,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 59 states have (on average 2.1016949152542375) internal successors, (124), 111 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) [2023-11-23 21:42:55,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2023-11-23 21:42:55,885 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 8 [2023-11-23 21:42:55,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:55,886 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2023-11-23 21:42:55,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:55,886 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2023-11-23 21:42:55,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:42:55,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:55,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:55,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:42:55,888 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:42:55,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:55,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1843712775, now seen corresponding path program 1 times [2023-11-23 21:42:55,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:55,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659568996] [2023-11-23 21:42:55,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:55,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:56,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:56,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:56,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659568996] [2023-11-23 21:42:56,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659568996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:56,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:56,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:42:56,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872492956] [2023-11-23 21:42:56,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:56,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:56,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:56,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:56,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:56,100 INFO L87 Difference]: Start difference. First operand 112 states and 124 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:56,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:56,199 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2023-11-23 21:42:56,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:56,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-23 21:42:56,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:56,200 INFO L225 Difference]: With dead ends: 109 [2023-11-23 21:42:56,201 INFO L226 Difference]: Without dead ends: 109 [2023-11-23 21:42:56,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:56,202 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 9 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:56,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 135 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:42:56,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-23 21:42:56,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2023-11-23 21:42:56,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 59 states have (on average 2.0508474576271185) internal successors, (121), 108 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:56,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 121 transitions. [2023-11-23 21:42:56,208 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 121 transitions. Word has length 8 [2023-11-23 21:42:56,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:56,209 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 121 transitions. [2023-11-23 21:42:56,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:56,209 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 121 transitions. [2023-11-23 21:42:56,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 21:42:56,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:56,210 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:56,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:42:56,210 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:42:56,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:56,211 INFO L85 PathProgramCache]: Analyzing trace with hash -2111471777, now seen corresponding path program 1 times [2023-11-23 21:42:56,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:56,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186433049] [2023-11-23 21:42:56,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:56,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:56,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:56,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:56,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186433049] [2023-11-23 21:42:56,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186433049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:56,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:56,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:42:56,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013360184] [2023-11-23 21:42:56,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:56,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:42:56,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:56,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:42:56,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:42:56,307 INFO L87 Difference]: Start difference. First operand 109 states and 121 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:56,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:56,461 INFO L93 Difference]: Finished difference Result 194 states and 214 transitions. [2023-11-23 21:42:56,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:42:56,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-23 21:42:56,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:56,463 INFO L225 Difference]: With dead ends: 194 [2023-11-23 21:42:56,464 INFO L226 Difference]: Without dead ends: 194 [2023-11-23 21:42:56,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:42:56,468 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 109 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:56,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 172 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:42:56,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-23 21:42:56,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 109. [2023-11-23 21:42:56,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 59 states have (on average 2.016949152542373) internal successors, (119), 108 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) [2023-11-23 21:42:56,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 119 transitions. [2023-11-23 21:42:56,481 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 119 transitions. Word has length 13 [2023-11-23 21:42:56,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:56,481 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 119 transitions. [2023-11-23 21:42:56,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:56,485 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 119 transitions. [2023-11-23 21:42:56,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 21:42:56,486 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:56,486 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:56,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:42:56,487 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:42:56,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:56,488 INFO L85 PathProgramCache]: Analyzing trace with hash -2111471853, now seen corresponding path program 1 times [2023-11-23 21:42:56,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:56,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889643634] [2023-11-23 21:42:56,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:56,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:56,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:56,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889643634] [2023-11-23 21:42:56,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889643634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:56,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:56,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:42:56,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130695059] [2023-11-23 21:42:56,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:56,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:42:56,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:56,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:42:56,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:42:56,627 INFO L87 Difference]: Start difference. First operand 109 states and 119 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:56,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:56,770 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2023-11-23 21:42:56,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:42:56,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-23 21:42:56,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:56,775 INFO L225 Difference]: With dead ends: 103 [2023-11-23 21:42:56,776 INFO L226 Difference]: Without dead ends: 103 [2023-11-23 21:42:56,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:42:56,779 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 48 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:56,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 92 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:42:56,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-23 21:42:56,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2023-11-23 21:42:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 60 states have (on average 1.8833333333333333) internal successors, (113), 101 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:56,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2023-11-23 21:42:56,783 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 13 [2023-11-23 21:42:56,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:56,783 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2023-11-23 21:42:56,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:56,784 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2023-11-23 21:42:56,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 21:42:56,784 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:56,785 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:56,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:42:56,785 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:42:56,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:56,786 INFO L85 PathProgramCache]: Analyzing trace with hash -2111471852, now seen corresponding path program 1 times [2023-11-23 21:42:56,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:56,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762304798] [2023-11-23 21:42:56,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:56,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:57,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:57,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:57,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762304798] [2023-11-23 21:42:57,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762304798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:57,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:57,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:42:57,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4995027] [2023-11-23 21:42:57,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:57,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:42:57,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:57,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:42:57,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:42:57,009 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:57,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:57,249 INFO L93 Difference]: Finished difference Result 171 states and 190 transitions. [2023-11-23 21:42:57,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:42:57,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-23 21:42:57,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:57,251 INFO L225 Difference]: With dead ends: 171 [2023-11-23 21:42:57,251 INFO L226 Difference]: Without dead ends: 171 [2023-11-23 21:42:57,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:42:57,252 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 229 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:57,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 125 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:42:57,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-23 21:42:57,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 130. [2023-11-23 21:42:57,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 90 states have (on average 1.9222222222222223) internal successors, (173), 129 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:57,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 173 transitions. [2023-11-23 21:42:57,259 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 173 transitions. Word has length 13 [2023-11-23 21:42:57,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:57,260 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 173 transitions. [2023-11-23 21:42:57,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:57,260 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 173 transitions. [2023-11-23 21:42:57,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 21:42:57,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:57,262 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:57,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 21:42:57,262 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:42:57,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:57,263 INFO L85 PathProgramCache]: Analyzing trace with hash -429013884, now seen corresponding path program 1 times [2023-11-23 21:42:57,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:57,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338891065] [2023-11-23 21:42:57,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:57,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:57,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:57,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:57,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338891065] [2023-11-23 21:42:57,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338891065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:57,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:57,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:42:57,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726031962] [2023-11-23 21:42:57,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:57,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:42:57,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:57,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:42:57,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:42:57,388 INFO L87 Difference]: Start difference. First operand 130 states and 173 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:57,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:57,566 INFO L93 Difference]: Finished difference Result 170 states and 189 transitions. [2023-11-23 21:42:57,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:42:57,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-11-23 21:42:57,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:57,568 INFO L225 Difference]: With dead ends: 170 [2023-11-23 21:42:57,569 INFO L226 Difference]: Without dead ends: 170 [2023-11-23 21:42:57,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:42:57,570 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 191 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:57,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 193 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:42:57,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-23 21:42:57,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 131. [2023-11-23 21:42:57,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 91 states have (on average 1.9120879120879122) internal successors, (174), 130 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:57,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 174 transitions. [2023-11-23 21:42:57,576 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 174 transitions. Word has length 17 [2023-11-23 21:42:57,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:57,577 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 174 transitions. [2023-11-23 21:42:57,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:57,577 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 174 transitions. [2023-11-23 21:42:57,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 21:42:57,578 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:57,578 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:57,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 21:42:57,580 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:42:57,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:57,581 INFO L85 PathProgramCache]: Analyzing trace with hash -428962239, now seen corresponding path program 1 times [2023-11-23 21:42:57,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:57,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754792022] [2023-11-23 21:42:57,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:57,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:57,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:57,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:57,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754792022] [2023-11-23 21:42:57,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754792022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:57,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:57,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:42:57,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670344042] [2023-11-23 21:42:57,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:57,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:42:57,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:57,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:42:57,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:42:57,887 INFO L87 Difference]: Start difference. First operand 131 states and 174 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:58,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:58,037 INFO L93 Difference]: Finished difference Result 156 states and 200 transitions. [2023-11-23 21:42:58,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:42:58,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-11-23 21:42:58,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:58,039 INFO L225 Difference]: With dead ends: 156 [2023-11-23 21:42:58,039 INFO L226 Difference]: Without dead ends: 156 [2023-11-23 21:42:58,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:42:58,040 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 21 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:58,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 235 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:42:58,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-23 21:42:58,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 137. [2023-11-23 21:42:58,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 97 states have (on average 1.865979381443299) internal successors, (181), 136 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:58,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 181 transitions. [2023-11-23 21:42:58,046 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 181 transitions. Word has length 17 [2023-11-23 21:42:58,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:58,046 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 181 transitions. [2023-11-23 21:42:58,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:58,046 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 181 transitions. [2023-11-23 21:42:58,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 21:42:58,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:58,047 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:58,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 21:42:58,048 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr56REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:42:58,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:58,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1070260494, now seen corresponding path program 1 times [2023-11-23 21:42:58,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:58,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784190657] [2023-11-23 21:42:58,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:58,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:58,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:58,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:58,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784190657] [2023-11-23 21:42:58,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784190657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:58,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:58,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 21:42:58,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772617213] [2023-11-23 21:42:58,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:58,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 21:42:58,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:58,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 21:42:58,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:42:58,486 INFO L87 Difference]: Start difference. First operand 137 states and 181 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:58,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:58,884 INFO L93 Difference]: Finished difference Result 185 states and 236 transitions. [2023-11-23 21:42:58,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 21:42:58,885 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-23 21:42:58,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:58,886 INFO L225 Difference]: With dead ends: 185 [2023-11-23 21:42:58,886 INFO L226 Difference]: Without dead ends: 185 [2023-11-23 21:42:58,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:42:58,887 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 104 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:58,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 264 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:42:58,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-23 21:42:58,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 143. [2023-11-23 21:42:58,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 103 states have (on average 1.8349514563106797) internal successors, (189), 142 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:58,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 189 transitions. [2023-11-23 21:42:58,892 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 189 transitions. Word has length 20 [2023-11-23 21:42:58,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:58,893 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 189 transitions. [2023-11-23 21:42:58,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:58,893 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 189 transitions. [2023-11-23 21:42:58,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 21:42:58,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:58,894 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:58,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 21:42:58,894 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr57REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:42:58,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:58,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1070260495, now seen corresponding path program 1 times [2023-11-23 21:42:58,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:58,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108192624] [2023-11-23 21:42:58,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:58,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:59,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:59,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:59,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108192624] [2023-11-23 21:42:59,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108192624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:59,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:59,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:42:59,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321339982] [2023-11-23 21:42:59,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:59,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:42:59,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:59,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:42:59,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:42:59,445 INFO L87 Difference]: Start difference. First operand 143 states and 189 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:59,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:59,670 INFO L93 Difference]: Finished difference Result 167 states and 211 transitions. [2023-11-23 21:42:59,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:42:59,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-23 21:42:59,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:59,671 INFO L225 Difference]: With dead ends: 167 [2023-11-23 21:42:59,672 INFO L226 Difference]: Without dead ends: 167 [2023-11-23 21:42:59,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:42:59,672 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 47 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:59,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 174 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:42:59,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-11-23 21:42:59,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 143. [2023-11-23 21:42:59,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 103 states have (on average 1.825242718446602) internal successors, (188), 142 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:59,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 188 transitions. [2023-11-23 21:42:59,677 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 188 transitions. Word has length 20 [2023-11-23 21:42:59,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:59,678 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 188 transitions. [2023-11-23 21:42:59,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:42:59,678 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 188 transitions. [2023-11-23 21:42:59,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 21:42:59,679 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:59,679 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:59,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 21:42:59,679 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:42:59,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:59,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1181664402, now seen corresponding path program 1 times [2023-11-23 21:42:59,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:59,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546009351] [2023-11-23 21:42:59,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:59,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:59,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:59,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:59,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546009351] [2023-11-23 21:42:59,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546009351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:59,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:59,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:42:59,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862317820] [2023-11-23 21:42:59,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:59,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:42:59,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:59,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:42:59,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:42:59,951 INFO L87 Difference]: Start difference. First operand 143 states and 188 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:00,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:43:00,108 INFO L93 Difference]: Finished difference Result 158 states and 202 transitions. [2023-11-23 21:43:00,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:43:00,109 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-11-23 21:43:00,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:43:00,110 INFO L225 Difference]: With dead ends: 158 [2023-11-23 21:43:00,110 INFO L226 Difference]: Without dead ends: 158 [2023-11-23 21:43:00,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:43:00,113 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 30 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:43:00,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 236 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:43:00,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-23 21:43:00,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 143. [2023-11-23 21:43:00,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 103 states have (on average 1.8155339805825244) internal successors, (187), 142 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:00,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 187 transitions. [2023-11-23 21:43:00,120 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 187 transitions. Word has length 21 [2023-11-23 21:43:00,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:43:00,120 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 187 transitions. [2023-11-23 21:43:00,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:00,120 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 187 transitions. [2023-11-23 21:43:00,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 21:43:00,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:43:00,124 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:43:00,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 21:43:00,124 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:43:00,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:00,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1181661840, now seen corresponding path program 1 times [2023-11-23 21:43:00,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:00,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796975661] [2023-11-23 21:43:00,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:00,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:00,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:00,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796975661] [2023-11-23 21:43:00,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796975661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:43:00,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:43:00,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:43:00,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027614097] [2023-11-23 21:43:00,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:43:00,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:43:00,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:00,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:43:00,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:43:00,405 INFO L87 Difference]: Start difference. First operand 143 states and 187 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:00,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:43:00,728 INFO L93 Difference]: Finished difference Result 188 states and 234 transitions. [2023-11-23 21:43:00,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 21:43:00,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-11-23 21:43:00,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:43:00,730 INFO L225 Difference]: With dead ends: 188 [2023-11-23 21:43:00,730 INFO L226 Difference]: Without dead ends: 188 [2023-11-23 21:43:00,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:43:00,731 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 156 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:43:00,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 305 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:43:00,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-23 21:43:00,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 144. [2023-11-23 21:43:00,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 104 states have (on average 1.8076923076923077) internal successors, (188), 143 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:00,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 188 transitions. [2023-11-23 21:43:00,737 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 188 transitions. Word has length 21 [2023-11-23 21:43:00,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:43:00,738 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 188 transitions. [2023-11-23 21:43:00,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:00,738 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 188 transitions. [2023-11-23 21:43:00,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 21:43:00,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:43:00,739 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:43:00,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 21:43:00,739 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:43:00,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:00,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2023188848, now seen corresponding path program 1 times [2023-11-23 21:43:00,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:00,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541040991] [2023-11-23 21:43:00,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:00,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:01,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:01,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:01,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541040991] [2023-11-23 21:43:01,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541040991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:43:01,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:43:01,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:43:01,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32850132] [2023-11-23 21:43:01,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:43:01,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:43:01,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:01,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:43:01,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:43:01,065 INFO L87 Difference]: Start difference. First operand 144 states and 188 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:01,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:43:01,315 INFO L93 Difference]: Finished difference Result 164 states and 208 transitions. [2023-11-23 21:43:01,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:43:01,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-11-23 21:43:01,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:43:01,317 INFO L225 Difference]: With dead ends: 164 [2023-11-23 21:43:01,317 INFO L226 Difference]: Without dead ends: 164 [2023-11-23 21:43:01,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:43:01,318 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 43 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:43:01,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 267 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:43:01,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-23 21:43:01,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 145. [2023-11-23 21:43:01,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 105 states have (on average 1.8) internal successors, (189), 144 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:01,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 189 transitions. [2023-11-23 21:43:01,323 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 189 transitions. Word has length 22 [2023-11-23 21:43:01,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:43:01,323 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 189 transitions. [2023-11-23 21:43:01,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:01,324 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 189 transitions. [2023-11-23 21:43:01,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 21:43:01,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:43:01,324 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:43:01,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-23 21:43:01,325 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:43:01,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:01,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1705654926, now seen corresponding path program 1 times [2023-11-23 21:43:01,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:01,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439393289] [2023-11-23 21:43:01,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:01,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:01,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:43:01,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:01,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439393289] [2023-11-23 21:43:01,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439393289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:43:01,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:43:01,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:43:01,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169952236] [2023-11-23 21:43:01,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:43:01,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:43:01,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:01,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:43:01,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:43:01,390 INFO L87 Difference]: Start difference. First operand 145 states and 189 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:01,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:43:01,571 INFO L93 Difference]: Finished difference Result 206 states and 270 transitions. [2023-11-23 21:43:01,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:43:01,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-23 21:43:01,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:43:01,573 INFO L225 Difference]: With dead ends: 206 [2023-11-23 21:43:01,573 INFO L226 Difference]: Without dead ends: 206 [2023-11-23 21:43:01,574 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 [2023-11-23 21:43:01,574 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 66 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:43:01,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 172 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:43:01,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-23 21:43:01,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 149. [2023-11-23 21:43:01,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 111 states have (on average 1.8018018018018018) internal successors, (200), 148 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:01,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 200 transitions. [2023-11-23 21:43:01,580 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 200 transitions. Word has length 23 [2023-11-23 21:43:01,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:43:01,580 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 200 transitions. [2023-11-23 21:43:01,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:01,580 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 200 transitions. [2023-11-23 21:43:01,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 21:43:01,581 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:43:01,581 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:43:01,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-23 21:43:01,581 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr56REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:43:01,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:01,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1543130101, now seen corresponding path program 1 times [2023-11-23 21:43:01,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:01,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128498385] [2023-11-23 21:43:01,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:01,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:02,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:02,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:02,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128498385] [2023-11-23 21:43:02,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128498385] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:43:02,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830074994] [2023-11-23 21:43:02,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:02,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:43:02,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:43:02,336 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:43:02,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:43:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:02,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-23 21:43:02,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:43:02,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:43:02,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:43:02,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-23 21:43:02,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-23 21:43:02,678 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 21:43:02,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-23 21:43:02,709 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 21:43:02,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-23 21:43:02,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-11-23 21:43:02,816 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-23 21:43:02,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 31 [2023-11-23 21:43:03,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:43:03,527 INFO L349 Elim1Store]: treesize reduction 28, result has 69.9 percent of original size [2023-11-23 21:43:03,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 95 treesize of output 121 [2023-11-23 21:43:03,626 INFO L349 Elim1Store]: treesize reduction 4, result has 91.8 percent of original size [2023-11-23 21:43:03,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 89 [2023-11-23 21:43:03,674 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-23 21:43:03,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 49 [2023-11-23 21:43:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:03,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:43:04,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-23 21:43:04,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2023-11-23 21:43:04,577 INFO L349 Elim1Store]: treesize reduction 10, result has 66.7 percent of original size [2023-11-23 21:43:04,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 64 [2023-11-23 21:43:05,044 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (= |c_ULTIMATE.start_main_~lItem~0#1.offset| 0))) (let ((.cse0 (not .cse1)) (.cse3 (+ 4 |c_ULTIMATE.start_main_~lItem~0#1.offset|))) (and (or .cse0 (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~lItem~0#1.base| Int)) (or (= |ULTIMATE.start_main_~lItem~0#1.base| |c_ULTIMATE.start_main_~item~0#1.base|) (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) |c_ULTIMATE.start_main_~item~0#1.base|) 0) 0) (not (= (select v_arrayElimArr_1 4) |c_ULTIMATE.start_main_~item~0#1.base|))))) (or .cse1 (and (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_arrayElimCell_20 Int)) (or (= |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimCell_20) (forall ((v_ArrVal_421 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_421))) (or (= (select (select .cse2 v_arrayElimCell_20) 0) 0) (= 0 (select (select .cse2 |c_ULTIMATE.start_main_~item~0#1.base|) 0))))))) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_421 (Array Int Int)) (v_arrayElimCell_20 Int)) (or (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_421) v_arrayElimCell_20) 0) 0) (= |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimCell_20))))) (or .cse1 (and (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~lItem~0#1.base| Int)) (let ((.cse4 (select v_arrayElimArr_1 4))) (or (not (= (select v_arrayElimArr_1 .cse3) |c_ULTIMATE.start_main_~item~0#1.base|)) (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) .cse4) 0) 0) (= |ULTIMATE.start_main_~lItem~0#1.base| .cse4)))) (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~lItem~0#1.base| Int)) (let ((.cse5 (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1)) (.cse6 (select v_arrayElimArr_1 4))) (or (not (= (select v_arrayElimArr_1 .cse3) |c_ULTIMATE.start_main_~item~0#1.base|)) (= (select (select .cse5 .cse6) 0) 0) (= (select (select .cse5 |c_ULTIMATE.start_main_~item~0#1.base|) 0) 0) (= |ULTIMATE.start_main_~lItem~0#1.base| .cse6)))))) (or .cse1 (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_421 (Array Int Int)) (v_arrayElimCell_20 Int)) (or (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_421) v_arrayElimCell_20) 0) 0) (= |ULTIMATE.start_main_~lItem~0#1.base| |c_ULTIMATE.start_main_~item~0#1.base|) (= |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimCell_20)))) (or .cse0 (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_421 (Array Int Int))) (or (= |ULTIMATE.start_main_~lItem~0#1.base| |c_ULTIMATE.start_main_~item~0#1.base|) (= 0 (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_421) |c_ULTIMATE.start_main_~item~0#1.base|) 0))))) (or .cse0 (and (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int)) (or (= |ULTIMATE.start_main_~lItem~0#1.base| |c_ULTIMATE.start_main_~item~0#1.base|) (forall ((v_arrayElimArr_1 (Array Int Int))) (let ((.cse7 (select v_arrayElimArr_1 4))) (or (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) .cse7) 0) 0) (not (= .cse7 |c_ULTIMATE.start_main_~item~0#1.base|))))))) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int)) (or (forall ((v_arrayElimArr_1 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) |c_ULTIMATE.start_main_~item~0#1.base|) 0) 0) (not (= (select v_arrayElimArr_1 4) |c_ULTIMATE.start_main_~item~0#1.base|)))) (= |ULTIMATE.start_main_~lItem~0#1.base| |c_ULTIMATE.start_main_~item~0#1.base|))))) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int)) (or (forall ((v_arrayElimCell_20 Int)) (or (= |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimCell_20) (forall ((v_ArrVal_421 (Array Int Int))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_421))) (or (= (select (select .cse8 v_arrayElimCell_20) 0) 0) (= 0 (select (select .cse8 |c_ULTIMATE.start_main_~item~0#1.base|) 0))))))) (= |ULTIMATE.start_main_~lItem~0#1.base| |c_ULTIMATE.start_main_~item~0#1.base|))) (or .cse1 (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~lItem~0#1.base| Int)) (let ((.cse9 (select v_arrayElimArr_1 4))) (or (not (= (select v_arrayElimArr_1 .cse3) |c_ULTIMATE.start_main_~item~0#1.base|)) (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) .cse9) 0) 0) (= |ULTIMATE.start_main_~lItem~0#1.base| |c_ULTIMATE.start_main_~item~0#1.base|) (= |ULTIMATE.start_main_~lItem~0#1.base| .cse9))))) (or (and (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int)) (or (forall ((v_ArrVal_421 (Array Int Int)) (v_arrayElimCell_20 Int)) (let ((.cse10 (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_421))) (or (= (select (select .cse10 v_arrayElimCell_20) 0) 0) (= 0 (select (select .cse10 |c_ULTIMATE.start_main_~item~0#1.base|) 0))))) (= |ULTIMATE.start_main_~lItem~0#1.base| |c_ULTIMATE.start_main_~item~0#1.base|))) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int)) (or (= |ULTIMATE.start_main_~lItem~0#1.base| |c_ULTIMATE.start_main_~item~0#1.base|) (forall ((v_ArrVal_421 (Array Int Int))) (= 0 (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_421) |c_ULTIMATE.start_main_~item~0#1.base|) 0)))))) .cse0) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int)) (or (forall ((v_arrayElimArr_1 (Array Int Int))) (let ((.cse11 (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1)) (.cse12 (select v_arrayElimArr_1 4))) (or (not (= (select v_arrayElimArr_1 .cse3) |c_ULTIMATE.start_main_~item~0#1.base|)) (= (select (select .cse11 .cse12) 0) 0) (= (select (select .cse11 |c_ULTIMATE.start_main_~item~0#1.base|) 0) 0) (= |ULTIMATE.start_main_~lItem~0#1.base| .cse12)))) (= |ULTIMATE.start_main_~lItem~0#1.base| |c_ULTIMATE.start_main_~item~0#1.base|)))))) is different from false [2023-11-23 21:43:05,462 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|)) (.cse0 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_main_~item~0#1.offset| 4))) (and (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_416 Int)) (or (forall ((v_arrayElimArr_1 (Array Int Int))) (or (not (= (select v_arrayElimArr_1 4) |c_ULTIMATE.start_main_~item~0#1.base|)) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store .cse0 .cse1 v_ArrVal_416)) |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) |c_ULTIMATE.start_main_~item~0#1.base|) 0) 0))) (= |ULTIMATE.start_main_~lItem~0#1.base| |c_ULTIMATE.start_main_~item~0#1.base|))) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_417 Int)) (or (forall ((v_ArrVal_421 (Array Int Int)) (v_arrayElimCell_20 Int)) (let ((.cse2 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store .cse3 .cse1 v_ArrVal_417)) |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_421))) (or (= 0 (select (select .cse2 |c_ULTIMATE.start_main_~item~0#1.base|) 0)) (= (select (select .cse2 v_arrayElimCell_20) 0) 0)))) (= |ULTIMATE.start_main_~lItem~0#1.base| |c_ULTIMATE.start_main_~item~0#1.base|))) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_417 Int)) (or (= |ULTIMATE.start_main_~lItem~0#1.base| |c_ULTIMATE.start_main_~item~0#1.base|) (forall ((v_ArrVal_421 (Array Int Int))) (= 0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store .cse3 .cse1 v_ArrVal_417)) |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_421) |c_ULTIMATE.start_main_~item~0#1.base|) 0))))) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_416 Int)) (or (= |ULTIMATE.start_main_~lItem~0#1.base| |c_ULTIMATE.start_main_~item~0#1.base|) (forall ((v_arrayElimArr_1 (Array Int Int))) (let ((.cse4 (select v_arrayElimArr_1 4))) (or (not (= .cse4 |c_ULTIMATE.start_main_~item~0#1.base|)) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store .cse0 .cse1 v_ArrVal_416)) |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) .cse4) 0) 0)))))) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_417 Int) (v_ArrVal_421 (Array Int Int))) (or (= 0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store .cse3 .cse1 v_ArrVal_417)) |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_421) |c_ULTIMATE.start_main_~item~0#1.base|) 0)) (= |ULTIMATE.start_main_~lItem~0#1.base| |c_ULTIMATE.start_main_~item~0#1.base|))) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_417 Int)) (or (= |ULTIMATE.start_main_~lItem~0#1.base| |c_ULTIMATE.start_main_~item~0#1.base|) (forall ((v_arrayElimCell_20 Int)) (or (forall ((v_ArrVal_421 (Array Int Int))) (let ((.cse5 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store .cse3 .cse1 v_ArrVal_417)) |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_421))) (or (= 0 (select (select .cse5 |c_ULTIMATE.start_main_~item~0#1.base|) 0)) (= (select (select .cse5 v_arrayElimCell_20) 0) 0)))) (= |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimCell_20))))) (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_416 Int)) (or (= |ULTIMATE.start_main_~lItem~0#1.base| |c_ULTIMATE.start_main_~item~0#1.base|) (not (= (select v_arrayElimArr_1 4) |c_ULTIMATE.start_main_~item~0#1.base|)) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store .cse0 .cse1 v_ArrVal_416)) |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) |c_ULTIMATE.start_main_~item~0#1.base|) 0) 0))))) is different from false [2023-11-23 21:43:05,549 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:43:05,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 39 [2023-11-23 21:43:05,555 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:43:05,556 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:43:05,576 INFO L349 Elim1Store]: treesize reduction 16, result has 42.9 percent of original size [2023-11-23 21:43:05,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 22 [2023-11-23 21:43:05,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:05,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830074994] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:43:05,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:43:05,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 30 [2023-11-23 21:43:05,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197609411] [2023-11-23 21:43:05,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:43:05,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-23 21:43:05,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:05,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-23 21:43:05,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=644, Unknown=11, NotChecked=106, Total=870 [2023-11-23 21:43:05,594 INFO L87 Difference]: Start difference. First operand 149 states and 200 transitions. Second operand has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:07,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:43:07,199 INFO L93 Difference]: Finished difference Result 171 states and 223 transitions. [2023-11-23 21:43:07,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-23 21:43:07,199 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 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 25 [2023-11-23 21:43:07,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:43:07,201 INFO L225 Difference]: With dead ends: 171 [2023-11-23 21:43:07,201 INFO L226 Difference]: Without dead ends: 171 [2023-11-23 21:43:07,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=263, Invalid=1456, Unknown=11, NotChecked=162, Total=1892 [2023-11-23 21:43:07,203 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 178 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:43:07,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 632 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 825 Invalid, 0 Unknown, 198 Unchecked, 0.8s Time] [2023-11-23 21:43:07,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-23 21:43:07,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 151. [2023-11-23 21:43:07,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 113 states have (on average 1.7876106194690264) internal successors, (202), 150 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:07,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 202 transitions. [2023-11-23 21:43:07,208 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 202 transitions. Word has length 25 [2023-11-23 21:43:07,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:43:07,208 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 202 transitions. [2023-11-23 21:43:07,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:07,208 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 202 transitions. [2023-11-23 21:43:07,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 21:43:07,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:43:07,209 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:43:07,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:43:07,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:43:07,410 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:43:07,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:07,410 INFO L85 PathProgramCache]: Analyzing trace with hash 592391527, now seen corresponding path program 1 times [2023-11-23 21:43:07,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:07,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667954147] [2023-11-23 21:43:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:07,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:07,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:07,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667954147] [2023-11-23 21:43:07,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667954147] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:43:07,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30056837] [2023-11-23 21:43:07,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:07,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:43:07,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:43:07,852 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:43:07,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:43:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:07,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-23 21:43:07,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:43:08,019 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-23 21:43:08,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 27 [2023-11-23 21:43:08,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 21:43:08,278 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:43:08,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 30 [2023-11-23 21:43:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:08,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:43:09,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 105 [2023-11-23 21:43:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:10,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30056837] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:43:10,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:43:10,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 12] total 29 [2023-11-23 21:43:10,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499866868] [2023-11-23 21:43:10,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:43:10,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-23 21:43:10,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:10,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-23 21:43:10,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=819, Unknown=0, NotChecked=0, Total=930 [2023-11-23 21:43:10,892 INFO L87 Difference]: Start difference. First operand 151 states and 202 transitions. Second operand has 31 states, 30 states have (on average 2.433333333333333) internal successors, (73), 30 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:14,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:43:14,318 INFO L93 Difference]: Finished difference Result 153 states and 203 transitions. [2023-11-23 21:43:14,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 21:43:14,318 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.433333333333333) internal successors, (73), 30 states have internal predecessors, (73), 0 states have call successors, (0), 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 26 [2023-11-23 21:43:14,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:43:14,320 INFO L225 Difference]: With dead ends: 153 [2023-11-23 21:43:14,320 INFO L226 Difference]: Without dead ends: 138 [2023-11-23 21:43:14,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=255, Invalid=1467, Unknown=0, NotChecked=0, Total=1722 [2023-11-23 21:43:14,321 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 61 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:43:14,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 511 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 21:43:14,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-23 21:43:14,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2023-11-23 21:43:14,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 100 states have (on average 1.88) internal successors, (188), 137 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:14,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 188 transitions. [2023-11-23 21:43:14,327 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 188 transitions. Word has length 26 [2023-11-23 21:43:14,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:43:14,327 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 188 transitions. [2023-11-23 21:43:14,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.433333333333333) internal successors, (73), 30 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:14,327 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 188 transitions. [2023-11-23 21:43:14,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 21:43:14,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:43:14,328 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:43:14,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 21:43:14,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:43:14,549 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:43:14,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:14,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1229614947, now seen corresponding path program 1 times [2023-11-23 21:43:14,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:14,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297298651] [2023-11-23 21:43:14,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:14,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:15,252 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:15,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:15,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297298651] [2023-11-23 21:43:15,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297298651] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:43:15,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090987162] [2023-11-23 21:43:15,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:15,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:43:15,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:43:15,257 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:43:15,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:43:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:15,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-23 21:43:15,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:43:15,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 21:43:15,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:43:15,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:43:15,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 42 [2023-11-23 21:43:15,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 11 [2023-11-23 21:43:15,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-23 21:43:15,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-23 21:43:15,747 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:15,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:43:15,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090987162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:43:15,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:43:15,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2023-11-23 21:43:15,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245291876] [2023-11-23 21:43:15,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:43:15,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:43:15,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:15,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:43:15,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:43:15,750 INFO L87 Difference]: Start difference. First operand 138 states and 188 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:16,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:43:16,211 INFO L93 Difference]: Finished difference Result 171 states and 198 transitions. [2023-11-23 21:43:16,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 21:43:16,211 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-23 21:43:16,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:43:16,213 INFO L225 Difference]: With dead ends: 171 [2023-11-23 21:43:16,213 INFO L226 Difference]: Without dead ends: 171 [2023-11-23 21:43:16,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2023-11-23 21:43:16,214 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 229 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:43:16,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 239 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:43:16,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-23 21:43:16,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 138. [2023-11-23 21:43:16,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 100 states have (on average 1.85) internal successors, (185), 137 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:16,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 185 transitions. [2023-11-23 21:43:16,219 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 185 transitions. Word has length 27 [2023-11-23 21:43:16,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:43:16,220 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 185 transitions. [2023-11-23 21:43:16,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:16,220 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 185 transitions. [2023-11-23 21:43:16,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 21:43:16,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:43:16,221 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:43:16,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:43:16,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-23 21:43:16,442 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:43:16,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:16,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1229614948, now seen corresponding path program 1 times [2023-11-23 21:43:16,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:16,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567213158] [2023-11-23 21:43:16,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:16,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:16,809 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:16,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:16,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567213158] [2023-11-23 21:43:16,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567213158] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:43:16,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894920580] [2023-11-23 21:43:16,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:16,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:43:16,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:43:16,811 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:43:16,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:43:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:16,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 21:43:16,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:43:17,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:43:17,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:43:17,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:43:17,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2023-11-23 21:43:17,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-23 21:43:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:17,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:43:19,314 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:19,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894920580] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:43:19,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:43:19,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2023-11-23 21:43:19,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785215704] [2023-11-23 21:43:19,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:43:19,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-23 21:43:19,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:19,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-23 21:43:19,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=271, Unknown=1, NotChecked=0, Total=342 [2023-11-23 21:43:19,317 INFO L87 Difference]: Start difference. First operand 138 states and 185 transitions. Second operand has 19 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:19,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:43:19,765 INFO L93 Difference]: Finished difference Result 158 states and 185 transitions. [2023-11-23 21:43:19,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 21:43:19,768 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-23 21:43:19,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:43:19,770 INFO L225 Difference]: With dead ends: 158 [2023-11-23 21:43:19,770 INFO L226 Difference]: Without dead ends: 158 [2023-11-23 21:43:19,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=199, Invalid=556, Unknown=1, NotChecked=0, Total=756 [2023-11-23 21:43:19,771 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 567 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:43:19,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 284 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:43:19,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-23 21:43:19,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 138. [2023-11-23 21:43:19,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 100 states have (on average 1.84) internal successors, (184), 137 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:19,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 184 transitions. [2023-11-23 21:43:19,775 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 184 transitions. Word has length 27 [2023-11-23 21:43:19,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:43:19,776 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 184 transitions. [2023-11-23 21:43:19,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:19,776 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 184 transitions. [2023-11-23 21:43:19,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:43:19,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:43:19,779 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:43:19,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:43:19,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-23 21:43:19,980 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:43:19,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:19,980 INFO L85 PathProgramCache]: Analyzing trace with hash -543824063, now seen corresponding path program 1 times [2023-11-23 21:43:19,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:19,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309389177] [2023-11-23 21:43:19,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:19,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 21:43:20,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:20,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309389177] [2023-11-23 21:43:20,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309389177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:43:20,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:43:20,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:43:20,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935644851] [2023-11-23 21:43:20,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:43:20,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:43:20,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:20,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:43:20,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:43:20,080 INFO L87 Difference]: Start difference. First operand 138 states and 184 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:20,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:43:20,231 INFO L93 Difference]: Finished difference Result 137 states and 182 transitions. [2023-11-23 21:43:20,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:43:20,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-23 21:43:20,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:43:20,232 INFO L225 Difference]: With dead ends: 137 [2023-11-23 21:43:20,233 INFO L226 Difference]: Without dead ends: 137 [2023-11-23 21:43:20,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:43:20,233 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 21 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:43:20,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 181 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:43:20,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-23 21:43:20,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-11-23 21:43:20,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 100 states have (on average 1.82) internal successors, (182), 136 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:20,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 182 transitions. [2023-11-23 21:43:20,238 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 182 transitions. Word has length 29 [2023-11-23 21:43:20,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:43:20,238 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 182 transitions. [2023-11-23 21:43:20,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:20,238 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 182 transitions. [2023-11-23 21:43:20,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-23 21:43:20,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:43:20,238 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:43:20,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-23 21:43:20,239 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr56REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:43:20,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:20,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1221168846, now seen corresponding path program 1 times [2023-11-23 21:43:20,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:20,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622950647] [2023-11-23 21:43:20,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:20,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:20,578 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:20,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:20,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622950647] [2023-11-23 21:43:20,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622950647] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:43:20,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079056358] [2023-11-23 21:43:20,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:20,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:43:20,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:43:20,582 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:43:20,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:43:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:20,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-23 21:43:20,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:43:20,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:43:20,773 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-23 21:43:20,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-23 21:43:20,790 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-23 21:43:20,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-23 21:43:20,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:43:20,817 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-23 21:43:20,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-11-23 21:43:20,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-23 21:43:20,829 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:20,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:43:20,842 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_940 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_940) |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset|) |c_ULTIMATE.start_main_~data~0#1.base|))) is different from false [2023-11-23 21:43:20,849 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:43:20,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2023-11-23 21:43:20,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-11-23 21:43:20,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-11-23 21:43:20,915 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-23 21:43:20,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079056358] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:43:20,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:43:20,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2023-11-23 21:43:20,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034528335] [2023-11-23 21:43:20,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:43:20,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 21:43:20,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:20,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 21:43:20,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2023-11-23 21:43:20,918 INFO L87 Difference]: Start difference. First operand 137 states and 182 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:21,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:43:21,346 INFO L93 Difference]: Finished difference Result 153 states and 179 transitions. [2023-11-23 21:43:21,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:43:21,347 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 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 30 [2023-11-23 21:43:21,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:43:21,348 INFO L225 Difference]: With dead ends: 153 [2023-11-23 21:43:21,348 INFO L226 Difference]: Without dead ends: 153 [2023-11-23 21:43:21,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=224, Unknown=1, NotChecked=32, Total=342 [2023-11-23 21:43:21,349 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 137 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:43:21,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 397 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 463 Invalid, 0 Unknown, 109 Unchecked, 0.3s Time] [2023-11-23 21:43:21,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-23 21:43:21,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 134. [2023-11-23 21:43:21,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 97 states have (on average 1.824742268041237) internal successors, (177), 133 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:21,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 177 transitions. [2023-11-23 21:43:21,378 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 177 transitions. Word has length 30 [2023-11-23 21:43:21,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:43:21,378 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 177 transitions. [2023-11-23 21:43:21,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:21,379 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 177 transitions. [2023-11-23 21:43:21,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-23 21:43:21,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:43:21,379 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:43:21,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:43:21,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-23 21:43:21,589 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:43:21,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:21,590 INFO L85 PathProgramCache]: Analyzing trace with hash -445839527, now seen corresponding path program 1 times [2023-11-23 21:43:21,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:21,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683843380] [2023-11-23 21:43:21,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:21,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:22,084 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:22,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:22,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683843380] [2023-11-23 21:43:22,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683843380] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:43:22,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978207170] [2023-11-23 21:43:22,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:22,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:43:22,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:43:22,089 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:43:22,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 21:43:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:22,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 21:43:22,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:43:22,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:43:22,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:43:22,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2023-11-23 21:43:22,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-23 21:43:22,446 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:22,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:43:22,576 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:22,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978207170] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:43:22,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:43:22,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2023-11-23 21:43:22,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478002463] [2023-11-23 21:43:22,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:43:22,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 21:43:22,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:22,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 21:43:22,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:43:22,579 INFO L87 Difference]: Start difference. First operand 134 states and 177 transitions. Second operand has 18 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:22,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:43:22,997 INFO L93 Difference]: Finished difference Result 150 states and 176 transitions. [2023-11-23 21:43:22,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 21:43:22,998 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 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 32 [2023-11-23 21:43:22,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:43:22,999 INFO L225 Difference]: With dead ends: 150 [2023-11-23 21:43:22,999 INFO L226 Difference]: Without dead ends: 150 [2023-11-23 21:43:23,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2023-11-23 21:43:23,000 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 658 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:43:23,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 353 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:43:23,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-23 21:43:23,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 134. [2023-11-23 21:43:23,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 97 states have (on average 1.8144329896907216) internal successors, (176), 133 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:23,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 176 transitions. [2023-11-23 21:43:23,010 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 176 transitions. Word has length 32 [2023-11-23 21:43:23,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:43:23,010 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 176 transitions. [2023-11-23 21:43:23,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 18 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:23,011 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 176 transitions. [2023-11-23 21:43:23,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-23 21:43:23,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:43:23,012 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:43:23,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:43:23,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-23 21:43:23,213 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:43:23,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:23,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1966342230, now seen corresponding path program 1 times [2023-11-23 21:43:23,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:23,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656758906] [2023-11-23 21:43:23,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:23,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:24,167 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:24,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:24,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656758906] [2023-11-23 21:43:24,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656758906] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:43:24,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787976252] [2023-11-23 21:43:24,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:24,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:43:24,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:43:24,173 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:43:24,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 21:43:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:24,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-23 21:43:24,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:43:24,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:43:24,394 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-23 21:43:24,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-23 21:43:24,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 21:43:24,554 INFO L349 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2023-11-23 21:43:24,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2023-11-23 21:43:24,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-11-23 21:43:24,668 INFO L349 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2023-11-23 21:43:24,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2023-11-23 21:43:24,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 31 [2023-11-23 21:43:24,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-11-23 21:43:24,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2023-11-23 21:43:24,896 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-23 21:43:24,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 47 [2023-11-23 21:43:25,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 29 [2023-11-23 21:43:25,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2023-11-23 21:43:25,455 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:25,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:43:26,247 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:43:26,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 161 treesize of output 111 [2023-11-23 21:43:26,266 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:43:26,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 262 treesize of output 255 [2023-11-23 21:43:26,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 45 [2023-11-23 21:43:26,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2023-11-23 21:43:28,761 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:28,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787976252] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:43:28,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:43:28,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 16] total 40 [2023-11-23 21:43:28,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52603201] [2023-11-23 21:43:28,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:43:28,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-23 21:43:28,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:43:28,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-23 21:43:28,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1401, Unknown=14, NotChecked=0, Total=1640 [2023-11-23 21:43:28,764 INFO L87 Difference]: Start difference. First operand 134 states and 176 transitions. Second operand has 41 states, 40 states have (on average 2.475) internal successors, (99), 41 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) [2023-11-23 21:43:32,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:43:32,264 INFO L93 Difference]: Finished difference Result 320 states and 384 transitions. [2023-11-23 21:43:32,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-23 21:43:32,264 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.475) internal successors, (99), 41 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 35 [2023-11-23 21:43:32,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:43:32,266 INFO L225 Difference]: With dead ends: 320 [2023-11-23 21:43:32,266 INFO L226 Difference]: Without dead ends: 320 [2023-11-23 21:43:32,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=645, Invalid=3247, Unknown=14, NotChecked=0, Total=3906 [2023-11-23 21:43:32,268 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 747 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 75 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1605 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:43:32,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 746 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1605 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2023-11-23 21:43:32,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-11-23 21:43:32,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 132. [2023-11-23 21:43:32,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 95 states have (on average 1.8) internal successors, (171), 131 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:43:32,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 171 transitions. [2023-11-23 21:43:32,274 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 171 transitions. Word has length 35 [2023-11-23 21:43:32,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:43:32,274 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 171 transitions. [2023-11-23 21:43:32,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.475) internal successors, (99), 41 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) [2023-11-23 21:43:32,275 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 171 transitions. [2023-11-23 21:43:32,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-23 21:43:32,275 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:43:32,275 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:43:32,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-23 21:43:32,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-23 21:43:32,497 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2023-11-23 21:43:32,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:43:32,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1966342229, now seen corresponding path program 1 times [2023-11-23 21:43:32,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:43:32,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576971461] [2023-11-23 21:43:32,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:32,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:43:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:33,704 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:33,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:43:33,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576971461] [2023-11-23 21:43:33,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576971461] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:43:33,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846697233] [2023-11-23 21:43:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:43:33,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:43:33,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:43:33,709 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:43:33,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab49cba0-5f48-4d37-b9c6-5fed06e7d7f8/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 21:43:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:43:33,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-23 21:43:33,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:43:33,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:43:33,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 21:43:33,970 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-23 21:43:33,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-23 21:43:33,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 21:43:34,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 21:43:34,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:43:34,147 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-23 21:43:34,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 21 [2023-11-23 21:43:34,198 INFO L349 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2023-11-23 21:43:34,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2023-11-23 21:43:34,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 32 [2023-11-23 21:43:34,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-23 21:43:34,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 32 [2023-11-23 21:43:34,366 INFO L349 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2023-11-23 21:43:34,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-11-23 21:43:34,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-23 21:43:34,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-23 21:43:34,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-11-23 21:43:34,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-23 21:43:34,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-23 21:43:34,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2023-11-23 21:43:34,678 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-23 21:43:34,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 84 [2023-11-23 21:43:34,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 21 [2023-11-23 21:43:34,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2023-11-23 21:43:34,992 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:43:34,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 26 [2023-11-23 21:43:35,146 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:43:35,146 INFO L327 TraceCheckSpWp]: Computing backward predicates...