./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:18:46,333 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:18:46,386 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:18:46,392 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:18:46,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:18:46,410 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:18:46,410 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:18:46,411 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:18:46,411 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:18:46,411 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:18:46,412 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:18:46,412 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:18:46,412 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:18:46,412 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:18:46,413 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:18:46,413 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:18:46,413 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:18:46,413 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:18:46,413 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:18:46,413 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:18:46,413 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:18:46,413 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:18:46,413 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:18:46,414 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:18:46,414 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:18:46,414 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:18:46,414 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:18:46,414 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:18:46,414 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:18:46,414 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:18:46,414 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:18:46,414 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:18:46,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:18:46,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:18:46,415 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:18:46,415 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:18:46,415 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:18:46,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:18:46,415 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:18:46,415 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:18:46,415 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:18:46,415 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:18:46,415 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 [2025-03-04 09:18:46,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:18:46,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:18:46,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:18:46,638 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:18:46,639 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:18:46,640 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2025-03-04 09:18:47,825 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/424afaca2/69f0aaf8db164c9b9205f0ef461a87d4/FLAGe58cfac46 [2025-03-04 09:18:48,149 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:18:48,151 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2025-03-04 09:18:48,166 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/424afaca2/69f0aaf8db164c9b9205f0ef461a87d4/FLAGe58cfac46 [2025-03-04 09:18:48,182 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/424afaca2/69f0aaf8db164c9b9205f0ef461a87d4 [2025-03-04 09:18:48,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:18:48,185 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:18:48,186 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:18:48,187 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:18:48,190 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:18:48,191 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:18:48" (1/1) ... [2025-03-04 09:18:48,192 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a855096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:18:48, skipping insertion in model container [2025-03-04 09:18:48,192 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:18:48" (1/1) ... [2025-03-04 09:18:48,231 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:18:48,529 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:48,561 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:48,563 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:48,568 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:48,577 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:48,588 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:18:48,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:18:48,606 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:18:48,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:18:48,691 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:18:48,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:18:48 WrapperNode [2025-03-04 09:18:48,691 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:18:48,692 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:18:48,692 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:18:48,692 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:18:48,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:18:48" (1/1) ... [2025-03-04 09:18:48,709 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:18:48" (1/1) ... [2025-03-04 09:18:48,746 INFO L138 Inliner]: procedures = 176, calls = 180, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 823 [2025-03-04 09:18:48,747 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:18:48,748 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:18:48,748 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:18:48,748 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:18:48,755 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:18:48" (1/1) ... [2025-03-04 09:18:48,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:18:48" (1/1) ... [2025-03-04 09:18:48,767 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:18:48" (1/1) ... [2025-03-04 09:18:48,809 INFO L175 MemorySlicer]: Split 158 memory accesses to 2 slices as follows [2, 156]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 42 writes are split as follows [0, 42]. [2025-03-04 09:18:48,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:18:48" (1/1) ... [2025-03-04 09:18:48,810 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:18:48" (1/1) ... [2025-03-04 09:18:48,835 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:18:48" (1/1) ... [2025-03-04 09:18:48,837 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:18:48" (1/1) ... [2025-03-04 09:18:48,839 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:18:48" (1/1) ... [2025-03-04 09:18:48,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:18:48" (1/1) ... [2025-03-04 09:18:48,847 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:18:48,851 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:18:48,851 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:18:48,851 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:18:48,852 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:18:48" (1/1) ... [2025-03-04 09:18:48,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:18:48,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:18:48,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 09:18:48,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 09:18:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 09:18:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 09:18:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-04 09:18:48,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-04 09:18:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 09:18:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 09:18:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-04 09:18:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-04 09:18:48,898 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-04 09:18:48,898 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-04 09:18:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 09:18:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:18:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 09:18:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 09:18:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 09:18:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 09:18:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 09:18:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 09:18:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 09:18:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:18:48,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:18:49,031 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:18:49,032 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:18:50,195 INFO L? ?]: Removed 775 outVars from TransFormulas that were not future-live. [2025-03-04 09:18:50,196 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:18:50,240 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:18:50,241 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2025-03-04 09:18:50,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:18:50 BoogieIcfgContainer [2025-03-04 09:18:50,241 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:18:50,243 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:18:50,243 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:18:50,246 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:18:50,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:18:48" (1/3) ... [2025-03-04 09:18:50,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53706860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:18:50, skipping insertion in model container [2025-03-04 09:18:50,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:18:48" (2/3) ... [2025-03-04 09:18:50,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53706860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:18:50, skipping insertion in model container [2025-03-04 09:18:50,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:18:50" (3/3) ... [2025-03-04 09:18:50,248 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_test1-1.i [2025-03-04 09:18:50,258 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:18:50,260 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_test1-1.i that has 4 procedures, 758 locations, 1 initial locations, 19 loop locations, and 320 error locations. [2025-03-04 09:18:50,295 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:18:50,302 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@2cec7cca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:18:50,302 INFO L334 AbstractCegarLoop]: Starting to check reachability of 320 error locations. [2025-03-04 09:18:50,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 753 states, 420 states have (on average 2.0642857142857145) internal successors, (867), 747 states have internal predecessors, (867), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:18:50,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-04 09:18:50,311 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:18:50,311 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 09:18:50,312 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:18:50,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:18:50,317 INFO L85 PathProgramCache]: Analyzing trace with hash 910498324, now seen corresponding path program 1 times [2025-03-04 09:18:50,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:18:50,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519815664] [2025-03-04 09:18:50,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:18:50,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:18:50,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 09:18:50,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 09:18:50,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:18:50,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:18:50,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:18:50,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:18:50,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519815664] [2025-03-04 09:18:50,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519815664] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:18:50,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:18:50,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:18:50,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973813580] [2025-03-04 09:18:50,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:18:50,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:18:50,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:18:50,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:18:50,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:18:50,479 INFO L87 Difference]: Start difference. First operand has 753 states, 420 states have (on average 2.0642857142857145) internal successors, (867), 747 states have internal predecessors, (867), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 1.6666666666666667) 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) [2025-03-04 09:18:50,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:18:50,660 INFO L93 Difference]: Finished difference Result 1434 states and 1628 transitions. [2025-03-04 09:18:50,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:18:50,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) 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 [2025-03-04 09:18:50,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:18:50,674 INFO L225 Difference]: With dead ends: 1434 [2025-03-04 09:18:50,674 INFO L226 Difference]: Without dead ends: 1432 [2025-03-04 09:18:50,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:18:50,678 INFO L435 NwaCegarLoop]: 1069 mSDtfsCounter, 771 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:18:50,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 1890 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 09:18:50,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2025-03-04 09:18:50,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 742. [2025-03-04 09:18:50,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 415 states have (on average 1.9831325301204819) internal successors, (823), 736 states have internal predecessors, (823), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:18:50,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 849 transitions. [2025-03-04 09:18:50,732 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 849 transitions. Word has length 5 [2025-03-04 09:18:50,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:18:50,732 INFO L471 AbstractCegarLoop]: Abstraction has 742 states and 849 transitions. [2025-03-04 09:18:50,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) 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) [2025-03-04 09:18:50,733 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 849 transitions. [2025-03-04 09:18:50,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-04 09:18:50,733 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:18:50,733 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 09:18:50,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 09:18:50,733 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr317REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:18:50,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:18:50,734 INFO L85 PathProgramCache]: Analyzing trace with hash 911329464, now seen corresponding path program 1 times [2025-03-04 09:18:50,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:18:50,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299881312] [2025-03-04 09:18:50,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:18:50,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:18:50,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 09:18:50,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 09:18:50,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:18:50,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:18:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:18:50,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:18:50,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299881312] [2025-03-04 09:18:50,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299881312] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:18:50,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:18:50,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:18:50,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772644754] [2025-03-04 09:18:50,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:18:50,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:18:50,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:18:50,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:18:50,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:18:50,806 INFO L87 Difference]: Start difference. First operand 742 states and 849 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) [2025-03-04 09:18:51,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:18:51,248 INFO L93 Difference]: Finished difference Result 693 states and 800 transitions. [2025-03-04 09:18:51,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:18:51,249 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 [2025-03-04 09:18:51,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:18:51,252 INFO L225 Difference]: With dead ends: 693 [2025-03-04 09:18:51,252 INFO L226 Difference]: Without dead ends: 693 [2025-03-04 09:18:51,252 INFO L434 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 [2025-03-04 09:18:51,254 INFO L435 NwaCegarLoop]: 466 mSDtfsCounter, 693 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:18:51,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 476 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 09:18:51,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2025-03-04 09:18:51,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2025-03-04 09:18:51,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 415 states have (on average 1.8650602409638555) internal successors, (774), 687 states have internal predecessors, (774), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:18:51,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 800 transitions. [2025-03-04 09:18:51,275 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 800 transitions. Word has length 5 [2025-03-04 09:18:51,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:18:51,275 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 800 transitions. [2025-03-04 09:18:51,275 INFO L472 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) [2025-03-04 09:18:51,275 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 800 transitions. [2025-03-04 09:18:51,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-04 09:18:51,275 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:18:51,276 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 09:18:51,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 09:18:51,276 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr318REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:18:51,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:18:51,277 INFO L85 PathProgramCache]: Analyzing trace with hash 911329465, now seen corresponding path program 1 times [2025-03-04 09:18:51,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:18:51,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011801532] [2025-03-04 09:18:51,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:18:51,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:18:51,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 09:18:51,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 09:18:51,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:18:51,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:18:51,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:18:51,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:18:51,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011801532] [2025-03-04 09:18:51,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011801532] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:18:51,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:18:51,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:18:51,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660153325] [2025-03-04 09:18:51,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:18:51,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:18:51,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:18:51,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:18:51,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:18:51,341 INFO L87 Difference]: Start difference. First operand 693 states and 800 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) [2025-03-04 09:18:51,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:18:51,696 INFO L93 Difference]: Finished difference Result 677 states and 785 transitions. [2025-03-04 09:18:51,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:18:51,697 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 [2025-03-04 09:18:51,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:18:51,699 INFO L225 Difference]: With dead ends: 677 [2025-03-04 09:18:51,699 INFO L226 Difference]: Without dead ends: 677 [2025-03-04 09:18:51,699 INFO L434 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 [2025-03-04 09:18:51,700 INFO L435 NwaCegarLoop]: 601 mSDtfsCounter, 461 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:18:51,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 764 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 09:18:51,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2025-03-04 09:18:51,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 668. [2025-03-04 09:18:51,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 415 states have (on average 1.8048192771084337) internal successors, (749), 662 states have internal predecessors, (749), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:18:51,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 775 transitions. [2025-03-04 09:18:51,710 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 775 transitions. Word has length 5 [2025-03-04 09:18:51,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:18:51,710 INFO L471 AbstractCegarLoop]: Abstraction has 668 states and 775 transitions. [2025-03-04 09:18:51,710 INFO L472 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) [2025-03-04 09:18:51,711 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 775 transitions. [2025-03-04 09:18:51,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-04 09:18:51,711 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:18:51,711 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:18:51,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 09:18:51,711 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr313REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:18:51,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:18:51,712 INFO L85 PathProgramCache]: Analyzing trace with hash -908270537, now seen corresponding path program 1 times [2025-03-04 09:18:51,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:18:51,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365029661] [2025-03-04 09:18:51,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:18:51,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:18:51,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:18:51,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:18:51,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:18:51,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:18:51,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:18:51,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:18:51,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365029661] [2025-03-04 09:18:51,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365029661] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:18:51,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:18:51,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:18:51,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947657324] [2025-03-04 09:18:51,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:18:51,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:18:51,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:18:51,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:18:51,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:18:51,789 INFO L87 Difference]: Start difference. First operand 668 states and 775 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:18:52,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:18:52,298 INFO L93 Difference]: Finished difference Result 694 states and 828 transitions. [2025-03-04 09:18:52,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:18:52,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-04 09:18:52,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:18:52,302 INFO L225 Difference]: With dead ends: 694 [2025-03-04 09:18:52,303 INFO L226 Difference]: Without dead ends: 694 [2025-03-04 09:18:52,303 INFO L434 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 [2025-03-04 09:18:52,305 INFO L435 NwaCegarLoop]: 442 mSDtfsCounter, 961 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:18:52,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 746 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-04 09:18:52,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2025-03-04 09:18:52,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 645. [2025-03-04 09:18:52,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 415 states have (on average 1.7493975903614458) internal successors, (726), 639 states have internal predecessors, (726), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:18:52,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 752 transitions. [2025-03-04 09:18:52,321 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 752 transitions. Word has length 10 [2025-03-04 09:18:52,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:18:52,321 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 752 transitions. [2025-03-04 09:18:52,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:18:52,321 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 752 transitions. [2025-03-04 09:18:52,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-04 09:18:52,322 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:18:52,322 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:18:52,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 09:18:52,322 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr314REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:18:52,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:18:52,323 INFO L85 PathProgramCache]: Analyzing trace with hash -908270536, now seen corresponding path program 1 times [2025-03-04 09:18:52,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:18:52,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315564264] [2025-03-04 09:18:52,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:18:52,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:18:52,333 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:18:52,343 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:18:52,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:18:52,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:18:52,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:18:52,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:18:52,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315564264] [2025-03-04 09:18:52,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315564264] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:18:52,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:18:52,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:18:52,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067851514] [2025-03-04 09:18:52,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:18:52,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:18:52,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:18:52,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:18:52,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:18:52,389 INFO L87 Difference]: Start difference. First operand 645 states and 752 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:18:52,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:18:52,433 INFO L93 Difference]: Finished difference Result 570 states and 649 transitions. [2025-03-04 09:18:52,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:18:52,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-04 09:18:52,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:18:52,437 INFO L225 Difference]: With dead ends: 570 [2025-03-04 09:18:52,437 INFO L226 Difference]: Without dead ends: 570 [2025-03-04 09:18:52,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:18:52,439 INFO L435 NwaCegarLoop]: 624 mSDtfsCounter, 60 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:18:52,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1195 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:18:52,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2025-03-04 09:18:52,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2025-03-04 09:18:52,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 352 states have (on average 1.7698863636363635) internal successors, (623), 564 states have internal predecessors, (623), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:18:52,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 649 transitions. [2025-03-04 09:18:52,450 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 649 transitions. Word has length 10 [2025-03-04 09:18:52,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:18:52,450 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 649 transitions. [2025-03-04 09:18:52,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:18:52,450 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 649 transitions. [2025-03-04 09:18:52,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-04 09:18:52,451 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:18:52,451 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:18:52,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 09:18:52,451 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr290REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:18:52,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:18:52,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1908260213, now seen corresponding path program 1 times [2025-03-04 09:18:52,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:18:52,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7475684] [2025-03-04 09:18:52,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:18:52,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:18:52,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 09:18:52,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 09:18:52,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:18:52,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:18:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:18:52,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:18:52,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7475684] [2025-03-04 09:18:52,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7475684] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:18:52,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:18:52,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:18:52,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279858381] [2025-03-04 09:18:52,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:18:52,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:18:52,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:18:52,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:18:52,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:18:52,533 INFO L87 Difference]: Start difference. First operand 570 states and 649 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:18:52,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:18:52,637 INFO L93 Difference]: Finished difference Result 552 states and 624 transitions. [2025-03-04 09:18:52,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:18:52,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-03-04 09:18:52,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:18:52,640 INFO L225 Difference]: With dead ends: 552 [2025-03-04 09:18:52,640 INFO L226 Difference]: Without dead ends: 552 [2025-03-04 09:18:52,640 INFO L434 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 [2025-03-04 09:18:52,642 INFO L435 NwaCegarLoop]: 589 mSDtfsCounter, 41 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:18:52,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1739 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 09:18:52,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2025-03-04 09:18:52,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 549. [2025-03-04 09:18:52,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 338 states have (on average 1.7603550295857988) internal successors, (595), 543 states have internal predecessors, (595), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:18:52,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 621 transitions. [2025-03-04 09:18:52,664 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 621 transitions. Word has length 11 [2025-03-04 09:18:52,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:18:52,664 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 621 transitions. [2025-03-04 09:18:52,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:18:52,664 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 621 transitions. [2025-03-04 09:18:52,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-04 09:18:52,666 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:18:52,666 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:18:52,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 09:18:52,666 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr276REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:18:52,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:18:52,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1316252811, now seen corresponding path program 1 times [2025-03-04 09:18:52,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:18:52,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272597895] [2025-03-04 09:18:52,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:18:52,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:18:52,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-04 09:18:52,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 09:18:52,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:18:52,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:18:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:18:52,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:18:52,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272597895] [2025-03-04 09:18:52,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272597895] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:18:52,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:18:52,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:18:52,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003179336] [2025-03-04 09:18:52,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:18:52,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:18:52,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:18:52,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:18:52,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:18:52,822 INFO L87 Difference]: Start difference. First operand 549 states and 621 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:18:53,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:18:53,254 INFO L93 Difference]: Finished difference Result 603 states and 703 transitions. [2025-03-04 09:18:53,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:18:53,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 [2025-03-04 09:18:53,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:18:53,256 INFO L225 Difference]: With dead ends: 603 [2025-03-04 09:18:53,256 INFO L226 Difference]: Without dead ends: 603 [2025-03-04 09:18:53,257 INFO L434 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 [2025-03-04 09:18:53,257 INFO L435 NwaCegarLoop]: 494 mSDtfsCounter, 467 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:18:53,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 976 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 09:18:53,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2025-03-04 09:18:53,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 545. [2025-03-04 09:18:53,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 338 states have (on average 1.7485207100591715) internal successors, (591), 539 states have internal predecessors, (591), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:18:53,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 617 transitions. [2025-03-04 09:18:53,265 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 617 transitions. Word has length 25 [2025-03-04 09:18:53,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:18:53,265 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 617 transitions. [2025-03-04 09:18:53,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:18:53,265 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 617 transitions. [2025-03-04 09:18:53,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-03-04 09:18:53,266 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:18:53,266 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:18:53,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 09:18:53,266 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr261REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:18:53,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:18:53,266 INFO L85 PathProgramCache]: Analyzing trace with hash -2086518113, now seen corresponding path program 1 times [2025-03-04 09:18:53,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:18:53,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398473529] [2025-03-04 09:18:53,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:18:53,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:18:53,282 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-04 09:18:53,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-04 09:18:53,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:18:53,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:18:53,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:18:53,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:18:53,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398473529] [2025-03-04 09:18:53,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398473529] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:18:53,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:18:53,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:18:53,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415936951] [2025-03-04 09:18:53,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:18:53,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:18:53,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:18:53,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:18:53,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:18:53,386 INFO L87 Difference]: Start difference. First operand 545 states and 617 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:18:53,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:18:53,446 INFO L93 Difference]: Finished difference Result 545 states and 613 transitions. [2025-03-04 09:18:53,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:18:53,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2025-03-04 09:18:53,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:18:53,449 INFO L225 Difference]: With dead ends: 545 [2025-03-04 09:18:53,449 INFO L226 Difference]: Without dead ends: 545 [2025-03-04 09:18:53,449 INFO L434 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 [2025-03-04 09:18:53,449 INFO L435 NwaCegarLoop]: 584 mSDtfsCounter, 21 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:18:53,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1721 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:18:53,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2025-03-04 09:18:53,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2025-03-04 09:18:53,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 338 states have (on average 1.7366863905325445) internal successors, (587), 539 states have internal predecessors, (587), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:18:53,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 613 transitions. [2025-03-04 09:18:53,460 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 613 transitions. Word has length 59 [2025-03-04 09:18:53,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:18:53,460 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 613 transitions. [2025-03-04 09:18:53,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:18:53,461 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 613 transitions. [2025-03-04 09:18:53,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-04 09:18:53,461 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:18:53,462 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:18:53,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-04 09:18:53,462 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr261REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:18:53,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:18:53,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1498880281, now seen corresponding path program 1 times [2025-03-04 09:18:53,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:18:53,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644760255] [2025-03-04 09:18:53,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:18:53,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:18:53,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-04 09:18:53,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-04 09:18:53,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:18:53,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:18:53,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:18:53,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:18:53,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644760255] [2025-03-04 09:18:53,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644760255] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:18:53,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:18:53,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:18:53,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130907107] [2025-03-04 09:18:53,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:18:53,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:18:53,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:18:53,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:18:53,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:18:53,571 INFO L87 Difference]: Start difference. First operand 545 states and 613 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:18:53,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:18:53,628 INFO L93 Difference]: Finished difference Result 635 states and 730 transitions. [2025-03-04 09:18:53,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:18:53,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-03-04 09:18:53,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:18:53,631 INFO L225 Difference]: With dead ends: 635 [2025-03-04 09:18:53,631 INFO L226 Difference]: Without dead ends: 635 [2025-03-04 09:18:53,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:18:53,632 INFO L435 NwaCegarLoop]: 598 mSDtfsCounter, 54 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:18:53,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1168 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:18:53,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2025-03-04 09:18:53,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2025-03-04 09:18:53,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 428 states have (on average 1.644859813084112) internal successors, (704), 629 states have internal predecessors, (704), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:18:53,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 730 transitions. [2025-03-04 09:18:53,643 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 730 transitions. Word has length 67 [2025-03-04 09:18:53,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:18:53,643 INFO L471 AbstractCegarLoop]: Abstraction has 635 states and 730 transitions. [2025-03-04 09:18:53,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:18:53,644 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 730 transitions. [2025-03-04 09:18:53,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-04 09:18:53,644 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:18:53,645 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:18:53,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-04 09:18:53,645 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr225REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:18:53,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:18:53,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1223565, now seen corresponding path program 1 times [2025-03-04 09:18:53,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:18:53,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178384455] [2025-03-04 09:18:53,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:18:53,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:18:53,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-04 09:18:53,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-04 09:18:53,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:18:53,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:18:53,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:18:53,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:18:53,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178384455] [2025-03-04 09:18:53,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178384455] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:18:53,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:18:53,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:18:53,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953478305] [2025-03-04 09:18:53,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:18:53,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:18:53,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:18:53,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:18:53,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:18:53,946 INFO L87 Difference]: Start difference. First operand 635 states and 730 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:18:54,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:18:54,403 INFO L93 Difference]: Finished difference Result 634 states and 729 transitions. [2025-03-04 09:18:54,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:18:54,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2025-03-04 09:18:54,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:18:54,406 INFO L225 Difference]: With dead ends: 634 [2025-03-04 09:18:54,406 INFO L226 Difference]: Without dead ends: 634 [2025-03-04 09:18:54,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:18:54,407 INFO L435 NwaCegarLoop]: 594 mSDtfsCounter, 2 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:18:54,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1666 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 09:18:54,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2025-03-04 09:18:54,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2025-03-04 09:18:54,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 428 states have (on average 1.6425233644859814) internal successors, (703), 628 states have internal predecessors, (703), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:18:54,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 729 transitions. [2025-03-04 09:18:54,421 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 729 transitions. Word has length 75 [2025-03-04 09:18:54,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:18:54,421 INFO L471 AbstractCegarLoop]: Abstraction has 634 states and 729 transitions. [2025-03-04 09:18:54,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:18:54,421 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 729 transitions. [2025-03-04 09:18:54,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-04 09:18:54,423 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:18:54,423 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:18:54,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-04 09:18:54,424 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr226REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:18:54,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:18:54,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1223564, now seen corresponding path program 1 times [2025-03-04 09:18:54,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:18:54,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160483575] [2025-03-04 09:18:54,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:18:54,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:18:54,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-04 09:18:54,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-04 09:18:54,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:18:54,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:18:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:18:54,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:18:54,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160483575] [2025-03-04 09:18:54,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160483575] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:18:54,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:18:54,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:18:54,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534520933] [2025-03-04 09:18:54,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:18:54,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:18:54,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:18:54,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:18:54,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:18:54,777 INFO L87 Difference]: Start difference. First operand 634 states and 729 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:18:55,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:18:55,251 INFO L93 Difference]: Finished difference Result 633 states and 728 transitions. [2025-03-04 09:18:55,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:18:55,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2025-03-04 09:18:55,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:18:55,253 INFO L225 Difference]: With dead ends: 633 [2025-03-04 09:18:55,253 INFO L226 Difference]: Without dead ends: 633 [2025-03-04 09:18:55,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:18:55,254 INFO L435 NwaCegarLoop]: 594 mSDtfsCounter, 1 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:18:55,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1627 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 09:18:55,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2025-03-04 09:18:55,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2025-03-04 09:18:55,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 427 states have (on average 1.6440281030444965) internal successors, (702), 627 states have internal predecessors, (702), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:18:55,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 728 transitions. [2025-03-04 09:18:55,262 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 728 transitions. Word has length 75 [2025-03-04 09:18:55,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:18:55,263 INFO L471 AbstractCegarLoop]: Abstraction has 633 states and 728 transitions. [2025-03-04 09:18:55,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:18:55,263 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 728 transitions. [2025-03-04 09:18:55,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-04 09:18:55,265 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:18:55,265 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:18:55,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-04 09:18:55,265 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr221REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:18:55,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:18:55,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1950663504, now seen corresponding path program 1 times [2025-03-04 09:18:55,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:18:55,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187605016] [2025-03-04 09:18:55,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:18:55,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:18:55,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-04 09:18:55,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-04 09:18:55,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:18:55,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:18:55,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:18:55,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:18:55,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187605016] [2025-03-04 09:18:55,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187605016] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:18:55,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:18:55,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:18:55,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864299218] [2025-03-04 09:18:55,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:18:55,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:18:55,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:18:55,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:18:55,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:18:55,453 INFO L87 Difference]: Start difference. First operand 633 states and 728 transitions. Second operand has 7 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:18:56,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:18:56,041 INFO L93 Difference]: Finished difference Result 645 states and 743 transitions. [2025-03-04 09:18:56,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:18:56,042 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2025-03-04 09:18:56,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:18:56,044 INFO L225 Difference]: With dead ends: 645 [2025-03-04 09:18:56,044 INFO L226 Difference]: Without dead ends: 645 [2025-03-04 09:18:56,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-04 09:18:56,044 INFO L435 NwaCegarLoop]: 580 mSDtfsCounter, 12 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2479 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:18:56,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2479 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-04 09:18:56,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2025-03-04 09:18:56,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 639. [2025-03-04 09:18:56,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 432 states have (on average 1.6412037037037037) internal successors, (709), 632 states have internal predecessors, (709), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (16), 5 states have call predecessors, (16), 13 states have call successors, (16) [2025-03-04 09:18:56,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 738 transitions. [2025-03-04 09:18:56,053 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 738 transitions. Word has length 83 [2025-03-04 09:18:56,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:18:56,053 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 738 transitions. [2025-03-04 09:18:56,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:18:56,054 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 738 transitions. [2025-03-04 09:18:56,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-04 09:18:56,054 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:18:56,054 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:18:56,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-04 09:18:56,055 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr222REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:18:56,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:18:56,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1950663505, now seen corresponding path program 1 times [2025-03-04 09:18:56,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:18:56,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094246294] [2025-03-04 09:18:56,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:18:56,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:18:56,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-04 09:18:56,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-04 09:18:56,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:18:56,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:18:56,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:18:56,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:18:56,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094246294] [2025-03-04 09:18:56,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094246294] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:18:56,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:18:56,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 09:18:56,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116297281] [2025-03-04 09:18:56,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:18:56,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:18:56,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:18:56,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:18:56,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:18:56,450 INFO L87 Difference]: Start difference. First operand 639 states and 738 transitions. Second operand has 6 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:18:57,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:18:57,032 INFO L93 Difference]: Finished difference Result 639 states and 737 transitions. [2025-03-04 09:18:57,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:18:57,033 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2025-03-04 09:18:57,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:18:57,035 INFO L225 Difference]: With dead ends: 639 [2025-03-04 09:18:57,035 INFO L226 Difference]: Without dead ends: 639 [2025-03-04 09:18:57,035 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:18:57,035 INFO L435 NwaCegarLoop]: 584 mSDtfsCounter, 7 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2028 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:18:57,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2028 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-04 09:18:57,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2025-03-04 09:18:57,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 639. [2025-03-04 09:18:57,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 432 states have (on average 1.6388888888888888) internal successors, (708), 632 states have internal predecessors, (708), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (16), 5 states have call predecessors, (16), 13 states have call successors, (16) [2025-03-04 09:18:57,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 737 transitions. [2025-03-04 09:18:57,043 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 737 transitions. Word has length 83 [2025-03-04 09:18:57,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:18:57,043 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 737 transitions. [2025-03-04 09:18:57,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:18:57,044 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 737 transitions. [2025-03-04 09:18:57,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-03-04 09:18:57,044 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:18:57,044 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:18:57,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-04 09:18:57,044 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr221REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:18:57,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:18:57,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1503479810, now seen corresponding path program 1 times [2025-03-04 09:18:57,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:18:57,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303153472] [2025-03-04 09:18:57,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:18:57,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:18:57,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-04 09:18:57,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-04 09:18:57,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:18:57,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:18:57,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:18:57,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:18:57,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303153472] [2025-03-04 09:18:57,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303153472] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:18:57,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483613094] [2025-03-04 09:18:57,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:18:57,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:18:57,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:18:57,384 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:18:57,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 09:18:57,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-04 09:18:57,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-04 09:18:57,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:18:57,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:18:57,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-04 09:18:57,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:18:57,629 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:18:57,632 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 [2025-03-04 09:18:57,646 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 19 treesize of output 1 [2025-03-04 09:18:57,704 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:18:57,705 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 42 treesize of output 41 [2025-03-04 09:18:57,731 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 31 treesize of output 13 [2025-03-04 09:18:57,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:18:57,734 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:18:57,775 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2025-03-04 09:18:57,775 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 21 treesize of output 20 [2025-03-04 09:18:57,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483613094] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:18:57,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:18:57,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2025-03-04 09:18:57,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733909181] [2025-03-04 09:18:57,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:18:57,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 09:18:57,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:18:57,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 09:18:57,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=170, Unknown=5, NotChecked=0, Total=210 [2025-03-04 09:18:57,809 INFO L87 Difference]: Start difference. First operand 639 states and 737 transitions. Second operand has 14 states, 12 states have (on average 8.083333333333334) internal successors, (97), 13 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:18:59,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:18:59,222 INFO L93 Difference]: Finished difference Result 638 states and 736 transitions. [2025-03-04 09:18:59,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 09:18:59,222 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 8.083333333333334) internal successors, (97), 13 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 84 [2025-03-04 09:18:59,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:18:59,224 INFO L225 Difference]: With dead ends: 638 [2025-03-04 09:18:59,224 INFO L226 Difference]: Without dead ends: 638 [2025-03-04 09:18:59,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=372, Unknown=6, NotChecked=0, Total=462 [2025-03-04 09:18:59,225 INFO L435 NwaCegarLoop]: 342 mSDtfsCounter, 515 mSDsluCounter, 3095 mSDsCounter, 0 mSdLazyCounter, 3251 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 3437 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 3251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:18:59,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 3437 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 3251 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-04 09:18:59,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2025-03-04 09:18:59,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2025-03-04 09:18:59,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 432 states have (on average 1.6365740740740742) internal successors, (707), 631 states have internal predecessors, (707), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (16), 5 states have call predecessors, (16), 13 states have call successors, (16) [2025-03-04 09:18:59,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 736 transitions. [2025-03-04 09:18:59,232 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 736 transitions. Word has length 84 [2025-03-04 09:18:59,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:18:59,232 INFO L471 AbstractCegarLoop]: Abstraction has 638 states and 736 transitions. [2025-03-04 09:18:59,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 8.083333333333334) internal successors, (97), 13 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:18:59,233 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 736 transitions. [2025-03-04 09:18:59,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-03-04 09:18:59,233 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:18:59,233 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:18:59,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 09:18:59,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-04 09:18:59,434 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr222REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:18:59,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:18:59,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1503479809, now seen corresponding path program 1 times [2025-03-04 09:18:59,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:18:59,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888158668] [2025-03-04 09:18:59,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:18:59,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:18:59,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-04 09:18:59,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-04 09:18:59,462 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:18:59,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:18:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:18:59,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:18:59,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888158668] [2025-03-04 09:18:59,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888158668] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:18:59,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035275213] [2025-03-04 09:18:59,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:18:59,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:18:59,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:18:59,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:18:59,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 09:18:59,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-04 09:19:00,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-04 09:19:00,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:00,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:00,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-03-04 09:19:00,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:00,116 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:19:00,117 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 [2025-03-04 09:19:00,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2025-03-04 09:19:00,131 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 13 treesize of output 9 [2025-03-04 09:19:00,136 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 19 treesize of output 1 [2025-03-04 09:19:00,187 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 22 treesize of output 10 [2025-03-04 09:19:00,190 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 9 treesize of output 3 [2025-03-04 09:19:00,268 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:00,269 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 62 treesize of output 57 [2025-03-04 09:19:00,272 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 30 treesize of output 13 [2025-03-04 09:19:00,293 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 31 treesize of output 13 [2025-03-04 09:19:00,298 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 9 treesize of output 3 [2025-03-04 09:19:00,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:00,300 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:19:00,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035275213] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:19:00,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:19:00,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 14 [2025-03-04 09:19:00,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557880882] [2025-03-04 09:19:00,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:19:00,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-04 09:19:00,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:19:00,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-04 09:19:00,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=245, Unknown=9, NotChecked=0, Total=306 [2025-03-04 09:19:00,411 INFO L87 Difference]: Start difference. First operand 638 states and 736 transitions. Second operand has 15 states, 12 states have (on average 8.583333333333334) internal successors, (103), 15 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 09:19:01,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:01,750 INFO L93 Difference]: Finished difference Result 645 states and 743 transitions. [2025-03-04 09:19:01,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 09:19:01,751 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 8.583333333333334) internal successors, (103), 15 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 84 [2025-03-04 09:19:01,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:01,754 INFO L225 Difference]: With dead ends: 645 [2025-03-04 09:19:01,754 INFO L226 Difference]: Without dead ends: 645 [2025-03-04 09:19:01,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=372, Unknown=9, NotChecked=0, Total=462 [2025-03-04 09:19:01,755 INFO L435 NwaCegarLoop]: 344 mSDtfsCounter, 496 mSDsluCounter, 2127 mSDsCounter, 0 mSdLazyCounter, 3022 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 3050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:01,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 2471 Invalid, 3050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3022 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-04 09:19:01,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2025-03-04 09:19:01,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 636. [2025-03-04 09:19:01,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 431 states have (on average 1.6357308584686774) internal successors, (705), 629 states have internal predecessors, (705), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:19:01,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 731 transitions. [2025-03-04 09:19:01,765 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 731 transitions. Word has length 84 [2025-03-04 09:19:01,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:01,766 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 731 transitions. [2025-03-04 09:19:01,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 8.583333333333334) internal successors, (103), 15 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 09:19:01,766 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 731 transitions. [2025-03-04 09:19:01,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-04 09:19:01,767 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:01,767 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:01,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 09:19:01,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-04 09:19:01,970 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr217REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:19:01,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:01,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1309427199, now seen corresponding path program 1 times [2025-03-04 09:19:01,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:19:01,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572541376] [2025-03-04 09:19:01,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:01,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:19:01,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-04 09:19:02,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-04 09:19:02,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:02,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:02,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:02,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:19:02,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572541376] [2025-03-04 09:19:02,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572541376] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:19:02,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:19:02,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-04 09:19:02,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847296223] [2025-03-04 09:19:02,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:19:02,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 09:19:02,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:19:02,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 09:19:02,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2025-03-04 09:19:02,324 INFO L87 Difference]: Start difference. First operand 636 states and 731 transitions. Second operand has 14 states, 12 states have (on average 7.0) internal successors, (84), 13 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:19:03,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:03,292 INFO L93 Difference]: Finished difference Result 649 states and 747 transitions. [2025-03-04 09:19:03,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-04 09:19:03,292 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.0) internal successors, (84), 13 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2025-03-04 09:19:03,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:03,294 INFO L225 Difference]: With dead ends: 649 [2025-03-04 09:19:03,294 INFO L226 Difference]: Without dead ends: 649 [2025-03-04 09:19:03,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2025-03-04 09:19:03,295 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 502 mSDsluCounter, 2453 mSDsCounter, 0 mSdLazyCounter, 2687 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:03,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 2794 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2687 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-04 09:19:03,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2025-03-04 09:19:03,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 645. [2025-03-04 09:19:03,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 439 states have (on average 1.6287015945330297) internal successors, (715), 637 states have internal predecessors, (715), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-04 09:19:03,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 742 transitions. [2025-03-04 09:19:03,302 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 742 transitions. Word has length 86 [2025-03-04 09:19:03,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:03,303 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 742 transitions. [2025-03-04 09:19:03,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.0) internal successors, (84), 13 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:19:03,303 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 742 transitions. [2025-03-04 09:19:03,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-04 09:19:03,303 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:03,303 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:03,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-04 09:19:03,303 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr218REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:19:03,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:03,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1309427200, now seen corresponding path program 1 times [2025-03-04 09:19:03,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:19:03,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733228154] [2025-03-04 09:19:03,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:03,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:19:03,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-04 09:19:03,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-04 09:19:03,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:03,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:03,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:03,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:19:03,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733228154] [2025-03-04 09:19:03,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733228154] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:19:03,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:19:03,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-04 09:19:03,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88564847] [2025-03-04 09:19:03,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:19:03,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 09:19:03,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:19:03,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 09:19:03,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-04 09:19:03,777 INFO L87 Difference]: Start difference. First operand 645 states and 742 transitions. Second operand has 11 states, 10 states have (on average 8.4) internal successors, (84), 11 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:19:04,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:04,761 INFO L93 Difference]: Finished difference Result 648 states and 746 transitions. [2025-03-04 09:19:04,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 09:19:04,762 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.4) internal successors, (84), 11 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2025-03-04 09:19:04,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:04,764 INFO L225 Difference]: With dead ends: 648 [2025-03-04 09:19:04,764 INFO L226 Difference]: Without dead ends: 648 [2025-03-04 09:19:04,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2025-03-04 09:19:04,764 INFO L435 NwaCegarLoop]: 345 mSDtfsCounter, 516 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 2228 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 2250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:04,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 1960 Invalid, 2250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2228 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-04 09:19:04,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2025-03-04 09:19:04,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 645. [2025-03-04 09:19:04,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 439 states have (on average 1.6264236902050113) internal successors, (714), 637 states have internal predecessors, (714), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-04 09:19:04,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 741 transitions. [2025-03-04 09:19:04,774 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 741 transitions. Word has length 86 [2025-03-04 09:19:04,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:04,774 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 741 transitions. [2025-03-04 09:19:04,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.4) internal successors, (84), 11 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:19:04,775 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 741 transitions. [2025-03-04 09:19:04,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-04 09:19:04,775 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:04,775 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:04,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-04 09:19:04,775 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr217REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:19:04,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:04,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2047404689, now seen corresponding path program 1 times [2025-03-04 09:19:04,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:19:04,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359281864] [2025-03-04 09:19:04,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:04,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:19:04,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-04 09:19:04,800 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-04 09:19:04,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:04,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:05,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:05,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:19:05,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359281864] [2025-03-04 09:19:05,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359281864] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:19:05,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261970077] [2025-03-04 09:19:05,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:05,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:05,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:05,110 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:19:05,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 09:19:05,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-04 09:19:05,265 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-04 09:19:05,266 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:05,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:05,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-04 09:19:05,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:05,276 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 [2025-03-04 09:19:05,346 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:19:05,346 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 [2025-03-04 09:19:05,352 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 19 treesize of output 1 [2025-03-04 09:19:05,415 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:05,415 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 42 treesize of output 41 [2025-03-04 09:19:05,464 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:05,464 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 42 treesize of output 41 [2025-03-04 09:19:05,473 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 31 treesize of output 13 [2025-03-04 09:19:05,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:05,476 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:19:05,553 INFO L349 Elim1Store]: treesize reduction 5, result has 82.8 percent of original size [2025-03-04 09:19:05,553 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 33 treesize of output 32 [2025-03-04 09:19:05,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261970077] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:19:05,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:19:05,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 16 [2025-03-04 09:19:05,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275375719] [2025-03-04 09:19:05,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:19:05,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-04 09:19:05,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:19:05,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-04 09:19:05,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=306, Unknown=18, NotChecked=0, Total=380 [2025-03-04 09:19:05,585 INFO L87 Difference]: Start difference. First operand 645 states and 741 transitions. Second operand has 17 states, 15 states have (on average 8.666666666666666) internal successors, (130), 17 states have internal predecessors, (130), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:19:06,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:06,874 INFO L93 Difference]: Finished difference Result 647 states and 745 transitions. [2025-03-04 09:19:06,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 09:19:06,874 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 8.666666666666666) internal successors, (130), 17 states have internal predecessors, (130), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 87 [2025-03-04 09:19:06,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:06,876 INFO L225 Difference]: With dead ends: 647 [2025-03-04 09:19:06,876 INFO L226 Difference]: Without dead ends: 647 [2025-03-04 09:19:06,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=570, Unknown=19, NotChecked=0, Total=702 [2025-03-04 09:19:06,876 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 494 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 3523 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 3749 SdHoareTripleChecker+Invalid, 3546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 3523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:06,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 3749 Invalid, 3546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 3523 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-04 09:19:06,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2025-03-04 09:19:06,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 644. [2025-03-04 09:19:06,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 439 states have (on average 1.6241457858769932) internal successors, (713), 636 states have internal predecessors, (713), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-04 09:19:06,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 740 transitions. [2025-03-04 09:19:06,883 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 740 transitions. Word has length 87 [2025-03-04 09:19:06,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:06,883 INFO L471 AbstractCegarLoop]: Abstraction has 644 states and 740 transitions. [2025-03-04 09:19:06,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 8.666666666666666) internal successors, (130), 17 states have internal predecessors, (130), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:19:06,884 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 740 transitions. [2025-03-04 09:19:06,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-04 09:19:06,884 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:06,884 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:06,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 09:19:07,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-04 09:19:07,085 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr218REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:19:07,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:07,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2047404690, now seen corresponding path program 1 times [2025-03-04 09:19:07,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:19:07,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623063450] [2025-03-04 09:19:07,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:07,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:19:07,102 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-04 09:19:07,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-04 09:19:07,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:07,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:07,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:07,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:19:07,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623063450] [2025-03-04 09:19:07,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623063450] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:19:07,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377737093] [2025-03-04 09:19:07,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:07,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:07,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:07,583 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:19:07,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 09:19:07,688 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-04 09:19:07,728 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-04 09:19:07,728 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:07,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:07,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-03-04 09:19:07,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:07,740 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 [2025-03-04 09:19:07,820 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:19:07,820 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 [2025-03-04 09:19:07,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2025-03-04 09:19:07,841 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 19 treesize of output 1 [2025-03-04 09:19:07,844 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 13 treesize of output 9 [2025-03-04 09:19:07,889 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 22 treesize of output 10 [2025-03-04 09:19:07,894 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 9 treesize of output 3 [2025-03-04 09:19:07,982 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:07,982 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 62 treesize of output 57 [2025-03-04 09:19:07,988 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 30 treesize of output 13 [2025-03-04 09:19:08,041 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:08,041 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 62 treesize of output 57 [2025-03-04 09:19:08,047 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 30 treesize of output 13 [2025-03-04 09:19:08,059 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 31 treesize of output 13 [2025-03-04 09:19:08,063 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 9 treesize of output 3 [2025-03-04 09:19:08,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:08,066 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:19:08,110 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_973 (Array Int Int)) (v_ArrVal_972 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_973) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_972) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_973 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_973) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))))) is different from false [2025-03-04 09:19:08,124 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_973 (Array Int Int))) (<= 0 (+ 4 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_973) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_973 (Array Int Int)) (v_ArrVal_972 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_973) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_972) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2025-03-04 09:19:08,166 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_979 (Array Int Int)) (v_ArrVal_978 (Array Int Int)) (v_ArrVal_973 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_978) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_979) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_973) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))) (forall ((v_ArrVal_979 (Array Int Int)) (v_ArrVal_978 (Array Int Int)) (v_ArrVal_973 (Array Int Int)) (v_ArrVal_972 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_979))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_978) .cse1 v_ArrVal_973) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 8) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_972) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))) is different from false [2025-03-04 09:19:08,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377737093] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:19:08,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:19:08,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 15 [2025-03-04 09:19:08,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584863092] [2025-03-04 09:19:08,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:19:08,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-04 09:19:08,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:19:08,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-04 09:19:08,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=256, Unknown=3, NotChecked=102, Total=420 [2025-03-04 09:19:08,171 INFO L87 Difference]: Start difference. First operand 644 states and 740 transitions. Second operand has 16 states, 14 states have (on average 9.214285714285714) internal successors, (129), 16 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:19:09,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:09,035 INFO L93 Difference]: Finished difference Result 646 states and 744 transitions. [2025-03-04 09:19:09,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-04 09:19:09,036 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 9.214285714285714) internal successors, (129), 16 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 87 [2025-03-04 09:19:09,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:09,037 INFO L225 Difference]: With dead ends: 646 [2025-03-04 09:19:09,037 INFO L226 Difference]: Without dead ends: 646 [2025-03-04 09:19:09,038 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=420, Unknown=3, NotChecked=132, Total=650 [2025-03-04 09:19:09,038 INFO L435 NwaCegarLoop]: 343 mSDtfsCounter, 497 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 2064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:09,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1687 Invalid, 2064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2027 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-04 09:19:09,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2025-03-04 09:19:09,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 634. [2025-03-04 09:19:09,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 431 states have (on average 1.631090487238979) internal successors, (703), 627 states have internal predecessors, (703), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:19:09,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 729 transitions. [2025-03-04 09:19:09,045 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 729 transitions. Word has length 87 [2025-03-04 09:19:09,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:09,045 INFO L471 AbstractCegarLoop]: Abstraction has 634 states and 729 transitions. [2025-03-04 09:19:09,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 9.214285714285714) internal successors, (129), 16 states have internal predecessors, (129), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:19:09,045 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 729 transitions. [2025-03-04 09:19:09,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-04 09:19:09,046 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:09,046 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:09,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-04 09:19:09,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:09,246 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr213REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:19:09,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:09,247 INFO L85 PathProgramCache]: Analyzing trace with hash -2041776695, now seen corresponding path program 1 times [2025-03-04 09:19:09,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:19:09,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112869802] [2025-03-04 09:19:09,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:09,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:19:09,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-04 09:19:09,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-04 09:19:09,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:09,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:09,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:19:09,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112869802] [2025-03-04 09:19:09,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112869802] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:19:09,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:19:09,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-04 09:19:09,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586402201] [2025-03-04 09:19:09,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:19:09,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-04 09:19:09,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:19:09,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-04 09:19:09,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2025-03-04 09:19:09,615 INFO L87 Difference]: Start difference. First operand 634 states and 729 transitions. Second operand has 15 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 14 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:19:10,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:10,745 INFO L93 Difference]: Finished difference Result 650 states and 748 transitions. [2025-03-04 09:19:10,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 09:19:10,745 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 14 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2025-03-04 09:19:10,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:10,747 INFO L225 Difference]: With dead ends: 650 [2025-03-04 09:19:10,747 INFO L226 Difference]: Without dead ends: 650 [2025-03-04 09:19:10,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2025-03-04 09:19:10,748 INFO L435 NwaCegarLoop]: 340 mSDtfsCounter, 518 mSDsluCounter, 3048 mSDsCounter, 0 mSdLazyCounter, 3231 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 3388 SdHoareTripleChecker+Invalid, 3254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 3231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:10,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 3388 Invalid, 3254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 3231 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-04 09:19:10,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2025-03-04 09:19:10,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 646. [2025-03-04 09:19:10,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 442 states have (on average 1.6199095022624435) internal successors, (716), 638 states have internal predecessors, (716), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-04 09:19:10,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 743 transitions. [2025-03-04 09:19:10,754 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 743 transitions. Word has length 89 [2025-03-04 09:19:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:10,755 INFO L471 AbstractCegarLoop]: Abstraction has 646 states and 743 transitions. [2025-03-04 09:19:10,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 14 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:19:10,755 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 743 transitions. [2025-03-04 09:19:10,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-04 09:19:10,755 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:10,755 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:10,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-04 09:19:10,755 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr214REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:19:10,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:10,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2041776694, now seen corresponding path program 1 times [2025-03-04 09:19:10,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:19:10,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355580042] [2025-03-04 09:19:10,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:10,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:19:10,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-04 09:19:10,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-04 09:19:10,778 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:10,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:11,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:11,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:19:11,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355580042] [2025-03-04 09:19:11,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355580042] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:19:11,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:19:11,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-04 09:19:11,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619406339] [2025-03-04 09:19:11,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:19:11,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 09:19:11,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:19:11,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 09:19:11,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-03-04 09:19:11,220 INFO L87 Difference]: Start difference. First operand 646 states and 743 transitions. Second operand has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 12 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:19:12,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:12,574 INFO L93 Difference]: Finished difference Result 649 states and 747 transitions. [2025-03-04 09:19:12,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:19:12,574 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 12 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2025-03-04 09:19:12,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:12,576 INFO L225 Difference]: With dead ends: 649 [2025-03-04 09:19:12,576 INFO L226 Difference]: Without dead ends: 649 [2025-03-04 09:19:12,576 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2025-03-04 09:19:12,577 INFO L435 NwaCegarLoop]: 344 mSDtfsCounter, 516 mSDsluCounter, 2322 mSDsCounter, 0 mSdLazyCounter, 3314 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 3336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:12,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 2666 Invalid, 3336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3314 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-04 09:19:12,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2025-03-04 09:19:12,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 646. [2025-03-04 09:19:12,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 442 states have (on average 1.6176470588235294) internal successors, (715), 638 states have internal predecessors, (715), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-04 09:19:12,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 742 transitions. [2025-03-04 09:19:12,584 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 742 transitions. Word has length 89 [2025-03-04 09:19:12,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:12,584 INFO L471 AbstractCegarLoop]: Abstraction has 646 states and 742 transitions. [2025-03-04 09:19:12,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 12 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:19:12,584 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 742 transitions. [2025-03-04 09:19:12,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-04 09:19:12,585 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:12,585 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:12,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-04 09:19:12,586 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr213REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:19:12,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:12,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1403006967, now seen corresponding path program 1 times [2025-03-04 09:19:12,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:19:12,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687791634] [2025-03-04 09:19:12,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:12,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:19:12,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-04 09:19:12,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-04 09:19:12,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:12,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:12,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:12,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:19:12,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687791634] [2025-03-04 09:19:12,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687791634] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:19:12,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251451956] [2025-03-04 09:19:12,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:12,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:12,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:12,927 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:19:12,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 09:19:13,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-04 09:19:13,088 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-04 09:19:13,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:13,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:13,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-04 09:19:13,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:13,099 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 [2025-03-04 09:19:13,172 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:19:13,172 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 [2025-03-04 09:19:13,179 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 19 treesize of output 1 [2025-03-04 09:19:13,240 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:13,240 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 42 treesize of output 41 [2025-03-04 09:19:13,272 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:13,272 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 42 treesize of output 41 [2025-03-04 09:19:13,307 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:13,308 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 42 treesize of output 41 [2025-03-04 09:19:13,320 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 31 treesize of output 13 [2025-03-04 09:19:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:13,322 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:19:13,332 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1253 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1253) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2025-03-04 09:19:13,363 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1253 (Array Int Int)) (v_ArrVal_1252 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1252))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1253)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-04 09:19:13,420 INFO L349 Elim1Store]: treesize reduction 5, result has 90.6 percent of original size [2025-03-04 09:19:13,421 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 57 treesize of output 56 [2025-03-04 09:19:13,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251451956] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:19:13,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:19:13,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 18 [2025-03-04 09:19:13,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127819894] [2025-03-04 09:19:13,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:19:13,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-04 09:19:13,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:19:13,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-04 09:19:13,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=383, Unknown=15, NotChecked=82, Total=552 [2025-03-04 09:19:13,457 INFO L87 Difference]: Start difference. First operand 646 states and 742 transitions. Second operand has 19 states, 17 states have (on average 7.9411764705882355) internal successors, (135), 19 states have internal predecessors, (135), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:19:14,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:14,742 INFO L93 Difference]: Finished difference Result 648 states and 746 transitions. [2025-03-04 09:19:14,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-04 09:19:14,746 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 7.9411764705882355) internal successors, (135), 19 states have internal predecessors, (135), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 90 [2025-03-04 09:19:14,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:14,748 INFO L225 Difference]: With dead ends: 648 [2025-03-04 09:19:14,748 INFO L226 Difference]: Without dead ends: 648 [2025-03-04 09:19:14,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=719, Unknown=15, NotChecked=114, Total=992 [2025-03-04 09:19:14,749 INFO L435 NwaCegarLoop]: 340 mSDtfsCounter, 492 mSDsluCounter, 3353 mSDsCounter, 0 mSdLazyCounter, 3538 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 3693 SdHoareTripleChecker+Invalid, 3573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:14,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 3693 Invalid, 3573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3538 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-04 09:19:14,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2025-03-04 09:19:14,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 645. [2025-03-04 09:19:14,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 442 states have (on average 1.6153846153846154) internal successors, (714), 637 states have internal predecessors, (714), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-04 09:19:14,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 741 transitions. [2025-03-04 09:19:14,759 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 741 transitions. Word has length 90 [2025-03-04 09:19:14,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:14,759 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 741 transitions. [2025-03-04 09:19:14,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 7.9411764705882355) internal successors, (135), 19 states have internal predecessors, (135), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:19:14,759 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 741 transitions. [2025-03-04 09:19:14,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-04 09:19:14,760 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:14,760 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:14,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 09:19:14,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-03-04 09:19:14,960 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr214REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:19:14,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:14,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1403006968, now seen corresponding path program 1 times [2025-03-04 09:19:14,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:19:14,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038073659] [2025-03-04 09:19:14,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:14,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:19:14,976 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-04 09:19:14,986 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-04 09:19:14,986 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:14,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:15,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:15,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:19:15,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038073659] [2025-03-04 09:19:15,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038073659] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:19:15,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946724663] [2025-03-04 09:19:15,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:15,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:15,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:15,451 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:19:15,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 09:19:15,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-04 09:19:15,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-04 09:19:15,608 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:15,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:15,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-04 09:19:15,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:15,617 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 [2025-03-04 09:19:15,699 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:19:15,699 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 [2025-03-04 09:19:15,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2025-03-04 09:19:15,709 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 13 treesize of output 9 [2025-03-04 09:19:15,714 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 19 treesize of output 1 [2025-03-04 09:19:15,753 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 22 treesize of output 10 [2025-03-04 09:19:15,757 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 9 treesize of output 3 [2025-03-04 09:19:15,835 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:15,835 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 62 treesize of output 57 [2025-03-04 09:19:15,840 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 30 treesize of output 13 [2025-03-04 09:19:15,888 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:15,888 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 62 treesize of output 57 [2025-03-04 09:19:15,893 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 30 treesize of output 13 [2025-03-04 09:19:15,939 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:15,939 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 62 treesize of output 57 [2025-03-04 09:19:15,946 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 30 treesize of output 13 [2025-03-04 09:19:15,963 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 31 treesize of output 13 [2025-03-04 09:19:15,967 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 9 treesize of output 3 [2025-03-04 09:19:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:15,969 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:19:16,010 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1408 (Array Int Int)) (v_ArrVal_1407 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1407) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 12) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1408) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1407 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1407) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 8))))) is different from false [2025-03-04 09:19:16,062 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1406 (Array Int Int)) (v_ArrVal_1405 (Array Int Int)) (v_ArrVal_1408 (Array Int Int)) (v_ArrVal_1407 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1406))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ 12 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1405) .cse0 v_ArrVal_1407) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_1408) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1406 (Array Int Int)) (v_ArrVal_1405 (Array Int Int)) (v_ArrVal_1407 (Array Int Int))) (<= 0 (+ 8 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1405) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1406) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1407) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2025-03-04 09:19:16,165 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1406 (Array Int Int)) (v_ArrVal_1405 (Array Int Int)) (v_ArrVal_1414 (Array Int Int)) (v_ArrVal_1413 (Array Int Int)) (v_ArrVal_1407 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1414))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1413) .cse0 v_ArrVal_1405) (select (select (store .cse1 .cse0 v_ArrVal_1406) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1407))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 8))) (forall ((v_ArrVal_1406 (Array Int Int)) (v_ArrVal_1405 (Array Int Int)) (v_ArrVal_1414 (Array Int Int)) (v_ArrVal_1413 (Array Int Int)) (v_ArrVal_1408 (Array Int Int)) (v_ArrVal_1407 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1414))) (let ((.cse3 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse5 (store .cse6 .cse3 v_ArrVal_1406))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1413) .cse3 v_ArrVal_1405) .cse4 v_ArrVal_1407) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 12) (select |c_#length| (select (select (store .cse5 .cse4 v_ArrVal_1408) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))))) is different from false [2025-03-04 09:19:16,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946724663] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:19:16,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:19:16,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 17 [2025-03-04 09:19:16,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16704946] [2025-03-04 09:19:16,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:19:16,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-04 09:19:16,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:19:16,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-04 09:19:16,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=375, Unknown=15, NotChecked=126, Total=600 [2025-03-04 09:19:16,169 INFO L87 Difference]: Start difference. First operand 645 states and 741 transitions. Second operand has 18 states, 16 states have (on average 8.375) internal successors, (134), 18 states have internal predecessors, (134), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:19:17,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:17,231 INFO L93 Difference]: Finished difference Result 647 states and 745 transitions. [2025-03-04 09:19:17,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 09:19:17,232 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 8.375) internal successors, (134), 18 states have internal predecessors, (134), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 90 [2025-03-04 09:19:17,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:17,233 INFO L225 Difference]: With dead ends: 647 [2025-03-04 09:19:17,234 INFO L226 Difference]: Without dead ends: 647 [2025-03-04 09:19:17,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=614, Unknown=15, NotChecked=162, Total=930 [2025-03-04 09:19:17,234 INFO L435 NwaCegarLoop]: 342 mSDtfsCounter, 493 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 2378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:17,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 1972 Invalid, 2378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-04 09:19:17,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2025-03-04 09:19:17,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 632. [2025-03-04 09:19:17,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 431 states have (on average 1.6264501160092808) internal successors, (701), 625 states have internal predecessors, (701), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:19:17,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 727 transitions. [2025-03-04 09:19:17,241 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 727 transitions. Word has length 90 [2025-03-04 09:19:17,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:17,241 INFO L471 AbstractCegarLoop]: Abstraction has 632 states and 727 transitions. [2025-03-04 09:19:17,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 8.375) internal successors, (134), 18 states have internal predecessors, (134), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:19:17,242 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 727 transitions. [2025-03-04 09:19:17,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-04 09:19:17,242 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:17,242 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:17,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-04 09:19:17,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:17,443 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr209REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:19:17,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:17,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1242194280, now seen corresponding path program 1 times [2025-03-04 09:19:17,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:19:17,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551939194] [2025-03-04 09:19:17,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:17,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:19:17,460 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-04 09:19:17,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-04 09:19:17,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:17,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:17,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:17,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:19:17,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551939194] [2025-03-04 09:19:17,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551939194] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:19:17,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:19:17,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-04 09:19:17,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656682606] [2025-03-04 09:19:17,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:19:17,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-04 09:19:17,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:19:17,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-04 09:19:17,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2025-03-04 09:19:17,813 INFO L87 Difference]: Start difference. First operand 632 states and 727 transitions. Second operand has 16 states, 14 states have (on average 6.428571428571429) internal successors, (90), 15 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:19:18,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:18,604 INFO L93 Difference]: Finished difference Result 651 states and 749 transitions. [2025-03-04 09:19:18,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-04 09:19:18,604 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.428571428571429) internal successors, (90), 15 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2025-03-04 09:19:18,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:18,606 INFO L225 Difference]: With dead ends: 651 [2025-03-04 09:19:18,606 INFO L226 Difference]: Without dead ends: 651 [2025-03-04 09:19:18,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2025-03-04 09:19:18,607 INFO L435 NwaCegarLoop]: 339 mSDtfsCounter, 525 mSDsluCounter, 1860 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 2136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:18,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 2199 Invalid, 2136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-04 09:19:18,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2025-03-04 09:19:18,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 647. [2025-03-04 09:19:18,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 445 states have (on average 1.6112359550561797) internal successors, (717), 639 states have internal predecessors, (717), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-04 09:19:18,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 744 transitions. [2025-03-04 09:19:18,615 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 744 transitions. Word has length 92 [2025-03-04 09:19:18,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:18,615 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 744 transitions. [2025-03-04 09:19:18,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.428571428571429) internal successors, (90), 15 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:19:18,616 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 744 transitions. [2025-03-04 09:19:18,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-04 09:19:18,617 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:18,617 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:18,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-04 09:19:18,617 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr210REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:19:18,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:18,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1242194279, now seen corresponding path program 1 times [2025-03-04 09:19:18,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:19:18,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46369032] [2025-03-04 09:19:18,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:18,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:19:18,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-04 09:19:18,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-04 09:19:18,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:18,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:19,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:19,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:19:19,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46369032] [2025-03-04 09:19:19,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46369032] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:19:19,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:19:19,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-04 09:19:19,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606393568] [2025-03-04 09:19:19,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:19:19,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 09:19:19,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:19:19,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 09:19:19,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-03-04 09:19:19,085 INFO L87 Difference]: Start difference. First operand 647 states and 744 transitions. Second operand has 13 states, 12 states have (on average 7.5) internal successors, (90), 13 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:19:20,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:20,029 INFO L93 Difference]: Finished difference Result 650 states and 748 transitions. [2025-03-04 09:19:20,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 09:19:20,029 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.5) internal successors, (90), 13 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2025-03-04 09:19:20,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:20,031 INFO L225 Difference]: With dead ends: 650 [2025-03-04 09:19:20,031 INFO L226 Difference]: Without dead ends: 650 [2025-03-04 09:19:20,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2025-03-04 09:19:20,032 INFO L435 NwaCegarLoop]: 343 mSDtfsCounter, 518 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1923 SdHoareTripleChecker+Invalid, 2371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:20,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1923 Invalid, 2371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-04 09:19:20,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2025-03-04 09:19:20,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 647. [2025-03-04 09:19:20,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 445 states have (on average 1.6089887640449438) internal successors, (716), 639 states have internal predecessors, (716), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-04 09:19:20,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 743 transitions. [2025-03-04 09:19:20,038 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 743 transitions. Word has length 92 [2025-03-04 09:19:20,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:20,038 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 743 transitions. [2025-03-04 09:19:20,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.5) internal successors, (90), 13 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:19:20,038 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 743 transitions. [2025-03-04 09:19:20,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-04 09:19:20,039 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:20,039 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:20,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-04 09:19:20,039 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr209REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:19:20,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:20,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1640690262, now seen corresponding path program 1 times [2025-03-04 09:19:20,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:19:20,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738958226] [2025-03-04 09:19:20,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:20,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:19:20,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-04 09:19:20,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-04 09:19:20,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:20,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:20,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:20,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:19:20,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738958226] [2025-03-04 09:19:20,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738958226] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:19:20,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905281565] [2025-03-04 09:19:20,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:20,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:20,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:20,442 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:19:20,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 09:19:20,564 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-04 09:19:20,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-04 09:19:20,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:20,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:20,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-04 09:19:20,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:20,615 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 [2025-03-04 09:19:20,681 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:19:20,681 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 [2025-03-04 09:19:20,685 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 19 treesize of output 1 [2025-03-04 09:19:20,740 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:20,740 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 42 treesize of output 41 [2025-03-04 09:19:20,767 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:20,767 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 42 treesize of output 41 [2025-03-04 09:19:20,793 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:20,793 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 42 treesize of output 41 [2025-03-04 09:19:20,822 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:20,823 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 42 treesize of output 41 [2025-03-04 09:19:20,830 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 31 treesize of output 13 [2025-03-04 09:19:20,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:20,831 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:19:20,843 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1713 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1713) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2025-03-04 09:19:20,868 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1713 (Array Int Int)) (v_ArrVal_1712 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1712))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1713)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-04 09:19:20,900 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1713 (Array Int Int)) (v_ArrVal_1712 (Array Int Int)) (v_ArrVal_1711 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1711))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1712)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1713)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-04 09:19:20,954 INFO L349 Elim1Store]: treesize reduction 5, result has 95.0 percent of original size [2025-03-04 09:19:20,954 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 105 treesize of output 104 [2025-03-04 09:19:20,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905281565] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:19:20,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:19:20,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 20 [2025-03-04 09:19:20,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879071197] [2025-03-04 09:19:20,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:19:20,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-04 09:19:20,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:19:20,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-04 09:19:20,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=487, Unknown=29, NotChecked=144, Total=756 [2025-03-04 09:19:20,993 INFO L87 Difference]: Start difference. First operand 647 states and 743 transitions. Second operand has 21 states, 19 states have (on average 7.368421052631579) internal successors, (140), 21 states have internal predecessors, (140), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:19:22,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:22,244 INFO L93 Difference]: Finished difference Result 649 states and 747 transitions. [2025-03-04 09:19:22,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 09:19:22,248 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 7.368421052631579) internal successors, (140), 21 states have internal predecessors, (140), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 93 [2025-03-04 09:19:22,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:22,250 INFO L225 Difference]: With dead ends: 649 [2025-03-04 09:19:22,250 INFO L226 Difference]: Without dead ends: 649 [2025-03-04 09:19:22,250 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=919, Unknown=29, NotChecked=198, Total=1332 [2025-03-04 09:19:22,251 INFO L435 NwaCegarLoop]: 339 mSDtfsCounter, 488 mSDsluCounter, 3366 mSDsCounter, 0 mSdLazyCounter, 3537 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 3705 SdHoareTripleChecker+Invalid, 3560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 3537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:22,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 3705 Invalid, 3560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 3537 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-04 09:19:22,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2025-03-04 09:19:22,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 646. [2025-03-04 09:19:22,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 445 states have (on average 1.6067415730337078) internal successors, (715), 638 states have internal predecessors, (715), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-04 09:19:22,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 742 transitions. [2025-03-04 09:19:22,263 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 742 transitions. Word has length 93 [2025-03-04 09:19:22,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:22,264 INFO L471 AbstractCegarLoop]: Abstraction has 646 states and 742 transitions. [2025-03-04 09:19:22,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 7.368421052631579) internal successors, (140), 21 states have internal predecessors, (140), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:19:22,264 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 742 transitions. [2025-03-04 09:19:22,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-04 09:19:22,264 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:22,264 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:22,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 09:19:22,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:22,465 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr210REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:19:22,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:22,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1640690261, now seen corresponding path program 1 times [2025-03-04 09:19:22,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:19:22,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475804543] [2025-03-04 09:19:22,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:22,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:19:22,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-04 09:19:22,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-04 09:19:22,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:22,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:23,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:19:23,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475804543] [2025-03-04 09:19:23,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475804543] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:19:23,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034575371] [2025-03-04 09:19:23,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:23,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:23,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:23,025 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:19:23,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 09:19:23,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-04 09:19:23,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-04 09:19:23,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:23,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:23,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-03-04 09:19:23,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:23,192 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 [2025-03-04 09:19:23,261 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:19:23,261 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 [2025-03-04 09:19:23,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2025-03-04 09:19:23,269 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 13 treesize of output 9 [2025-03-04 09:19:23,272 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 19 treesize of output 1 [2025-03-04 09:19:23,310 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 22 treesize of output 10 [2025-03-04 09:19:23,313 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 9 treesize of output 3 [2025-03-04 09:19:23,380 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:23,380 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 62 treesize of output 57 [2025-03-04 09:19:23,383 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 30 treesize of output 13 [2025-03-04 09:19:23,428 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:23,428 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 62 treesize of output 57 [2025-03-04 09:19:23,435 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 30 treesize of output 13 [2025-03-04 09:19:23,466 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:23,467 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 62 treesize of output 57 [2025-03-04 09:19:23,471 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 30 treesize of output 13 [2025-03-04 09:19:23,511 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:23,511 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 62 treesize of output 57 [2025-03-04 09:19:23,515 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 30 treesize of output 13 [2025-03-04 09:19:23,524 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 31 treesize of output 13 [2025-03-04 09:19:23,528 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 9 treesize of output 3 [2025-03-04 09:19:23,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:23,529 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:19:23,574 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1882 (Array Int Int)) (v_ArrVal_1881 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1881) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 24) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1882) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1881 (Array Int Int))) (<= 0 (+ 20 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1881) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2025-03-04 09:19:23,585 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1881 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1881) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 20))) (forall ((v_ArrVal_1882 (Array Int Int)) (v_ArrVal_1881 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1881) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1882) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2025-03-04 09:19:23,599 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1879 (Array Int Int)) (v_ArrVal_1881 (Array Int Int)) (v_ArrVal_1880 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1879) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1880) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1881) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 20))) (forall ((v_ArrVal_1879 (Array Int Int)) (v_ArrVal_1882 (Array Int Int)) (v_ArrVal_1881 (Array Int Int)) (v_ArrVal_1880 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1880))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1879) .cse1 v_ArrVal_1881) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 24) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1882) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))) is different from false [2025-03-04 09:19:23,663 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1879 (Array Int Int)) (v_ArrVal_1878 (Array Int Int)) (v_ArrVal_1877 (Array Int Int)) (v_ArrVal_1881 (Array Int Int)) (v_ArrVal_1880 (Array Int Int))) (<= 0 (+ 20 (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1878))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1877) .cse0 v_ArrVal_1879) (select (select (store .cse1 .cse0 v_ArrVal_1880) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1881))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))) (forall ((v_ArrVal_1879 (Array Int Int)) (v_ArrVal_1878 (Array Int Int)) (v_ArrVal_1877 (Array Int Int)) (v_ArrVal_1882 (Array Int Int)) (v_ArrVal_1881 (Array Int Int)) (v_ArrVal_1880 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1878))) (let ((.cse3 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse5 (store .cse6 .cse3 v_ArrVal_1880))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1877) .cse3 v_ArrVal_1879) .cse4 v_ArrVal_1881) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 24) (select |c_#length| (select (select (store .cse5 .cse4 v_ArrVal_1882) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))))) is different from false [2025-03-04 09:19:23,867 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1879 (Array Int Int)) (v_ArrVal_1878 (Array Int Int)) (v_ArrVal_1888 (Array Int Int)) (v_ArrVal_1877 (Array Int Int)) (v_ArrVal_1887 (Array Int Int)) (v_ArrVal_1882 (Array Int Int)) (v_ArrVal_1881 (Array Int Int)) (v_ArrVal_1880 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1888))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_1878))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_1880))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1887) .cse0 v_ArrVal_1877) .cse1 v_ArrVal_1879) .cse2 v_ArrVal_1881) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_1882) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_1879 (Array Int Int)) (v_ArrVal_1878 (Array Int Int)) (v_ArrVal_1888 (Array Int Int)) (v_ArrVal_1877 (Array Int Int)) (v_ArrVal_1887 (Array Int Int)) (v_ArrVal_1881 (Array Int Int)) (v_ArrVal_1880 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse10 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1888))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_1878))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1887) .cse7 v_ArrVal_1877) .cse8 v_ArrVal_1879) (select (select (store .cse9 .cse8 v_ArrVal_1880) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_1881))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 20))))) is different from false [2025-03-04 09:19:23,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034575371] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:19:23,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:19:23,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 19 [2025-03-04 09:19:23,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97752586] [2025-03-04 09:19:23,869 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:19:23,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-04 09:19:23,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:19:23,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-04 09:19:23,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=450, Unknown=19, NotChecked=240, Total=812 [2025-03-04 09:19:23,870 INFO L87 Difference]: Start difference. First operand 646 states and 742 transitions. Second operand has 20 states, 18 states have (on average 7.722222222222222) internal successors, (139), 20 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:19:25,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:25,390 INFO L93 Difference]: Finished difference Result 648 states and 746 transitions. [2025-03-04 09:19:25,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-04 09:19:25,390 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 7.722222222222222) internal successors, (139), 20 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 93 [2025-03-04 09:19:25,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:25,392 INFO L225 Difference]: With dead ends: 648 [2025-03-04 09:19:25,392 INFO L226 Difference]: Without dead ends: 648 [2025-03-04 09:19:25,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=169, Invalid=762, Unknown=19, NotChecked=310, Total=1260 [2025-03-04 09:19:25,393 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 486 mSDsluCounter, 2408 mSDsCounter, 0 mSdLazyCounter, 3310 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 2749 SdHoareTripleChecker+Invalid, 3335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 3310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:25,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 2749 Invalid, 3335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 3310 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-04 09:19:25,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2025-03-04 09:19:25,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 630. [2025-03-04 09:19:25,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 431 states have (on average 1.6218097447795823) internal successors, (699), 623 states have internal predecessors, (699), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:19:25,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 725 transitions. [2025-03-04 09:19:25,399 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 725 transitions. Word has length 93 [2025-03-04 09:19:25,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:25,399 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 725 transitions. [2025-03-04 09:19:25,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 7.722222222222222) internal successors, (139), 20 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:19:25,399 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 725 transitions. [2025-03-04 09:19:25,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-04 09:19:25,399 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:25,399 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:25,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-04 09:19:25,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-03-04 09:19:25,600 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr205REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:19:25,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:25,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1865717266, now seen corresponding path program 1 times [2025-03-04 09:19:25,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:19:25,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425752563] [2025-03-04 09:19:25,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:25,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:19:25,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-04 09:19:25,628 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-04 09:19:25,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:25,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:26,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:26,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:19:26,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425752563] [2025-03-04 09:19:26,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425752563] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:19:26,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:19:26,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-03-04 09:19:26,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850528208] [2025-03-04 09:19:26,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:19:26,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-04 09:19:26,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:19:26,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-04 09:19:26,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2025-03-04 09:19:26,098 INFO L87 Difference]: Start difference. First operand 630 states and 725 transitions. Second operand has 17 states, 15 states have (on average 6.266666666666667) internal successors, (94), 16 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:19:27,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:27,339 INFO L93 Difference]: Finished difference Result 653 states and 751 transitions. [2025-03-04 09:19:27,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 09:19:27,339 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.266666666666667) internal successors, (94), 16 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2025-03-04 09:19:27,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:27,341 INFO L225 Difference]: With dead ends: 653 [2025-03-04 09:19:27,341 INFO L226 Difference]: Without dead ends: 653 [2025-03-04 09:19:27,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2025-03-04 09:19:27,341 INFO L435 NwaCegarLoop]: 338 mSDtfsCounter, 510 mSDsluCounter, 3031 mSDsCounter, 0 mSdLazyCounter, 3290 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 3369 SdHoareTripleChecker+Invalid, 3317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:27,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 3369 Invalid, 3317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3290 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-04 09:19:27,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2025-03-04 09:19:27,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 649. [2025-03-04 09:19:27,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 449 states have (on average 1.601336302895323) internal successors, (719), 641 states have internal predecessors, (719), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-04 09:19:27,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 746 transitions. [2025-03-04 09:19:27,346 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 746 transitions. Word has length 96 [2025-03-04 09:19:27,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:27,347 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 746 transitions. [2025-03-04 09:19:27,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.266666666666667) internal successors, (94), 16 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:19:27,347 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 746 transitions. [2025-03-04 09:19:27,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-04 09:19:27,347 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:27,347 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:27,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-04 09:19:27,347 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr206REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:19:27,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:27,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1865717267, now seen corresponding path program 1 times [2025-03-04 09:19:27,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:19:27,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739941425] [2025-03-04 09:19:27,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:27,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:19:27,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-04 09:19:27,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-04 09:19:27,371 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:27,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:28,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:19:28,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739941425] [2025-03-04 09:19:28,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739941425] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:19:28,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:19:28,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-04 09:19:28,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818006703] [2025-03-04 09:19:28,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:19:28,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-04 09:19:28,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:19:28,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-04 09:19:28,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2025-03-04 09:19:28,149 INFO L87 Difference]: Start difference. First operand 649 states and 746 transitions. Second operand has 18 states, 16 states have (on average 5.875) internal successors, (94), 17 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:19:29,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:29,467 INFO L93 Difference]: Finished difference Result 652 states and 750 transitions. [2025-03-04 09:19:29,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 09:19:29,468 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.875) internal successors, (94), 17 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2025-03-04 09:19:29,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:29,469 INFO L225 Difference]: With dead ends: 652 [2025-03-04 09:19:29,469 INFO L226 Difference]: Without dead ends: 652 [2025-03-04 09:19:29,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2025-03-04 09:19:29,470 INFO L435 NwaCegarLoop]: 339 mSDtfsCounter, 505 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 2783 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:29,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 2129 Invalid, 2812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2783 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-04 09:19:29,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2025-03-04 09:19:29,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 649. [2025-03-04 09:19:29,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 449 states have (on average 1.599109131403118) internal successors, (718), 641 states have internal predecessors, (718), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-04 09:19:29,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 745 transitions. [2025-03-04 09:19:29,476 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 745 transitions. Word has length 96 [2025-03-04 09:19:29,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:29,476 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 745 transitions. [2025-03-04 09:19:29,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.875) internal successors, (94), 17 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:19:29,476 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 745 transitions. [2025-03-04 09:19:29,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-04 09:19:29,476 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:29,477 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:29,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-04 09:19:29,477 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr205REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:19:29,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:29,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1025649700, now seen corresponding path program 1 times [2025-03-04 09:19:29,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:19:29,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402476530] [2025-03-04 09:19:29,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:29,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:19:29,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-04 09:19:29,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-04 09:19:29,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:29,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:30,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:30,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:19:30,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402476530] [2025-03-04 09:19:30,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402476530] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:19:30,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579388835] [2025-03-04 09:19:30,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:30,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:30,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:30,009 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:19:30,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 09:19:30,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-04 09:19:30,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-04 09:19:30,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:30,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:30,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-03-04 09:19:30,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:30,191 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 [2025-03-04 09:19:30,244 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:19:30,244 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 [2025-03-04 09:19:30,248 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 19 treesize of output 1 [2025-03-04 09:19:30,285 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:30,285 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 42 treesize of output 41 [2025-03-04 09:19:30,305 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:30,305 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 42 treesize of output 41 [2025-03-04 09:19:30,334 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:30,335 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 42 treesize of output 41 [2025-03-04 09:19:30,363 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:30,363 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 42 treesize of output 41 [2025-03-04 09:19:30,392 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:30,392 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 42 treesize of output 41 [2025-03-04 09:19:30,400 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 31 treesize of output 13 [2025-03-04 09:19:30,415 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2025-03-04 09:19:30,415 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 [2025-03-04 09:19:30,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:30,418 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:19:30,946 INFO L349 Elim1Store]: treesize reduction 10, result has 97.5 percent of original size [2025-03-04 09:19:30,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 597 treesize of output 794 [2025-03-04 09:19:30,963 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2219 (Array Int Int)) (v_ArrVal_2218 (Array Int Int)) (v_ArrVal_2217 (Array Int Int)) (v_ArrVal_2224 (Array Int Int)) (v_ArrVal_2220 (Array Int Int))) (= (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_2224))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2217)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2218)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2219)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2220)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem50#1.base|)) is different from false [2025-03-04 09:19:30,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579388835] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:19:30,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:19:30,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 20 [2025-03-04 09:19:30,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296597452] [2025-03-04 09:19:30,965 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:19:30,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-04 09:19:30,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:19:30,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-04 09:19:30,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=749, Unknown=50, NotChecked=58, Total=992 [2025-03-04 09:19:30,967 INFO L87 Difference]: Start difference. First operand 649 states and 745 transitions. Second operand has 21 states, 19 states have (on average 7.2631578947368425) internal successors, (138), 20 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:19:32,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:19:32,248 INFO L93 Difference]: Finished difference Result 651 states and 749 transitions. [2025-03-04 09:19:32,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-04 09:19:32,249 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 7.2631578947368425) internal successors, (138), 20 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2025-03-04 09:19:32,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:19:32,250 INFO L225 Difference]: With dead ends: 651 [2025-03-04 09:19:32,250 INFO L226 Difference]: Without dead ends: 651 [2025-03-04 09:19:32,251 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=254, Invalid=1340, Unknown=50, NotChecked=78, Total=1722 [2025-03-04 09:19:32,251 INFO L435 NwaCegarLoop]: 338 mSDtfsCounter, 489 mSDsluCounter, 3025 mSDsCounter, 0 mSdLazyCounter, 3233 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 3363 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 3233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:19:32,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 3363 Invalid, 3258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 3233 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-04 09:19:32,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2025-03-04 09:19:32,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 648. [2025-03-04 09:19:32,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 449 states have (on average 1.5968819599109132) internal successors, (717), 640 states have internal predecessors, (717), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-04 09:19:32,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 744 transitions. [2025-03-04 09:19:32,258 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 744 transitions. Word has length 97 [2025-03-04 09:19:32,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:19:32,258 INFO L471 AbstractCegarLoop]: Abstraction has 648 states and 744 transitions. [2025-03-04 09:19:32,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 7.2631578947368425) internal successors, (138), 20 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:19:32,259 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 744 transitions. [2025-03-04 09:19:32,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-04 09:19:32,259 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:19:32,260 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:19:32,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-04 09:19:32,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:32,460 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr206REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:19:32,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:19:32,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1025649701, now seen corresponding path program 1 times [2025-03-04 09:19:32,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:19:32,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516033370] [2025-03-04 09:19:32,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:32,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:19:32,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-04 09:19:32,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-04 09:19:32,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:32,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:33,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:33,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:19:33,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516033370] [2025-03-04 09:19:33,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516033370] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:19:33,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138767971] [2025-03-04 09:19:33,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:19:33,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:19:33,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:19:33,154 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:19:33,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 09:19:33,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-04 09:19:33,330 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-04 09:19:33,330 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:19:33,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:19:33,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-03-04 09:19:33,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:19:33,338 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 [2025-03-04 09:19:33,401 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 [2025-03-04 09:19:33,408 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:19:33,408 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 [2025-03-04 09:19:33,433 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 19 treesize of output 1 [2025-03-04 09:19:33,437 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 13 treesize of output 9 [2025-03-04 09:19:33,497 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 22 treesize of output 10 [2025-03-04 09:19:33,500 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 9 treesize of output 3 [2025-03-04 09:19:33,596 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:33,596 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 73 treesize of output 66 [2025-03-04 09:19:33,600 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 30 treesize of output 13 [2025-03-04 09:19:33,673 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:33,673 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 73 treesize of output 66 [2025-03-04 09:19:33,676 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 30 treesize of output 13 [2025-03-04 09:19:33,734 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:33,734 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 73 treesize of output 66 [2025-03-04 09:19:33,738 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 30 treesize of output 13 [2025-03-04 09:19:33,804 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:33,805 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 73 treesize of output 66 [2025-03-04 09:19:33,807 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 30 treesize of output 13 [2025-03-04 09:19:33,868 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:19:33,868 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 73 treesize of output 66 [2025-03-04 09:19:33,870 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 30 treesize of output 13 [2025-03-04 09:19:33,887 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 42 treesize of output 18 [2025-03-04 09:19:33,892 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 9 treesize of output 3 [2025-03-04 09:19:33,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:19:33,928 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2025-03-04 09:19:33,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 21 [2025-03-04 09:19:33,936 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:19:33,937 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 [2025-03-04 09:19:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:19:33,960 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:19:34,233 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (or (forall ((v_ArrVal_2406 (Array Int Int)) (v_ArrVal_2405 (Array Int Int)) (v_ArrVal_2408 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2406) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2405) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2408) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 1))) (forall ((|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0)))) (forall ((v_ArrVal_2407 (Array Int Int)) (v_ArrVal_2406 (Array Int Int)) (v_ArrVal_2405 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int) (v_ArrVal_2408 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0)) (forall ((v_ArrVal_2409 Int)) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2405))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2406) .cse1 v_ArrVal_2408) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc57#1.base_7| v_ArrVal_2409) (select (select (store .cse2 .cse1 v_ArrVal_2407) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))))) is different from false [2025-03-04 09:19:34,675 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (or (forall ((|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0))) (forall ((v_ArrVal_2406 (Array Int Int)) (v_ArrVal_2405 (Array Int Int)) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 (Array Int Int)) (v_ArrVal_2402 (Array Int Int)) (v_ArrVal_2401 (Array Int Int)) (v_ArrVal_2408 (Array Int Int))) (< 0 (+ (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_2401))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse2 (store .cse4 .cse0 v_ArrVal_2404))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_2402) .cse0 v_ArrVal_2403) .cse1 v_ArrVal_2406) (select (select (store .cse2 .cse1 v_ArrVal_2405) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2408))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 1)))) (forall ((v_ArrVal_2407 (Array Int Int)) (v_ArrVal_2406 (Array Int Int)) (v_ArrVal_2405 (Array Int Int)) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2403 (Array Int Int)) (v_ArrVal_2402 (Array Int Int)) (v_ArrVal_2401 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int) (v_ArrVal_2408 (Array Int Int))) (or (forall ((v_ArrVal_2409 Int)) (let ((.cse10 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_2401))) (let ((.cse5 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse5 v_ArrVal_2404))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse8 (store .cse9 .cse6 v_ArrVal_2405))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_2402) .cse5 v_ArrVal_2403) .cse6 v_ArrVal_2406) .cse7 v_ArrVal_2408) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc57#1.base_7| v_ArrVal_2409) (select (select (store .cse8 .cse7 v_ArrVal_2407) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0)))))) is different from false [2025-03-04 09:19:47,763 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 09:19:47,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 604 treesize of output 622 [2025-03-04 09:19:48,374 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2406 (Array Int Int)) (v_ArrVal_2405 (Array Int Int)) (v_ArrVal_2415 (Array Int Int)) (v_ArrVal_2404 (Array Int Int)) (v_ArrVal_2414 (Array Int Int)) (v_ArrVal_2403 (Array Int Int)) (v_ArrVal_2402 (Array Int Int)) (v_ArrVal_2401 (Array Int Int)) (v_ArrVal_2408 (Array Int Int))) (< 0 (+ (select (select (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_2414))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_2401))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_2404))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_2415) .cse0 v_ArrVal_2402) .cse1 v_ArrVal_2403) .cse2 v_ArrVal_2406) (select (select (store .cse3 .cse2 v_ArrVal_2405) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_2408))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 1))) (forall ((v_ArrVal_2407 (Array Int Int)) (v_ArrVal_2409 Int) (v_prenex_19 (Array Int Int)) (v_prenex_21 (Array Int Int)) (v_prenex_20 (Array Int Int)) (v_prenex_25 Int) (v_prenex_24 (Array Int Int)) (v_prenex_23 (Array Int Int)) (v_prenex_22 (Array Int Int)) (v_prenex_18 (Array Int Int)) (v_prenex_17 (Array Int Int)) (v_prenex_26 (Array Int Int))) (or (= |c_ULTIMATE.start_main_#t~mem50#1.base| v_prenex_25) (let ((.cse14 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_prenex_21))) (let ((.cse7 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse13 (store .cse14 .cse7 v_prenex_24))) (let ((.cse8 (select (select .cse13 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse12 (store .cse13 .cse8 v_prenex_20))) (let ((.cse9 (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse11 (store .cse12 .cse9 v_prenex_18))) (let ((.cse10 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (< (+ (select (select (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_prenex_19) .cse7 v_prenex_23) .cse8 v_prenex_22) .cse9 v_prenex_17) .cse10 v_prenex_26) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 3) (select (store |c_#length| v_prenex_25 v_ArrVal_2409) (select (select (store .cse11 .cse10 v_ArrVal_2407) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))))))) is different from false [2025-03-04 09:19:48,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138767971] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:19:48,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:19:48,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 31 [2025-03-04 09:19:48,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649095966] [2025-03-04 09:19:48,389 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:19:48,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-04 09:19:48,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:19:48,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-04 09:19:48,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1422, Unknown=37, NotChecked=240, Total=1892 [2025-03-04 09:19:48,390 INFO L87 Difference]: Start difference. First operand 648 states and 744 transitions. Second operand has 32 states, 29 states have (on average 5.413793103448276) internal successors, (157), 30 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)