./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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_JEN_test10-1.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 b06fba6fbf61d996c1af57497d908c6dba492febf0212a36ee7b28f5806d365e --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:06:24,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:06:24,102 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:06:24,105 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:06:24,105 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:06:24,121 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:06:24,121 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:06:24,121 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:06:24,122 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:06:24,122 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:06:24,123 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:06:24,123 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:06:24,123 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:06:24,124 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:06:24,124 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:06:24,124 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:06:24,125 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:06:24,125 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:06:24,125 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:06:24,125 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:06:24,126 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:06:24,126 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:06:24,127 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:06:24,127 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:06:24,127 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:06:24,127 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:06:24,128 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:06:24,128 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:06:24,128 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:06:24,128 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:06:24,129 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:06:24,129 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:06:24,129 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:06:24,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:06:24,130 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:06:24,130 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:06:24,130 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:06:24,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:06:24,131 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:06:24,131 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:06:24,131 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:06:24,132 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:06:24,132 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b06fba6fbf61d996c1af57497d908c6dba492febf0212a36ee7b28f5806d365e [2024-11-09 10:06:24,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:06:24,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:06:24,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:06:24,379 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:06:24,379 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:06:24,380 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i [2024-11-09 10:06:25,875 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:06:26,185 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:06:26,187 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i [2024-11-09 10:06:26,212 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c62f7dd/94824b68494c4afaa54aa6fac257a6ed/FLAG40b4ecb6e [2024-11-09 10:06:26,227 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c62f7dd/94824b68494c4afaa54aa6fac257a6ed [2024-11-09 10:06:26,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:06:26,232 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:06:26,233 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:06:26,234 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:06:26,239 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:06:26,239 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:06:26" (1/1) ... [2024-11-09 10:06:26,241 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671783fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:26, skipping insertion in model container [2024-11-09 10:06:26,242 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:06:26" (1/1) ... [2024-11-09 10:06:26,322 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:06:26,708 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,728 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,731 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,737 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,742 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,769 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,774 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,777 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,780 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,805 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,805 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,807 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,807 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,819 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,820 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,821 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,822 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,832 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,833 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,834 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,834 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,854 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,854 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,856 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,856 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:06:26,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:06:26,881 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:06:26,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:06:27,033 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:06:27,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:27 WrapperNode [2024-11-09 10:06:27,033 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:06:27,035 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:06:27,035 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:06:27,035 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:06:27,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:27" (1/1) ... [2024-11-09 10:06:27,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:27" (1/1) ... [2024-11-09 10:06:27,181 INFO L138 Inliner]: procedures = 177, calls = 507, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3443 [2024-11-09 10:06:27,182 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:06:27,183 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:06:27,184 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:06:27,184 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:06:27,192 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:27" (1/1) ... [2024-11-09 10:06:27,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:27" (1/1) ... [2024-11-09 10:06:27,268 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:27" (1/1) ... [2024-11-09 10:06:27,434 INFO L175 MemorySlicer]: Split 480 memory accesses to 3 slices as follows [2, 372, 106]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 86 writes are split as follows [0, 82, 4]. [2024-11-09 10:06:27,438 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:27" (1/1) ... [2024-11-09 10:06:27,438 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:27" (1/1) ... [2024-11-09 10:06:27,510 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:27" (1/1) ... [2024-11-09 10:06:27,548 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:27" (1/1) ... [2024-11-09 10:06:27,560 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:27" (1/1) ... [2024-11-09 10:06:27,574 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:27" (1/1) ... [2024-11-09 10:06:27,597 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:06:27,598 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:06:27,599 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:06:27,599 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:06:27,600 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:27" (1/1) ... [2024-11-09 10:06:27,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:06:27,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:06:27,629 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) [2024-11-09 10:06:27,632 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 [2024-11-09 10:06:27,678 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-09 10:06:27,678 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-09 10:06:27,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 10:06:27,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 10:06:27,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 10:06:27,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 10:06:27,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 10:06:27,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 10:06:27,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 10:06:27,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 10:06:27,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-09 10:06:27,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-09 10:06:27,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-09 10:06:27,681 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-09 10:06:27,681 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-09 10:06:27,681 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-09 10:06:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 10:06:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:06:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-09 10:06:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-09 10:06:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-09 10:06:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 10:06:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-09 10:06:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-09 10:06:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-09 10:06:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 10:06:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:06:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 10:06:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 10:06:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:06:27,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:06:27,898 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:06:27,903 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:06:27,966 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 10:06:27,988 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 10:06:28,005 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 10:06:32,345 INFO L? ?]: Removed 2487 outVars from TransFormulas that were not future-live. [2024-11-09 10:06:32,346 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:06:32,386 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:06:32,386 INFO L316 CfgBuilder]: Removed 151 assume(true) statements. [2024-11-09 10:06:32,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:06:32 BoogieIcfgContainer [2024-11-09 10:06:32,387 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:06:32,388 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:06:32,388 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:06:32,391 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:06:32,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:06:26" (1/3) ... [2024-11-09 10:06:32,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@463e3966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:06:32, skipping insertion in model container [2024-11-09 10:06:32,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:27" (2/3) ... [2024-11-09 10:06:32,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@463e3966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:06:32, skipping insertion in model container [2024-11-09 10:06:32,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:06:32" (3/3) ... [2024-11-09 10:06:32,393 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test10-1.i [2024-11-09 10:06:32,406 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:06:32,407 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 986 error locations. [2024-11-09 10:06:32,493 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:06:32,498 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;@35be2911, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:06:32,498 INFO L334 AbstractCegarLoop]: Starting to check reachability of 986 error locations. [2024-11-09 10:06:32,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 2650 states, 1652 states have (on average 1.9776029055690072) internal successors, (3267), 2636 states have internal predecessors, (3267), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 10:06:32,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-09 10:06:32,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:06:32,530 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-09 10:06:32,530 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:06:32,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:06:32,542 INFO L85 PathProgramCache]: Analyzing trace with hash 84472, now seen corresponding path program 1 times [2024-11-09 10:06:32,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:06:32,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276316310] [2024-11-09 10:06:32,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:06:32,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:06:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:32,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:06:32,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:06:32,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276316310] [2024-11-09 10:06:32,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276316310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:06:32,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:06:32,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:06:32,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130978198] [2024-11-09 10:06:32,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:06:32,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:06:32,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:06:32,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:06:32,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:06:32,842 INFO L87 Difference]: Start difference. First operand has 2650 states, 1652 states have (on average 1.9776029055690072) internal successors, (3267), 2636 states have internal predecessors, (3267), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:34,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:06:34,233 INFO L93 Difference]: Finished difference Result 3236 states and 3807 transitions. [2024-11-09 10:06:34,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:06:34,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-09 10:06:34,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:06:34,267 INFO L225 Difference]: With dead ends: 3236 [2024-11-09 10:06:34,267 INFO L226 Difference]: Without dead ends: 3234 [2024-11-09 10:06:34,268 INFO L431 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 [2024-11-09 10:06:34,271 INFO L432 NwaCegarLoop]: 2197 mSDtfsCounter, 2869 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2879 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 10:06:34,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2879 Valid, 2734 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 10:06:34,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3234 states. [2024-11-09 10:06:34,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3234 to 2887. [2024-11-09 10:06:34,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 1917 states have (on average 1.8669796557120502) internal successors, (3579), 2871 states have internal predecessors, (3579), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-09 10:06:34,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 3611 transitions. [2024-11-09 10:06:34,403 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 3611 transitions. Word has length 3 [2024-11-09 10:06:34,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:06:34,404 INFO L471 AbstractCegarLoop]: Abstraction has 2887 states and 3611 transitions. [2024-11-09 10:06:34,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:34,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 3611 transitions. [2024-11-09 10:06:34,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-09 10:06:34,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:06:34,405 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-09 10:06:34,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:06:34,405 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:06:34,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:06:34,406 INFO L85 PathProgramCache]: Analyzing trace with hash 84473, now seen corresponding path program 1 times [2024-11-09 10:06:34,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:06:34,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475953005] [2024-11-09 10:06:34,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:06:34,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:06:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:06:34,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:06:34,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475953005] [2024-11-09 10:06:34,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475953005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:06:34,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:06:34,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:06:34,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084464900] [2024-11-09 10:06:34,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:06:34,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:06:34,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:06:34,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:06:34,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:06:34,480 INFO L87 Difference]: Start difference. First operand 2887 states and 3611 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:36,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:06:36,143 INFO L93 Difference]: Finished difference Result 4956 states and 6133 transitions. [2024-11-09 10:06:36,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:06:36,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-09 10:06:36,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:06:36,157 INFO L225 Difference]: With dead ends: 4956 [2024-11-09 10:06:36,157 INFO L226 Difference]: Without dead ends: 4956 [2024-11-09 10:06:36,159 INFO L431 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 [2024-11-09 10:06:36,160 INFO L432 NwaCegarLoop]: 2399 mSDtfsCounter, 2502 mSDsluCounter, 2108 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2509 SdHoareTripleChecker+Valid, 4507 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 10:06:36,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2509 Valid, 4507 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1683 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 10:06:36,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4956 states. [2024-11-09 10:06:36,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4956 to 4280. [2024-11-09 10:06:36,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 3308 states have (on average 1.835247883917775) internal successors, (6071), 4257 states have internal predecessors, (6071), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 10:06:36,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 6117 transitions. [2024-11-09 10:06:36,238 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 6117 transitions. Word has length 3 [2024-11-09 10:06:36,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:06:36,238 INFO L471 AbstractCegarLoop]: Abstraction has 4280 states and 6117 transitions. [2024-11-09 10:06:36,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:36,239 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 6117 transitions. [2024-11-09 10:06:36,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 10:06:36,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:06:36,239 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:06:36,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:06:36,240 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:06:36,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:06:36,240 INFO L85 PathProgramCache]: Analyzing trace with hash 327722514, now seen corresponding path program 1 times [2024-11-09 10:06:36,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:06:36,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332851310] [2024-11-09 10:06:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:06:36,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:06:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:36,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:06:36,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:06:36,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332851310] [2024-11-09 10:06:36,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332851310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:06:36,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:06:36,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:06:36,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264170193] [2024-11-09 10:06:36,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:06:36,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:06:36,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:06:36,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:06:36,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:06:36,332 INFO L87 Difference]: Start difference. First operand 4280 states and 6117 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:37,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:06:37,406 INFO L93 Difference]: Finished difference Result 5364 states and 7438 transitions. [2024-11-09 10:06:37,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:06:37,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 10:06:37,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:06:37,422 INFO L225 Difference]: With dead ends: 5364 [2024-11-09 10:06:37,422 INFO L226 Difference]: Without dead ends: 5364 [2024-11-09 10:06:37,422 INFO L431 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 [2024-11-09 10:06:37,423 INFO L432 NwaCegarLoop]: 3528 mSDtfsCounter, 2840 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2850 SdHoareTripleChecker+Valid, 4697 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 10:06:37,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2850 Valid, 4697 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 10:06:37,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5364 states. [2024-11-09 10:06:37,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5364 to 4188. [2024-11-09 10:06:37,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4188 states, 3308 states have (on average 1.7868802902055623) internal successors, (5911), 4165 states have internal predecessors, (5911), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 10:06:37,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 5957 transitions. [2024-11-09 10:06:37,529 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 5957 transitions. Word has length 8 [2024-11-09 10:06:37,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:06:37,530 INFO L471 AbstractCegarLoop]: Abstraction has 4188 states and 5957 transitions. [2024-11-09 10:06:37,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:37,530 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 5957 transitions. [2024-11-09 10:06:37,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 10:06:37,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:06:37,530 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:06:37,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:06:37,530 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:06:37,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:06:37,531 INFO L85 PathProgramCache]: Analyzing trace with hash 327722515, now seen corresponding path program 1 times [2024-11-09 10:06:37,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:06:37,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057781407] [2024-11-09 10:06:37,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:06:37,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:06:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:06:37,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:06:37,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057781407] [2024-11-09 10:06:37,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057781407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:06:37,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:06:37,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:06:37,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786655214] [2024-11-09 10:06:37,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:06:37,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:06:37,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:06:37,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:06:37,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:06:37,610 INFO L87 Difference]: Start difference. First operand 4188 states and 5957 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:38,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:06:38,912 INFO L93 Difference]: Finished difference Result 6923 states and 9906 transitions. [2024-11-09 10:06:38,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:06:38,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 10:06:38,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:06:38,930 INFO L225 Difference]: With dead ends: 6923 [2024-11-09 10:06:38,931 INFO L226 Difference]: Without dead ends: 6923 [2024-11-09 10:06:38,931 INFO L431 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 [2024-11-09 10:06:38,932 INFO L432 NwaCegarLoop]: 3882 mSDtfsCounter, 2319 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2323 SdHoareTripleChecker+Valid, 5660 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 10:06:38,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2323 Valid, 5660 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 10:06:38,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6923 states. [2024-11-09 10:06:38,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6923 to 4720. [2024-11-09 10:06:38,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 3850 states have (on average 1.7805194805194806) internal successors, (6855), 4697 states have internal predecessors, (6855), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 10:06:39,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 6901 transitions. [2024-11-09 10:06:39,001 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 6901 transitions. Word has length 8 [2024-11-09 10:06:39,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:06:39,002 INFO L471 AbstractCegarLoop]: Abstraction has 4720 states and 6901 transitions. [2024-11-09 10:06:39,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:39,002 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 6901 transitions. [2024-11-09 10:06:39,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 10:06:39,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:06:39,002 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:06:39,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:06:39,002 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr638REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:06:39,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:06:39,003 INFO L85 PathProgramCache]: Analyzing trace with hash -342826361, now seen corresponding path program 1 times [2024-11-09 10:06:39,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:06:39,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385364138] [2024-11-09 10:06:39,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:06:39,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:06:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:39,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:06:39,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:06:39,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385364138] [2024-11-09 10:06:39,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385364138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:06:39,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:06:39,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:06:39,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083324591] [2024-11-09 10:06:39,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:06:39,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:06:39,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:06:39,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:06:39,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:06:39,119 INFO L87 Difference]: Start difference. First operand 4720 states and 6901 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) [2024-11-09 10:06:39,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:06:39,307 INFO L93 Difference]: Finished difference Result 6557 states and 9343 transitions. [2024-11-09 10:06:39,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:06:39,308 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 [2024-11-09 10:06:39,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:06:39,325 INFO L225 Difference]: With dead ends: 6557 [2024-11-09 10:06:39,325 INFO L226 Difference]: Without dead ends: 6557 [2024-11-09 10:06:39,325 INFO L431 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 [2024-11-09 10:06:39,326 INFO L432 NwaCegarLoop]: 3442 mSDtfsCounter, 1449 mSDsluCounter, 6290 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 9732 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 10:06:39,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 9732 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 10:06:39,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6557 states. [2024-11-09 10:06:39,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6557 to 4722. [2024-11-09 10:06:39,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4722 states, 3852 states have (on average 1.7801142263759087) internal successors, (6857), 4699 states have internal predecessors, (6857), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 10:06:39,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4722 states to 4722 states and 6903 transitions. [2024-11-09 10:06:39,395 INFO L78 Accepts]: Start accepts. Automaton has 4722 states and 6903 transitions. Word has length 11 [2024-11-09 10:06:39,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:06:39,396 INFO L471 AbstractCegarLoop]: Abstraction has 4722 states and 6903 transitions. [2024-11-09 10:06:39,396 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) [2024-11-09 10:06:39,396 INFO L276 IsEmpty]: Start isEmpty. Operand 4722 states and 6903 transitions. [2024-11-09 10:06:39,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 10:06:39,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:06:39,397 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:06:39,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:06:39,397 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr324REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:06:39,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:06:39,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1711966207, now seen corresponding path program 1 times [2024-11-09 10:06:39,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:06:39,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932339342] [2024-11-09 10:06:39,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:06:39,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:06:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:39,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:06:39,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:06:39,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932339342] [2024-11-09 10:06:39,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932339342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:06:39,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:06:39,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:06:39,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259897250] [2024-11-09 10:06:39,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:06:39,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:06:39,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:06:39,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:06:39,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:06:39,509 INFO L87 Difference]: Start difference. First operand 4722 states and 6903 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:39,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:06:39,694 INFO L93 Difference]: Finished difference Result 6557 states and 9342 transitions. [2024-11-09 10:06:39,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:06:39,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-09 10:06:39,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:06:39,712 INFO L225 Difference]: With dead ends: 6557 [2024-11-09 10:06:39,712 INFO L226 Difference]: Without dead ends: 6557 [2024-11-09 10:06:39,712 INFO L431 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 [2024-11-09 10:06:39,716 INFO L432 NwaCegarLoop]: 3442 mSDtfsCounter, 1438 mSDsluCounter, 6290 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 9732 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 10:06:39,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1444 Valid, 9732 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 10:06:39,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6557 states. [2024-11-09 10:06:39,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6557 to 4732. [2024-11-09 10:06:39,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4732 states, 3862 states have (on average 1.7780942516830658) internal successors, (6867), 4709 states have internal predecessors, (6867), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 10:06:39,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4732 states to 4732 states and 6913 transitions. [2024-11-09 10:06:39,786 INFO L78 Accepts]: Start accepts. Automaton has 4732 states and 6913 transitions. Word has length 20 [2024-11-09 10:06:39,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:06:39,787 INFO L471 AbstractCegarLoop]: Abstraction has 4732 states and 6913 transitions. [2024-11-09 10:06:39,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:39,787 INFO L276 IsEmpty]: Start isEmpty. Operand 4732 states and 6913 transitions. [2024-11-09 10:06:39,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 10:06:39,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:06:39,787 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:06:39,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:06:39,788 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:06:39,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:06:39,788 INFO L85 PathProgramCache]: Analyzing trace with hash -286362849, now seen corresponding path program 1 times [2024-11-09 10:06:39,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:06:39,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437135955] [2024-11-09 10:06:39,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:06:39,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:06:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:39,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:06:39,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:06:39,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437135955] [2024-11-09 10:06:39,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437135955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:06:39,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:06:39,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:06:39,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797075259] [2024-11-09 10:06:39,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:06:39,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:06:39,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:06:39,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:06:39,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:06:39,839 INFO L87 Difference]: Start difference. First operand 4732 states and 6913 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:41,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:06:41,076 INFO L93 Difference]: Finished difference Result 4807 states and 7019 transitions. [2024-11-09 10:06:41,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:06:41,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-09 10:06:41,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:06:41,085 INFO L225 Difference]: With dead ends: 4807 [2024-11-09 10:06:41,085 INFO L226 Difference]: Without dead ends: 4807 [2024-11-09 10:06:41,086 INFO L431 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 [2024-11-09 10:06:41,086 INFO L432 NwaCegarLoop]: 2025 mSDtfsCounter, 3103 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3113 SdHoareTripleChecker+Valid, 3925 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 10:06:41,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3113 Valid, 3925 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2009 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 10:06:41,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4807 states. [2024-11-09 10:06:41,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4807 to 4709. [2024-11-09 10:06:41,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4709 states, 3862 states have (on average 1.7661833247022267) internal successors, (6821), 4686 states have internal predecessors, (6821), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 10:06:41,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4709 states to 4709 states and 6867 transitions. [2024-11-09 10:06:41,147 INFO L78 Accepts]: Start accepts. Automaton has 4709 states and 6867 transitions. Word has length 20 [2024-11-09 10:06:41,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:06:41,147 INFO L471 AbstractCegarLoop]: Abstraction has 4709 states and 6867 transitions. [2024-11-09 10:06:41,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:41,148 INFO L276 IsEmpty]: Start isEmpty. Operand 4709 states and 6867 transitions. [2024-11-09 10:06:41,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 10:06:41,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:06:41,149 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:06:41,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:06:41,149 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:06:41,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:06:41,150 INFO L85 PathProgramCache]: Analyzing trace with hash -286362848, now seen corresponding path program 1 times [2024-11-09 10:06:41,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:06:41,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667213007] [2024-11-09 10:06:41,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:06:41,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:06:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:41,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:06:41,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:06:41,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667213007] [2024-11-09 10:06:41,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667213007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:06:41,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:06:41,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:06:41,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739502522] [2024-11-09 10:06:41,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:06:41,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:06:41,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:06:41,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:06:41,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:06:41,202 INFO L87 Difference]: Start difference. First operand 4709 states and 6867 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:41,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:06:41,235 INFO L93 Difference]: Finished difference Result 4571 states and 6661 transitions. [2024-11-09 10:06:41,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:06:41,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-09 10:06:41,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:06:41,243 INFO L225 Difference]: With dead ends: 4571 [2024-11-09 10:06:41,243 INFO L226 Difference]: Without dead ends: 4571 [2024-11-09 10:06:41,244 INFO L431 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 [2024-11-09 10:06:41,244 INFO L432 NwaCegarLoop]: 2856 mSDtfsCounter, 61 mSDsluCounter, 2803 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 5659 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 10:06:41,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 5659 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 10:06:41,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4571 states. [2024-11-09 10:06:41,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4571 to 4571. [2024-11-09 10:06:41,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4571 states, 3736 states have (on average 1.770610278372591) internal successors, (6615), 4548 states have internal predecessors, (6615), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 10:06:41,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4571 states to 4571 states and 6661 transitions. [2024-11-09 10:06:41,294 INFO L78 Accepts]: Start accepts. Automaton has 4571 states and 6661 transitions. Word has length 20 [2024-11-09 10:06:41,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:06:41,294 INFO L471 AbstractCegarLoop]: Abstraction has 4571 states and 6661 transitions. [2024-11-09 10:06:41,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:41,294 INFO L276 IsEmpty]: Start isEmpty. Operand 4571 states and 6661 transitions. [2024-11-09 10:06:41,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 10:06:41,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:06:41,295 INFO L215 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] [2024-11-09 10:06:41,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 10:06:41,295 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:06:41,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:06:41,296 INFO L85 PathProgramCache]: Analyzing trace with hash -316632036, now seen corresponding path program 1 times [2024-11-09 10:06:41,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:06:41,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435878694] [2024-11-09 10:06:41,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:06:41,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:06:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:41,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:06:41,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:06:41,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435878694] [2024-11-09 10:06:41,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435878694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:06:41,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:06:41,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:06:41,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275102022] [2024-11-09 10:06:41,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:06:41,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:06:41,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:06:41,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:06:41,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:06:41,340 INFO L87 Difference]: Start difference. First operand 4571 states and 6661 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:41,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:06:41,395 INFO L93 Difference]: Finished difference Result 4542 states and 6611 transitions. [2024-11-09 10:06:41,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:06:41,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-09 10:06:41,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:06:41,403 INFO L225 Difference]: With dead ends: 4542 [2024-11-09 10:06:41,403 INFO L226 Difference]: Without dead ends: 4542 [2024-11-09 10:06:41,404 INFO L431 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 [2024-11-09 10:06:41,404 INFO L432 NwaCegarLoop]: 2821 mSDtfsCounter, 41 mSDsluCounter, 5614 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 8435 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 10:06:41,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 8435 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 10:06:41,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4542 states. [2024-11-09 10:06:41,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4542 to 4536. [2024-11-09 10:06:41,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4536 states, 3708 states have (on average 1.7688781014023733) internal successors, (6559), 4513 states have internal predecessors, (6559), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 10:06:41,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4536 states to 4536 states and 6605 transitions. [2024-11-09 10:06:41,455 INFO L78 Accepts]: Start accepts. Automaton has 4536 states and 6605 transitions. Word has length 22 [2024-11-09 10:06:41,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:06:41,455 INFO L471 AbstractCegarLoop]: Abstraction has 4536 states and 6605 transitions. [2024-11-09 10:06:41,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:41,455 INFO L276 IsEmpty]: Start isEmpty. Operand 4536 states and 6605 transitions. [2024-11-09 10:06:41,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 10:06:41,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:06:41,456 INFO L215 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] [2024-11-09 10:06:41,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 10:06:41,457 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:06:41,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:06:41,457 INFO L85 PathProgramCache]: Analyzing trace with hash -828222326, now seen corresponding path program 1 times [2024-11-09 10:06:41,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:06:41,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798706931] [2024-11-09 10:06:41,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:06:41,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:06:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:41,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:06:41,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:06:41,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798706931] [2024-11-09 10:06:41,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798706931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:06:41,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:06:41,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:06:41,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119888640] [2024-11-09 10:06:41,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:06:41,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:06:41,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:06:41,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:06:41,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:06:41,639 INFO L87 Difference]: Start difference. First operand 4536 states and 6605 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:43,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:06:43,208 INFO L93 Difference]: Finished difference Result 6833 states and 9754 transitions. [2024-11-09 10:06:43,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:06:43,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2024-11-09 10:06:43,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:06:43,219 INFO L225 Difference]: With dead ends: 6833 [2024-11-09 10:06:43,220 INFO L226 Difference]: Without dead ends: 6833 [2024-11-09 10:06:43,220 INFO L431 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 [2024-11-09 10:06:43,220 INFO L432 NwaCegarLoop]: 2286 mSDtfsCounter, 2318 mSDsluCounter, 3649 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2322 SdHoareTripleChecker+Valid, 5935 SdHoareTripleChecker+Invalid, 2381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 10:06:43,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2322 Valid, 5935 Invalid, 2381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 10:06:43,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6833 states. [2024-11-09 10:06:43,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6833 to 4532. [2024-11-09 10:06:43,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4532 states, 3708 states have (on average 1.766720604099245) internal successors, (6551), 4509 states have internal predecessors, (6551), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 10:06:43,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4532 states to 4532 states and 6597 transitions. [2024-11-09 10:06:43,272 INFO L78 Accepts]: Start accepts. Automaton has 4532 states and 6597 transitions. Word has length 36 [2024-11-09 10:06:43,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:06:43,272 INFO L471 AbstractCegarLoop]: Abstraction has 4532 states and 6597 transitions. [2024-11-09 10:06:43,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:43,273 INFO L276 IsEmpty]: Start isEmpty. Operand 4532 states and 6597 transitions. [2024-11-09 10:06:43,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 10:06:43,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:06:43,274 INFO L215 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] [2024-11-09 10:06:43,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 10:06:43,274 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr119REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:06:43,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:06:43,275 INFO L85 PathProgramCache]: Analyzing trace with hash 852766398, now seen corresponding path program 1 times [2024-11-09 10:06:43,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:06:43,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481135938] [2024-11-09 10:06:43,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:06:43,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:06:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:43,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:06:43,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:06:43,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481135938] [2024-11-09 10:06:43,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481135938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:06:43,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:06:43,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:06:43,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137976613] [2024-11-09 10:06:43,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:06:43,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:06:43,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:06:43,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:06:43,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:06:43,361 INFO L87 Difference]: Start difference. First operand 4532 states and 6597 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:43,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:06:43,431 INFO L93 Difference]: Finished difference Result 4532 states and 6589 transitions. [2024-11-09 10:06:43,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:06:43,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2024-11-09 10:06:43,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:06:43,437 INFO L225 Difference]: With dead ends: 4532 [2024-11-09 10:06:43,438 INFO L226 Difference]: Without dead ends: 4532 [2024-11-09 10:06:43,438 INFO L431 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 [2024-11-09 10:06:43,438 INFO L432 NwaCegarLoop]: 2816 mSDtfsCounter, 21 mSDsluCounter, 5601 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 8417 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 10:06:43,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 8417 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 10:06:43,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4532 states. [2024-11-09 10:06:43,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4532 to 4532. [2024-11-09 10:06:43,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4532 states, 3708 states have (on average 1.7645631067961165) internal successors, (6543), 4509 states have internal predecessors, (6543), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-09 10:06:43,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4532 states to 4532 states and 6589 transitions. [2024-11-09 10:06:43,477 INFO L78 Accepts]: Start accepts. Automaton has 4532 states and 6589 transitions. Word has length 70 [2024-11-09 10:06:43,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:06:43,478 INFO L471 AbstractCegarLoop]: Abstraction has 4532 states and 6589 transitions. [2024-11-09 10:06:43,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:43,478 INFO L276 IsEmpty]: Start isEmpty. Operand 4532 states and 6589 transitions. [2024-11-09 10:06:43,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-09 10:06:43,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:06:43,479 INFO L215 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] [2024-11-09 10:06:43,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 10:06:43,479 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr119REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:06:43,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:06:43,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1685969162, now seen corresponding path program 1 times [2024-11-09 10:06:43,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:06:43,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023015578] [2024-11-09 10:06:43,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:06:43,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:06:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:43,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:06:43,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:06:43,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023015578] [2024-11-09 10:06:43,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023015578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:06:43,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:06:43,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:06:43,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69021975] [2024-11-09 10:06:43,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:06:43,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:06:43,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:06:43,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:06:43,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:06:43,574 INFO L87 Difference]: Start difference. First operand 4532 states and 6589 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:43,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:06:43,668 INFO L93 Difference]: Finished difference Result 6036 states and 8768 transitions. [2024-11-09 10:06:43,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:06:43,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2024-11-09 10:06:43,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:06:43,677 INFO L225 Difference]: With dead ends: 6036 [2024-11-09 10:06:43,677 INFO L226 Difference]: Without dead ends: 6036 [2024-11-09 10:06:43,677 INFO L431 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 [2024-11-09 10:06:43,678 INFO L432 NwaCegarLoop]: 2832 mSDtfsCounter, 1083 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 5601 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 10:06:43,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 5601 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 10:06:43,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6036 states. [2024-11-09 10:06:43,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6036 to 5385. [2024-11-09 10:06:43,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5385 states, 4557 states have (on average 1.7469826640333552) internal successors, (7961), 5358 states have internal predecessors, (7961), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-09 10:06:43,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5385 states to 5385 states and 8015 transitions. [2024-11-09 10:06:43,787 INFO L78 Accepts]: Start accepts. Automaton has 5385 states and 8015 transitions. Word has length 78 [2024-11-09 10:06:43,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:06:43,787 INFO L471 AbstractCegarLoop]: Abstraction has 5385 states and 8015 transitions. [2024-11-09 10:06:43,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:43,787 INFO L276 IsEmpty]: Start isEmpty. Operand 5385 states and 8015 transitions. [2024-11-09 10:06:43,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-09 10:06:43,788 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:06:43,788 INFO L215 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] [2024-11-09 10:06:43,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 10:06:43,789 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:06:43,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:06:43,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1252654197, now seen corresponding path program 1 times [2024-11-09 10:06:43,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:06:43,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280182278] [2024-11-09 10:06:43,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:06:43,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:06:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:06:44,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:06:44,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280182278] [2024-11-09 10:06:44,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280182278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:06:44,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:06:44,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:06:44,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318924466] [2024-11-09 10:06:44,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:06:44,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:06:44,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:06:44,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:06:44,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:06:44,067 INFO L87 Difference]: Start difference. First operand 5385 states and 8015 transitions. Second operand has 6 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:45,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:06:45,617 INFO L93 Difference]: Finished difference Result 5301 states and 7873 transitions. [2024-11-09 10:06:45,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:06:45,617 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), 0 states have call successors, (0), 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 81 [2024-11-09 10:06:45,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:06:45,625 INFO L225 Difference]: With dead ends: 5301 [2024-11-09 10:06:45,626 INFO L226 Difference]: Without dead ends: 5301 [2024-11-09 10:06:45,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:06:45,626 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 5265 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5275 SdHoareTripleChecker+Valid, 3045 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 10:06:45,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5275 Valid, 3045 Invalid, 2537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 10:06:45,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2024-11-09 10:06:45,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 4759. [2024-11-09 10:06:45,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4759 states, 4015 states have (on average 1.7073474470734744) internal successors, (6855), 4732 states have internal predecessors, (6855), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-09 10:06:45,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4759 states to 4759 states and 6909 transitions. [2024-11-09 10:06:45,666 INFO L78 Accepts]: Start accepts. Automaton has 4759 states and 6909 transitions. Word has length 81 [2024-11-09 10:06:45,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:06:45,666 INFO L471 AbstractCegarLoop]: Abstraction has 4759 states and 6909 transitions. [2024-11-09 10:06:45,667 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:45,667 INFO L276 IsEmpty]: Start isEmpty. Operand 4759 states and 6909 transitions. [2024-11-09 10:06:45,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-09 10:06:45,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:06:45,667 INFO L215 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] [2024-11-09 10:06:45,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 10:06:45,668 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:06:45,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:06:45,668 INFO L85 PathProgramCache]: Analyzing trace with hash -420245411, now seen corresponding path program 1 times [2024-11-09 10:06:45,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:06:45,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46603062] [2024-11-09 10:06:45,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:06:45,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:06:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:06:45,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:06:45,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46603062] [2024-11-09 10:06:45,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46603062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:06:45,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:06:45,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:06:45,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990292769] [2024-11-09 10:06:45,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:06:45,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:06:45,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:06:45,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:06:45,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:06:45,845 INFO L87 Difference]: Start difference. First operand 4759 states and 6909 transitions. Second operand has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:47,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:06:47,205 INFO L93 Difference]: Finished difference Result 4758 states and 6907 transitions. [2024-11-09 10:06:47,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:06:47,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2024-11-09 10:06:47,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:06:47,215 INFO L225 Difference]: With dead ends: 4758 [2024-11-09 10:06:47,215 INFO L226 Difference]: Without dead ends: 4758 [2024-11-09 10:06:47,216 INFO L431 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 [2024-11-09 10:06:47,217 INFO L432 NwaCegarLoop]: 2743 mSDtfsCounter, 2 mSDsluCounter, 5744 mSDsCounter, 0 mSdLazyCounter, 2492 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8487 SdHoareTripleChecker+Invalid, 2493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 10:06:47,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8487 Invalid, 2493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2492 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 10:06:47,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4758 states. [2024-11-09 10:06:47,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4758 to 4758. [2024-11-09 10:06:47,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4758 states, 4015 states have (on average 1.7068493150684931) internal successors, (6853), 4731 states have internal predecessors, (6853), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-09 10:06:47,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4758 states to 4758 states and 6907 transitions. [2024-11-09 10:06:47,268 INFO L78 Accepts]: Start accepts. Automaton has 4758 states and 6907 transitions. Word has length 86 [2024-11-09 10:06:47,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:06:47,268 INFO L471 AbstractCegarLoop]: Abstraction has 4758 states and 6907 transitions. [2024-11-09 10:06:47,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:47,268 INFO L276 IsEmpty]: Start isEmpty. Operand 4758 states and 6907 transitions. [2024-11-09 10:06:47,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-09 10:06:47,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:06:47,271 INFO L215 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] [2024-11-09 10:06:47,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 10:06:47,272 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:06:47,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:06:47,272 INFO L85 PathProgramCache]: Analyzing trace with hash -420245410, now seen corresponding path program 1 times [2024-11-09 10:06:47,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:06:47,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23669555] [2024-11-09 10:06:47,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:06:47,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:06:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:47,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:06:47,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:06:47,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23669555] [2024-11-09 10:06:47,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23669555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:06:47,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:06:47,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:06:47,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453903487] [2024-11-09 10:06:47,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:06:47,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:06:47,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:06:47,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:06:47,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:06:47,652 INFO L87 Difference]: Start difference. First operand 4758 states and 6907 transitions. Second operand has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:49,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:06:49,079 INFO L93 Difference]: Finished difference Result 4757 states and 6905 transitions. [2024-11-09 10:06:49,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:06:49,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2024-11-09 10:06:49,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:06:49,089 INFO L225 Difference]: With dead ends: 4757 [2024-11-09 10:06:49,089 INFO L226 Difference]: Without dead ends: 4757 [2024-11-09 10:06:49,090 INFO L431 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 [2024-11-09 10:06:49,091 INFO L432 NwaCegarLoop]: 2743 mSDtfsCounter, 1 mSDsluCounter, 5718 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8461 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 10:06:49,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 8461 Invalid, 2516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 10:06:49,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2024-11-09 10:06:49,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 4757. [2024-11-09 10:06:49,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4757 states, 4013 states have (on average 1.7072015948168453) internal successors, (6851), 4730 states have internal predecessors, (6851), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-09 10:06:49,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4757 states to 4757 states and 6905 transitions. [2024-11-09 10:06:49,143 INFO L78 Accepts]: Start accepts. Automaton has 4757 states and 6905 transitions. Word has length 86 [2024-11-09 10:06:49,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:06:49,144 INFO L471 AbstractCegarLoop]: Abstraction has 4757 states and 6905 transitions. [2024-11-09 10:06:49,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:06:49,144 INFO L276 IsEmpty]: Start isEmpty. Operand 4757 states and 6905 transitions. [2024-11-09 10:06:49,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 10:06:49,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:06:49,145 INFO L215 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] [2024-11-09 10:06:49,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 10:06:49,145 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:06:49,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:06:49,145 INFO L85 PathProgramCache]: Analyzing trace with hash -796304604, now seen corresponding path program 1 times [2024-11-09 10:06:49,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:06:49,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075591635] [2024-11-09 10:06:49,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:06:49,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:06:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:49,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 10:06:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:49,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:06:49,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:06:49,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075591635] [2024-11-09 10:06:49,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075591635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:06:49,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:06:49,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:06:49,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657142828] [2024-11-09 10:06:49,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:06:49,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:06:49,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:06:49,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:06:49,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:06:49,366 INFO L87 Difference]: Start difference. First operand 4757 states and 6905 transitions. Second operand has 7 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 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) [2024-11-09 10:06:51,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:06:51,119 INFO L93 Difference]: Finished difference Result 4775 states and 6938 transitions. [2024-11-09 10:06:51,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 10:06:51,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 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 94 [2024-11-09 10:06:51,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:06:51,127 INFO L225 Difference]: With dead ends: 4775 [2024-11-09 10:06:51,128 INFO L226 Difference]: Without dead ends: 4775 [2024-11-09 10:06:51,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-09 10:06:51,128 INFO L432 NwaCegarLoop]: 2707 mSDtfsCounter, 31 mSDsluCounter, 10436 mSDsCounter, 0 mSdLazyCounter, 3293 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 13143 SdHoareTripleChecker+Invalid, 3304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 10:06:51,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 13143 Invalid, 3304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3293 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 10:06:51,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2024-11-09 10:06:51,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 4766. [2024-11-09 10:06:51,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4766 states, 4021 states have (on average 1.7065406615269834) internal successors, (6862), 4737 states have internal predecessors, (6862), 27 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (39), 26 states have call predecessors, (39), 27 states have call successors, (39) [2024-11-09 10:06:51,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4766 states to 4766 states and 6928 transitions. [2024-11-09 10:06:51,188 INFO L78 Accepts]: Start accepts. Automaton has 4766 states and 6928 transitions. Word has length 94 [2024-11-09 10:06:51,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:06:51,188 INFO L471 AbstractCegarLoop]: Abstraction has 4766 states and 6928 transitions. [2024-11-09 10:06:51,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 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) [2024-11-09 10:06:51,188 INFO L276 IsEmpty]: Start isEmpty. Operand 4766 states and 6928 transitions. [2024-11-09 10:06:51,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 10:06:51,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:06:51,189 INFO L215 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] [2024-11-09 10:06:51,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 10:06:51,189 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:06:51,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:06:51,190 INFO L85 PathProgramCache]: Analyzing trace with hash -796304603, now seen corresponding path program 1 times [2024-11-09 10:06:51,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:06:51,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145576703] [2024-11-09 10:06:51,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:06:51,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:06:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:51,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 10:06:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:51,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:06:51,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:06:51,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145576703] [2024-11-09 10:06:51,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145576703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:06:51,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:06:51,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:06:51,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891179086] [2024-11-09 10:06:51,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:06:51,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:06:51,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:06:51,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:06:51,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:06:51,606 INFO L87 Difference]: Start difference. First operand 4766 states and 6928 transitions. Second operand has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2024-11-09 10:06:53,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:06:53,259 INFO L93 Difference]: Finished difference Result 4766 states and 6926 transitions. [2024-11-09 10:06:53,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:06:53,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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 94 [2024-11-09 10:06:53,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:06:53,268 INFO L225 Difference]: With dead ends: 4766 [2024-11-09 10:06:53,268 INFO L226 Difference]: Without dead ends: 4766 [2024-11-09 10:06:53,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 10:06:53,269 INFO L432 NwaCegarLoop]: 2714 mSDtfsCounter, 43 mSDsluCounter, 8081 mSDsCounter, 0 mSdLazyCounter, 2892 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 10795 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 10:06:53,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 10795 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2892 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 10:06:53,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4766 states. [2024-11-09 10:06:53,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4766 to 4766. [2024-11-09 10:06:53,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4766 states, 4021 states have (on average 1.706043272817707) internal successors, (6860), 4737 states have internal predecessors, (6860), 27 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (39), 26 states have call predecessors, (39), 27 states have call successors, (39) [2024-11-09 10:06:53,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4766 states to 4766 states and 6926 transitions. [2024-11-09 10:06:53,317 INFO L78 Accepts]: Start accepts. Automaton has 4766 states and 6926 transitions. Word has length 94 [2024-11-09 10:06:53,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:06:53,318 INFO L471 AbstractCegarLoop]: Abstraction has 4766 states and 6926 transitions. [2024-11-09 10:06:53,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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) [2024-11-09 10:06:53,318 INFO L276 IsEmpty]: Start isEmpty. Operand 4766 states and 6926 transitions. [2024-11-09 10:06:53,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-09 10:06:53,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:06:53,319 INFO L215 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] [2024-11-09 10:06:53,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 10:06:53,319 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:06:53,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:06:53,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1398690569, now seen corresponding path program 1 times [2024-11-09 10:06:53,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:06:53,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449915913] [2024-11-09 10:06:53,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:06:53,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:06:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:53,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 10:06:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:53,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:06:53,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:06:53,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449915913] [2024-11-09 10:06:53,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449915913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:06:53,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733669088] [2024-11-09 10:06:53,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:06:53,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:06:53,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:06:53,782 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) [2024-11-09 10:06:53,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:06:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:06:54,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 10:06:54,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:06:54,057 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 [2024-11-09 10:06:54,243 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-09 10:06:54,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-09 10:06:54,295 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 [2024-11-09 10:06:54,388 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 [2024-11-09 10:06:54,560 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:06:54,561 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 [2024-11-09 10:06:54,597 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 [2024-11-09 10:06:54,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:06:54,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:06:54,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733669088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:06:54,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:06:54,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2024-11-09 10:06:54,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510958279] [2024-11-09 10:06:54,681 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 10:06:54,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 10:06:54,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:06:54,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 10:06:54,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=320, Unknown=6, NotChecked=0, Total=380 [2024-11-09 10:06:54,683 INFO L87 Difference]: Start difference. First operand 4766 states and 6926 transitions. Second operand has 19 states, 16 states have (on average 9.4375) internal successors, (151), 18 states have internal predecessors, (151), 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) [2024-11-09 10:06:59,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:06:59,543 INFO L93 Difference]: Finished difference Result 4773 states and 6932 transitions. [2024-11-09 10:06:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 10:06:59,543 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 9.4375) internal successors, (151), 18 states have internal predecessors, (151), 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 95 [2024-11-09 10:06:59,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:06:59,555 INFO L225 Difference]: With dead ends: 4773 [2024-11-09 10:06:59,559 INFO L226 Difference]: Without dead ends: 4773 [2024-11-09 10:06:59,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=506, Unknown=7, NotChecked=0, Total=600 [2024-11-09 10:06:59,560 INFO L432 NwaCegarLoop]: 1891 mSDtfsCounter, 2653 mSDsluCounter, 20558 mSDsCounter, 0 mSdLazyCounter, 10460 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2671 SdHoareTripleChecker+Valid, 22449 SdHoareTripleChecker+Invalid, 10487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 10460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-09 10:06:59,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2671 Valid, 22449 Invalid, 10487 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 10460 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-09 10:06:59,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4773 states. [2024-11-09 10:06:59,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4773 to 4770. [2024-11-09 10:06:59,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4770 states, 4025 states have (on average 1.7050931677018633) internal successors, (6863), 4740 states have internal predecessors, (6863), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-09 10:06:59,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4770 states to 4770 states and 6919 transitions. [2024-11-09 10:06:59,626 INFO L78 Accepts]: Start accepts. Automaton has 4770 states and 6919 transitions. Word has length 95 [2024-11-09 10:06:59,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:06:59,627 INFO L471 AbstractCegarLoop]: Abstraction has 4770 states and 6919 transitions. [2024-11-09 10:06:59,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 9.4375) internal successors, (151), 18 states have internal predecessors, (151), 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) [2024-11-09 10:06:59,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4770 states and 6919 transitions. [2024-11-09 10:06:59,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-09 10:06:59,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:06:59,629 INFO L215 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] [2024-11-09 10:06:59,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 10:06:59,831 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,SelfDestructingSolverStorable17 [2024-11-09 10:06:59,831 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:06:59,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:06:59,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1398690568, now seen corresponding path program 1 times [2024-11-09 10:06:59,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:06:59,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863902556] [2024-11-09 10:06:59,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:06:59,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:06:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:00,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 10:07:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:00,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:07:00,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:07:00,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863902556] [2024-11-09 10:07:00,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863902556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:07:00,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735367845] [2024-11-09 10:07:00,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:07:00,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:07:00,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:07:00,465 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) [2024-11-09 10:07:00,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:07:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:00,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 10:07:00,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:07:00,708 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 [2024-11-09 10:07:00,788 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 10:07:00,789 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 [2024-11-09 10:07:00,793 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 [2024-11-09 10:07:00,829 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 [2024-11-09 10:07:00,840 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 [2024-11-09 10:07:00,932 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 [2024-11-09 10:07:00,939 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 [2024-11-09 10:07:01,066 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:07:01,066 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 [2024-11-09 10:07:01,074 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 [2024-11-09 10:07:01,103 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 [2024-11-09 10:07:01,107 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 [2024-11-09 10:07:01,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:07:01,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:07:01,198 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_816 (Array Int Int)) (v_ArrVal_817 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_817) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 20) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_816) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_817 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_817) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 16))))) is different from false [2024-11-09 10:07:01,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735367845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:07:01,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:07:01,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2024-11-09 10:07:01,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897623247] [2024-11-09 10:07:01,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 10:07:01,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 10:07:01,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:07:01,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 10:07:01,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=360, Unknown=1, NotChecked=38, Total=462 [2024-11-09 10:07:01,207 INFO L87 Difference]: Start difference. First operand 4770 states and 6919 transitions. Second operand has 19 states, 16 states have (on average 9.4375) internal successors, (151), 18 states have internal predecessors, (151), 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) [2024-11-09 10:07:05,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:07:05,916 INFO L93 Difference]: Finished difference Result 4772 states and 6930 transitions. [2024-11-09 10:07:05,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:07:05,916 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 9.4375) internal successors, (151), 18 states have internal predecessors, (151), 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 95 [2024-11-09 10:07:05,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:07:05,924 INFO L225 Difference]: With dead ends: 4772 [2024-11-09 10:07:05,925 INFO L226 Difference]: Without dead ends: 4772 [2024-11-09 10:07:05,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=550, Unknown=1, NotChecked=48, Total=702 [2024-11-09 10:07:05,925 INFO L432 NwaCegarLoop]: 1897 mSDtfsCounter, 2693 mSDsluCounter, 12778 mSDsCounter, 0 mSdLazyCounter, 10053 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2711 SdHoareTripleChecker+Valid, 14675 SdHoareTripleChecker+Invalid, 10116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 10053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-09 10:07:05,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2711 Valid, 14675 Invalid, 10116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 10053 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-09 10:07:05,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4772 states. [2024-11-09 10:07:05,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4772 to 4760. [2024-11-09 10:07:05,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4760 states, 4017 states have (on average 1.7057505601194922) internal successors, (6852), 4732 states have internal predecessors, (6852), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-09 10:07:05,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4760 states to 4760 states and 6906 transitions. [2024-11-09 10:07:05,976 INFO L78 Accepts]: Start accepts. Automaton has 4760 states and 6906 transitions. Word has length 95 [2024-11-09 10:07:05,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:07:05,977 INFO L471 AbstractCegarLoop]: Abstraction has 4760 states and 6906 transitions. [2024-11-09 10:07:05,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 9.4375) internal successors, (151), 18 states have internal predecessors, (151), 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) [2024-11-09 10:07:05,977 INFO L276 IsEmpty]: Start isEmpty. Operand 4760 states and 6906 transitions. [2024-11-09 10:07:05,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 10:07:05,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:07:05,978 INFO L215 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] [2024-11-09 10:07:05,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 10:07:06,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:07:06,179 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:07:06,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:07:06,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1605417604, now seen corresponding path program 1 times [2024-11-09 10:07:06,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:07:06,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973249695] [2024-11-09 10:07:06,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:07:06,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:07:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:06,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 10:07:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:07:06,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:07:06,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973249695] [2024-11-09 10:07:06,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973249695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:07:06,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:07:06,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 10:07:06,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791201081] [2024-11-09 10:07:06,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:07:06,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 10:07:06,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:07:06,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 10:07:06,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-09 10:07:06,701 INFO L87 Difference]: Start difference. First operand 4760 states and 6906 transitions. Second operand has 14 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 states have internal predecessors, (95), 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) [2024-11-09 10:07:10,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:07:10,397 INFO L93 Difference]: Finished difference Result 4779 states and 6938 transitions. [2024-11-09 10:07:10,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 10:07:10,397 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 states have internal predecessors, (95), 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 [2024-11-09 10:07:10,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:07:10,406 INFO L225 Difference]: With dead ends: 4779 [2024-11-09 10:07:10,406 INFO L226 Difference]: Without dead ends: 4779 [2024-11-09 10:07:10,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-11-09 10:07:10,407 INFO L432 NwaCegarLoop]: 1891 mSDtfsCounter, 2667 mSDsluCounter, 16821 mSDsCounter, 0 mSdLazyCounter, 8733 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2685 SdHoareTripleChecker+Valid, 18712 SdHoareTripleChecker+Invalid, 8756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 8733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 10:07:10,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2685 Valid, 18712 Invalid, 8756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 8733 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 10:07:10,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4779 states. [2024-11-09 10:07:10,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4779 to 4775. [2024-11-09 10:07:10,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4775 states, 4031 states have (on average 1.7040436616224262) internal successors, (6869), 4745 states have internal predecessors, (6869), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-09 10:07:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4775 states to 4775 states and 6925 transitions. [2024-11-09 10:07:10,508 INFO L78 Accepts]: Start accepts. Automaton has 4775 states and 6925 transitions. Word has length 97 [2024-11-09 10:07:10,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:07:10,508 INFO L471 AbstractCegarLoop]: Abstraction has 4775 states and 6925 transitions. [2024-11-09 10:07:10,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 states have internal predecessors, (95), 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) [2024-11-09 10:07:10,509 INFO L276 IsEmpty]: Start isEmpty. Operand 4775 states and 6925 transitions. [2024-11-09 10:07:10,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 10:07:10,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:07:10,509 INFO L215 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] [2024-11-09 10:07:10,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 10:07:10,510 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:07:10,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:07:10,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1605417603, now seen corresponding path program 1 times [2024-11-09 10:07:10,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:07:10,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820560523] [2024-11-09 10:07:10,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:07:10,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:07:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:11,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 10:07:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:07:11,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:07:11,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820560523] [2024-11-09 10:07:11,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820560523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:07:11,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:07:11,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-09 10:07:11,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083362915] [2024-11-09 10:07:11,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:07:11,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:07:11,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:07:11,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:07:11,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:07:11,074 INFO L87 Difference]: Start difference. First operand 4775 states and 6925 transitions. Second operand has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2024-11-09 10:07:14,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:07:14,861 INFO L93 Difference]: Finished difference Result 4778 states and 6936 transitions. [2024-11-09 10:07:14,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 10:07:14,862 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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 [2024-11-09 10:07:14,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:07:14,869 INFO L225 Difference]: With dead ends: 4778 [2024-11-09 10:07:14,869 INFO L226 Difference]: Without dead ends: 4778 [2024-11-09 10:07:14,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-09 10:07:14,870 INFO L432 NwaCegarLoop]: 1898 mSDtfsCounter, 2683 mSDsluCounter, 11601 mSDsCounter, 0 mSdLazyCounter, 8416 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2701 SdHoareTripleChecker+Valid, 13499 SdHoareTripleChecker+Invalid, 8455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 8416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-09 10:07:14,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2701 Valid, 13499 Invalid, 8455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 8416 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-09 10:07:14,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4778 states. [2024-11-09 10:07:14,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4778 to 4775. [2024-11-09 10:07:14,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4775 states, 4031 states have (on average 1.7035475068221284) internal successors, (6867), 4745 states have internal predecessors, (6867), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-09 10:07:14,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4775 states to 4775 states and 6923 transitions. [2024-11-09 10:07:14,916 INFO L78 Accepts]: Start accepts. Automaton has 4775 states and 6923 transitions. Word has length 97 [2024-11-09 10:07:14,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:07:14,916 INFO L471 AbstractCegarLoop]: Abstraction has 4775 states and 6923 transitions. [2024-11-09 10:07:14,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2024-11-09 10:07:14,916 INFO L276 IsEmpty]: Start isEmpty. Operand 4775 states and 6923 transitions. [2024-11-09 10:07:14,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-09 10:07:14,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:07:14,917 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:07:14,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 10:07:14,917 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:07:14,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:07:14,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1382629065, now seen corresponding path program 1 times [2024-11-09 10:07:14,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:07:14,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084591360] [2024-11-09 10:07:14,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:07:14,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:07:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:15,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 10:07:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:15,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:07:15,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:07:15,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084591360] [2024-11-09 10:07:15,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084591360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:07:15,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574671727] [2024-11-09 10:07:15,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:07:15,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:07:15,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:07:15,317 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) [2024-11-09 10:07:15,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 10:07:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:15,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 10:07:15,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:07:15,628 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 [2024-11-09 10:07:15,714 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-09 10:07:15,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-09 10:07:15,741 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 [2024-11-09 10:07:15,813 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 [2024-11-09 10:07:15,925 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:07:15,925 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 [2024-11-09 10:07:15,991 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:07:15,992 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 [2024-11-09 10:07:16,003 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 [2024-11-09 10:07:16,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:07:16,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:07:16,101 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1107 (Array Int Int)) (v_ArrVal_1104 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1107))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1104)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-09 10:07:16,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574671727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:07:16,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:07:16,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2024-11-09 10:07:16,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147870652] [2024-11-09 10:07:16,103 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 10:07:16,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 10:07:16,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:07:16,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 10:07:16,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=454, Unknown=22, NotChecked=44, Total=600 [2024-11-09 10:07:16,104 INFO L87 Difference]: Start difference. First operand 4775 states and 6923 transitions. Second operand has 22 states, 19 states have (on average 8.263157894736842) internal successors, (157), 21 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) [2024-11-09 10:07:21,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:07:21,390 INFO L93 Difference]: Finished difference Result 4777 states and 6934 transitions. [2024-11-09 10:07:21,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 10:07:21,391 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 8.263157894736842) internal successors, (157), 21 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) Word has length 98 [2024-11-09 10:07:21,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:07:21,410 INFO L225 Difference]: With dead ends: 4777 [2024-11-09 10:07:21,410 INFO L226 Difference]: Without dead ends: 4777 [2024-11-09 10:07:21,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=629, Unknown=23, NotChecked=52, Total=812 [2024-11-09 10:07:21,412 INFO L432 NwaCegarLoop]: 1890 mSDtfsCounter, 2646 mSDsluCounter, 22420 mSDsCounter, 0 mSdLazyCounter, 11341 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2664 SdHoareTripleChecker+Valid, 24310 SdHoareTripleChecker+Invalid, 11364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 11341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-09 10:07:21,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2664 Valid, 24310 Invalid, 11364 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 11341 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-09 10:07:21,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2024-11-09 10:07:21,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4774. [2024-11-09 10:07:21,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4774 states, 4031 states have (on average 1.7030513520218309) internal successors, (6865), 4744 states have internal predecessors, (6865), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-09 10:07:21,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4774 states to 4774 states and 6921 transitions. [2024-11-09 10:07:21,521 INFO L78 Accepts]: Start accepts. Automaton has 4774 states and 6921 transitions. Word has length 98 [2024-11-09 10:07:21,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:07:21,522 INFO L471 AbstractCegarLoop]: Abstraction has 4774 states and 6921 transitions. [2024-11-09 10:07:21,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 8.263157894736842) internal successors, (157), 21 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) [2024-11-09 10:07:21,522 INFO L276 IsEmpty]: Start isEmpty. Operand 4774 states and 6921 transitions. [2024-11-09 10:07:21,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-09 10:07:21,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:07:21,522 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:07:21,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 10:07:21,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:07:21,724 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:07:21,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:07:21,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1382629066, now seen corresponding path program 1 times [2024-11-09 10:07:21,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:07:21,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258594040] [2024-11-09 10:07:21,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:07:21,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:07:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:22,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 10:07:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:22,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:07:22,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:07:22,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258594040] [2024-11-09 10:07:22,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258594040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:07:22,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618359046] [2024-11-09 10:07:22,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:07:22,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:07:22,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:07:22,373 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) [2024-11-09 10:07:22,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 10:07:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:22,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 10:07:22,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:07:22,611 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 [2024-11-09 10:07:22,689 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 [2024-11-09 10:07:22,694 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 10:07:22,694 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 [2024-11-09 10:07:22,714 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 [2024-11-09 10:07:22,717 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 [2024-11-09 10:07:22,792 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 [2024-11-09 10:07:22,796 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 [2024-11-09 10:07:22,896 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:07:22,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-09 10:07:22,902 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 [2024-11-09 10:07:22,966 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:07:22,966 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 [2024-11-09 10:07:22,969 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 [2024-11-09 10:07:22,981 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 [2024-11-09 10:07:22,984 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 [2024-11-09 10:07:23,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:07:23,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:07:23,048 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1264 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1264) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))) (forall ((v_ArrVal_1265 (Array Int Int)) (v_ArrVal_1264 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1264) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1265) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-09 10:07:23,057 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1264 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1264) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4))) (forall ((v_ArrVal_1265 (Array Int Int)) (v_ArrVal_1264 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1264) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1265) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2024-11-09 10:07:23,096 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1264 (Array Int Int)) (v_ArrVal_1271 (Array Int Int)) (v_ArrVal_1270 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1270) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1271) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1264) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))) (forall ((v_ArrVal_1265 (Array Int Int)) (v_ArrVal_1264 (Array Int Int)) (v_ArrVal_1271 (Array Int Int)) (v_ArrVal_1270 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1271))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (<= (+ 8 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1270) .cse1 v_ArrVal_1264) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1265) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))) is different from false [2024-11-09 10:07:23,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618359046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:07:23,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:07:23,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-11-09 10:07:23,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703769240] [2024-11-09 10:07:23,098 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 10:07:23,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 10:07:23,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:07:23,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 10:07:23,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=438, Unknown=3, NotChecked=132, Total=650 [2024-11-09 10:07:23,100 INFO L87 Difference]: Start difference. First operand 4774 states and 6921 transitions. Second operand has 21 states, 18 states have (on average 8.722222222222221) internal successors, (157), 20 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) [2024-11-09 10:07:28,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:07:28,103 INFO L93 Difference]: Finished difference Result 4776 states and 6932 transitions. [2024-11-09 10:07:28,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 10:07:28,104 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 8.722222222222221) internal successors, (157), 20 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) Word has length 98 [2024-11-09 10:07:28,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:07:28,110 INFO L225 Difference]: With dead ends: 4776 [2024-11-09 10:07:28,110 INFO L226 Difference]: Without dead ends: 4776 [2024-11-09 10:07:28,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=694, Unknown=3, NotChecked=168, Total=992 [2024-11-09 10:07:28,111 INFO L432 NwaCegarLoop]: 1896 mSDtfsCounter, 2652 mSDsluCounter, 17998 mSDsCounter, 0 mSdLazyCounter, 13021 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2670 SdHoareTripleChecker+Valid, 19894 SdHoareTripleChecker+Invalid, 13049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 13021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-09 10:07:28,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2670 Valid, 19894 Invalid, 13049 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 13021 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-09 10:07:28,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4776 states. [2024-11-09 10:07:28,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4776 to 4758. [2024-11-09 10:07:28,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4758 states, 4017 states have (on average 1.704754792133433) internal successors, (6848), 4730 states have internal predecessors, (6848), 27 states have call successors, (27), 4 states have call predecessors, (27), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-09 10:07:28,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4758 states to 4758 states and 6902 transitions. [2024-11-09 10:07:28,151 INFO L78 Accepts]: Start accepts. Automaton has 4758 states and 6902 transitions. Word has length 98 [2024-11-09 10:07:28,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:07:28,152 INFO L471 AbstractCegarLoop]: Abstraction has 4758 states and 6902 transitions. [2024-11-09 10:07:28,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 8.722222222222221) internal successors, (157), 20 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) [2024-11-09 10:07:28,152 INFO L276 IsEmpty]: Start isEmpty. Operand 4758 states and 6902 transitions. [2024-11-09 10:07:28,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-09 10:07:28,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:07:28,153 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:07:28,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 10:07:28,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:07:28,358 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:07:28,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:07:28,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1760638795, now seen corresponding path program 1 times [2024-11-09 10:07:28,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:07:28,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090713612] [2024-11-09 10:07:28,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:07:28,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:07:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:28,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 10:07:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:28,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:07:28,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:07:28,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090713612] [2024-11-09 10:07:28,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090713612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:07:28,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:07:28,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-09 10:07:28,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566187504] [2024-11-09 10:07:28,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:07:28,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:07:28,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:07:28,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:07:28,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:07:28,801 INFO L87 Difference]: Start difference. First operand 4758 states and 6902 transitions. Second operand has 15 states, 13 states have (on average 7.538461538461538) internal successors, (98), 14 states have internal predecessors, (98), 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) [2024-11-09 10:07:32,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:07:32,518 INFO L93 Difference]: Finished difference Result 4783 states and 6940 transitions. [2024-11-09 10:07:32,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 10:07:32,519 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.538461538461538) internal successors, (98), 14 states have internal predecessors, (98), 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 100 [2024-11-09 10:07:32,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:07:32,527 INFO L225 Difference]: With dead ends: 4783 [2024-11-09 10:07:32,527 INFO L226 Difference]: Without dead ends: 4783 [2024-11-09 10:07:32,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-11-09 10:07:32,528 INFO L432 NwaCegarLoop]: 1890 mSDtfsCounter, 2690 mSDsluCounter, 18687 mSDsCounter, 0 mSdLazyCounter, 9586 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2708 SdHoareTripleChecker+Valid, 20577 SdHoareTripleChecker+Invalid, 9610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 9586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 10:07:32,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2708 Valid, 20577 Invalid, 9610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 9586 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 10:07:32,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2024-11-09 10:07:32,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 4779. [2024-11-09 10:07:32,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4779 states, 4037 states have (on average 1.7020064404260589) internal successors, (6871), 4749 states have internal predecessors, (6871), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-09 10:07:32,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4779 states to 4779 states and 6927 transitions. [2024-11-09 10:07:32,575 INFO L78 Accepts]: Start accepts. Automaton has 4779 states and 6927 transitions. Word has length 100 [2024-11-09 10:07:32,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:07:32,575 INFO L471 AbstractCegarLoop]: Abstraction has 4779 states and 6927 transitions. [2024-11-09 10:07:32,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.538461538461538) internal successors, (98), 14 states have internal predecessors, (98), 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) [2024-11-09 10:07:32,576 INFO L276 IsEmpty]: Start isEmpty. Operand 4779 states and 6927 transitions. [2024-11-09 10:07:32,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-09 10:07:32,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:07:32,576 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:07:32,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-09 10:07:32,577 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:07:32,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:07:32,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1760638796, now seen corresponding path program 1 times [2024-11-09 10:07:32,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:07:32,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836609005] [2024-11-09 10:07:32,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:07:32,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:07:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:33,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 10:07:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:33,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:07:33,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:07:33,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836609005] [2024-11-09 10:07:33,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836609005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:07:33,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:07:33,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 10:07:33,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352163923] [2024-11-09 10:07:33,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:07:33,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:07:33,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:07:33,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:07:33,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:07:33,223 INFO L87 Difference]: Start difference. First operand 4779 states and 6927 transitions. Second operand has 13 states, 12 states have (on average 8.166666666666666) internal successors, (98), 12 states have internal predecessors, (98), 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) [2024-11-09 10:07:36,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:07:36,862 INFO L93 Difference]: Finished difference Result 4782 states and 6938 transitions. [2024-11-09 10:07:36,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 10:07:36,863 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.166666666666666) internal successors, (98), 12 states have internal predecessors, (98), 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 100 [2024-11-09 10:07:36,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:07:36,869 INFO L225 Difference]: With dead ends: 4782 [2024-11-09 10:07:36,870 INFO L226 Difference]: Without dead ends: 4782 [2024-11-09 10:07:36,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:07:36,871 INFO L432 NwaCegarLoop]: 1897 mSDtfsCounter, 2667 mSDsluCounter, 11975 mSDsCounter, 0 mSdLazyCounter, 8016 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2685 SdHoareTripleChecker+Valid, 13872 SdHoareTripleChecker+Invalid, 8038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 8016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 10:07:36,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2685 Valid, 13872 Invalid, 8038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 8016 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 10:07:36,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4782 states. [2024-11-09 10:07:36,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4782 to 4779. [2024-11-09 10:07:36,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4779 states, 4037 states have (on average 1.7015110230369086) internal successors, (6869), 4749 states have internal predecessors, (6869), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-09 10:07:36,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4779 states to 4779 states and 6925 transitions. [2024-11-09 10:07:36,919 INFO L78 Accepts]: Start accepts. Automaton has 4779 states and 6925 transitions. Word has length 100 [2024-11-09 10:07:36,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:07:36,919 INFO L471 AbstractCegarLoop]: Abstraction has 4779 states and 6925 transitions. [2024-11-09 10:07:36,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.166666666666666) internal successors, (98), 12 states have internal predecessors, (98), 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) [2024-11-09 10:07:36,920 INFO L276 IsEmpty]: Start isEmpty. Operand 4779 states and 6925 transitions. [2024-11-09 10:07:36,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-09 10:07:36,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:07:36,920 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:07:36,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-09 10:07:36,921 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:07:36,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:07:36,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1166778078, now seen corresponding path program 1 times [2024-11-09 10:07:36,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:07:36,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357705984] [2024-11-09 10:07:36,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:07:36,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:07:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:37,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 10:07:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:37,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:07:37,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:07:37,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357705984] [2024-11-09 10:07:37,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357705984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:07:37,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958686001] [2024-11-09 10:07:37,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:07:37,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:07:37,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:07:37,583 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) [2024-11-09 10:07:37,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 10:07:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:37,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 10:07:37,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:07:37,835 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 [2024-11-09 10:07:37,983 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-09 10:07:37,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-09 10:07:38,026 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 [2024-11-09 10:07:38,124 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 [2024-11-09 10:07:38,236 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:07:38,237 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 [2024-11-09 10:07:38,306 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:07:38,307 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 [2024-11-09 10:07:38,353 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:07:38,354 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 [2024-11-09 10:07:38,366 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 [2024-11-09 10:07:38,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:07:38,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:07:38,463 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1583 (Array Int Int)) (v_ArrVal_1582 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1582))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1583)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-09 10:07:42,588 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1586 (Array Int Int)) (v_ArrVal_1583 (Array Int Int)) (v_ArrVal_1582 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1586))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1582)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1583)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-09 10:07:42,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958686001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:07:42,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:07:42,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 23 [2024-11-09 10:07:42,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332820893] [2024-11-09 10:07:42,591 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 10:07:42,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 10:07:42,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:07:42,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 10:07:42,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=575, Unknown=30, NotChecked=102, Total=812 [2024-11-09 10:07:42,592 INFO L87 Difference]: Start difference. First operand 4779 states and 6925 transitions. Second operand has 24 states, 21 states have (on average 7.761904761904762) internal successors, (163), 23 states have internal predecessors, (163), 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) [2024-11-09 10:07:48,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 10:07:48,931 INFO L93 Difference]: Finished difference Result 4781 states and 6936 transitions. [2024-11-09 10:07:48,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 10:07:48,931 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 7.761904761904762) internal successors, (163), 23 states have internal predecessors, (163), 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 101 [2024-11-09 10:07:48,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 10:07:48,937 INFO L225 Difference]: With dead ends: 4781 [2024-11-09 10:07:48,937 INFO L226 Difference]: Without dead ends: 4781 [2024-11-09 10:07:48,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=134, Invalid=774, Unknown=30, NotChecked=118, Total=1056 [2024-11-09 10:07:48,938 INFO L432 NwaCegarLoop]: 1889 mSDtfsCounter, 2641 mSDsluCounter, 22404 mSDsCounter, 0 mSdLazyCounter, 11325 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2659 SdHoareTripleChecker+Valid, 24293 SdHoareTripleChecker+Invalid, 11351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 11325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-09 10:07:48,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2659 Valid, 24293 Invalid, 11351 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 11325 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-09 10:07:48,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2024-11-09 10:07:48,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 4778. [2024-11-09 10:07:48,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4778 states, 4037 states have (on average 1.7010156056477583) internal successors, (6867), 4748 states have internal predecessors, (6867), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (29), 26 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-09 10:07:48,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 6923 transitions. [2024-11-09 10:07:48,981 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 6923 transitions. Word has length 101 [2024-11-09 10:07:48,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 10:07:48,981 INFO L471 AbstractCegarLoop]: Abstraction has 4778 states and 6923 transitions. [2024-11-09 10:07:48,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 7.761904761904762) internal successors, (163), 23 states have internal predecessors, (163), 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) [2024-11-09 10:07:48,982 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 6923 transitions. [2024-11-09 10:07:48,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-09 10:07:48,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 10:07:48,982 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:07:48,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 10:07:49,186 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,SelfDestructingSolverStorable25 [2024-11-09 10:07:49,187 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-09 10:07:49,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:07:49,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1166778079, now seen corresponding path program 1 times [2024-11-09 10:07:49,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:07:49,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917959761] [2024-11-09 10:07:49,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:07:49,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:07:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:50,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 10:07:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:50,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:07:50,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:07:50,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917959761] [2024-11-09 10:07:50,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917959761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:07:50,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551155377] [2024-11-09 10:07:50,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:07:50,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:07:50,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:07:50,197 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) [2024-11-09 10:07:50,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 10:07:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:07:50,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 10:07:50,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:07:50,467 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 [2024-11-09 10:07:50,563 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 10:07:50,563 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 [2024-11-09 10:07:50,570 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 [2024-11-09 10:07:50,584 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 [2024-11-09 10:07:50,589 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 [2024-11-09 10:07:50,629 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 [2024-11-09 10:07:50,632 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 [2024-11-09 10:07:50,714 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:07:50,715 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 [2024-11-09 10:07:50,720 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 [2024-11-09 10:07:50,775 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:07:50,776 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 [2024-11-09 10:07:50,781 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 [2024-11-09 10:07:50,830 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 10:07:50,830 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 [2024-11-09 10:07:50,834 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 [2024-11-09 10:07:50,847 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 [2024-11-09 10:07:50,851 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 [2024-11-09 10:07:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:07:50,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:07:50,953 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1758 (Array Int Int)) (v_ArrVal_1757 (Array Int Int))) (<= (+ 12 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1757) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1758) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_1757 (Array Int Int))) (<= 0 (+ 8 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1757) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2024-11-09 10:07:50,968 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1758 (Array Int Int)) (v_ArrVal_1757 (Array Int Int)) (v_ArrVal_1756 (Array Int Int)) (v_ArrVal_1755 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1756))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1755) .cse0 v_ArrVal_1757) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 12) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_1758) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1757 (Array Int Int)) (v_ArrVal_1756 (Array Int Int)) (v_ArrVal_1755 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1755) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1756) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1757) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8))))) is different from false [2024-11-09 10:07:51,059 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1758 (Array Int Int)) (v_ArrVal_1757 (Array Int Int)) (v_ArrVal_1756 (Array Int Int)) (v_ArrVal_1755 (Array Int Int)) (v_ArrVal_1764 (Array Int Int)) (v_ArrVal_1763 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1764))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_1756))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1763) .cse0 v_ArrVal_1755) .cse1 v_ArrVal_1757) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 12) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_1758) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_1757 (Array Int Int)) (v_ArrVal_1756 (Array Int Int)) (v_ArrVal_1755 (Array Int Int)) (v_ArrVal_1764 (Array Int Int)) (v_ArrVal_1763 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1764))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1763) .cse5 v_ArrVal_1755) (select (select (store .cse6 .cse5 v_ArrVal_1756) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1757))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 8))))) is different from false [2024-11-09 10:07:51,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551155377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:07:51,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:07:51,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 18 [2024-11-09 10:07:51,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066454053] [2024-11-09 10:07:51,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 10:07:51,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 10:07:51,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:07:51,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 10:07:51,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=418, Unknown=15, NotChecked=132, Total=650 [2024-11-09 10:07:51,063 INFO L87 Difference]: Start difference. First operand 4778 states and 6923 transitions. Second operand has 19 states, 17 states have (on average 9.058823529411764) internal successors, (154), 18 states have internal predecessors, (154), 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)