./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f 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_SAX_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 1c32e831c11e67575bf9fc4420a056c0795572e7218bcd99a0067a1a2caea6f7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 17:37:48,186 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 17:37:48,254 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 17:37:48,261 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 17:37:48,262 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 17:37:48,297 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 17:37:48,298 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 17:37:48,298 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 17:37:48,299 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 17:37:48,300 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 17:37:48,301 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 17:37:48,302 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 17:37:48,302 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 17:37:48,303 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 17:37:48,305 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 17:37:48,305 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 17:37:48,306 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 17:37:48,306 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 17:37:48,306 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 17:37:48,306 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 17:37:48,307 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 17:37:48,310 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 17:37:48,310 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 17:37:48,311 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 17:37:48,311 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 17:37:48,311 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 17:37:48,311 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 17:37:48,312 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 17:37:48,312 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 17:37:48,312 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 17:37:48,312 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 17:37:48,313 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 17:37:48,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 17:37:48,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:37:48,313 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 17:37:48,314 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 17:37:48,314 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 17:37:48,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 17:37:48,315 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 17:37:48,315 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 17:37:48,315 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 17:37:48,315 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 17:37:48,316 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c32e831c11e67575bf9fc4420a056c0795572e7218bcd99a0067a1a2caea6f7 [2024-11-10 17:37:48,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 17:37:48,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 17:37:48,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 17:37:48,614 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 17:37:48,615 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 17:37:48,616 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i [2024-11-10 17:37:50,067 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 17:37:50,354 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 17:37:50,354 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i [2024-11-10 17:37:50,373 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51e5d5998/edbcca14a3fd40189c3512abdd3c2404/FLAGc5355d4e0 [2024-11-10 17:37:50,384 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51e5d5998/edbcca14a3fd40189c3512abdd3c2404 [2024-11-10 17:37:50,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 17:37:50,386 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 17:37:50,388 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 17:37:50,388 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 17:37:50,393 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 17:37:50,393 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:37:50" (1/1) ... [2024-11-10 17:37:50,394 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25853934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:50, skipping insertion in model container [2024-11-10 17:37:50,394 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:37:50" (1/1) ... [2024-11-10 17:37:50,458 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 17:37:50,937 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:50,978 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:50,984 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:50,991 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:50,997 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:51,038 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:51,041 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:51,043 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:51,051 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:51,082 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:51,086 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:51,088 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:51,092 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:51,111 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:51,115 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:51,117 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:51,118 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:51,137 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:51,138 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:51,142 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:51,143 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:51,162 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:51,163 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:51,166 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:51,167 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:37:51,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:37:51,191 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 17:37:51,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:37:51,364 INFO L204 MainTranslator]: Completed translation [2024-11-10 17:37:51,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:51 WrapperNode [2024-11-10 17:37:51,365 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 17:37:51,366 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 17:37:51,367 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 17:37:51,367 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 17:37:51,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:51" (1/1) ... [2024-11-10 17:37:51,424 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:51" (1/1) ... [2024-11-10 17:37:51,595 INFO L138 Inliner]: procedures = 177, calls = 507, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3362 [2024-11-10 17:37:51,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 17:37:51,596 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 17:37:51,597 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 17:37:51,597 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 17:37:51,616 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:51" (1/1) ... [2024-11-10 17:37:51,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:51" (1/1) ... [2024-11-10 17:37:51,636 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:51" (1/1) ... [2024-11-10 17:37:51,815 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]. [2024-11-10 17:37:51,816 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:51" (1/1) ... [2024-11-10 17:37:51,816 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:51" (1/1) ... [2024-11-10 17:37:51,871 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:51" (1/1) ... [2024-11-10 17:37:51,877 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:51" (1/1) ... [2024-11-10 17:37:51,886 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:51" (1/1) ... [2024-11-10 17:37:51,901 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:51" (1/1) ... [2024-11-10 17:37:51,923 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 17:37:51,924 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 17:37:51,925 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 17:37:51,925 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 17:37:51,926 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:51" (1/1) ... [2024-11-10 17:37:51,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:37:51,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:37:51,963 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) [2024-11-10 17:37:51,966 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 [2024-11-10 17:37:52,013 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-10 17:37:52,014 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-10 17:37:52,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 17:37:52,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 17:37:52,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 17:37:52,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-10 17:37:52,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-10 17:37:52,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 17:37:52,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 17:37:52,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 17:37:52,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-10 17:37:52,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-10 17:37:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-10 17:37:52,018 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-10 17:37:52,018 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-10 17:37:52,018 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-10 17:37:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 17:37:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 17:37:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 17:37:52,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 17:37:52,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-10 17:37:52,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 17:37:52,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 17:37:52,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 17:37:52,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-10 17:37:52,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 17:37:52,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 17:37:52,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 17:37:52,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 17:37:52,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 17:37:52,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 17:37:52,321 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 17:37:52,323 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 17:37:55,993 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2024-11-10 17:37:56,308 INFO L? ?]: Removed 2487 outVars from TransFormulas that were not future-live. [2024-11-10 17:37:56,308 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 17:37:56,434 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 17:37:56,434 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-10 17:37:56,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:37:56 BoogieIcfgContainer [2024-11-10 17:37:56,435 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 17:37:56,439 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 17:37:56,439 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 17:37:56,442 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 17:37:56,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:37:50" (1/3) ... [2024-11-10 17:37:56,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c996ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:37:56, skipping insertion in model container [2024-11-10 17:37:56,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:37:51" (2/3) ... [2024-11-10 17:37:56,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c996ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:37:56, skipping insertion in model container [2024-11-10 17:37:56,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:37:56" (3/3) ... [2024-11-10 17:37:56,444 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test10-1.i [2024-11-10 17:37:56,459 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 17:37:56,460 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 986 error locations. [2024-11-10 17:37:56,556 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:37:56,562 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;@e272061, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:37:56,562 INFO L334 AbstractCegarLoop]: Starting to check reachability of 986 error locations. [2024-11-10 17:37:56,573 INFO L276 IsEmpty]: Start isEmpty. Operand has 2697 states, 1699 states have (on average 1.9505591524426134) internal successors, (3314), 2683 states have internal predecessors, (3314), 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) [2024-11-10 17:37:56,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-10 17:37:56,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:37:56,578 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-10 17:37:56,579 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr983REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:37:56,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:37:56,584 INFO L85 PathProgramCache]: Analyzing trace with hash 3466530, now seen corresponding path program 1 times [2024-11-10 17:37:56,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:37:56,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056304149] [2024-11-10 17:37:56,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:37:56,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:37:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:37:56,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:37:56,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:37:56,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056304149] [2024-11-10 17:37:56,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056304149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:37:56,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:37:56,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:37:56,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240656290] [2024-11-10 17:37:56,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:37:56,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:37:56,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:37:56,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:37:56,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:37:56,882 INFO L87 Difference]: Start difference. First operand has 2697 states, 1699 states have (on average 1.9505591524426134) internal successors, (3314), 2683 states have internal predecessors, (3314), 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) [2024-11-10 17:37:58,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:37:58,559 INFO L93 Difference]: Finished difference Result 3290 states and 3861 transitions. [2024-11-10 17:37:58,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:37:58,562 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 [2024-11-10 17:37:58,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:37:58,593 INFO L225 Difference]: With dead ends: 3290 [2024-11-10 17:37:58,593 INFO L226 Difference]: Without dead ends: 3287 [2024-11-10 17:37:58,594 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 [2024-11-10 17:37:58,597 INFO L432 NwaCegarLoop]: 2120 mSDtfsCounter, 2912 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2922 SdHoareTripleChecker+Valid, 2644 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-10 17:37:58,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2922 Valid, 2644 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-10 17:37:58,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2024-11-10 17:37:58,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 2936. [2024-11-10 17:37:58,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 1966 states have (on average 1.8453713123092574) internal successors, (3628), 2920 states have internal predecessors, (3628), 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) [2024-11-10 17:37:58,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 3660 transitions. [2024-11-10 17:37:58,732 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 3660 transitions. Word has length 3 [2024-11-10 17:37:58,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:37:58,733 INFO L471 AbstractCegarLoop]: Abstraction has 2936 states and 3660 transitions. [2024-11-10 17:37:58,733 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) [2024-11-10 17:37:58,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 3660 transitions. [2024-11-10 17:37:58,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-10 17:37:58,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:37:58,734 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-10 17:37:58,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 17:37:58,734 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr984REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:37:58,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:37:58,735 INFO L85 PathProgramCache]: Analyzing trace with hash 3466531, now seen corresponding path program 1 times [2024-11-10 17:37:58,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:37:58,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662039189] [2024-11-10 17:37:58,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:37:58,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:37:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:37:58,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:37:58,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:37:58,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662039189] [2024-11-10 17:37:58,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662039189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:37:58,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:37:58,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:37:58,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589308335] [2024-11-10 17:37:58,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:37:58,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:37:58,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:37:58,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:37:58,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:37:58,848 INFO L87 Difference]: Start difference. First operand 2936 states and 3660 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) [2024-11-10 17:38:00,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:38:00,639 INFO L93 Difference]: Finished difference Result 4134 states and 5162 transitions. [2024-11-10 17:38:00,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:38:00,642 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 [2024-11-10 17:38:00,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:38:00,660 INFO L225 Difference]: With dead ends: 4134 [2024-11-10 17:38:00,661 INFO L226 Difference]: Without dead ends: 4134 [2024-11-10 17:38:00,661 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 [2024-11-10 17:38:00,663 INFO L432 NwaCegarLoop]: 2671 mSDtfsCounter, 1496 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 4707 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-10 17:38:00,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 4707 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-10 17:38:00,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2024-11-10 17:38:00,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 3806. [2024-11-10 17:38:00,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3806 states, 2834 states have (on average 1.808045165843331) internal successors, (5124), 3787 states have internal predecessors, (5124), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-10 17:38:00,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3806 states to 3806 states and 5162 transitions. [2024-11-10 17:38:00,750 INFO L78 Accepts]: Start accepts. Automaton has 3806 states and 5162 transitions. Word has length 3 [2024-11-10 17:38:00,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:38:00,751 INFO L471 AbstractCegarLoop]: Abstraction has 3806 states and 5162 transitions. [2024-11-10 17:38:00,751 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) [2024-11-10 17:38:00,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3806 states and 5162 transitions. [2024-11-10 17:38:00,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-10 17:38:00,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:38:00,752 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:38:00,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 17:38:00,752 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr980REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:38:00,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:38:00,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1025058789, now seen corresponding path program 1 times [2024-11-10 17:38:00,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:38:00,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817788285] [2024-11-10 17:38:00,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:00,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:38:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:00,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:00,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:38:00,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817788285] [2024-11-10 17:38:00,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817788285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:38:00,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:38:00,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:38:00,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881874502] [2024-11-10 17:38:00,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:38:00,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 17:38:00,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:38:00,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 17:38:00,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:38:00,971 INFO L87 Difference]: Start difference. First operand 3806 states and 5162 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2024-11-10 17:38:05,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:38:05,233 INFO L93 Difference]: Finished difference Result 7114 states and 8694 transitions. [2024-11-10 17:38:05,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 17:38:05,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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 [2024-11-10 17:38:05,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:38:05,256 INFO L225 Difference]: With dead ends: 7114 [2024-11-10 17:38:05,257 INFO L226 Difference]: Without dead ends: 7114 [2024-11-10 17:38:05,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:38:05,258 INFO L432 NwaCegarLoop]: 2512 mSDtfsCounter, 9699 mSDsluCounter, 3196 mSDsCounter, 0 mSdLazyCounter, 4357 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9702 SdHoareTripleChecker+Valid, 5708 SdHoareTripleChecker+Invalid, 4419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 4357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-10 17:38:05,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9702 Valid, 5708 Invalid, 4419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 4357 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-10 17:38:05,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7114 states. [2024-11-10 17:38:05,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7114 to 4844. [2024-11-10 17:38:05,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4844 states, 3872 states have (on average 1.8403925619834711) internal successors, (7126), 4819 states have internal predecessors, (7126), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-10 17:38:05,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4844 states to 4844 states and 7176 transitions. [2024-11-10 17:38:05,367 INFO L78 Accepts]: Start accepts. Automaton has 4844 states and 7176 transitions. Word has length 8 [2024-11-10 17:38:05,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:38:05,368 INFO L471 AbstractCegarLoop]: Abstraction has 4844 states and 7176 transitions. [2024-11-10 17:38:05,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2024-11-10 17:38:05,368 INFO L276 IsEmpty]: Start isEmpty. Operand 4844 states and 7176 transitions. [2024-11-10 17:38:05,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-10 17:38:05,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:38:05,369 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:38:05,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 17:38:05,369 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr977REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:38:05,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:38:05,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1712048008, now seen corresponding path program 1 times [2024-11-10 17:38:05,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:38:05,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817880208] [2024-11-10 17:38:05,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:05,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:38:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:05,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:05,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:38:05,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817880208] [2024-11-10 17:38:05,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817880208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:38:05,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:38:05,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:38:05,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899838603] [2024-11-10 17:38:05,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:38:05,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:38:05,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:38:05,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:38:05,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:38:05,458 INFO L87 Difference]: Start difference. First operand 4844 states and 7176 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:38:06,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:38:06,980 INFO L93 Difference]: Finished difference Result 5953 states and 8467 transitions. [2024-11-10 17:38:06,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:38:06,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-11-10 17:38:06,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:38:07,000 INFO L225 Difference]: With dead ends: 5953 [2024-11-10 17:38:07,000 INFO L226 Difference]: Without dead ends: 5953 [2024-11-10 17:38:07,001 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 [2024-11-10 17:38:07,003 INFO L432 NwaCegarLoop]: 3399 mSDtfsCounter, 2883 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2893 SdHoareTripleChecker+Valid, 4518 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-10 17:38:07,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2893 Valid, 4518 Invalid, 1784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-10 17:38:07,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5953 states. [2024-11-10 17:38:07,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5953 to 4752. [2024-11-10 17:38:07,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4752 states, 3872 states have (on average 1.7848657024793388) internal successors, (6911), 4727 states have internal predecessors, (6911), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-10 17:38:07,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 6961 transitions. [2024-11-10 17:38:07,101 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 6961 transitions. Word has length 9 [2024-11-10 17:38:07,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:38:07,102 INFO L471 AbstractCegarLoop]: Abstraction has 4752 states and 6961 transitions. [2024-11-10 17:38:07,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:38:07,102 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 6961 transitions. [2024-11-10 17:38:07,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-10 17:38:07,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:38:07,103 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:38:07,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 17:38:07,103 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr978REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:38:07,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:38:07,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1712048007, now seen corresponding path program 1 times [2024-11-10 17:38:07,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:38:07,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198699101] [2024-11-10 17:38:07,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:07,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:38:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:07,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:38:07,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198699101] [2024-11-10 17:38:07,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198699101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:38:07,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:38:07,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:38:07,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215418038] [2024-11-10 17:38:07,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:38:07,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:38:07,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:38:07,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:38:07,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:38:07,191 INFO L87 Difference]: Start difference. First operand 4752 states and 6961 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:38:08,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:38:08,640 INFO L93 Difference]: Finished difference Result 7560 states and 10987 transitions. [2024-11-10 17:38:08,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:38:08,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-11-10 17:38:08,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:38:08,669 INFO L225 Difference]: With dead ends: 7560 [2024-11-10 17:38:08,669 INFO L226 Difference]: Without dead ends: 7560 [2024-11-10 17:38:08,670 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 [2024-11-10 17:38:08,670 INFO L432 NwaCegarLoop]: 3756 mSDtfsCounter, 2355 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2359 SdHoareTripleChecker+Valid, 5473 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-10 17:38:08,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2359 Valid, 5473 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1783 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-10 17:38:08,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7560 states. [2024-11-10 17:38:08,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7560 to 5302. [2024-11-10 17:38:08,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5302 states, 4432 states have (on average 1.776398916967509) internal successors, (7873), 5277 states have internal predecessors, (7873), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-10 17:38:08,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5302 states to 5302 states and 7923 transitions. [2024-11-10 17:38:08,779 INFO L78 Accepts]: Start accepts. Automaton has 5302 states and 7923 transitions. Word has length 9 [2024-11-10 17:38:08,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:38:08,779 INFO L471 AbstractCegarLoop]: Abstraction has 5302 states and 7923 transitions. [2024-11-10 17:38:08,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:38:08,780 INFO L276 IsEmpty]: Start isEmpty. Operand 5302 states and 7923 transitions. [2024-11-10 17:38:08,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-10 17:38:08,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:38:08,780 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:38:08,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 17:38:08,781 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr345REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:38:08,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:38:08,781 INFO L85 PathProgramCache]: Analyzing trace with hash -11078433, now seen corresponding path program 1 times [2024-11-10 17:38:08,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:38:08,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460187299] [2024-11-10 17:38:08,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:08,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:38:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:08,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:08,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:38:08,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460187299] [2024-11-10 17:38:08,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460187299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:38:08,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:38:08,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:38:08,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933682335] [2024-11-10 17:38:08,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:38:08,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:38:08,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:38:08,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:38:08,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:38:08,868 INFO L87 Difference]: Start difference. First operand 5302 states and 7923 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:38:09,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:38:09,376 INFO L93 Difference]: Finished difference Result 7337 states and 10735 transitions. [2024-11-10 17:38:09,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:38:09,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-10 17:38:09,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:38:09,394 INFO L225 Difference]: With dead ends: 7337 [2024-11-10 17:38:09,394 INFO L226 Difference]: Without dead ends: 7337 [2024-11-10 17:38:09,394 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 [2024-11-10 17:38:09,397 INFO L432 NwaCegarLoop]: 3137 mSDtfsCounter, 1467 mSDsluCounter, 5909 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 9046 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 17:38:09,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 9046 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 17:38:09,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7337 states. [2024-11-10 17:38:09,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7337 to 5305. [2024-11-10 17:38:09,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5305 states, 4435 states have (on average 1.7758737316798197) internal successors, (7876), 5280 states have internal predecessors, (7876), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-10 17:38:09,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5305 states to 5305 states and 7926 transitions. [2024-11-10 17:38:09,534 INFO L78 Accepts]: Start accepts. Automaton has 5305 states and 7926 transitions. Word has length 13 [2024-11-10 17:38:09,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:38:09,534 INFO L471 AbstractCegarLoop]: Abstraction has 5305 states and 7926 transitions. [2024-11-10 17:38:09,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:38:09,535 INFO L276 IsEmpty]: Start isEmpty. Operand 5305 states and 7926 transitions. [2024-11-10 17:38:09,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-10 17:38:09,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:38:09,536 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] [2024-11-10 17:38:09,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 17:38:09,536 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr967REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:38:09,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:38:09,537 INFO L85 PathProgramCache]: Analyzing trace with hash 260256747, now seen corresponding path program 1 times [2024-11-10 17:38:09,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:38:09,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782444637] [2024-11-10 17:38:09,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:09,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:38:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:09,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:09,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:38:09,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782444637] [2024-11-10 17:38:09,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782444637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:38:09,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:38:09,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:38:09,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069949295] [2024-11-10 17:38:09,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:38:09,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:38:09,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:38:09,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:38:09,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:38:09,593 INFO L87 Difference]: Start difference. First operand 5305 states and 7926 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:38:10,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:38:10,922 INFO L93 Difference]: Finished difference Result 5380 states and 8032 transitions. [2024-11-10 17:38:10,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:38:10,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-10 17:38:10,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:38:10,933 INFO L225 Difference]: With dead ends: 5380 [2024-11-10 17:38:10,933 INFO L226 Difference]: Without dead ends: 5380 [2024-11-10 17:38:10,933 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 [2024-11-10 17:38:10,934 INFO L432 NwaCegarLoop]: 1948 mSDtfsCounter, 3146 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 2244 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3156 SdHoareTripleChecker+Valid, 3781 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-10 17:38:10,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3156 Valid, 3781 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2244 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-10 17:38:10,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5380 states. [2024-11-10 17:38:10,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5380 to 5282. [2024-11-10 17:38:10,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5282 states, 4435 states have (on average 1.765501691093574) internal successors, (7830), 5257 states have internal predecessors, (7830), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-10 17:38:11,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 7880 transitions. [2024-11-10 17:38:11,008 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 7880 transitions. Word has length 22 [2024-11-10 17:38:11,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:38:11,009 INFO L471 AbstractCegarLoop]: Abstraction has 5282 states and 7880 transitions. [2024-11-10 17:38:11,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:38:11,009 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 7880 transitions. [2024-11-10 17:38:11,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-10 17:38:11,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:38:11,010 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] [2024-11-10 17:38:11,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 17:38:11,010 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr968REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:38:11,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:38:11,011 INFO L85 PathProgramCache]: Analyzing trace with hash 260256748, now seen corresponding path program 1 times [2024-11-10 17:38:11,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:38:11,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536329348] [2024-11-10 17:38:11,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:11,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:38:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:11,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:11,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:38:11,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536329348] [2024-11-10 17:38:11,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536329348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:38:11,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:38:11,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:38:11,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090277743] [2024-11-10 17:38:11,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:38:11,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:38:11,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:38:11,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:38:11,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:38:11,118 INFO L87 Difference]: Start difference. First operand 5282 states and 7880 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) [2024-11-10 17:38:11,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:38:11,333 INFO L93 Difference]: Finished difference Result 5144 states and 7674 transitions. [2024-11-10 17:38:11,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:38:11,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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 [2024-11-10 17:38:11,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:38:11,343 INFO L225 Difference]: With dead ends: 5144 [2024-11-10 17:38:11,343 INFO L226 Difference]: Without dead ends: 5144 [2024-11-10 17:38:11,344 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 [2024-11-10 17:38:11,344 INFO L432 NwaCegarLoop]: 2789 mSDtfsCounter, 61 mSDsluCounter, 2735 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 5524 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 17:38:11,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 5524 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 17:38:11,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5144 states. [2024-11-10 17:38:11,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5144 to 5144. [2024-11-10 17:38:11,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5144 states, 4309 states have (on average 1.7693200278486887) internal successors, (7624), 5119 states have internal predecessors, (7624), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-10 17:38:11,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5144 states to 5144 states and 7674 transitions. [2024-11-10 17:38:11,420 INFO L78 Accepts]: Start accepts. Automaton has 5144 states and 7674 transitions. Word has length 22 [2024-11-10 17:38:11,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:38:11,420 INFO L471 AbstractCegarLoop]: Abstraction has 5144 states and 7674 transitions. [2024-11-10 17:38:11,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 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) [2024-11-10 17:38:11,421 INFO L276 IsEmpty]: Start isEmpty. Operand 5144 states and 7674 transitions. [2024-11-10 17:38:11,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-10 17:38:11,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:38:11,421 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] [2024-11-10 17:38:11,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 17:38:11,422 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr659REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:38:11,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:38:11,422 INFO L85 PathProgramCache]: Analyzing trace with hash 2008294252, now seen corresponding path program 1 times [2024-11-10 17:38:11,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:38:11,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950147491] [2024-11-10 17:38:11,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:11,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:38:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:11,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:11,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:38:11,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950147491] [2024-11-10 17:38:11,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950147491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:38:11,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:38:11,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:38:11,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055701876] [2024-11-10 17:38:11,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:38:11,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:38:11,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:38:11,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:38:11,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:38:11,514 INFO L87 Difference]: Start difference. First operand 5144 states and 7674 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) [2024-11-10 17:38:11,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:38:11,919 INFO L93 Difference]: Finished difference Result 7078 states and 10356 transitions. [2024-11-10 17:38:11,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:38:11,919 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 [2024-11-10 17:38:11,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:38:11,934 INFO L225 Difference]: With dead ends: 7078 [2024-11-10 17:38:11,934 INFO L226 Difference]: Without dead ends: 7078 [2024-11-10 17:38:11,935 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 [2024-11-10 17:38:11,937 INFO L432 NwaCegarLoop]: 3024 mSDtfsCounter, 1330 mSDsluCounter, 5679 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 8703 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 17:38:11,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1336 Valid, 8703 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 17:38:11,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7078 states. [2024-11-10 17:38:11,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7078 to 5154. [2024-11-10 17:38:12,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5154 states, 4319 states have (on average 1.767538782125492) internal successors, (7634), 5129 states have internal predecessors, (7634), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-10 17:38:12,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5154 states to 5154 states and 7684 transitions. [2024-11-10 17:38:12,015 INFO L78 Accepts]: Start accepts. Automaton has 5154 states and 7684 transitions. Word has length 22 [2024-11-10 17:38:12,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:38:12,015 INFO L471 AbstractCegarLoop]: Abstraction has 5154 states and 7684 transitions. [2024-11-10 17:38:12,017 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) [2024-11-10 17:38:12,017 INFO L276 IsEmpty]: Start isEmpty. Operand 5154 states and 7684 transitions. [2024-11-10 17:38:12,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-10 17:38:12,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:38:12,018 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] [2024-11-10 17:38:12,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 17:38:12,018 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr944REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:38:12,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:38:12,018 INFO L85 PathProgramCache]: Analyzing trace with hash 998586895, now seen corresponding path program 1 times [2024-11-10 17:38:12,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:38:12,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30391907] [2024-11-10 17:38:12,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:12,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:38:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:12,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:12,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:38:12,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30391907] [2024-11-10 17:38:12,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30391907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:38:12,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:38:12,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:38:12,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591374056] [2024-11-10 17:38:12,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:38:12,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:38:12,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:38:12,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:38:12,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:38:12,094 INFO L87 Difference]: Start difference. First operand 5154 states and 7684 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:38:12,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:38:12,433 INFO L93 Difference]: Finished difference Result 5131 states and 7640 transitions. [2024-11-10 17:38:12,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 17:38:12,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2024-11-10 17:38:12,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:38:12,446 INFO L225 Difference]: With dead ends: 5131 [2024-11-10 17:38:12,446 INFO L226 Difference]: Without dead ends: 5131 [2024-11-10 17:38:12,446 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 [2024-11-10 17:38:12,447 INFO L432 NwaCegarLoop]: 2751 mSDtfsCounter, 45 mSDsluCounter, 5478 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 8229 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 17:38:12,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 8229 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 17:38:12,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5131 states. [2024-11-10 17:38:12,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5131 to 5131. [2024-11-10 17:38:12,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 4303 states have (on average 1.763885661166628) internal successors, (7590), 5106 states have internal predecessors, (7590), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-10 17:38:12,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 7640 transitions. [2024-11-10 17:38:12,535 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 7640 transitions. Word has length 24 [2024-11-10 17:38:12,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:38:12,536 INFO L471 AbstractCegarLoop]: Abstraction has 5131 states and 7640 transitions. [2024-11-10 17:38:12,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:38:12,536 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 7640 transitions. [2024-11-10 17:38:12,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-10 17:38:12,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:38:12,537 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] [2024-11-10 17:38:12,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 17:38:12,537 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr930REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:38:12,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:38:12,538 INFO L85 PathProgramCache]: Analyzing trace with hash 344062853, now seen corresponding path program 1 times [2024-11-10 17:38:12,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:38:12,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292033096] [2024-11-10 17:38:12,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:12,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:38:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:12,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:38:12,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292033096] [2024-11-10 17:38:12,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292033096] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:38:12,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:38:12,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:38:12,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210958626] [2024-11-10 17:38:12,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:38:12,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:38:12,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:38:12,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:38:12,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:38:12,693 INFO L87 Difference]: Start difference. First operand 5131 states and 7640 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:38:14,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:38:14,535 INFO L93 Difference]: Finished difference Result 7483 states and 10848 transitions. [2024-11-10 17:38:14,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:38:14,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2024-11-10 17:38:14,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:38:14,548 INFO L225 Difference]: With dead ends: 7483 [2024-11-10 17:38:14,548 INFO L226 Difference]: Without dead ends: 7483 [2024-11-10 17:38:14,548 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 [2024-11-10 17:38:14,549 INFO L432 NwaCegarLoop]: 2227 mSDtfsCounter, 2354 mSDsluCounter, 3521 mSDsCounter, 0 mSdLazyCounter, 2709 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2358 SdHoareTripleChecker+Valid, 5748 SdHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-10 17:38:14,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2358 Valid, 5748 Invalid, 2712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2709 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-10 17:38:14,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7483 states. [2024-11-10 17:38:14,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7483 to 5127. [2024-11-10 17:38:14,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5127 states, 4303 states have (on average 1.762026493144318) internal successors, (7582), 5102 states have internal predecessors, (7582), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-10 17:38:14,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 7632 transitions. [2024-11-10 17:38:14,610 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 7632 transitions. Word has length 38 [2024-11-10 17:38:14,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:38:14,611 INFO L471 AbstractCegarLoop]: Abstraction has 5127 states and 7632 transitions. [2024-11-10 17:38:14,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:38:14,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 7632 transitions. [2024-11-10 17:38:14,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-10 17:38:14,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:38:14,617 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] [2024-11-10 17:38:14,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 17:38:14,617 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr915REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:38:14,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:38:14,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1148214010, now seen corresponding path program 1 times [2024-11-10 17:38:14,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:38:14,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964930906] [2024-11-10 17:38:14,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:14,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:38:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:14,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:14,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:38:14,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964930906] [2024-11-10 17:38:14,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964930906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:38:14,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:38:14,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:38:14,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808953748] [2024-11-10 17:38:14,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:38:14,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:38:14,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:38:14,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:38:14,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:38:14,765 INFO L87 Difference]: Start difference. First operand 5127 states and 7632 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:38:15,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:38:15,039 INFO L93 Difference]: Finished difference Result 5115 states and 7612 transitions. [2024-11-10 17:38:15,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 17:38:15,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-10 17:38:15,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:38:15,048 INFO L225 Difference]: With dead ends: 5115 [2024-11-10 17:38:15,048 INFO L226 Difference]: Without dead ends: 5115 [2024-11-10 17:38:15,048 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 [2024-11-10 17:38:15,049 INFO L432 NwaCegarLoop]: 2749 mSDtfsCounter, 21 mSDsluCounter, 5466 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 8215 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 17:38:15,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 8215 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 17:38:15,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5115 states. [2024-11-10 17:38:15,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5115 to 5115. [2024-11-10 17:38:15,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 4291 states have (on average 1.7622931717548358) internal successors, (7562), 5090 states have internal predecessors, (7562), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-10 17:38:15,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 7612 transitions. [2024-11-10 17:38:15,110 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 7612 transitions. Word has length 73 [2024-11-10 17:38:15,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:38:15,110 INFO L471 AbstractCegarLoop]: Abstraction has 5115 states and 7612 transitions. [2024-11-10 17:38:15,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:38:15,110 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 7612 transitions. [2024-11-10 17:38:15,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-10 17:38:15,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:38:15,111 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] [2024-11-10 17:38:15,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 17:38:15,112 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr915REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:38:15,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:38:15,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2044010690, now seen corresponding path program 1 times [2024-11-10 17:38:15,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:38:15,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232997957] [2024-11-10 17:38:15,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:15,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:38:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:15,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:15,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:38:15,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232997957] [2024-11-10 17:38:15,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232997957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:38:15,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:38:15,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:38:15,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113448441] [2024-11-10 17:38:15,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:38:15,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:38:15,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:38:15,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:38:15,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:38:15,223 INFO L87 Difference]: Start difference. First operand 5115 states and 7612 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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) [2024-11-10 17:38:15,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:38:15,544 INFO L93 Difference]: Finished difference Result 6648 states and 9820 transitions. [2024-11-10 17:38:15,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:38:15,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 [2024-11-10 17:38:15,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:38:15,555 INFO L225 Difference]: With dead ends: 6648 [2024-11-10 17:38:15,555 INFO L226 Difference]: Without dead ends: 6648 [2024-11-10 17:38:15,555 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 [2024-11-10 17:38:15,556 INFO L432 NwaCegarLoop]: 2766 mSDtfsCounter, 1097 mSDsluCounter, 2702 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 5468 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 17:38:15,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 5468 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 17:38:15,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6648 states. [2024-11-10 17:38:15,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6648 to 5984. [2024-11-10 17:38:15,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5984 states, 5156 states have (on average 1.7447633824670288) internal successors, (8996), 5955 states have internal predecessors, (8996), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-10 17:38:15,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5984 states to 5984 states and 9054 transitions. [2024-11-10 17:38:15,629 INFO L78 Accepts]: Start accepts. Automaton has 5984 states and 9054 transitions. Word has length 81 [2024-11-10 17:38:15,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:38:15,629 INFO L471 AbstractCegarLoop]: Abstraction has 5984 states and 9054 transitions. [2024-11-10 17:38:15,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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) [2024-11-10 17:38:15,630 INFO L276 IsEmpty]: Start isEmpty. Operand 5984 states and 9054 transitions. [2024-11-10 17:38:15,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-10 17:38:15,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:38:15,631 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] [2024-11-10 17:38:15,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 17:38:15,631 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr886REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:38:15,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:38:15,632 INFO L85 PathProgramCache]: Analyzing trace with hash 924536959, now seen corresponding path program 1 times [2024-11-10 17:38:15,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:38:15,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559805106] [2024-11-10 17:38:15,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:15,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:38:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:16,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:16,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:38:16,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559805106] [2024-11-10 17:38:16,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559805106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:38:16,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:38:16,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 17:38:16,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379562180] [2024-11-10 17:38:16,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:38:16,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 17:38:16,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:38:16,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 17:38:16,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:38:16,266 INFO L87 Difference]: Start difference. First operand 5984 states and 9054 transitions. Second operand has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:38:18,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:38:18,136 INFO L93 Difference]: Finished difference Result 5900 states and 8855 transitions. [2024-11-10 17:38:18,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 17:38:18,136 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2024-11-10 17:38:18,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:38:18,143 INFO L225 Difference]: With dead ends: 5900 [2024-11-10 17:38:18,143 INFO L226 Difference]: Without dead ends: 5900 [2024-11-10 17:38:18,143 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 [2024-11-10 17:38:18,144 INFO L432 NwaCegarLoop]: 1481 mSDtfsCounter, 2701 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2689 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2711 SdHoareTripleChecker+Valid, 2969 SdHoareTripleChecker+Invalid, 2782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-10 17:38:18,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2711 Valid, 2969 Invalid, 2782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2689 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-10 17:38:18,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5900 states. [2024-11-10 17:38:18,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5900 to 5340. [2024-11-10 17:38:18,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5340 states, 4596 states have (on average 1.7003916449086163) internal successors, (7815), 5311 states have internal predecessors, (7815), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-10 17:38:18,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5340 states to 5340 states and 7873 transitions. [2024-11-10 17:38:18,210 INFO L78 Accepts]: Start accepts. Automaton has 5340 states and 7873 transitions. Word has length 84 [2024-11-10 17:38:18,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:38:18,211 INFO L471 AbstractCegarLoop]: Abstraction has 5340 states and 7873 transitions. [2024-11-10 17:38:18,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:38:18,211 INFO L276 IsEmpty]: Start isEmpty. Operand 5340 states and 7873 transitions. [2024-11-10 17:38:18,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-10 17:38:18,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:38:18,212 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] [2024-11-10 17:38:18,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 17:38:18,212 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr879REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:38:18,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:38:18,213 INFO L85 PathProgramCache]: Analyzing trace with hash 137439817, now seen corresponding path program 1 times [2024-11-10 17:38:18,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:38:18,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739146978] [2024-11-10 17:38:18,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:18,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:38:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:18,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:38:18,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739146978] [2024-11-10 17:38:18,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739146978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:38:18,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:38:18,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:38:18,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149643054] [2024-11-10 17:38:18,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:38:18,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 17:38:18,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:38:18,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 17:38:18,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:38:18,478 INFO L87 Difference]: Start difference. First operand 5340 states and 7873 transitions. Second operand has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:38:19,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:38:19,919 INFO L93 Difference]: Finished difference Result 5339 states and 7871 transitions. [2024-11-10 17:38:19,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 17:38:19,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-11-10 17:38:19,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:38:19,925 INFO L225 Difference]: With dead ends: 5339 [2024-11-10 17:38:19,925 INFO L226 Difference]: Without dead ends: 5339 [2024-11-10 17:38:19,925 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 [2024-11-10 17:38:19,926 INFO L432 NwaCegarLoop]: 2676 mSDtfsCounter, 2 mSDsluCounter, 5537 mSDsCounter, 0 mSdLazyCounter, 2942 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8213 SdHoareTripleChecker+Invalid, 2943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-10 17:38:19,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8213 Invalid, 2943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2942 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-10 17:38:19,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5339 states. [2024-11-10 17:38:19,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5339 to 5339. [2024-11-10 17:38:19,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5339 states, 4596 states have (on average 1.6999564838990426) internal successors, (7813), 5310 states have internal predecessors, (7813), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-10 17:38:20,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5339 states to 5339 states and 7871 transitions. [2024-11-10 17:38:20,012 INFO L78 Accepts]: Start accepts. Automaton has 5339 states and 7871 transitions. Word has length 89 [2024-11-10 17:38:20,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:38:20,013 INFO L471 AbstractCegarLoop]: Abstraction has 5339 states and 7871 transitions. [2024-11-10 17:38:20,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:38:20,013 INFO L276 IsEmpty]: Start isEmpty. Operand 5339 states and 7871 transitions. [2024-11-10 17:38:20,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-10 17:38:20,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:38:20,016 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] [2024-11-10 17:38:20,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 17:38:20,017 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr880REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:38:20,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:38:20,018 INFO L85 PathProgramCache]: Analyzing trace with hash 137439818, now seen corresponding path program 1 times [2024-11-10 17:38:20,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:38:20,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502955067] [2024-11-10 17:38:20,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:20,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:38:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:20,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:20,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:38:20,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502955067] [2024-11-10 17:38:20,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502955067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:38:20,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:38:20,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:38:20,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913072387] [2024-11-10 17:38:20,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:38:20,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 17:38:20,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:38:20,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 17:38:20,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:38:20,525 INFO L87 Difference]: Start difference. First operand 5339 states and 7871 transitions. Second operand has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:38:22,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:38:22,202 INFO L93 Difference]: Finished difference Result 5338 states and 7869 transitions. [2024-11-10 17:38:22,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 17:38:22,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-11-10 17:38:22,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:38:22,208 INFO L225 Difference]: With dead ends: 5338 [2024-11-10 17:38:22,209 INFO L226 Difference]: Without dead ends: 5338 [2024-11-10 17:38:22,209 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 [2024-11-10 17:38:22,209 INFO L432 NwaCegarLoop]: 2676 mSDtfsCounter, 1 mSDsluCounter, 5517 mSDsCounter, 0 mSdLazyCounter, 2959 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8193 SdHoareTripleChecker+Invalid, 2960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-10 17:38:22,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 8193 Invalid, 2960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2959 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-10 17:38:22,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2024-11-10 17:38:22,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 5338. [2024-11-10 17:38:22,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 4594 states have (on average 1.7002612102742707) internal successors, (7811), 5309 states have internal predecessors, (7811), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-10 17:38:22,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 7869 transitions. [2024-11-10 17:38:22,276 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 7869 transitions. Word has length 89 [2024-11-10 17:38:22,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:38:22,276 INFO L471 AbstractCegarLoop]: Abstraction has 5338 states and 7869 transitions. [2024-11-10 17:38:22,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:38:22,277 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 7869 transitions. [2024-11-10 17:38:22,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-10 17:38:22,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:38:22,278 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] [2024-11-10 17:38:22,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 17:38:22,278 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr875REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:38:22,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:38:22,279 INFO L85 PathProgramCache]: Analyzing trace with hash 815649094, now seen corresponding path program 1 times [2024-11-10 17:38:22,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:38:22,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143645467] [2024-11-10 17:38:22,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:22,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:38:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:22,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-10 17:38:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:22,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:22,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:38:22,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143645467] [2024-11-10 17:38:22,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143645467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:38:22,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:38:22,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 17:38:22,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606693277] [2024-11-10 17:38:22,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:38:22,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 17:38:22,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:38:22,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 17:38:22,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-10 17:38:22,560 INFO L87 Difference]: Start difference. First operand 5338 states and 7869 transitions. Second operand has 7 states, 5 states have (on average 19.0) internal successors, (95), 6 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) [2024-11-10 17:38:24,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:38:24,905 INFO L93 Difference]: Finished difference Result 5356 states and 7904 transitions. [2024-11-10 17:38:24,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 17:38:24,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 19.0) internal successors, (95), 6 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 [2024-11-10 17:38:24,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:38:24,916 INFO L225 Difference]: With dead ends: 5356 [2024-11-10 17:38:24,916 INFO L226 Difference]: Without dead ends: 5356 [2024-11-10 17:38:24,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-10 17:38:24,917 INFO L432 NwaCegarLoop]: 2640 mSDtfsCounter, 31 mSDsluCounter, 10095 mSDsCounter, 0 mSdLazyCounter, 3965 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 12735 SdHoareTripleChecker+Invalid, 3976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-10 17:38:24,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 12735 Invalid, 3976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3965 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-10 17:38:24,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5356 states. [2024-11-10 17:38:24,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5356 to 5347. [2024-11-10 17:38:24,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5347 states, 4602 states have (on average 1.6996957844415472) internal successors, (7822), 5316 states have internal predecessors, (7822), 29 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (43), 28 states have call predecessors, (43), 29 states have call successors, (43) [2024-11-10 17:38:24,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5347 states to 5347 states and 7894 transitions. [2024-11-10 17:38:24,982 INFO L78 Accepts]: Start accepts. Automaton has 5347 states and 7894 transitions. Word has length 97 [2024-11-10 17:38:24,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:38:24,983 INFO L471 AbstractCegarLoop]: Abstraction has 5347 states and 7894 transitions. [2024-11-10 17:38:24,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 19.0) internal successors, (95), 6 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) [2024-11-10 17:38:24,983 INFO L276 IsEmpty]: Start isEmpty. Operand 5347 states and 7894 transitions. [2024-11-10 17:38:24,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-10 17:38:24,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:38:24,984 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] [2024-11-10 17:38:24,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 17:38:24,984 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr876REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:38:24,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:38:24,985 INFO L85 PathProgramCache]: Analyzing trace with hash 815649095, now seen corresponding path program 1 times [2024-11-10 17:38:24,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:38:24,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322660235] [2024-11-10 17:38:24,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:24,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:38:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:25,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-10 17:38:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:25,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:38:25,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322660235] [2024-11-10 17:38:25,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322660235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:38:25,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:38:25,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 17:38:25,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65708846] [2024-11-10 17:38:25,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:38:25,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 17:38:25,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:38:25,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 17:38:25,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 17:38:25,538 INFO L87 Difference]: Start difference. First operand 5347 states and 7894 transitions. Second operand has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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) [2024-11-10 17:38:27,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:38:27,945 INFO L93 Difference]: Finished difference Result 5347 states and 7892 transitions. [2024-11-10 17:38:27,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 17:38:27,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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 [2024-11-10 17:38:27,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:38:27,954 INFO L225 Difference]: With dead ends: 5347 [2024-11-10 17:38:27,954 INFO L226 Difference]: Without dead ends: 5347 [2024-11-10 17:38:27,955 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 [2024-11-10 17:38:27,955 INFO L432 NwaCegarLoop]: 2647 mSDtfsCounter, 26 mSDsluCounter, 10099 mSDsCounter, 0 mSdLazyCounter, 3914 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 12746 SdHoareTripleChecker+Invalid, 3923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-10 17:38:27,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 12746 Invalid, 3923 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 3914 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-10 17:38:27,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5347 states. [2024-11-10 17:38:28,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5347 to 5347. [2024-11-10 17:38:28,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5347 states, 4602 states have (on average 1.6992611907866144) internal successors, (7820), 5316 states have internal predecessors, (7820), 29 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (43), 28 states have call predecessors, (43), 29 states have call successors, (43) [2024-11-10 17:38:28,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5347 states to 5347 states and 7892 transitions. [2024-11-10 17:38:28,019 INFO L78 Accepts]: Start accepts. Automaton has 5347 states and 7892 transitions. Word has length 97 [2024-11-10 17:38:28,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:38:28,020 INFO L471 AbstractCegarLoop]: Abstraction has 5347 states and 7892 transitions. [2024-11-10 17:38:28,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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) [2024-11-10 17:38:28,020 INFO L276 IsEmpty]: Start isEmpty. Operand 5347 states and 7892 transitions. [2024-11-10 17:38:28,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-10 17:38:28,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:38:28,021 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] [2024-11-10 17:38:28,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-10 17:38:28,021 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr875REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:38:28,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:38:28,022 INFO L85 PathProgramCache]: Analyzing trace with hash -353983941, now seen corresponding path program 1 times [2024-11-10 17:38:28,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:38:28,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786500142] [2024-11-10 17:38:28,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:28,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:38:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:28,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-10 17:38:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:28,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:28,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:38:28,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786500142] [2024-11-10 17:38:28,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786500142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:38:28,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722681404] [2024-11-10 17:38:28,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:28,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:38:28,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:38:28,658 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) [2024-11-10 17:38:28,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 17:38:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:28,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-10 17:38:28,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:38:29,141 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-10 17:38:29,142 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 [2024-11-10 17:38:29,185 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 [2024-11-10 17:38:29,271 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 [2024-11-10 17:38:29,457 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-10 17:38:29,458 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 [2024-11-10 17:38:29,502 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 [2024-11-10 17:38:29,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:29,538 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:38:29,577 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_676 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_676) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-10 17:38:29,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722681404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:38:29,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 17:38:29,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2024-11-10 17:38:29,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779832688] [2024-11-10 17:38:29,579 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 17:38:29,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 17:38:29,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:38:29,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 17:38:29,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=292, Unknown=1, NotChecked=34, Total=380 [2024-11-10 17:38:29,582 INFO L87 Difference]: Start difference. First operand 5347 states and 7892 transitions. Second operand has 19 states, 16 states have (on average 7.6875) internal successors, (123), 18 states have internal predecessors, (123), 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) [2024-11-10 17:38:35,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:38:35,628 INFO L93 Difference]: Finished difference Result 5354 states and 7898 transitions. [2024-11-10 17:38:35,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 17:38:35,629 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 7.6875) internal successors, (123), 18 states have internal predecessors, (123), 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 [2024-11-10 17:38:35,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:38:35,637 INFO L225 Difference]: With dead ends: 5354 [2024-11-10 17:38:35,637 INFO L226 Difference]: Without dead ends: 5354 [2024-11-10 17:38:35,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=469, Unknown=1, NotChecked=44, Total=600 [2024-11-10 17:38:35,638 INFO L432 NwaCegarLoop]: 1823 mSDtfsCounter, 2728 mSDsluCounter, 21613 mSDsCounter, 0 mSdLazyCounter, 12812 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2746 SdHoareTripleChecker+Valid, 23436 SdHoareTripleChecker+Invalid, 12839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 12812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-10 17:38:35,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2746 Valid, 23436 Invalid, 12839 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 12812 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-10 17:38:35,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5354 states. [2024-11-10 17:38:35,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5354 to 5351. [2024-11-10 17:38:35,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5351 states, 4606 states have (on average 1.6984368215371255) internal successors, (7823), 5319 states have internal predecessors, (7823), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2024-11-10 17:38:35,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5351 states to 5351 states and 7883 transitions. [2024-11-10 17:38:35,706 INFO L78 Accepts]: Start accepts. Automaton has 5351 states and 7883 transitions. Word has length 98 [2024-11-10 17:38:35,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:38:35,707 INFO L471 AbstractCegarLoop]: Abstraction has 5351 states and 7883 transitions. [2024-11-10 17:38:35,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 7.6875) internal successors, (123), 18 states have internal predecessors, (123), 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) [2024-11-10 17:38:35,707 INFO L276 IsEmpty]: Start isEmpty. Operand 5351 states and 7883 transitions. [2024-11-10 17:38:35,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-10 17:38:35,708 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:38:35,708 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] [2024-11-10 17:38:35,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 17:38:35,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:38:35,910 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr876REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:38:35,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:38:35,910 INFO L85 PathProgramCache]: Analyzing trace with hash -353983940, now seen corresponding path program 1 times [2024-11-10 17:38:35,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:38:35,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548606889] [2024-11-10 17:38:35,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:35,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:38:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:36,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-10 17:38:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:36,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:36,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:38:36,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548606889] [2024-11-10 17:38:36,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548606889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:38:36,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403228391] [2024-11-10 17:38:36,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:36,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:38:36,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:38:36,804 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) [2024-11-10 17:38:36,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 17:38:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:37,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-10 17:38:37,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:38:37,229 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 17:38:37,230 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 [2024-11-10 17:38:37,234 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 [2024-11-10 17:38:37,245 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 [2024-11-10 17:38:37,251 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 [2024-11-10 17:38:37,311 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 [2024-11-10 17:38:37,315 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 [2024-11-10 17:38:37,415 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-10 17:38:37,416 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 [2024-11-10 17:38:37,421 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 [2024-11-10 17:38:37,450 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 [2024-11-10 17:38:37,455 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 [2024-11-10 17:38:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:37,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:38:37,549 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_825 (Array Int Int))) (<= 0 (+ 16 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_825) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_825 (Array Int Int)) (v_ArrVal_824 (Array Int Int))) (<= (+ 20 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_825) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_824) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-10 17:38:37,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403228391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:38:37,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 17:38:37,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 15 [2024-11-10 17:38:37,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550771800] [2024-11-10 17:38:37,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 17:38:37,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 17:38:37,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:38:37,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 17:38:37,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=255, Unknown=1, NotChecked=32, Total=342 [2024-11-10 17:38:37,554 INFO L87 Difference]: Start difference. First operand 5351 states and 7883 transitions. Second operand has 16 states, 13 states have (on average 9.0) internal successors, (117), 15 states have internal predecessors, (117), 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) [2024-11-10 17:38:41,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:38:41,995 INFO L93 Difference]: Finished difference Result 5353 states and 7896 transitions. [2024-11-10 17:38:41,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 17:38:41,995 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 9.0) internal successors, (117), 15 states have internal predecessors, (117), 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 [2024-11-10 17:38:41,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:38:42,002 INFO L225 Difference]: With dead ends: 5353 [2024-11-10 17:38:42,002 INFO L226 Difference]: Without dead ends: 5353 [2024-11-10 17:38:42,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=420, Unknown=1, NotChecked=42, Total=552 [2024-11-10 17:38:42,003 INFO L432 NwaCegarLoop]: 1829 mSDtfsCounter, 2723 mSDsluCounter, 11119 mSDsCounter, 0 mSdLazyCounter, 9334 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2741 SdHoareTripleChecker+Valid, 12948 SdHoareTripleChecker+Invalid, 9378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 9334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-10 17:38:42,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2741 Valid, 12948 Invalid, 9378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 9334 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-10 17:38:42,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5353 states. [2024-11-10 17:38:42,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5353 to 5341. [2024-11-10 17:38:42,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5341 states, 4598 states have (on average 1.6989995650282732) internal successors, (7812), 5311 states have internal predecessors, (7812), 29 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-10 17:38:42,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5341 states to 5341 states and 7870 transitions. [2024-11-10 17:38:42,052 INFO L78 Accepts]: Start accepts. Automaton has 5341 states and 7870 transitions. Word has length 98 [2024-11-10 17:38:42,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:38:42,053 INFO L471 AbstractCegarLoop]: Abstraction has 5341 states and 7870 transitions. [2024-11-10 17:38:42,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 9.0) internal successors, (117), 15 states have internal predecessors, (117), 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) [2024-11-10 17:38:42,053 INFO L276 IsEmpty]: Start isEmpty. Operand 5341 states and 7870 transitions. [2024-11-10 17:38:42,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-10 17:38:42,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:38:42,054 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] [2024-11-10 17:38:42,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 17:38:42,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-10 17:38:42,255 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr871REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:38:42,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:38:42,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1919821520, now seen corresponding path program 1 times [2024-11-10 17:38:42,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:38:42,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420213090] [2024-11-10 17:38:42,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:42,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:38:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:42,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-10 17:38:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:42,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:42,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:38:42,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420213090] [2024-11-10 17:38:42,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420213090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:38:42,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:38:42,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-10 17:38:42,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198404946] [2024-11-10 17:38:42,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:38:42,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 17:38:42,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:38:42,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 17:38:42,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-10 17:38:42,813 INFO L87 Difference]: Start difference. First operand 5341 states and 7870 transitions. Second operand has 14 states, 12 states have (on average 8.166666666666666) internal successors, (98), 13 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) [2024-11-10 17:38:46,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:38:46,333 INFO L93 Difference]: Finished difference Result 5360 states and 7904 transitions. [2024-11-10 17:38:46,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 17:38:46,333 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 8.166666666666666) internal successors, (98), 13 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 [2024-11-10 17:38:46,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:38:46,340 INFO L225 Difference]: With dead ends: 5360 [2024-11-10 17:38:46,341 INFO L226 Difference]: Without dead ends: 5360 [2024-11-10 17:38:46,341 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 [2024-11-10 17:38:46,342 INFO L432 NwaCegarLoop]: 1823 mSDtfsCounter, 2734 mSDsluCounter, 14411 mSDsCounter, 0 mSdLazyCounter, 8871 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2752 SdHoareTripleChecker+Valid, 16234 SdHoareTripleChecker+Invalid, 8895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 8871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-10 17:38:46,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2752 Valid, 16234 Invalid, 8895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 8871 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-10 17:38:46,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5360 states. [2024-11-10 17:38:46,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5360 to 5356. [2024-11-10 17:38:46,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5356 states, 4612 states have (on average 1.6975281873373806) internal successors, (7829), 5324 states have internal predecessors, (7829), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2024-11-10 17:38:46,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5356 states to 5356 states and 7889 transitions. [2024-11-10 17:38:46,404 INFO L78 Accepts]: Start accepts. Automaton has 5356 states and 7889 transitions. Word has length 100 [2024-11-10 17:38:46,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:38:46,404 INFO L471 AbstractCegarLoop]: Abstraction has 5356 states and 7889 transitions. [2024-11-10 17:38:46,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 8.166666666666666) internal successors, (98), 13 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) [2024-11-10 17:38:46,405 INFO L276 IsEmpty]: Start isEmpty. Operand 5356 states and 7889 transitions. [2024-11-10 17:38:46,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-10 17:38:46,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:38:46,406 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] [2024-11-10 17:38:46,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-10 17:38:46,406 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr872REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:38:46,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:38:46,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1919821519, now seen corresponding path program 1 times [2024-11-10 17:38:46,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:38:46,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305173298] [2024-11-10 17:38:46,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:46,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:38:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:47,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-10 17:38:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:47,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:47,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:38:47,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305173298] [2024-11-10 17:38:47,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305173298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:38:47,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:38:47,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-10 17:38:47,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577214265] [2024-11-10 17:38:47,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:38:47,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 17:38:47,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:38:47,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 17:38:47,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-10 17:38:47,116 INFO L87 Difference]: Start difference. First operand 5356 states and 7889 transitions. Second operand has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 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) [2024-11-10 17:38:52,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:38:52,240 INFO L93 Difference]: Finished difference Result 5359 states and 7902 transitions. [2024-11-10 17:38:52,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 17:38:52,240 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 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 [2024-11-10 17:38:52,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:38:52,248 INFO L225 Difference]: With dead ends: 5359 [2024-11-10 17:38:52,248 INFO L226 Difference]: Without dead ends: 5359 [2024-11-10 17:38:52,249 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 [2024-11-10 17:38:52,249 INFO L432 NwaCegarLoop]: 1830 mSDtfsCounter, 2726 mSDsluCounter, 14363 mSDsCounter, 0 mSdLazyCounter, 11570 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2744 SdHoareTripleChecker+Valid, 16193 SdHoareTripleChecker+Invalid, 11592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 11570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-10 17:38:52,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2744 Valid, 16193 Invalid, 11592 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 11570 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-10 17:38:52,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5359 states. [2024-11-10 17:38:52,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5359 to 5356. [2024-11-10 17:38:52,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5356 states, 4612 states have (on average 1.6970945359930616) internal successors, (7827), 5324 states have internal predecessors, (7827), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2024-11-10 17:38:52,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5356 states to 5356 states and 7887 transitions. [2024-11-10 17:38:52,312 INFO L78 Accepts]: Start accepts. Automaton has 5356 states and 7887 transitions. Word has length 100 [2024-11-10 17:38:52,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:38:52,312 INFO L471 AbstractCegarLoop]: Abstraction has 5356 states and 7887 transitions. [2024-11-10 17:38:52,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 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) [2024-11-10 17:38:52,313 INFO L276 IsEmpty]: Start isEmpty. Operand 5356 states and 7887 transitions. [2024-11-10 17:38:52,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-10 17:38:52,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:38:52,314 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] [2024-11-10 17:38:52,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-10 17:38:52,314 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr871REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:38:52,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:38:52,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1387894757, now seen corresponding path program 1 times [2024-11-10 17:38:52,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:38:52,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202193673] [2024-11-10 17:38:52,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:52,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:38:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:52,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-10 17:38:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:52,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:52,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:38:52,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202193673] [2024-11-10 17:38:52,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202193673] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:38:52,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159062268] [2024-11-10 17:38:52,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:38:52,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:38:52,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:38:52,871 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) [2024-11-10 17:38:52,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 17:38:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:38:53,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 17:38:53,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:38:53,265 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-10 17:38:53,265 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 [2024-11-10 17:38:53,297 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 [2024-11-10 17:38:53,367 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 [2024-11-10 17:38:53,498 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-10 17:38:53,499 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 [2024-11-10 17:38:53,586 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-10 17:38:53,586 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 [2024-11-10 17:38:53,601 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 [2024-11-10 17:38:53,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:38:53,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:38:53,641 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1111 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1111) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-10 17:38:53,699 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1114 (Array Int Int)) (v_ArrVal_1111 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1114))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1111)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-10 17:38:53,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159062268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:38:53,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 17:38:53,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 21 [2024-11-10 17:38:53,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597122425] [2024-11-10 17:38:53,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 17:38:53,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-10 17:38:53,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:38:53,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-10 17:38:53,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=425, Unknown=11, NotChecked=86, Total=600 [2024-11-10 17:38:53,702 INFO L87 Difference]: Start difference. First operand 5356 states and 7887 transitions. Second operand has 22 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 21 states have internal predecessors, (129), 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) [2024-11-10 17:39:00,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:39:00,176 INFO L93 Difference]: Finished difference Result 5358 states and 7900 transitions. [2024-11-10 17:39:00,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 17:39:00,176 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 21 states have internal predecessors, (129), 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 [2024-11-10 17:39:00,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:39:00,185 INFO L225 Difference]: With dead ends: 5358 [2024-11-10 17:39:00,185 INFO L226 Difference]: Without dead ends: 5358 [2024-11-10 17:39:00,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=591, Unknown=13, NotChecked=102, Total=812 [2024-11-10 17:39:00,186 INFO L432 NwaCegarLoop]: 1822 mSDtfsCounter, 2698 mSDsluCounter, 25167 mSDsCounter, 0 mSdLazyCounter, 14779 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2716 SdHoareTripleChecker+Valid, 26989 SdHoareTripleChecker+Invalid, 14804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 14779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-10 17:39:00,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2716 Valid, 26989 Invalid, 14804 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 14779 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-10 17:39:00,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5358 states. [2024-11-10 17:39:00,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5358 to 5355. [2024-11-10 17:39:00,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5355 states, 4612 states have (on average 1.6966608846487423) internal successors, (7825), 5323 states have internal predecessors, (7825), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2024-11-10 17:39:00,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5355 states to 5355 states and 7885 transitions. [2024-11-10 17:39:00,248 INFO L78 Accepts]: Start accepts. Automaton has 5355 states and 7885 transitions. Word has length 101 [2024-11-10 17:39:00,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:39:00,248 INFO L471 AbstractCegarLoop]: Abstraction has 5355 states and 7885 transitions. [2024-11-10 17:39:00,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 21 states have internal predecessors, (129), 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) [2024-11-10 17:39:00,248 INFO L276 IsEmpty]: Start isEmpty. Operand 5355 states and 7885 transitions. [2024-11-10 17:39:00,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-10 17:39:00,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:39:00,249 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] [2024-11-10 17:39:00,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 17:39:00,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:39:00,454 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr872REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2024-11-10 17:39:00,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:39:00,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1387894756, now seen corresponding path program 1 times [2024-11-10 17:39:00,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:39:00,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261199077] [2024-11-10 17:39:00,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:39:00,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:39:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat