./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-regression/test11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d0f06a1-a820-425c-9c06-e652eade6a60/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d0f06a1-a820-425c-9c06-e652eade6a60/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d0f06a1-a820-425c-9c06-e652eade6a60/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d0f06a1-a820-425c-9c06-e652eade6a60/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-regression/test11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d0f06a1-a820-425c-9c06-e652eade6a60/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d0f06a1-a820-425c-9c06-e652eade6a60/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --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 eff30860b93e12e0f427a39d6e133ecae4dea669b3383f2efa9b7561bb59ead3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:17:15,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:17:15,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:17:15,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:17:15,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:17:15,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:17:15,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:17:15,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:17:15,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:17:15,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:17:15,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:17:15,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:17:15,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:17:15,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:17:15,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:17:15,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:17:15,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:17:15,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:17:15,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:17:15,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:17:15,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:17:15,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:17:15,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:17:15,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:17:15,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:17:15,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:17:15,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:17:15,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:17:15,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:17:15,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:17:15,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:17:15,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:17:15,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:17:15,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:17:15,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:17:15,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:17:15,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:17:15,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:17:15,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:17:15,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:17:15,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:17:15,225 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d0f06a1-a820-425c-9c06-e652eade6a60/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 11:17:15,244 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:17:15,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:17:15,245 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:17:15,245 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:17:15,246 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:17:15,246 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:17:15,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:17:15,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:17:15,247 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:17:15,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:17:15,247 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:17:15,248 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:17:15,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:17:15,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:17:15,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:17:15,248 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:17:15,249 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:17:15,249 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:17:15,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:17:15,249 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:17:15,249 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:17:15,250 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:17:15,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:17:15,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:17:15,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:17:15,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:17:15,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:17:15,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:17:15,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:17:15,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:17:15,252 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d0f06a1-a820-425c-9c06-e652eade6a60/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d0f06a1-a820-425c-9c06-e652eade6a60/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eff30860b93e12e0f427a39d6e133ecae4dea669b3383f2efa9b7561bb59ead3 [2022-11-16 11:17:15,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:17:15,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:17:15,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:17:15,531 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:17:15,532 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:17:15,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d0f06a1-a820-425c-9c06-e652eade6a60/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-regression/test11.c [2022-11-16 11:17:15,606 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d0f06a1-a820-425c-9c06-e652eade6a60/bin/uautomizer-tPACEb0tL8/data/adec6f77c/f2a9c71ea8064aedbc75dda1cbc41a95/FLAGa9c32f1f2 [2022-11-16 11:17:16,133 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:17:16,134 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d0f06a1-a820-425c-9c06-e652eade6a60/sv-benchmarks/c/ldv-regression/test11.c [2022-11-16 11:17:16,140 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d0f06a1-a820-425c-9c06-e652eade6a60/bin/uautomizer-tPACEb0tL8/data/adec6f77c/f2a9c71ea8064aedbc75dda1cbc41a95/FLAGa9c32f1f2 [2022-11-16 11:17:16,489 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d0f06a1-a820-425c-9c06-e652eade6a60/bin/uautomizer-tPACEb0tL8/data/adec6f77c/f2a9c71ea8064aedbc75dda1cbc41a95 [2022-11-16 11:17:16,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:17:16,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:17:16,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:17:16,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:17:16,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:17:16,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:17:16" (1/1) ... [2022-11-16 11:17:16,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47ebb43d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:16, skipping insertion in model container [2022-11-16 11:17:16,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:17:16" (1/1) ... [2022-11-16 11:17:16,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:17:16,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:17:16,735 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d0f06a1-a820-425c-9c06-e652eade6a60/sv-benchmarks/c/ldv-regression/test11.c[823,836] [2022-11-16 11:17:16,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:17:16,748 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:17:16,769 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d0f06a1-a820-425c-9c06-e652eade6a60/sv-benchmarks/c/ldv-regression/test11.c[823,836] [2022-11-16 11:17:16,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:17:16,787 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:17:16,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:16 WrapperNode [2022-11-16 11:17:16,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:17:16,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:17:16,789 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:17:16,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:17:16,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:16" (1/1) ... [2022-11-16 11:17:16,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:16" (1/1) ... [2022-11-16 11:17:16,821 INFO L138 Inliner]: procedures = 15, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2022-11-16 11:17:16,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:17:16,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:17:16,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:17:16,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:17:16,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:16" (1/1) ... [2022-11-16 11:17:16,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:16" (1/1) ... [2022-11-16 11:17:16,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:16" (1/1) ... [2022-11-16 11:17:16,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:16" (1/1) ... [2022-11-16 11:17:16,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:16" (1/1) ... [2022-11-16 11:17:16,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:16" (1/1) ... [2022-11-16 11:17:16,841 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:16" (1/1) ... [2022-11-16 11:17:16,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:16" (1/1) ... [2022-11-16 11:17:16,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:17:16,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:17:16,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:17:16,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:17:16,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:16" (1/1) ... [2022-11-16 11:17:16,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:17:16,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d0f06a1-a820-425c-9c06-e652eade6a60/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:17:16,882 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d0f06a1-a820-425c-9c06-e652eade6a60/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:17:16,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d0f06a1-a820-425c-9c06-e652eade6a60/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:17:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:17:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:17:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:17:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:17:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:17:16,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:17:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:17:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:17:17,008 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:17:17,011 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:17:17,308 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:17:17,314 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:17:17,314 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:17:17,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:17:17 BoogieIcfgContainer [2022-11-16 11:17:17,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:17:17,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:17:17,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:17:17,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:17:17,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:17:16" (1/3) ... [2022-11-16 11:17:17,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca40df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:17:17, skipping insertion in model container [2022-11-16 11:17:17,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:17:16" (2/3) ... [2022-11-16 11:17:17,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca40df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:17:17, skipping insertion in model container [2022-11-16 11:17:17,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:17:17" (3/3) ... [2022-11-16 11:17:17,340 INFO L112 eAbstractionObserver]: Analyzing ICFG test11.c [2022-11-16 11:17:17,372 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:17:17,372 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-16 11:17:17,435 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:17:17,448 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@61d6cd5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:17:17,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-16 11:17:17,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 20 states have (on average 1.9) internal successors, (38), 34 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) [2022-11-16 11:17:17,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:17:17,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:17,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:17:17,474 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-16 11:17:17,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:17,483 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-11-16 11:17:17,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:17,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487737451] [2022-11-16 11:17:17,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:17,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:17,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:17,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:17,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487737451] [2022-11-16 11:17:17,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487737451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:17,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:17,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:17:17,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528618490] [2022-11-16 11:17:17,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:17,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:17:17,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:17,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:17:17,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:17:17,909 INFO L87 Difference]: Start difference. First operand has 35 states, 20 states have (on average 1.9) internal successors, (38), 34 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) Second operand has 4 states, 3 states have (on average 1.0) 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) [2022-11-16 11:17:17,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:17,998 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-11-16 11:17:17,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:17:18,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) 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 [2022-11-16 11:17:18,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:18,009 INFO L225 Difference]: With dead ends: 34 [2022-11-16 11:17:18,009 INFO L226 Difference]: Without dead ends: 32 [2022-11-16 11:17:18,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:17:18,016 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 30 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:18,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 23 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:17:18,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-16 11:17:18,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-16 11:17:18,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 31 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:18,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2022-11-16 11:17:18,061 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 3 [2022-11-16 11:17:18,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:18,062 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2022-11-16 11:17:18,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) 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) [2022-11-16 11:17:18,062 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2022-11-16 11:17:18,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:17:18,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:18,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:17:18,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:17:18,064 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-16 11:17:18,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:18,065 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-16 11:17:18,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:18,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136845769] [2022-11-16 11:17:18,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:18,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:18,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:18,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:18,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136845769] [2022-11-16 11:17:18,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136845769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:18,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:18,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:17:18,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121385725] [2022-11-16 11:17:18,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:18,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:17:18,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:18,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:17:18,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:17:18,285 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 4 states, 3 states have (on average 1.0) 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) [2022-11-16 11:17:18,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:18,326 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2022-11-16 11:17:18,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:17:18,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) 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 [2022-11-16 11:17:18,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:18,327 INFO L225 Difference]: With dead ends: 31 [2022-11-16 11:17:18,328 INFO L226 Difference]: Without dead ends: 31 [2022-11-16 11:17:18,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:17:18,329 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 60 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:18,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 14 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:17:18,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-16 11:17:18,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-16 11:17:18,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.736842105263158) internal successors, (33), 30 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:18,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2022-11-16 11:17:18,334 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 3 [2022-11-16 11:17:18,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:18,335 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2022-11-16 11:17:18,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) 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) [2022-11-16 11:17:18,335 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2022-11-16 11:17:18,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:17:18,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:18,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:17:18,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:17:18,336 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-16 11:17:18,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:18,337 INFO L85 PathProgramCache]: Analyzing trace with hash 28691810, now seen corresponding path program 1 times [2022-11-16 11:17:18,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:18,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701015333] [2022-11-16 11:17:18,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:18,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:18,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:18,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701015333] [2022-11-16 11:17:18,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701015333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:18,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:18,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:17:18,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818355679] [2022-11-16 11:17:18,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:18,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:17:18,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:18,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:17:18,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:17:18,441 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:18,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:18,468 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-11-16 11:17:18,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:17:18,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 11:17:18,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:18,470 INFO L225 Difference]: With dead ends: 30 [2022-11-16 11:17:18,470 INFO L226 Difference]: Without dead ends: 30 [2022-11-16 11:17:18,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:17:18,472 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:18,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 18 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:17:18,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-16 11:17:18,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-16 11:17:18,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:18,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2022-11-16 11:17:18,476 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 5 [2022-11-16 11:17:18,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:18,477 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2022-11-16 11:17:18,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:18,477 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-11-16 11:17:18,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:17:18,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:18,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 11:17:18,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:17:18,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-16 11:17:18,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:18,479 INFO L85 PathProgramCache]: Analyzing trace with hash 28691811, now seen corresponding path program 1 times [2022-11-16 11:17:18,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:18,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438342430] [2022-11-16 11:17:18,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:18,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:18,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:18,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:18,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438342430] [2022-11-16 11:17:18,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438342430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:18,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:18,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:17:18,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681294163] [2022-11-16 11:17:18,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:18,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:17:18,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:18,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:17:18,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:17:18,674 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:18,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:18,707 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-11-16 11:17:18,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:17:18,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 11:17:18,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:18,709 INFO L225 Difference]: With dead ends: 29 [2022-11-16 11:17:18,710 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 11:17:18,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:17:18,711 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:18,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 19 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:17:18,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 11:17:18,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-16 11:17:18,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.631578947368421) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:18,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-11-16 11:17:18,722 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 5 [2022-11-16 11:17:18,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:18,723 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-11-16 11:17:18,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:18,723 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-11-16 11:17:18,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:17:18,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:18,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:18,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:17:18,726 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-16 11:17:18,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:18,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1056639248, now seen corresponding path program 1 times [2022-11-16 11:17:18,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:18,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168124382] [2022-11-16 11:17:18,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:18,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:18,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:18,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:18,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168124382] [2022-11-16 11:17:18,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168124382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:18,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:18,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:17:18,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52589843] [2022-11-16 11:17:18,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:18,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:17:18,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:18,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:17:18,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:17:18,940 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:18,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:18,999 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-11-16 11:17:19,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:17:19,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 11:17:19,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:19,001 INFO L225 Difference]: With dead ends: 28 [2022-11-16 11:17:19,001 INFO L226 Difference]: Without dead ends: 28 [2022-11-16 11:17:19,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:17:19,003 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 67 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:19,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 17 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:17:19,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-16 11:17:19,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-16 11:17:19,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:19,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2022-11-16 11:17:19,007 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 10 [2022-11-16 11:17:19,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:19,007 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2022-11-16 11:17:19,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:19,007 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2022-11-16 11:17:19,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:17:19,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:19,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:19,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:17:19,009 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-16 11:17:19,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:19,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1056639249, now seen corresponding path program 1 times [2022-11-16 11:17:19,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:19,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930214976] [2022-11-16 11:17:19,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:19,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:19,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:19,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:19,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930214976] [2022-11-16 11:17:19,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930214976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:19,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:19,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:17:19,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152810778] [2022-11-16 11:17:19,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:19,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:17:19,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:19,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:17:19,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:17:19,386 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:19,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:19,610 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-11-16 11:17:19,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:17:19,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 11:17:19,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:19,611 INFO L225 Difference]: With dead ends: 27 [2022-11-16 11:17:19,611 INFO L226 Difference]: Without dead ends: 27 [2022-11-16 11:17:19,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:17:19,613 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 94 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:19,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 14 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:17:19,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-16 11:17:19,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-16 11:17:19,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:19,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-11-16 11:17:19,616 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 10 [2022-11-16 11:17:19,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:19,617 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-11-16 11:17:19,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:19,617 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-11-16 11:17:19,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:17:19,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:19,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:19,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:17:19,618 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-16 11:17:19,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:19,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1056637819, now seen corresponding path program 1 times [2022-11-16 11:17:19,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:19,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640619234] [2022-11-16 11:17:19,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:19,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:19,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:19,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:19,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640619234] [2022-11-16 11:17:19,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640619234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:19,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:19,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:17:19,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728354199] [2022-11-16 11:17:19,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:19,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:17:19,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:19,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:17:19,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:17:19,664 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:19,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:19,684 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2022-11-16 11:17:19,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:17:19,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 11:17:19,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:19,686 INFO L225 Difference]: With dead ends: 27 [2022-11-16 11:17:19,686 INFO L226 Difference]: Without dead ends: 27 [2022-11-16 11:17:19,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:17:19,687 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 30 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:19,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 36 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:17:19,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-16 11:17:19,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-16 11:17:19,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:19,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2022-11-16 11:17:19,691 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 10 [2022-11-16 11:17:19,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:19,691 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2022-11-16 11:17:19,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:19,691 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2022-11-16 11:17:19,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:17:19,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:19,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:19,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:17:19,692 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-16 11:17:19,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:19,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1603921686, now seen corresponding path program 1 times [2022-11-16 11:17:19,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:19,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304714129] [2022-11-16 11:17:19,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:19,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:19,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:19,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:19,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304714129] [2022-11-16 11:17:19,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304714129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:19,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:19,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:17:19,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828352739] [2022-11-16 11:17:19,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:19,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:17:19,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:19,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:17:19,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:17:19,738 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:19,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:19,787 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2022-11-16 11:17:19,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:17:19,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 11:17:19,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:19,788 INFO L225 Difference]: With dead ends: 37 [2022-11-16 11:17:19,788 INFO L226 Difference]: Without dead ends: 37 [2022-11-16 11:17:19,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:17:19,790 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 30 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:19,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 38 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:17:19,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-16 11:17:19,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2022-11-16 11:17:19,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:19,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-11-16 11:17:19,793 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 11 [2022-11-16 11:17:19,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:19,793 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-11-16 11:17:19,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:19,794 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-11-16 11:17:19,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:17:19,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:19,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:19,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:17:19,795 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-16 11:17:19,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:19,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1603921685, now seen corresponding path program 1 times [2022-11-16 11:17:19,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:19,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041393314] [2022-11-16 11:17:19,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:19,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:19,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:19,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:19,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041393314] [2022-11-16 11:17:19,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041393314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:19,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:19,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:17:19,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714420848] [2022-11-16 11:17:19,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:19,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:17:19,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:19,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:17:19,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:17:19,900 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:19,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:19,945 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2022-11-16 11:17:19,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:17:19,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 11:17:19,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:19,948 INFO L225 Difference]: With dead ends: 38 [2022-11-16 11:17:19,948 INFO L226 Difference]: Without dead ends: 38 [2022-11-16 11:17:19,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:17:19,950 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:19,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 43 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:17:19,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-16 11:17:19,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2022-11-16 11:17:19,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.368421052631579) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:19,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-11-16 11:17:19,953 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 11 [2022-11-16 11:17:19,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:19,953 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-11-16 11:17:19,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:19,954 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-11-16 11:17:19,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:17:19,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:19,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:19,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:17:19,955 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-16 11:17:19,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:19,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1818313375, now seen corresponding path program 1 times [2022-11-16 11:17:19,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:19,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413638412] [2022-11-16 11:17:19,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:19,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:19,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:19,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413638412] [2022-11-16 11:17:19,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413638412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:19,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:19,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:17:19,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210429590] [2022-11-16 11:17:19,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:19,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:17:19,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:19,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:17:19,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:17:19,999 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:20,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:20,018 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-11-16 11:17:20,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:17:20,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2022-11-16 11:17:20,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:20,019 INFO L225 Difference]: With dead ends: 25 [2022-11-16 11:17:20,020 INFO L226 Difference]: Without dead ends: 25 [2022-11-16 11:17:20,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:17:20,021 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 21 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:20,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 42 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:17:20,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-16 11:17:20,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-16 11:17:20,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 24 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:20,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2022-11-16 11:17:20,023 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 12 [2022-11-16 11:17:20,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:20,024 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2022-11-16 11:17:20,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:20,024 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2022-11-16 11:17:20,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 11:17:20,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:20,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:20,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:17:20,025 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-16 11:17:20,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:20,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1551514428, now seen corresponding path program 1 times [2022-11-16 11:17:20,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:20,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244652330] [2022-11-16 11:17:20,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:20,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:20,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:20,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244652330] [2022-11-16 11:17:20,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244652330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:20,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:20,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:17:20,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543212194] [2022-11-16 11:17:20,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:20,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:17:20,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:20,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:17:20,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:17:20,152 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:20,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:20,251 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2022-11-16 11:17:20,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:17:20,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2022-11-16 11:17:20,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:20,253 INFO L225 Difference]: With dead ends: 25 [2022-11-16 11:17:20,253 INFO L226 Difference]: Without dead ends: 25 [2022-11-16 11:17:20,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:17:20,255 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 17 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:20,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 81 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:17:20,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-16 11:17:20,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-16 11:17:20,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.263157894736842) internal successors, (24), 24 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) [2022-11-16 11:17:20,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2022-11-16 11:17:20,264 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 15 [2022-11-16 11:17:20,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:20,265 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2022-11-16 11:17:20,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:20,268 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2022-11-16 11:17:20,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 11:17:20,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:20,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:20,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:17:20,269 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-16 11:17:20,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:20,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1551514479, now seen corresponding path program 1 times [2022-11-16 11:17:20,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:20,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750078296] [2022-11-16 11:17:20,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:20,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:20,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:20,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750078296] [2022-11-16 11:17:20,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750078296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:20,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:20,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:17:20,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123271296] [2022-11-16 11:17:20,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:20,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:17:20,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:20,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:17:20,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:17:20,348 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:20,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:20,368 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2022-11-16 11:17:20,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:17:20,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2022-11-16 11:17:20,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:20,369 INFO L225 Difference]: With dead ends: 24 [2022-11-16 11:17:20,369 INFO L226 Difference]: Without dead ends: 24 [2022-11-16 11:17:20,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:17:20,370 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:20,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 13 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:17:20,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-16 11:17:20,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-16 11:17:20,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 23 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:20,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2022-11-16 11:17:20,375 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 15 [2022-11-16 11:17:20,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:20,376 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2022-11-16 11:17:20,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:20,376 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2022-11-16 11:17:20,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 11:17:20,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:20,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:20,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:17:20,377 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-16 11:17:20,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:20,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1551514480, now seen corresponding path program 1 times [2022-11-16 11:17:20,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:20,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027289274] [2022-11-16 11:17:20,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:20,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:20,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:20,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027289274] [2022-11-16 11:17:20,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027289274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:20,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:20,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:17:20,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580892295] [2022-11-16 11:17:20,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:20,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:17:20,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:20,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:17:20,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:17:20,481 INFO L87 Difference]: Start difference. First operand 24 states and 23 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:20,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:20,497 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2022-11-16 11:17:20,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:17:20,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2022-11-16 11:17:20,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:20,500 INFO L225 Difference]: With dead ends: 23 [2022-11-16 11:17:20,500 INFO L226 Difference]: Without dead ends: 23 [2022-11-16 11:17:20,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:17:20,502 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:20,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 14 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:17:20,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-16 11:17:20,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-16 11:17:20,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 22 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) [2022-11-16 11:17:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2022-11-16 11:17:20,516 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 15 [2022-11-16 11:17:20,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:20,517 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2022-11-16 11:17:20,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2022-11-16 11:17:20,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 11:17:20,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:20,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:20,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:17:20,518 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-16 11:17:20,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:20,518 INFO L85 PathProgramCache]: Analyzing trace with hash 852308604, now seen corresponding path program 1 times [2022-11-16 11:17:20,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:20,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902598548] [2022-11-16 11:17:20,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:20,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:20,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:20,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902598548] [2022-11-16 11:17:20,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902598548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:20,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:20,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:17:20,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414608074] [2022-11-16 11:17:20,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:20,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:17:20,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:20,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:17:20,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:17:20,586 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:20,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:20,618 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2022-11-16 11:17:20,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:17:20,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-11-16 11:17:20,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:20,624 INFO L225 Difference]: With dead ends: 22 [2022-11-16 11:17:20,625 INFO L226 Difference]: Without dead ends: 22 [2022-11-16 11:17:20,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:17:20,626 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:20,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 12 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:17:20,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-16 11:17:20,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-16 11:17:20,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:20,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2022-11-16 11:17:20,635 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 16 [2022-11-16 11:17:20,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:20,636 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2022-11-16 11:17:20,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:20,636 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2022-11-16 11:17:20,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 11:17:20,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:20,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:20,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:17:20,638 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-16 11:17:20,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:20,639 INFO L85 PathProgramCache]: Analyzing trace with hash 852308605, now seen corresponding path program 1 times [2022-11-16 11:17:20,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:20,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796889833] [2022-11-16 11:17:20,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:20,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:20,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:20,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:20,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796889833] [2022-11-16 11:17:20,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796889833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:20,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:20,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:17:20,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096908683] [2022-11-16 11:17:20,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:20,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:17:20,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:20,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:17:20,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:17:20,788 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:20,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:20,804 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2022-11-16 11:17:20,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:17:20,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-11-16 11:17:20,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:20,805 INFO L225 Difference]: With dead ends: 21 [2022-11-16 11:17:20,805 INFO L226 Difference]: Without dead ends: 21 [2022-11-16 11:17:20,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:17:20,808 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:20,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:17:20,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-16 11:17:20,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-16 11:17:20,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 20 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2022-11-16 11:17:20,820 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 16 [2022-11-16 11:17:20,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:20,820 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2022-11-16 11:17:20,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:20,820 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2022-11-16 11:17:20,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 11:17:20,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:20,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:20,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:17:20,824 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-16 11:17:20,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:20,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1270184512, now seen corresponding path program 1 times [2022-11-16 11:17:20,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:20,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375364351] [2022-11-16 11:17:20,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:20,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:20,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:20,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:20,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375364351] [2022-11-16 11:17:20,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375364351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:20,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:20,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:17:20,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606472563] [2022-11-16 11:17:20,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:20,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:17:20,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:20,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:17:20,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:17:20,931 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:20,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:20,952 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2022-11-16 11:17:20,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:17:20,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2022-11-16 11:17:20,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:20,953 INFO L225 Difference]: With dead ends: 20 [2022-11-16 11:17:20,953 INFO L226 Difference]: Without dead ends: 19 [2022-11-16 11:17:20,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:17:20,954 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:20,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 22 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:17:20,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-16 11:17:20,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-16 11:17:20,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0) internal successors, (18), 18 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:20,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2022-11-16 11:17:20,958 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 18 [2022-11-16 11:17:20,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:20,958 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2022-11-16 11:17:20,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:20,959 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2022-11-16 11:17:20,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 11:17:20,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:17:20,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:20,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:17:20,960 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2022-11-16 11:17:20,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:17:20,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1270184577, now seen corresponding path program 1 times [2022-11-16 11:17:20,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:17:20,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983781431] [2022-11-16 11:17:20,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:17:20,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:17:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:17:21,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:17:21,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:17:21,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983781431] [2022-11-16 11:17:21,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983781431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:17:21,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:17:21,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:17:21,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927782664] [2022-11-16 11:17:21,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:17:21,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:17:21,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:17:21,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:17:21,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:17:21,076 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:21,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:17:21,107 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2022-11-16 11:17:21,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:17:21,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2022-11-16 11:17:21,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:17:21,108 INFO L225 Difference]: With dead ends: 17 [2022-11-16 11:17:21,108 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 11:17:21,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:17:21,109 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 3 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:17:21,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 33 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:17:21,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 11:17:21,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 11:17:21,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 11:17:21,111 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2022-11-16 11:17:21,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:17:21,111 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 11:17:21,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:17:21,112 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 11:17:21,112 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 11:17:21,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2022-11-16 11:17:21,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2022-11-16 11:17:21,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2022-11-16 11:17:21,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2022-11-16 11:17:21,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2022-11-16 11:17:21,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2022-11-16 11:17:21,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2022-11-16 11:17:21,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2022-11-16 11:17:21,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2022-11-16 11:17:21,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2022-11-16 11:17:21,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2022-11-16 11:17:21,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2022-11-16 11:17:21,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (1 of 14 remaining) [2022-11-16 11:17:21,118 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (0 of 14 remaining) [2022-11-16 11:17:21,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:17:21,123 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:17:21,127 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:17:21,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:17:21 BoogieIcfgContainer [2022-11-16 11:17:21,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:17:21,131 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:17:21,131 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:17:21,131 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:17:21,132 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:17:17" (3/4) ... [2022-11-16 11:17:21,136 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 11:17:21,149 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-16 11:17:21,149 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-16 11:17:21,149 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-16 11:17:21,150 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 11:17:21,192 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d0f06a1-a820-425c-9c06-e652eade6a60/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:17:21,192 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:17:21,194 INFO L158 Benchmark]: Toolchain (without parser) took 4697.66ms. Allocated memory was 115.3MB in the beginning and 167.8MB in the end (delta: 52.4MB). Free memory was 77.2MB in the beginning and 50.9MB in the end (delta: 26.3MB). Peak memory consumption was 78.5MB. Max. memory is 16.1GB. [2022-11-16 11:17:21,194 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 115.3MB. Free memory is still 94.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:17:21,195 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.66ms. Allocated memory is still 115.3MB. Free memory was 77.1MB in the beginning and 90.6MB in the end (delta: -13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 11:17:21,196 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.95ms. Allocated memory is still 115.3MB. Free memory was 90.6MB in the beginning and 89.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:17:21,196 INFO L158 Benchmark]: Boogie Preprocessor took 22.14ms. Allocated memory is still 115.3MB. Free memory was 89.1MB in the beginning and 87.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:17:21,199 INFO L158 Benchmark]: RCFGBuilder took 471.14ms. Allocated memory is still 115.3MB. Free memory was 87.7MB in the beginning and 75.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 11:17:21,199 INFO L158 Benchmark]: TraceAbstraction took 3812.30ms. Allocated memory was 115.3MB in the beginning and 167.8MB in the end (delta: 52.4MB). Free memory was 74.4MB in the beginning and 54.0MB in the end (delta: 20.4MB). Peak memory consumption was 74.9MB. Max. memory is 16.1GB. [2022-11-16 11:17:21,200 INFO L158 Benchmark]: Witness Printer took 61.90ms. Allocated memory is still 167.8MB. Free memory was 54.0MB in the beginning and 50.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:17:21,205 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 115.3MB. Free memory is still 94.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.66ms. Allocated memory is still 115.3MB. Free memory was 77.1MB in the beginning and 90.6MB in the end (delta: -13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.95ms. Allocated memory is still 115.3MB. Free memory was 90.6MB in the beginning and 89.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.14ms. Allocated memory is still 115.3MB. Free memory was 89.1MB in the beginning and 87.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 471.14ms. Allocated memory is still 115.3MB. Free memory was 87.7MB in the beginning and 75.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3812.30ms. Allocated memory was 115.3MB in the beginning and 167.8MB in the end (delta: 52.4MB). Free memory was 74.4MB in the beginning and 54.0MB in the end (delta: 20.4MB). Peak memory consumption was 74.9MB. Max. memory is 16.1GB. * Witness Printer took 61.90ms. Allocated memory is still 167.8MB. Free memory was 54.0MB in the beginning and 50.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 32]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 14]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 491 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 491 mSDsluCounter, 453 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 164 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 328 IncrementalHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 289 mSDtfsCounter, 328 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 193 NumberOfCodeBlocks, 193 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 1127 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 11:17:21,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d0f06a1-a820-425c-9c06-e652eade6a60/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE