./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN --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 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 --- 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-6b4ec56 [2022-11-20 11:14:38,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:14:38,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:14:38,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:14:38,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:14:38,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:14:38,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:14:38,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:14:38,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:14:38,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:14:38,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:14:38,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:14:38,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:14:38,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:14:38,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:14:38,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:14:38,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:14:38,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:14:38,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:14:38,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:14:38,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:14:38,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:14:38,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:14:38,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:14:38,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:14:38,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:14:38,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:14:38,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:14:38,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:14:38,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:14:38,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:14:38,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:14:38,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:14:38,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:14:38,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:14:38,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:14:38,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:14:38,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:14:38,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:14:38,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:14:38,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:14:38,250 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 11:14:38,278 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:14:38,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:14:38,279 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:14:38,279 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:14:38,279 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:14:38,280 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:14:38,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:14:38,281 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:14:38,281 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:14:38,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:14:38,281 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:14:38,281 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:14:38,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:14:38,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:14:38,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:14:38,293 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:14:38,294 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:14:38,294 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:14:38,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:14:38,294 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:14:38,294 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:14:38,295 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:14:38,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:14:38,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:14:38,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:14:38,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:14:38,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:14:38,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:14:38,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:14:38,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:14:38,296 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_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 [2022-11-20 11:14:38,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:14:38,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:14:38,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:14:38,629 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:14:38,632 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:14:38,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2022-11-20 11:14:41,687 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:14:41,876 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:14:41,877 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2022-11-20 11:14:41,884 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/data/162ffcfc8/571424f3bc204ba2b8b0ab354527983e/FLAGae0f39410 [2022-11-20 11:14:41,899 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/data/162ffcfc8/571424f3bc204ba2b8b0ab354527983e [2022-11-20 11:14:41,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:14:41,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:14:41,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:14:41,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:14:41,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:14:41,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:14:41" (1/1) ... [2022-11-20 11:14:41,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eeccc96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:41, skipping insertion in model container [2022-11-20 11:14:41,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:14:41" (1/1) ... [2022-11-20 11:14:41,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:14:41,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:14:42,146 WARN L237 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_05d20db3-f92a-4571-984a-48ae9230725c/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2022-11-20 11:14:42,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:14:42,182 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:14:42,195 WARN L237 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_05d20db3-f92a-4571-984a-48ae9230725c/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2022-11-20 11:14:42,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:14:42,221 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:14:42,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:42 WrapperNode [2022-11-20 11:14:42,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:14:42,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:14:42,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:14:42,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:14:42,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:42" (1/1) ... [2022-11-20 11:14:42,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:42" (1/1) ... [2022-11-20 11:14:42,262 INFO L138 Inliner]: procedures = 18, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 158 [2022-11-20 11:14:42,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:14:42,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:14:42,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:14:42,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:14:42,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:42" (1/1) ... [2022-11-20 11:14:42,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:42" (1/1) ... [2022-11-20 11:14:42,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:42" (1/1) ... [2022-11-20 11:14:42,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:42" (1/1) ... [2022-11-20 11:14:42,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:42" (1/1) ... [2022-11-20 11:14:42,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:42" (1/1) ... [2022-11-20 11:14:42,295 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:42" (1/1) ... [2022-11-20 11:14:42,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:42" (1/1) ... [2022-11-20 11:14:42,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:14:42,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:14:42,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:14:42,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:14:42,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:42" (1/1) ... [2022-11-20 11:14:42,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:14:42,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:42,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:14:42,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:14:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:14:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:14:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:14:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:14:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:14:42,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:14:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:14:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 11:14:42,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 11:14:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:14:42,475 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:14:42,477 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:14:42,868 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:14:42,888 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:14:42,893 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-20 11:14:42,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:14:42 BoogieIcfgContainer [2022-11-20 11:14:42,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:14:42,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:14:42,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:14:42,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:14:42,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:14:41" (1/3) ... [2022-11-20 11:14:42,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389a0b0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:14:42, skipping insertion in model container [2022-11-20 11:14:42,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:42" (2/3) ... [2022-11-20 11:14:42,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389a0b0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:14:42, skipping insertion in model container [2022-11-20 11:14:42,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:14:42" (3/3) ... [2022-11-20 11:14:42,910 INFO L112 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2022-11-20 11:14:42,931 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:14:42,931 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-20 11:14:42,990 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:14:42,997 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;@711c97c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:14:42,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-20 11:14:43,001 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 59 states have (on average 1.8305084745762712) internal successors, (108), 85 states have internal predecessors, (108), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:14:43,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 11:14:43,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:43,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 11:14:43,007 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:14:43,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:43,013 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2022-11-20 11:14:43,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:43,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947989826] [2022-11-20 11:14:43,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:43,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:43,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:43,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947989826] [2022-11-20 11:14:43,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947989826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:43,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:43,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:14:43,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333931273] [2022-11-20 11:14:43,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:43,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:14:43,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:43,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:14:43,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:14:43,295 INFO L87 Difference]: Start difference. First operand has 90 states, 59 states have (on average 1.8305084745762712) internal successors, (108), 85 states have internal predecessors, (108), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:43,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:43,476 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2022-11-20 11:14:43,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:14:43,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 11:14:43,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:14:43,485 INFO L225 Difference]: With dead ends: 83 [2022-11-20 11:14:43,485 INFO L226 Difference]: Without dead ends: 81 [2022-11-20 11:14:43,487 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 [2022-11-20 11:14:43,490 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 77 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:14:43,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 74 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:14:43,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-20 11:14:43,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-11-20 11:14:43,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 58 states have (on average 1.5172413793103448) internal successors, (88), 76 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:14:43,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2022-11-20 11:14:43,534 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 4 [2022-11-20 11:14:43,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:14:43,535 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2022-11-20 11:14:43,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:43,535 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2022-11-20 11:14:43,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 11:14:43,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:43,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 11:14:43,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:14:43,537 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:14:43,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:43,538 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2022-11-20 11:14:43,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:43,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251959244] [2022-11-20 11:14:43,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:43,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:43,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:43,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:43,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251959244] [2022-11-20 11:14:43,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251959244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:43,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:43,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:14:43,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165929814] [2022-11-20 11:14:43,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:43,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:14:43,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:43,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:14:43,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:14:43,696 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:43,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:43,817 INFO L93 Difference]: Finished difference Result 85 states and 98 transitions. [2022-11-20 11:14:43,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:14:43,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-20 11:14:43,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:14:43,819 INFO L225 Difference]: With dead ends: 85 [2022-11-20 11:14:43,819 INFO L226 Difference]: Without dead ends: 85 [2022-11-20 11:14:43,820 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 [2022-11-20 11:14:43,821 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 2 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:14:43,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 140 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:14:43,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-20 11:14:43,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2022-11-20 11:14:43,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 60 states have (on average 1.5) internal successors, (90), 78 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:14:43,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2022-11-20 11:14:43,831 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 4 [2022-11-20 11:14:43,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:14:43,832 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2022-11-20 11:14:43,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:43,832 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2022-11-20 11:14:43,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 11:14:43,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:43,833 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:43,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:14:43,833 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:14:43,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:43,834 INFO L85 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2022-11-20 11:14:43,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:43,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264811704] [2022-11-20 11:14:43,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:43,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:44,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:44,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:44,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264811704] [2022-11-20 11:14:44,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264811704] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:14:44,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412756860] [2022-11-20 11:14:44,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:44,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:14:44,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:44,118 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:14:44,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:14:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:44,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:14:44,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:44,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:14:44,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:44,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:14:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:44,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412756860] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:14:44,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:14:44,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-11-20 11:14:44,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55149883] [2022-11-20 11:14:44,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:14:44,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:14:44,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:44,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:14:44,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:14:44,537 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 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) [2022-11-20 11:14:45,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:45,286 INFO L93 Difference]: Finished difference Result 326 states and 392 transitions. [2022-11-20 11:14:45,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:14:45,287 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 11:14:45,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:14:45,290 INFO L225 Difference]: With dead ends: 326 [2022-11-20 11:14:45,290 INFO L226 Difference]: Without dead ends: 326 [2022-11-20 11:14:45,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:14:45,292 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 503 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:14:45,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 429 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:14:45,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-11-20 11:14:45,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 174. [2022-11-20 11:14:45,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 143 states have (on average 1.4335664335664335) internal successors, (205), 160 states have internal predecessors, (205), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 11:14:45,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 229 transitions. [2022-11-20 11:14:45,310 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 229 transitions. Word has length 8 [2022-11-20 11:14:45,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:14:45,310 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 229 transitions. [2022-11-20 11:14:45,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 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) [2022-11-20 11:14:45,311 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 229 transitions. [2022-11-20 11:14:45,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 11:14:45,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:45,312 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:45,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:45,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:14:45,523 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:14:45,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:45,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1143818169, now seen corresponding path program 1 times [2022-11-20 11:14:45,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:45,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635731071] [2022-11-20 11:14:45,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:45,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:45,673 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 11:14:45,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:45,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635731071] [2022-11-20 11:14:45,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635731071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:45,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:45,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:14:45,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299070049] [2022-11-20 11:14:45,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:45,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:14:45,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:45,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:14:45,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:14:45,680 INFO L87 Difference]: Start difference. First operand 174 states and 229 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2022-11-20 11:14:45,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:45,722 INFO L93 Difference]: Finished difference Result 171 states and 226 transitions. [2022-11-20 11:14:45,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:14:45,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 24 [2022-11-20 11:14:45,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:14:45,726 INFO L225 Difference]: With dead ends: 171 [2022-11-20 11:14:45,727 INFO L226 Difference]: Without dead ends: 171 [2022-11-20 11:14:45,730 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 [2022-11-20 11:14:45,735 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 56 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:14:45,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 96 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:14:45,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-20 11:14:45,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-11-20 11:14:45,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 143 states have (on average 1.4125874125874125) internal successors, (202), 157 states have internal predecessors, (202), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 11:14:45,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 226 transitions. [2022-11-20 11:14:45,750 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 226 transitions. Word has length 24 [2022-11-20 11:14:45,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:14:45,751 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 226 transitions. [2022-11-20 11:14:45,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2022-11-20 11:14:45,751 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 226 transitions. [2022-11-20 11:14:45,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 11:14:45,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:45,752 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:45,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:14:45,752 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:14:45,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:45,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1143818170, now seen corresponding path program 1 times [2022-11-20 11:14:45,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:45,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205695111] [2022-11-20 11:14:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:45,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:45,934 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:45,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:45,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205695111] [2022-11-20 11:14:45,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205695111] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:14:45,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306577891] [2022-11-20 11:14:45,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:45,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:14:45,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:45,938 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:14:45,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:14:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:46,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:14:46,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:46,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:14:46,234 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:46,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306577891] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:14:46,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:14:46,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-20 11:14:46,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456174104] [2022-11-20 11:14:46,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:14:46,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:14:46,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:46,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:14:46,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:14:46,246 INFO L87 Difference]: Start difference. First operand 171 states and 226 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:46,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:46,794 INFO L93 Difference]: Finished difference Result 784 states and 948 transitions. [2022-11-20 11:14:46,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:14:46,795 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 11:14:46,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:14:46,798 INFO L225 Difference]: With dead ends: 784 [2022-11-20 11:14:46,798 INFO L226 Difference]: Without dead ends: 784 [2022-11-20 11:14:46,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:14:46,800 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 1717 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:14:46,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1747 Valid, 770 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:14:46,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-11-20 11:14:46,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 195. [2022-11-20 11:14:46,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 167 states have (on average 1.3532934131736527) internal successors, (226), 181 states have internal predecessors, (226), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 11:14:46,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 250 transitions. [2022-11-20 11:14:46,830 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 250 transitions. Word has length 24 [2022-11-20 11:14:46,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:14:46,830 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 250 transitions. [2022-11-20 11:14:46,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:46,831 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 250 transitions. [2022-11-20 11:14:46,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 11:14:46,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:46,832 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:46,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:47,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:14:47,039 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:14:47,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:47,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1405730636, now seen corresponding path program 2 times [2022-11-20 11:14:47,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:47,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880798319] [2022-11-20 11:14:47,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:47,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:47,350 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:14:47,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:47,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880798319] [2022-11-20 11:14:47,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880798319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:14:47,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323685439] [2022-11-20 11:14:47,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:14:47,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:14:47,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:47,353 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:14:47,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:14:47,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:14:47,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:14:47,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:14:47,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:47,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:14:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-20 11:14:47,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:14:47,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323685439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:47,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:14:47,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 14 [2022-11-20 11:14:47,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256101139] [2022-11-20 11:14:47,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:47,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:14:47,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:47,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:14:47,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:14:47,507 INFO L87 Difference]: Start difference. First operand 195 states and 250 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2022-11-20 11:14:47,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:47,561 INFO L93 Difference]: Finished difference Result 199 states and 254 transitions. [2022-11-20 11:14:47,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:14:47,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 48 [2022-11-20 11:14:47,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:14:47,564 INFO L225 Difference]: With dead ends: 199 [2022-11-20 11:14:47,564 INFO L226 Difference]: Without dead ends: 199 [2022-11-20 11:14:47,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:14:47,566 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 2 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:14:47,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 143 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:14:47,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-20 11:14:47,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 197. [2022-11-20 11:14:47,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 169 states have (on average 1.349112426035503) internal successors, (228), 183 states have internal predecessors, (228), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 11:14:47,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 252 transitions. [2022-11-20 11:14:47,576 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 252 transitions. Word has length 48 [2022-11-20 11:14:47,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:14:47,576 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 252 transitions. [2022-11-20 11:14:47,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2022-11-20 11:14:47,577 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 252 transitions. [2022-11-20 11:14:47,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 11:14:47,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:47,579 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:47,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:47,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 11:14:47,787 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:14:47,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:47,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1405772122, now seen corresponding path program 1 times [2022-11-20 11:14:47,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:47,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000986590] [2022-11-20 11:14:47,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:47,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:47,951 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-20 11:14:47,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:47,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000986590] [2022-11-20 11:14:47,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000986590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:47,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:14:47,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:14:47,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421485769] [2022-11-20 11:14:47,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:47,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:14:47,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:47,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:14:47,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:14:47,954 INFO L87 Difference]: Start difference. First operand 197 states and 252 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) [2022-11-20 11:14:48,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:48,009 INFO L93 Difference]: Finished difference Result 190 states and 231 transitions. [2022-11-20 11:14:48,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:14:48,009 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 48 [2022-11-20 11:14:48,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:14:48,012 INFO L225 Difference]: With dead ends: 190 [2022-11-20 11:14:48,012 INFO L226 Difference]: Without dead ends: 190 [2022-11-20 11:14:48,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:14:48,014 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 42 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:14:48,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 165 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:14:48,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-20 11:14:48,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 176. [2022-11-20 11:14:48,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 154 states have (on average 1.3311688311688312) internal successors, (205), 166 states have internal predecessors, (205), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 11:14:48,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 221 transitions. [2022-11-20 11:14:48,027 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 221 transitions. Word has length 48 [2022-11-20 11:14:48,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:14:48,028 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 221 transitions. [2022-11-20 11:14:48,028 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) [2022-11-20 11:14:48,029 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 221 transitions. [2022-11-20 11:14:48,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 11:14:48,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:48,037 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:48,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:14:48,038 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:14:48,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:48,039 INFO L85 PathProgramCache]: Analyzing trace with hash -821816881, now seen corresponding path program 1 times [2022-11-20 11:14:48,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:48,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195049113] [2022-11-20 11:14:48,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:48,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:14:48,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:48,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195049113] [2022-11-20 11:14:48,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195049113] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:14:48,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72745276] [2022-11-20 11:14:48,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:48,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:14:48,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:48,399 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:14:48,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:14:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:48,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 11:14:48,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:14:48,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:14:48,943 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:14:48,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72745276] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:14:48,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:14:48,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-11-20 11:14:48,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406227630] [2022-11-20 11:14:48,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:14:48,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 11:14:48,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:48,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 11:14:48,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:14:48,946 INFO L87 Difference]: Start difference. First operand 176 states and 221 transitions. Second operand has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:49,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:49,931 INFO L93 Difference]: Finished difference Result 1272 states and 1525 transitions. [2022-11-20 11:14:49,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 11:14:49,932 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 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 52 [2022-11-20 11:14:49,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:14:49,938 INFO L225 Difference]: With dead ends: 1272 [2022-11-20 11:14:49,938 INFO L226 Difference]: Without dead ends: 1272 [2022-11-20 11:14:49,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:14:49,940 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 2266 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:14:49,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2310 Valid, 1121 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:14:49,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2022-11-20 11:14:49,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 224. [2022-11-20 11:14:49,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 202 states have (on average 1.2524752475247525) internal successors, (253), 214 states have internal predecessors, (253), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 11:14:49,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 269 transitions. [2022-11-20 11:14:49,960 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 269 transitions. Word has length 52 [2022-11-20 11:14:49,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:14:49,961 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 269 transitions. [2022-11-20 11:14:49,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:49,962 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 269 transitions. [2022-11-20 11:14:49,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-20 11:14:49,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:49,963 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:49,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:50,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:14:50,170 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:14:50,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:50,171 INFO L85 PathProgramCache]: Analyzing trace with hash -587166477, now seen corresponding path program 2 times [2022-11-20 11:14:50,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:50,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761026342] [2022-11-20 11:14:50,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:50,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:14:51,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:51,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761026342] [2022-11-20 11:14:51,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761026342] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:14:51,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533412869] [2022-11-20 11:14:51,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:14:51,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:14:51,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:51,085 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:14:51,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:14:51,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:14:51,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:14:51,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 11:14:51,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:51,432 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:14:51,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:14:52,385 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:14:52,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533412869] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:14:52,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:14:52,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-11-20 11:14:52,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170376368] [2022-11-20 11:14:52,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:14:52,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-20 11:14:52,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:52,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-20 11:14:52,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-11-20 11:14:52,389 INFO L87 Difference]: Start difference. First operand 224 states and 269 transitions. Second operand has 49 states, 49 states have (on average 3.9591836734693877) internal successors, (194), 49 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:55,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:55,834 INFO L93 Difference]: Finished difference Result 2592 states and 3109 transitions. [2022-11-20 11:14:55,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-20 11:14:55,835 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.9591836734693877) internal successors, (194), 49 states have internal predecessors, (194), 0 states have call successors, (0), 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 100 [2022-11-20 11:14:55,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:14:55,844 INFO L225 Difference]: With dead ends: 2592 [2022-11-20 11:14:55,845 INFO L226 Difference]: Without dead ends: 2592 [2022-11-20 11:14:55,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-11-20 11:14:55,846 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 5976 mSDsluCounter, 2068 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 710 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6068 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 710 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:14:55,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6068 Valid, 2230 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [710 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 11:14:55,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2022-11-20 11:14:55,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 320. [2022-11-20 11:14:55,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 298 states have (on average 1.1711409395973154) internal successors, (349), 310 states have internal predecessors, (349), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 11:14:55,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 365 transitions. [2022-11-20 11:14:55,873 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 365 transitions. Word has length 100 [2022-11-20 11:14:55,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:14:55,874 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 365 transitions. [2022-11-20 11:14:55,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.9591836734693877) internal successors, (194), 49 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:14:55,874 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 365 transitions. [2022-11-20 11:14:55,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-20 11:14:55,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:55,876 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:55,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:56,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:14:56,083 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:14:56,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:56,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1995408581, now seen corresponding path program 3 times [2022-11-20 11:14:56,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:56,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630945974] [2022-11-20 11:14:56,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:56,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:59,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4188 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:14:59,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:59,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630945974] [2022-11-20 11:14:59,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630945974] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:14:59,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072363668] [2022-11-20 11:14:59,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:14:59,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:14:59,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:59,063 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:14:59,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:14:59,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 11:14:59,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:14:59,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:14:59,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:14:59,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:14:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4188 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2022-11-20 11:14:59,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:14:59,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072363668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:14:59,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:14:59,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [49] total 52 [2022-11-20 11:14:59,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921412709] [2022-11-20 11:14:59,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:14:59,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:14:59,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:14:59,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:14:59,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1185, Invalid=1467, Unknown=0, NotChecked=0, Total=2652 [2022-11-20 11:14:59,430 INFO L87 Difference]: Start difference. First operand 320 states and 365 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2022-11-20 11:14:59,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:14:59,523 INFO L93 Difference]: Finished difference Result 382 states and 447 transitions. [2022-11-20 11:14:59,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:14:59,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 196 [2022-11-20 11:14:59,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:14:59,526 INFO L225 Difference]: With dead ends: 382 [2022-11-20 11:14:59,526 INFO L226 Difference]: Without dead ends: 382 [2022-11-20 11:14:59,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1185, Invalid=1467, Unknown=0, NotChecked=0, Total=2652 [2022-11-20 11:14:59,528 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 135 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:14:59,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 123 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:14:59,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-20 11:14:59,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 329. [2022-11-20 11:14:59,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 308 states have (on average 1.1785714285714286) internal successors, (363), 319 states have internal predecessors, (363), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 11:14:59,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 379 transitions. [2022-11-20 11:14:59,537 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 379 transitions. Word has length 196 [2022-11-20 11:14:59,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:14:59,538 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 379 transitions. [2022-11-20 11:14:59,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2022-11-20 11:14:59,538 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 379 transitions. [2022-11-20 11:14:59,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-20 11:14:59,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:14:59,540 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:14:59,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:14:59,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:14:59,746 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:14:59,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:14:59,747 INFO L85 PathProgramCache]: Analyzing trace with hash -2032282617, now seen corresponding path program 1 times [2022-11-20 11:14:59,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:14:59,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768911961] [2022-11-20 11:14:59,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:59,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:14:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:14:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2022-11-20 11:14:59,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:14:59,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768911961] [2022-11-20 11:14:59,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768911961] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:14:59,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264283795] [2022-11-20 11:14:59,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:14:59,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:14:59,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:14:59,979 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:15:00,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:15:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:15:00,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 11:15:00,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:15:01,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:15:01,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:15:05,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:15:05,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264283795] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:15:05,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:15:05,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 49, 49] total 98 [2022-11-20 11:15:05,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091301327] [2022-11-20 11:15:05,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:15:05,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-11-20 11:15:05,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:15:05,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-11-20 11:15:05,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4565, Invalid=4941, Unknown=0, NotChecked=0, Total=9506 [2022-11-20 11:15:05,569 INFO L87 Difference]: Start difference. First operand 329 states and 379 transitions. Second operand has 98 states, 98 states have (on average 4.061224489795919) internal successors, (398), 98 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:14,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:14,868 INFO L93 Difference]: Finished difference Result 9431 states and 11520 transitions. [2022-11-20 11:16:14,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2022-11-20 11:16:14,871 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 4.061224489795919) internal successors, (398), 98 states have internal predecessors, (398), 0 states have call successors, (0), 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 198 [2022-11-20 11:16:14,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:14,910 INFO L225 Difference]: With dead ends: 9431 [2022-11-20 11:16:14,911 INFO L226 Difference]: Without dead ends: 9431 [2022-11-20 11:16:14,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19742 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=27360, Invalid=54150, Unknown=0, NotChecked=0, Total=81510 [2022-11-20 11:16:14,932 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 31289 mSDsluCounter, 4259 mSDsCounter, 0 mSdLazyCounter, 3447 mSolverCounterSat, 3623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31479 SdHoareTripleChecker+Valid, 4703 SdHoareTripleChecker+Invalid, 7070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3623 IncrementalHoareTripleChecker+Valid, 3447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:14,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31479 Valid, 4703 Invalid, 7070 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3623 Valid, 3447 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-20 11:16:14,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9431 states. [2022-11-20 11:16:15,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9431 to 571. [2022-11-20 11:16:15,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 546 states have (on average 1.13003663003663) internal successors, (617), 557 states have internal predecessors, (617), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 11:16:15,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 641 transitions. [2022-11-20 11:16:15,132 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 641 transitions. Word has length 198 [2022-11-20 11:16:15,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:15,132 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 641 transitions. [2022-11-20 11:16:15,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 4.061224489795919) internal successors, (398), 98 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:15,133 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 641 transitions. [2022-11-20 11:16:15,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2022-11-20 11:16:15,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:15,140 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:16:15,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:16:15,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:16:15,348 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:16:15,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:15,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1572474150, now seen corresponding path program 2 times [2022-11-20 11:16:15,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:15,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595853005] [2022-11-20 11:16:15,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:15,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:16,094 INFO L134 CoverageAnalysis]: Checked inductivity of 17584 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17579 trivial. 0 not checked. [2022-11-20 11:16:16,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:16,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595853005] [2022-11-20 11:16:16,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595853005] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:16:16,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581840800] [2022-11-20 11:16:16,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:16:16,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:16:16,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:16:16,099 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:16:16,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:16:16,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:16:16,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:16:16,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:16:16,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:16:16,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:16:16,409 INFO L134 CoverageAnalysis]: Checked inductivity of 17584 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17584 trivial. 0 not checked. [2022-11-20 11:16:16,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:16:16,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581840800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:16,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:16:16,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-20 11:16:16,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055658758] [2022-11-20 11:16:16,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:16,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:16:16,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:16,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:16:16,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:16:16,412 INFO L87 Difference]: Start difference. First operand 571 states and 641 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) [2022-11-20 11:16:16,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:16,487 INFO L93 Difference]: Finished difference Result 575 states and 639 transitions. [2022-11-20 11:16:16,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:16:16,488 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 394 [2022-11-20 11:16:16,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:16,491 INFO L225 Difference]: With dead ends: 575 [2022-11-20 11:16:16,491 INFO L226 Difference]: Without dead ends: 575 [2022-11-20 11:16:16,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 392 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:16:16,492 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 87 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:16,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 112 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:16:16,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-11-20 11:16:16,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 569. [2022-11-20 11:16:16,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 546 states have (on average 1.1263736263736264) internal successors, (615), 555 states have internal predecessors, (615), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 11:16:16,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 639 transitions. [2022-11-20 11:16:16,503 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 639 transitions. Word has length 394 [2022-11-20 11:16:16,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:16,504 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 639 transitions. [2022-11-20 11:16:16,504 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) [2022-11-20 11:16:16,504 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 639 transitions. [2022-11-20 11:16:16,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2022-11-20 11:16:16,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:16,511 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:16:16,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:16:16,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:16:16,718 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:16:16,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:16,718 INFO L85 PathProgramCache]: Analyzing trace with hash -369081090, now seen corresponding path program 1 times [2022-11-20 11:16:16,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:16,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346859272] [2022-11-20 11:16:16,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:16,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,363 INFO L134 CoverageAnalysis]: Checked inductivity of 17584 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17584 trivial. 0 not checked. [2022-11-20 11:16:17,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:17,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346859272] [2022-11-20 11:16:17,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346859272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:17,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:17,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:16:17,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646096623] [2022-11-20 11:16:17,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:17,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:16:17,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:17,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:16:17,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:16:17,367 INFO L87 Difference]: Start difference. First operand 569 states and 639 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2022-11-20 11:16:17,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:17,405 INFO L93 Difference]: Finished difference Result 656 states and 751 transitions. [2022-11-20 11:16:17,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:16:17,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 397 [2022-11-20 11:16:17,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:17,409 INFO L225 Difference]: With dead ends: 656 [2022-11-20 11:16:17,409 INFO L226 Difference]: Without dead ends: 656 [2022-11-20 11:16:17,409 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 [2022-11-20 11:16:17,411 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 72 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 196 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 [2022-11-20 11:16:17,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 196 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:16:17,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-11-20 11:16:17,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 563. [2022-11-20 11:16:17,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 540 states have (on average 1.112962962962963) internal successors, (601), 549 states have internal predecessors, (601), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 11:16:17,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 625 transitions. [2022-11-20 11:16:17,424 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 625 transitions. Word has length 397 [2022-11-20 11:16:17,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:17,425 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 625 transitions. [2022-11-20 11:16:17,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2022-11-20 11:16:17,425 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 625 transitions. [2022-11-20 11:16:17,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2022-11-20 11:16:17,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:17,432 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:16:17,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:16:17,432 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:16:17,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:17,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1043534557, now seen corresponding path program 1 times [2022-11-20 11:16:17,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:17,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778714045] [2022-11-20 11:16:17,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:17,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:17,811 INFO L134 CoverageAnalysis]: Checked inductivity of 17584 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17584 trivial. 0 not checked. [2022-11-20 11:16:17,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:17,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778714045] [2022-11-20 11:16:17,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778714045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:16:17,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:16:17,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:16:17,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623680547] [2022-11-20 11:16:17,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:16:17,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:16:17,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:17,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:16:17,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:16:17,815 INFO L87 Difference]: Start difference. First operand 563 states and 625 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 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) [2022-11-20 11:16:17,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:17,828 INFO L93 Difference]: Finished difference Result 418 states and 420 transitions. [2022-11-20 11:16:17,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:16:17,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 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) Word has length 402 [2022-11-20 11:16:17,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:17,831 INFO L225 Difference]: With dead ends: 418 [2022-11-20 11:16:17,831 INFO L226 Difference]: Without dead ends: 418 [2022-11-20 11:16:17,831 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 [2022-11-20 11:16:17,832 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 12 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:17,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 82 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:16:17,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-11-20 11:16:17,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2022-11-20 11:16:17,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.0071942446043165) internal successors, (420), 417 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:17,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 420 transitions. [2022-11-20 11:16:17,843 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 420 transitions. Word has length 402 [2022-11-20 11:16:17,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:17,844 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 420 transitions. [2022-11-20 11:16:17,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 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) [2022-11-20 11:16:17,844 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 420 transitions. [2022-11-20 11:16:17,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2022-11-20 11:16:17,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:17,853 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:16:17,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:16:17,854 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:16:17,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:17,854 INFO L85 PathProgramCache]: Analyzing trace with hash -831843759, now seen corresponding path program 1 times [2022-11-20 11:16:17,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:17,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825138383] [2022-11-20 11:16:17,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:17,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 17596 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:16:28,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:16:28,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825138383] [2022-11-20 11:16:28,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825138383] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:16:28,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290246424] [2022-11-20 11:16:28,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:28,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:16:28,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:16:28,131 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:16:28,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:16:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:16:28,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-20 11:16:28,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:16:29,337 INFO L134 CoverageAnalysis]: Checked inductivity of 17596 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:16:29,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:16:43,029 INFO L134 CoverageAnalysis]: Checked inductivity of 17596 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:16:43,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290246424] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:16:43,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:16:43,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2022-11-20 11:16:43,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193106590] [2022-11-20 11:16:43,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:16:43,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2022-11-20 11:16:43,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:16:43,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2022-11-20 11:16:43,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2022-11-20 11:16:43,042 INFO L87 Difference]: Start difference. First operand 418 states and 420 transitions. Second operand has 193 states, 193 states have (on average 4.072538860103627) internal successors, (786), 193 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:45,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:16:45,552 INFO L93 Difference]: Finished difference Result 802 states and 804 transitions. [2022-11-20 11:16:45,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-20 11:16:45,553 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 4.072538860103627) internal successors, (786), 193 states have internal predecessors, (786), 0 states have call successors, (0), 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 417 [2022-11-20 11:16:45,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:16:45,557 INFO L225 Difference]: With dead ends: 802 [2022-11-20 11:16:45,557 INFO L226 Difference]: Without dead ends: 802 [2022-11-20 11:16:45,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 929 GetRequests, 738 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2022-11-20 11:16:45,562 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 675 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:16:45,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 224 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 11:16:45,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-11-20 11:16:45,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 802. [2022-11-20 11:16:45,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 801 states have (on average 1.00374531835206) internal successors, (804), 801 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 804 transitions. [2022-11-20 11:16:45,578 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 804 transitions. Word has length 417 [2022-11-20 11:16:45,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:16:45,579 INFO L495 AbstractCegarLoop]: Abstraction has 802 states and 804 transitions. [2022-11-20 11:16:45,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 4.072538860103627) internal successors, (786), 193 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:16:45,580 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 804 transitions. [2022-11-20 11:16:45,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2022-11-20 11:16:45,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:16:45,610 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:16:45,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:16:45,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 11:16:45,824 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-20 11:16:45,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:16:45,825 INFO L85 PathProgramCache]: Analyzing trace with hash 633875761, now seen corresponding path program 2 times [2022-11-20 11:16:45,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:16:45,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006751644] [2022-11-20 11:16:45,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:16:45,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:16:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:20,407 INFO L134 CoverageAnalysis]: Checked inductivity of 72028 backedges. 0 proven. 72010 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:17:20,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:20,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006751644] [2022-11-20 11:17:20,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006751644] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:17:20,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262520836] [2022-11-20 11:17:20,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:17:20,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:17:20,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:17:20,419 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:17:20,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:17:20,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:17:20,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:17:20,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:17:20,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:17:26,324 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2628 Int) (|v_ULTIMATE.start_main_~#values~0#1.base_25| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_34| Int) (v_ArrVal_2627 Int)) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#set~0#1.base_34| v_ArrVal_2627))) (and (= |c_#valid| (store (store (store .cse0 |v_ULTIMATE.start_main_~#values~0#1.base_25| v_ArrVal_2628) |v_ULTIMATE.start_main_~#set~0#1.base_34| 0) |v_ULTIMATE.start_main_~#values~0#1.base_25| 0)) (= (select .cse0 |v_ULTIMATE.start_main_~#values~0#1.base_25|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#set~0#1.base_34|) 0)))) is different from true [2022-11-20 11:17:26,337 INFO L134 CoverageAnalysis]: Checked inductivity of 72028 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72028 trivial. 0 not checked. [2022-11-20 11:17:26,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:17:26,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262520836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:26,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:17:26,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [193] total 196 [2022-11-20 11:17:26,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196251836] [2022-11-20 11:17:26,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:26,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:17:26,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:26,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:17:26,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18534, Invalid=19299, Unknown=1, NotChecked=386, Total=38220 [2022-11-20 11:17:26,352 INFO L87 Difference]: Start difference. First operand 802 states and 804 transitions. Second operand has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 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) [2022-11-20 11:17:26,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:26,357 INFO L93 Difference]: Finished difference Result 801 states and 803 transitions. [2022-11-20 11:17:26,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:17:26,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 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) Word has length 801 [2022-11-20 11:17:26,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:26,359 INFO L225 Difference]: With dead ends: 801 [2022-11-20 11:17:26,359 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 11:17:26,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 993 GetRequests, 799 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=18534, Invalid=19299, Unknown=1, NotChecked=386, Total=38220 [2022-11-20 11:17:26,366 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:26,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 33 Unchecked, 0.0s Time] [2022-11-20 11:17:26,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 11:17:26,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 11:17:26,368 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) [2022-11-20 11:17:26,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:17:26,368 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 801 [2022-11-20 11:17:26,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:26,369 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:17:26,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 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) [2022-11-20 11:17:26,369 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:17:26,369 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 11:17:26,372 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 26 remaining) [2022-11-20 11:17:26,373 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 26 remaining) [2022-11-20 11:17:26,373 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 26 remaining) [2022-11-20 11:17:26,374 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 26 remaining) [2022-11-20 11:17:26,374 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 26 remaining) [2022-11-20 11:17:26,374 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 26 remaining) [2022-11-20 11:17:26,374 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 26 remaining) [2022-11-20 11:17:26,374 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 26 remaining) [2022-11-20 11:17:26,375 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 26 remaining) [2022-11-20 11:17:26,375 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 26 remaining) [2022-11-20 11:17:26,375 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 26 remaining) [2022-11-20 11:17:26,375 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 26 remaining) [2022-11-20 11:17:26,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 26 remaining) [2022-11-20 11:17:26,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 26 remaining) [2022-11-20 11:17:26,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 26 remaining) [2022-11-20 11:17:26,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 26 remaining) [2022-11-20 11:17:26,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 26 remaining) [2022-11-20 11:17:26,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 26 remaining) [2022-11-20 11:17:26,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 26 remaining) [2022-11-20 11:17:26,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 26 remaining) [2022-11-20 11:17:26,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 26 remaining) [2022-11-20 11:17:26,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 26 remaining) [2022-11-20 11:17:26,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 26 remaining) [2022-11-20 11:17:26,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 26 remaining) [2022-11-20 11:17:26,379 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK (1 of 26 remaining) [2022-11-20 11:17:26,379 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 26 remaining) [2022-11-20 11:17:26,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:17:26,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:17:26,590 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:17:26,594 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:17:26,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:17:26 BoogieIcfgContainer [2022-11-20 11:17:26,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:17:26,602 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:17:26,603 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:17:26,603 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:17:26,604 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:14:42" (3/4) ... [2022-11-20 11:17:26,607 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:17:26,618 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-20 11:17:26,628 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-20 11:17:26,629 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-20 11:17:26,629 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 11:17:26,629 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:17:26,704 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:17:26,704 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:17:26,705 INFO L158 Benchmark]: Toolchain (without parser) took 164801.72ms. Allocated memory was 117.4MB in the beginning and 2.7GB in the end (delta: 2.5GB). Free memory was 77.4MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 725.6MB. Max. memory is 16.1GB. [2022-11-20 11:17:26,707 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory was 86.1MB in the beginning and 85.9MB in the end (delta: 117.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:17:26,707 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.56ms. Allocated memory is still 117.4MB. Free memory was 77.0MB in the beginning and 84.9MB in the end (delta: -7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 11:17:26,709 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.28ms. Allocated memory is still 117.4MB. Free memory was 84.9MB in the beginning and 83.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:17:26,709 INFO L158 Benchmark]: Boogie Preprocessor took 36.76ms. Allocated memory is still 117.4MB. Free memory was 83.2MB in the beginning and 81.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:17:26,710 INFO L158 Benchmark]: RCFGBuilder took 595.38ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 62.4MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 11:17:26,710 INFO L158 Benchmark]: TraceAbstraction took 163703.75ms. Allocated memory was 117.4MB in the beginning and 2.7GB in the end (delta: 2.5GB). Free memory was 62.1MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 708.2MB. Max. memory is 16.1GB. [2022-11-20 11:17:26,711 INFO L158 Benchmark]: Witness Printer took 102.08ms. Allocated memory is still 2.7GB. Free memory was 1.9GB in the beginning and 1.9GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 11:17:26,720 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory was 86.1MB in the beginning and 85.9MB in the end (delta: 117.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.56ms. Allocated memory is still 117.4MB. Free memory was 77.0MB in the beginning and 84.9MB in the end (delta: -7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.28ms. Allocated memory is still 117.4MB. Free memory was 84.9MB in the beginning and 83.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.76ms. Allocated memory is still 117.4MB. Free memory was 83.2MB in the beginning and 81.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 595.38ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 62.4MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 163703.75ms. Allocated memory was 117.4MB in the beginning and 2.7GB in the end (delta: 2.5GB). Free memory was 62.1MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 708.2MB. Max. memory is 16.1GB. * Witness Printer took 102.08ms. Allocated memory is still 2.7GB. Free memory was 1.9GB in the beginning and 1.9GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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: -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: 27]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 13]: 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 2 procedures, 90 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 163.6s, OverallIterations: 16, TraceHistogramMax: 190, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 78.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43286 SdHoareTripleChecker+Valid, 9.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42911 mSDsluCounter, 10654 SdHoareTripleChecker+Invalid, 7.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 33 IncrementalHoareTripleChecker+Unchecked, 9035 mSDsCounter, 5089 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6491 IncrementalHoareTripleChecker+Invalid, 11613 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5089 mSolverCounterUnsat, 1619 mSDtfsCounter, 6491 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3643 GetRequests, 2805 SyntacticMatches, 1 SemanticMatches, 837 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 20803 ImplicationChecksByTransitivity, 51.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=802occurred in iteration=15, InterpolantAutomatonStates: 608, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 16 MinimizatonAttempts, 13091 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 78.5s InterpolantComputationTime, 5355 NumberOfCodeBlocks, 3963 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 6122 ConstructedInterpolants, 799 QuantifiedInterpolants, 23497 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3260 ConjunctsInSsa, 230 ConjunctsInUnsatCore, 32 InterpolantComputations, 10 PerfectInterpolantSequences, 151229/292225 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 26 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 11:17:26,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d20db3-f92a-4571-984a-48ae9230725c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE