./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/bigshot_s.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/bigshot_s.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d8c741fd238f074816319de9a9bd5d97cd9b35eb7f53a276be973ea0c31ecbe --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:23:11,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:23:11,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:23:11,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:23:11,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:23:11,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:23:11,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:23:11,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:23:11,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:23:11,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:23:11,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:23:11,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:23:11,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:23:11,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:23:11,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:23:11,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:23:11,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:23:11,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:23:11,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:23:11,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:23:11,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:23:11,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:23:11,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:23:11,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:23:11,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:23:11,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:23:11,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:23:11,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:23:11,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:23:11,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:23:11,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:23:11,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:23:11,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:23:11,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:23:11,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:23:11,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:23:11,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:23:11,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:23:11,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:23:11,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:23:11,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:23:11,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 12:23:11,730 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:23:11,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:23:11,731 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:23:11,731 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:23:11,732 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:23:11,733 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:23:11,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:23:11,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:23:11,734 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:23:11,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:23:11,736 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:23:11,737 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:23:11,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:23:11,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:23:11,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:23:11,738 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:23:11,738 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:23:11,738 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:23:11,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:23:11,739 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:23:11,739 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:23:11,739 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:23:11,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:23:11,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:23:11,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:23:11,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:23:11,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:23:11,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:23:11,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:23:11,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:23:11,742 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_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d8c741fd238f074816319de9a9bd5d97cd9b35eb7f53a276be973ea0c31ecbe [2022-11-16 12:23:12,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:23:12,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:23:12,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:23:12,177 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:23:12,178 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:23:12,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread/bigshot_s.i [2022-11-16 12:23:12,269 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/data/3cce8226b/ba6ec70a98d24de292f6c775ce699d1c/FLAGcbe2d70ff [2022-11-16 12:23:12,951 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:23:12,952 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/sv-benchmarks/c/pthread/bigshot_s.i [2022-11-16 12:23:12,977 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/data/3cce8226b/ba6ec70a98d24de292f6c775ce699d1c/FLAGcbe2d70ff [2022-11-16 12:23:13,203 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/data/3cce8226b/ba6ec70a98d24de292f6c775ce699d1c [2022-11-16 12:23:13,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:23:13,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:23:13,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:23:13,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:23:13,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:23:13,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:23:13" (1/1) ... [2022-11-16 12:23:13,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@174c5122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:13, skipping insertion in model container [2022-11-16 12:23:13,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:23:13" (1/1) ... [2022-11-16 12:23:13,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:23:13,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:23:14,043 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/sv-benchmarks/c/pthread/bigshot_s.i[55202,55215] [2022-11-16 12:23:14,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:23:14,100 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:23:14,169 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/sv-benchmarks/c/pthread/bigshot_s.i[55202,55215] [2022-11-16 12:23:14,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:23:14,252 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:23:14,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:14 WrapperNode [2022-11-16 12:23:14,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:23:14,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:23:14,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:23:14,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:23:14,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:14" (1/1) ... [2022-11-16 12:23:14,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:14" (1/1) ... [2022-11-16 12:23:14,321 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2022-11-16 12:23:14,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:23:14,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:23:14,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:23:14,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:23:14,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:14" (1/1) ... [2022-11-16 12:23:14,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:14" (1/1) ... [2022-11-16 12:23:14,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:14" (1/1) ... [2022-11-16 12:23:14,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:14" (1/1) ... [2022-11-16 12:23:14,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:14" (1/1) ... [2022-11-16 12:23:14,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:14" (1/1) ... [2022-11-16 12:23:14,355 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:14" (1/1) ... [2022-11-16 12:23:14,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:14" (1/1) ... [2022-11-16 12:23:14,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:23:14,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:23:14,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:23:14,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:23:14,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:14" (1/1) ... [2022-11-16 12:23:14,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:23:14,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:14,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:23:14,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:23:14,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:23:14,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:23:14,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-16 12:23:14,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:23:14,493 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:23:14,494 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:23:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:23:14,494 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:23:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:23:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:23:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:23:14,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:23:14,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:23:14,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:23:14,497 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:23:14,676 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:23:14,679 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:23:15,084 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:23:15,094 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:23:15,095 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:23:15,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:23:15 BoogieIcfgContainer [2022-11-16 12:23:15,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:23:15,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:23:15,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:23:15,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:23:15,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:23:13" (1/3) ... [2022-11-16 12:23:15,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cbf7a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:23:15, skipping insertion in model container [2022-11-16 12:23:15,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:23:14" (2/3) ... [2022-11-16 12:23:15,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cbf7a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:23:15, skipping insertion in model container [2022-11-16 12:23:15,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:23:15" (3/3) ... [2022-11-16 12:23:15,112 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s.i [2022-11-16 12:23:15,149 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:23:15,150 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-16 12:23:15,150 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:23:15,306 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:23:15,362 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 12:23:15,383 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 119 transitions, 254 flow [2022-11-16 12:23:15,386 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 119 transitions, 254 flow [2022-11-16 12:23:15,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 119 transitions, 254 flow [2022-11-16 12:23:15,491 INFO L130 PetriNetUnfolder]: 5/117 cut-off events. [2022-11-16 12:23:15,492 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:23:15,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 117 events. 5/117 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 151 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2022-11-16 12:23:15,499 INFO L119 LiptonReduction]: Number of co-enabled transitions 360 [2022-11-16 12:23:22,827 INFO L134 LiptonReduction]: Checked pairs total: 485 [2022-11-16 12:23:22,829 INFO L136 LiptonReduction]: Total number of compositions: 134 [2022-11-16 12:23:22,845 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 34 transitions, 84 flow [2022-11-16 12:23:22,872 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 57 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 56 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:22,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:23:22,912 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;@5309ad0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:23:22,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-16 12:23:22,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 56 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:22,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-16 12:23:22,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:22,924 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-16 12:23:22,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:22,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:22,935 INFO L85 PathProgramCache]: Analyzing trace with hash 461, now seen corresponding path program 1 times [2022-11-16 12:23:22,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:22,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607445900] [2022-11-16 12:23:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:22,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:23,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:23,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:23,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607445900] [2022-11-16 12:23:23,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607445900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:23,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:23,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-16 12:23:23,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404616882] [2022-11-16 12:23:23,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:23,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:23:23,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:23,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:23:23,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:23:23,167 INFO L87 Difference]: Start difference. First operand has 57 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 56 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:23,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:23,264 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2022-11-16 12:23:23,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:23:23,267 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-16 12:23:23,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:23,277 INFO L225 Difference]: With dead ends: 47 [2022-11-16 12:23:23,277 INFO L226 Difference]: Without dead ends: 47 [2022-11-16 12:23:23,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:23:23,282 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:23,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:23,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-16 12:23:23,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-16 12:23:23,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 3.0) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:23,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 75 transitions. [2022-11-16 12:23:23,327 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 75 transitions. Word has length 1 [2022-11-16 12:23:23,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:23,328 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 75 transitions. [2022-11-16 12:23:23,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:23,328 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 75 transitions. [2022-11-16 12:23:23,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 12:23:23,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:23,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 12:23:23,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:23:23,330 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:23,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:23,331 INFO L85 PathProgramCache]: Analyzing trace with hash 454524, now seen corresponding path program 1 times [2022-11-16 12:23:23,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:23,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168235244] [2022-11-16 12:23:23,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:23,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:23,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:23,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168235244] [2022-11-16 12:23:23,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168235244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:23,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:23,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:23:23,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083220710] [2022-11-16 12:23:23,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:23,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:23:23,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:23,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:23:23,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:23,605 INFO L87 Difference]: Start difference. First operand 47 states and 75 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:23,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:23,660 INFO L93 Difference]: Finished difference Result 45 states and 72 transitions. [2022-11-16 12:23:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:23:23,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 12:23:23,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:23,662 INFO L225 Difference]: With dead ends: 45 [2022-11-16 12:23:23,662 INFO L226 Difference]: Without dead ends: 45 [2022-11-16 12:23:23,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:23,665 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:23,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:23:23,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-16 12:23:23,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-16 12:23:23,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 24 states have (on average 3.0) internal successors, (72), 44 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:23,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 72 transitions. [2022-11-16 12:23:23,674 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 72 transitions. Word has length 3 [2022-11-16 12:23:23,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:23,674 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 72 transitions. [2022-11-16 12:23:23,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:23,675 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 72 transitions. [2022-11-16 12:23:23,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 12:23:23,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:23,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 12:23:23,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:23:23,676 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:23,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:23,677 INFO L85 PathProgramCache]: Analyzing trace with hash 454525, now seen corresponding path program 1 times [2022-11-16 12:23:23,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:23,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103704057] [2022-11-16 12:23:23,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:23,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:23,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:23,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:23,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103704057] [2022-11-16 12:23:23,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103704057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:23,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:23,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:23:23,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94207637] [2022-11-16 12:23:23,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:23,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:23:23,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:23,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:23:23,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:23,781 INFO L87 Difference]: Start difference. First operand 45 states and 72 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:23,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:23,919 INFO L93 Difference]: Finished difference Result 81 states and 133 transitions. [2022-11-16 12:23:23,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:23:23,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 12:23:23,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:23,921 INFO L225 Difference]: With dead ends: 81 [2022-11-16 12:23:23,921 INFO L226 Difference]: Without dead ends: 81 [2022-11-16 12:23:23,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:23,923 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 21 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:23,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 3 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:23,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-16 12:23:23,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 44. [2022-11-16 12:23:23,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 43 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:23,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 70 transitions. [2022-11-16 12:23:23,932 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 70 transitions. Word has length 3 [2022-11-16 12:23:23,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:23,933 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 70 transitions. [2022-11-16 12:23:23,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:23,933 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 70 transitions. [2022-11-16 12:23:23,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 12:23:23,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:23,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 12:23:23,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:23:23,934 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:23,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:23,935 INFO L85 PathProgramCache]: Analyzing trace with hash 14091797, now seen corresponding path program 1 times [2022-11-16 12:23:23,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:23,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703766941] [2022-11-16 12:23:23,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:23,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:24,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:24,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703766941] [2022-11-16 12:23:24,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703766941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:24,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:24,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:23:24,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221544258] [2022-11-16 12:23:24,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:24,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:24,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:24,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:24,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:23:24,082 INFO L87 Difference]: Start difference. First operand 44 states and 70 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) 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) [2022-11-16 12:23:24,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:24,164 INFO L93 Difference]: Finished difference Result 43 states and 69 transitions. [2022-11-16 12:23:24,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:23:24,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) 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 [2022-11-16 12:23:24,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:24,166 INFO L225 Difference]: With dead ends: 43 [2022-11-16 12:23:24,166 INFO L226 Difference]: Without dead ends: 43 [2022-11-16 12:23:24,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:23:24,168 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:24,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:24,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-16 12:23:24,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-16 12:23:24,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 23 states have (on average 3.0) internal successors, (69), 42 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:24,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 69 transitions. [2022-11-16 12:23:24,174 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 69 transitions. Word has length 4 [2022-11-16 12:23:24,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:24,174 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 69 transitions. [2022-11-16 12:23:24,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) 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) [2022-11-16 12:23:24,175 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 69 transitions. [2022-11-16 12:23:24,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 12:23:24,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:24,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 12:23:24,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:23:24,176 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:24,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:24,176 INFO L85 PathProgramCache]: Analyzing trace with hash 656198352, now seen corresponding path program 1 times [2022-11-16 12:23:24,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:24,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120085935] [2022-11-16 12:23:24,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:24,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:24,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:24,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120085935] [2022-11-16 12:23:24,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120085935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:24,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:24,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:23:24,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594097082] [2022-11-16 12:23:24,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:24,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:24,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:24,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:24,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:23:24,494 INFO L87 Difference]: Start difference. First operand 43 states and 69 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:24,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:24,561 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2022-11-16 12:23:24,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:23:24,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-16 12:23:24,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:24,571 INFO L225 Difference]: With dead ends: 35 [2022-11-16 12:23:24,571 INFO L226 Difference]: Without dead ends: 35 [2022-11-16 12:23:24,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:23:24,573 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:24,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:24,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-16 12:23:24,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-16 12:23:24,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:24,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 53 transitions. [2022-11-16 12:23:24,579 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 53 transitions. Word has length 6 [2022-11-16 12:23:24,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:24,579 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 53 transitions. [2022-11-16 12:23:24,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:24,579 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 53 transitions. [2022-11-16 12:23:24,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 12:23:24,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:24,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 12:23:24,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:23:24,581 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:24,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:24,581 INFO L85 PathProgramCache]: Analyzing trace with hash 656198354, now seen corresponding path program 1 times [2022-11-16 12:23:24,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:24,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118498098] [2022-11-16 12:23:24,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:24,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:24,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:24,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:24,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118498098] [2022-11-16 12:23:24,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118498098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:24,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:24,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:23:24,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699179600] [2022-11-16 12:23:24,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:24,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:23:24,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:24,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:23:24,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:24,745 INFO L87 Difference]: Start difference. First operand 35 states and 53 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:24,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:24,812 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2022-11-16 12:23:24,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:23:24,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-11-16 12:23:24,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:24,815 INFO L225 Difference]: With dead ends: 27 [2022-11-16 12:23:24,816 INFO L226 Difference]: Without dead ends: 27 [2022-11-16 12:23:24,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:24,817 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:24,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:24,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-16 12:23:24,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-16 12:23:24,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:24,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2022-11-16 12:23:24,832 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 6 [2022-11-16 12:23:24,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:24,832 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2022-11-16 12:23:24,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:24,832 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2022-11-16 12:23:24,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:23:24,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:24,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:24,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:23:24,834 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:24,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:24,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1885700721, now seen corresponding path program 1 times [2022-11-16 12:23:24,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:24,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558368891] [2022-11-16 12:23:24,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:24,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:25,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:25,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:25,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558368891] [2022-11-16 12:23:25,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558368891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:25,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:25,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:23:25,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721749233] [2022-11-16 12:23:25,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:25,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:23:25,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:25,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:23:25,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:23:25,163 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:25,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:25,284 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2022-11-16 12:23:25,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:23:25,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 12:23:25,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:25,286 INFO L225 Difference]: With dead ends: 31 [2022-11-16 12:23:25,287 INFO L226 Difference]: Without dead ends: 31 [2022-11-16 12:23:25,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:23:25,288 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:25,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:25,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-16 12:23:25,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2022-11-16 12:23:25,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:25,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2022-11-16 12:23:25,293 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 9 [2022-11-16 12:23:25,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:25,294 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-11-16 12:23:25,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:25,295 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2022-11-16 12:23:25,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:23:25,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:25,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:25,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:23:25,296 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:25,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:25,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1885700605, now seen corresponding path program 1 times [2022-11-16 12:23:25,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:25,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228865478] [2022-11-16 12:23:25,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:25,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:25,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:25,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:25,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228865478] [2022-11-16 12:23:25,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228865478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:25,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:25,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:23:25,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765607071] [2022-11-16 12:23:25,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:25,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:25,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:25,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:25,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:23:25,459 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:25,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:25,552 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2022-11-16 12:23:25,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:23:25,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 12:23:25,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:25,554 INFO L225 Difference]: With dead ends: 36 [2022-11-16 12:23:25,554 INFO L226 Difference]: Without dead ends: 36 [2022-11-16 12:23:25,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:23:25,555 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 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 [2022-11-16 12:23:25,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:25,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-16 12:23:25,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2022-11-16 12:23:25,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 2.1) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:25,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 42 transitions. [2022-11-16 12:23:25,561 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 42 transitions. Word has length 9 [2022-11-16 12:23:25,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:25,561 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 42 transitions. [2022-11-16 12:23:25,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:25,562 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 42 transitions. [2022-11-16 12:23:25,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:23:25,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:25,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:25,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:23:25,564 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:25,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:25,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1885700604, now seen corresponding path program 1 times [2022-11-16 12:23:25,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:25,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278524962] [2022-11-16 12:23:25,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:25,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:25,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:25,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:25,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278524962] [2022-11-16 12:23:25,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278524962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:25,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:25,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:23:25,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926192389] [2022-11-16 12:23:25,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:25,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:25,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:25,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:25,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:23:25,638 INFO L87 Difference]: Start difference. First operand 26 states and 42 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:25,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:25,708 INFO L93 Difference]: Finished difference Result 27 states and 40 transitions. [2022-11-16 12:23:25,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:23:25,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 12:23:25,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:25,710 INFO L225 Difference]: With dead ends: 27 [2022-11-16 12:23:25,710 INFO L226 Difference]: Without dead ends: 27 [2022-11-16 12:23:25,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:23:25,711 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:25,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:25,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-16 12:23:25,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-11-16 12:23:25,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.894736842105263) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:25,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 36 transitions. [2022-11-16 12:23:25,715 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 36 transitions. Word has length 9 [2022-11-16 12:23:25,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:25,715 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 36 transitions. [2022-11-16 12:23:25,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:25,715 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 36 transitions. [2022-11-16 12:23:25,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:23:25,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:25,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:25,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:23:25,717 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:25,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:25,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1885700678, now seen corresponding path program 1 times [2022-11-16 12:23:25,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:25,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545793932] [2022-11-16 12:23:25,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:25,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:26,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:26,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:26,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545793932] [2022-11-16 12:23:26,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545793932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:26,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:26,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:23:26,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685371647] [2022-11-16 12:23:26,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:26,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:23:26,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:26,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:23:26,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:23:26,105 INFO L87 Difference]: Start difference. First operand 23 states and 36 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:26,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:26,390 INFO L93 Difference]: Finished difference Result 28 states and 38 transitions. [2022-11-16 12:23:26,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:23:26,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 12:23:26,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:26,391 INFO L225 Difference]: With dead ends: 28 [2022-11-16 12:23:26,391 INFO L226 Difference]: Without dead ends: 28 [2022-11-16 12:23:26,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:26,392 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 52 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:26,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 0 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:26,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-16 12:23:26,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2022-11-16 12:23:26,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:26,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2022-11-16 12:23:26,396 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 34 transitions. Word has length 9 [2022-11-16 12:23:26,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:26,396 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 34 transitions. [2022-11-16 12:23:26,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:26,396 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 34 transitions. [2022-11-16 12:23:26,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:23:26,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:26,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:26,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:23:26,397 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:26,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:26,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1672824740, now seen corresponding path program 1 times [2022-11-16 12:23:26,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:26,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299709645] [2022-11-16 12:23:26,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:26,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:26,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:26,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:26,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299709645] [2022-11-16 12:23:26,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299709645] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:26,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514809984] [2022-11-16 12:23:26,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:26,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:26,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:26,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:26,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:23:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:26,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:23:26,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:26,821 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 [2022-11-16 12:23:26,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:26,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:27,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:27,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514809984] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:27,018 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:27,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-11-16 12:23:27,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767930962] [2022-11-16 12:23:27,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:27,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:23:27,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:27,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:23:27,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:23:27,020 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:27,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:27,253 INFO L93 Difference]: Finished difference Result 55 states and 74 transitions. [2022-11-16 12:23:27,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:23:27,254 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 12:23:27,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:27,255 INFO L225 Difference]: With dead ends: 55 [2022-11-16 12:23:27,255 INFO L226 Difference]: Without dead ends: 55 [2022-11-16 12:23:27,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:23:27,256 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 79 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:27,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 0 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:27,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-16 12:23:27,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 29. [2022-11-16 12:23:27,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 2.2) internal successors, (55), 28 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:27,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 55 transitions. [2022-11-16 12:23:27,261 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 55 transitions. Word has length 10 [2022-11-16 12:23:27,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:27,261 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 55 transitions. [2022-11-16 12:23:27,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:27,262 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 55 transitions. [2022-11-16 12:23:27,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:23:27,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:27,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:27,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 12:23:27,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 12:23:27,469 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:27,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:27,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1672824667, now seen corresponding path program 1 times [2022-11-16 12:23:27,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:27,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115979457] [2022-11-16 12:23:27,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:27,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:28,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:28,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:28,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115979457] [2022-11-16 12:23:28,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115979457] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:28,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213342728] [2022-11-16 12:23:28,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:28,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:28,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:28,031 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:28,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:23:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:28,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 12:23:28,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:28,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:28,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:28,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:28,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-16 12:23:28,308 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-16 12:23:28,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-16 12:23:28,453 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:23:28,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-16 12:23:28,489 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-16 12:23:28,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:23:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:28,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:28,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:28,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213342728] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:28,806 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:28,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 14 [2022-11-16 12:23:28,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246062628] [2022-11-16 12:23:28,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:28,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:23:28,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:28,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:23:28,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:23:28,809 INFO L87 Difference]: Start difference. First operand 29 states and 55 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:29,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:29,689 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2022-11-16 12:23:29,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:23:29,690 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 12:23:29,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:29,690 INFO L225 Difference]: With dead ends: 49 [2022-11-16 12:23:29,691 INFO L226 Difference]: Without dead ends: 49 [2022-11-16 12:23:29,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:23:29,692 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 144 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:29,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 0 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 107 Invalid, 0 Unknown, 27 Unchecked, 0.2s Time] [2022-11-16 12:23:29,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-16 12:23:29,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 29. [2022-11-16 12:23:29,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.96) internal successors, (49), 28 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:29,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 49 transitions. [2022-11-16 12:23:29,696 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 49 transitions. Word has length 10 [2022-11-16 12:23:29,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:29,696 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 49 transitions. [2022-11-16 12:23:29,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:29,697 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 49 transitions. [2022-11-16 12:23:29,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:23:29,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:29,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:29,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:29,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:29,898 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:29,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:29,899 INFO L85 PathProgramCache]: Analyzing trace with hash 317440932, now seen corresponding path program 1 times [2022-11-16 12:23:29,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:29,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648062129] [2022-11-16 12:23:29,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:29,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:29,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:29,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:29,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648062129] [2022-11-16 12:23:29,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648062129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:29,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:29,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:23:29,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101685731] [2022-11-16 12:23:29,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:29,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:23:29,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:29,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:23:29,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:29,955 INFO L87 Difference]: Start difference. First operand 29 states and 49 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:29,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:29,996 INFO L93 Difference]: Finished difference Result 29 states and 47 transitions. [2022-11-16 12:23:29,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:23:29,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 12:23:29,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:29,999 INFO L225 Difference]: With dead ends: 29 [2022-11-16 12:23:29,999 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 12:23:30,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:23:30,001 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:30,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:23:30,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 12:23:30,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-16 12:23:30,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.88) internal successors, (47), 28 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) [2022-11-16 12:23:30,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 47 transitions. [2022-11-16 12:23:30,010 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 47 transitions. Word has length 11 [2022-11-16 12:23:30,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:30,010 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 47 transitions. [2022-11-16 12:23:30,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:30,011 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 47 transitions. [2022-11-16 12:23:30,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 12:23:30,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:30,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:30,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:23:30,013 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:30,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:30,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1267164009, now seen corresponding path program 1 times [2022-11-16 12:23:30,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:30,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025257025] [2022-11-16 12:23:30,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:30,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:30,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:30,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:30,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025257025] [2022-11-16 12:23:30,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025257025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:30,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:30,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:23:30,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015429425] [2022-11-16 12:23:30,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:30,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:23:30,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:30,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:23:30,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:23:30,542 INFO L87 Difference]: Start difference. First operand 29 states and 47 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:30,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:30,682 INFO L93 Difference]: Finished difference Result 29 states and 45 transitions. [2022-11-16 12:23:30,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:23:30,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-16 12:23:30,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:30,683 INFO L225 Difference]: With dead ends: 29 [2022-11-16 12:23:30,683 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 12:23:30,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:23:30,684 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:30,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:23:30,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 12:23:30,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-16 12:23:30,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.8) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:30,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 45 transitions. [2022-11-16 12:23:30,687 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 45 transitions. Word has length 12 [2022-11-16 12:23:30,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:30,687 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 45 transitions. [2022-11-16 12:23:30,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:30,687 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 45 transitions. [2022-11-16 12:23:30,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:23:30,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:30,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:30,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:23:30,688 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:30,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:30,688 INFO L85 PathProgramCache]: Analyzing trace with hash 617949736, now seen corresponding path program 1 times [2022-11-16 12:23:30,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:30,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365542973] [2022-11-16 12:23:30,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:30,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:31,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:31,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:31,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365542973] [2022-11-16 12:23:31,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365542973] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:31,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003209983] [2022-11-16 12:23:31,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:31,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:31,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:31,083 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:31,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:23:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:31,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-16 12:23:31,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:31,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:31,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:31,246 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-16 12:23:31,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:23:31,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:31,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:23:31,383 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 12:23:31,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-11-16 12:23:31,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:31,461 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 12:23:31,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 12:23:31,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:31,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:31,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:31,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003209983] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:31,773 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:31,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 16 [2022-11-16 12:23:31,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743554206] [2022-11-16 12:23:31,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:31,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:23:31,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:31,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:23:31,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:23:31,775 INFO L87 Difference]: Start difference. First operand 29 states and 45 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:32,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:32,132 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2022-11-16 12:23:32,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:23:32,133 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 12:23:32,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:32,133 INFO L225 Difference]: With dead ends: 28 [2022-11-16 12:23:32,134 INFO L226 Difference]: Without dead ends: 28 [2022-11-16 12:23:32,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:23:32,135 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 75 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:32,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 0 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 81 Invalid, 0 Unknown, 26 Unchecked, 0.1s Time] [2022-11-16 12:23:32,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-16 12:23:32,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-16 12:23:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.68) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:32,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2022-11-16 12:23:32,138 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 13 [2022-11-16 12:23:32,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:32,138 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2022-11-16 12:23:32,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:32,138 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2022-11-16 12:23:32,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:23:32,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:32,139 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:32,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:32,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:23:32,340 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:32,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:32,340 INFO L85 PathProgramCache]: Analyzing trace with hash 617635395, now seen corresponding path program 2 times [2022-11-16 12:23:32,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:32,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069276829] [2022-11-16 12:23:32,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:32,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:32,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:32,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069276829] [2022-11-16 12:23:32,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069276829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:32,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515966077] [2022-11-16 12:23:32,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:23:32,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:32,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:32,573 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:32,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:23:32,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:23:32,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:23:32,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 12:23:32,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:32,763 INFO L321 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2022-11-16 12:23:32,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 34 [2022-11-16 12:23:32,795 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 12:23:32,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-16 12:23:32,951 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-16 12:23:32,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 43 [2022-11-16 12:23:32,977 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:23:32,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 28 [2022-11-16 12:23:33,285 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:23:33,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:33,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515966077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:33,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:33,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 10 [2022-11-16 12:23:33,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691524415] [2022-11-16 12:23:33,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:33,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:23:33,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:33,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:23:33,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:23:33,289 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:33,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:33,299 INFO L93 Difference]: Finished difference Result 37 states and 61 transitions. [2022-11-16 12:23:33,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:23:33,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 12:23:33,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:33,300 INFO L225 Difference]: With dead ends: 37 [2022-11-16 12:23:33,301 INFO L226 Difference]: Without dead ends: 37 [2022-11-16 12:23:33,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:23:33,302 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:33,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2022-11-16 12:23:33,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-16 12:23:33,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-16 12:23:33,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 36 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:33,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 61 transitions. [2022-11-16 12:23:33,313 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 61 transitions. Word has length 13 [2022-11-16 12:23:33,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:33,313 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 61 transitions. [2022-11-16 12:23:33,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:33,314 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 61 transitions. [2022-11-16 12:23:33,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:23:33,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:33,315 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:33,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:33,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:23:33,520 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:33,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:33,521 INFO L85 PathProgramCache]: Analyzing trace with hash 617635322, now seen corresponding path program 2 times [2022-11-16 12:23:33,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:33,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49027282] [2022-11-16 12:23:33,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:33,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:33,965 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:33,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:33,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49027282] [2022-11-16 12:23:33,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49027282] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:33,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227072390] [2022-11-16 12:23:33,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:23:33,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:33,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:33,977 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:33,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:23:34,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:23:34,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:23:34,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-16 12:23:34,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:34,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:34,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:34,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:34,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-16 12:23:34,162 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-16 12:23:34,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-16 12:23:34,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:34,248 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:23:34,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2022-11-16 12:23:34,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:23:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:34,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:34,741 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:34,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227072390] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:34,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:34,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 23 [2022-11-16 12:23:34,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057190521] [2022-11-16 12:23:34,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:34,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 12:23:34,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:34,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 12:23:34,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:23:34,746 INFO L87 Difference]: Start difference. First operand 37 states and 61 transitions. Second operand has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:35,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:35,767 INFO L93 Difference]: Finished difference Result 75 states and 119 transitions. [2022-11-16 12:23:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:23:35,767 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 12:23:35,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:35,768 INFO L225 Difference]: With dead ends: 75 [2022-11-16 12:23:35,768 INFO L226 Difference]: Without dead ends: 75 [2022-11-16 12:23:35,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=365, Invalid=1441, Unknown=0, NotChecked=0, Total=1806 [2022-11-16 12:23:35,769 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 209 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:35,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 0 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 270 Invalid, 0 Unknown, 63 Unchecked, 0.2s Time] [2022-11-16 12:23:35,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-16 12:23:35,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 49. [2022-11-16 12:23:35,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 46 states have (on average 2.1956521739130435) internal successors, (101), 48 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:35,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 101 transitions. [2022-11-16 12:23:35,773 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 101 transitions. Word has length 13 [2022-11-16 12:23:35,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:35,773 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 101 transitions. [2022-11-16 12:23:35,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:35,774 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 101 transitions. [2022-11-16 12:23:35,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:23:35,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:35,774 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:35,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:35,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:23:35,975 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:35,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:35,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1669898767, now seen corresponding path program 3 times [2022-11-16 12:23:35,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:35,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497217275] [2022-11-16 12:23:35,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:35,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:36,219 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:36,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:36,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497217275] [2022-11-16 12:23:36,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497217275] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:36,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759093401] [2022-11-16 12:23:36,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:23:36,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:36,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:36,223 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:36,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:23:36,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-16 12:23:36,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:23:36,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-16 12:23:36,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:36,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:36,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:36,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:36,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-16 12:23:36,420 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-16 12:23:36,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-16 12:23:36,477 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:23:36,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-16 12:23:36,504 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-16 12:23:36,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:23:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:23:36,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:36,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759093401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:36,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:36,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 10 [2022-11-16 12:23:36,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293899731] [2022-11-16 12:23:36,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:36,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:23:36,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:36,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:23:36,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:23:36,660 INFO L87 Difference]: Start difference. First operand 49 states and 101 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:36,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:36,742 INFO L93 Difference]: Finished difference Result 64 states and 117 transitions. [2022-11-16 12:23:36,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:23:36,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 12:23:36,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:36,743 INFO L225 Difference]: With dead ends: 64 [2022-11-16 12:23:36,743 INFO L226 Difference]: Without dead ends: 64 [2022-11-16 12:23:36,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:23:36,744 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:36,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 20 Unchecked, 0.1s Time] [2022-11-16 12:23:36,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-16 12:23:36,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2022-11-16 12:23:36,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 55 states have (on average 2.0545454545454547) internal successors, (113), 57 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 113 transitions. [2022-11-16 12:23:36,747 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 113 transitions. Word has length 13 [2022-11-16 12:23:36,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:36,747 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 113 transitions. [2022-11-16 12:23:36,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:36,748 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 113 transitions. [2022-11-16 12:23:36,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:23:36,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:36,748 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:36,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:36,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:23:36,949 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:36,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:36,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1967143760, now seen corresponding path program 1 times [2022-11-16 12:23:36,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:36,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755819915] [2022-11-16 12:23:36,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:36,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:37,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:37,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:37,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755819915] [2022-11-16 12:23:37,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755819915] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:37,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729751390] [2022-11-16 12:23:37,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:37,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:37,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:37,340 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:37,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:23:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:37,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 12:23:37,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:37,519 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-16 12:23:37,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-16 12:23:37,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:37,615 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-16 12:23:37,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:23:37,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:37,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:37,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:37,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:37,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:37,838 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_382 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_382) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2022-11-16 12:23:37,847 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_382 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_382) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-16 12:23:38,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-16 12:23:38,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729751390] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:38,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:38,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2022-11-16 12:23:38,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606634996] [2022-11-16 12:23:38,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:38,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:23:38,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:38,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:23:38,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=230, Unknown=2, NotChecked=62, Total=342 [2022-11-16 12:23:38,008 INFO L87 Difference]: Start difference. First operand 58 states and 113 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:38,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:38,398 INFO L93 Difference]: Finished difference Result 64 states and 119 transitions. [2022-11-16 12:23:38,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:23:38,399 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:23:38,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:38,400 INFO L225 Difference]: With dead ends: 64 [2022-11-16 12:23:38,400 INFO L226 Difference]: Without dead ends: 64 [2022-11-16 12:23:38,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=379, Unknown=2, NotChecked=82, Total=552 [2022-11-16 12:23:38,401 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:38,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 66 Unchecked, 0.1s Time] [2022-11-16 12:23:38,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-16 12:23:38,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2022-11-16 12:23:38,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 59 states have (on average 1.9491525423728813) internal successors, (115), 61 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:38,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 115 transitions. [2022-11-16 12:23:38,404 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 115 transitions. Word has length 14 [2022-11-16 12:23:38,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:38,405 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 115 transitions. [2022-11-16 12:23:38,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:38,405 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 115 transitions. [2022-11-16 12:23:38,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:23:38,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:38,406 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:38,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:38,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:38,612 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:38,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:38,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1966828141, now seen corresponding path program 1 times [2022-11-16 12:23:38,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:38,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059965544] [2022-11-16 12:23:38,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:38,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:38,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:38,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059965544] [2022-11-16 12:23:38,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059965544] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:38,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942395774] [2022-11-16 12:23:38,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:38,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:38,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:38,936 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:38,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:23:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:39,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 12:23:39,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:39,075 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 [2022-11-16 12:23:39,220 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:39,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:39,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942395774] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:39,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:39,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2022-11-16 12:23:39,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481379750] [2022-11-16 12:23:39,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:39,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:23:39,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:39,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:23:39,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:23:39,417 INFO L87 Difference]: Start difference. First operand 62 states and 115 transitions. Second operand has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:39,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:39,815 INFO L93 Difference]: Finished difference Result 81 states and 125 transitions. [2022-11-16 12:23:39,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:23:39,816 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:23:39,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:39,816 INFO L225 Difference]: With dead ends: 81 [2022-11-16 12:23:39,816 INFO L226 Difference]: Without dead ends: 81 [2022-11-16 12:23:39,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=191, Invalid=565, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:23:39,817 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 88 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:39,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 0 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:23:39,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-16 12:23:39,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 62. [2022-11-16 12:23:39,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 59 states have (on average 1.88135593220339) internal successors, (111), 61 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:39,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 111 transitions. [2022-11-16 12:23:39,821 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 111 transitions. Word has length 14 [2022-11-16 12:23:39,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:39,821 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 111 transitions. [2022-11-16 12:23:39,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:39,821 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 111 transitions. [2022-11-16 12:23:39,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:23:39,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:39,822 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:39,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:40,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:40,027 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:40,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:40,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1928972840, now seen corresponding path program 2 times [2022-11-16 12:23:40,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:40,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564554209] [2022-11-16 12:23:40,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:40,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:40,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:40,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:40,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564554209] [2022-11-16 12:23:40,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564554209] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:40,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224187145] [2022-11-16 12:23:40,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:23:40,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:40,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:40,485 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:40,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:23:40,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:23:40,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:23:40,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 12:23:40,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:40,691 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-16 12:23:40,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-16 12:23:40,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:40,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:40,810 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:23:40,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2022-11-16 12:23:40,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:40,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:40,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:41,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:41,046 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_466 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_466) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2022-11-16 12:23:41,056 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_466 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_466) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-16 12:23:41,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-16 12:23:41,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224187145] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:41,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:41,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2022-11-16 12:23:41,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875417603] [2022-11-16 12:23:41,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:41,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:23:41,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:41,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:23:41,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=231, Unknown=2, NotChecked=62, Total=342 [2022-11-16 12:23:41,213 INFO L87 Difference]: Start difference. First operand 62 states and 111 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:41,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:41,644 INFO L93 Difference]: Finished difference Result 68 states and 115 transitions. [2022-11-16 12:23:41,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:23:41,645 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:23:41,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:41,645 INFO L225 Difference]: With dead ends: 68 [2022-11-16 12:23:41,645 INFO L226 Difference]: Without dead ends: 68 [2022-11-16 12:23:41,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=424, Unknown=2, NotChecked=86, Total=600 [2022-11-16 12:23:41,647 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:41,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 61 Unchecked, 0.1s Time] [2022-11-16 12:23:41,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-16 12:23:41,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2022-11-16 12:23:41,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 55 states have (on average 1.9090909090909092) internal successors, (105), 57 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:41,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 105 transitions. [2022-11-16 12:23:41,650 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 105 transitions. Word has length 14 [2022-11-16 12:23:41,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:41,651 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 105 transitions. [2022-11-16 12:23:41,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:41,651 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 105 transitions. [2022-11-16 12:23:41,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 12:23:41,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:41,652 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:41,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:41,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:41,858 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:41,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:41,858 INFO L85 PathProgramCache]: Analyzing trace with hash 842485327, now seen corresponding path program 3 times [2022-11-16 12:23:41,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:41,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787805220] [2022-11-16 12:23:41,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:41,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:42,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:42,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:42,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787805220] [2022-11-16 12:23:42,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787805220] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:42,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800980238] [2022-11-16 12:23:42,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:23:42,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:42,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:42,465 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:42,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:23:42,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 12:23:42,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:23:42,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-16 12:23:42,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:42,680 INFO L321 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2022-11-16 12:23:42,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 53 [2022-11-16 12:23:42,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:42,765 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 12:23:42,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 12:23:42,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:42,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:42,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:43,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:43,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:43,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:43,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:43,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:43,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:43,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-16 12:23:43,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-11-16 12:23:43,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:43,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800980238] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:43,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:43,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2022-11-16 12:23:43,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429106086] [2022-11-16 12:23:43,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:43,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:23:43,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:43,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:23:43,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=428, Unknown=1, NotChecked=0, Total=506 [2022-11-16 12:23:43,622 INFO L87 Difference]: Start difference. First operand 58 states and 105 transitions. Second operand has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:44,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:44,230 INFO L93 Difference]: Finished difference Result 58 states and 101 transitions. [2022-11-16 12:23:44,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:23:44,230 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 12:23:44,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:44,231 INFO L225 Difference]: With dead ends: 58 [2022-11-16 12:23:44,231 INFO L226 Difference]: Without dead ends: 58 [2022-11-16 12:23:44,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=156, Invalid=655, Unknown=1, NotChecked=0, Total=812 [2022-11-16 12:23:44,232 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:44,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 194 Invalid, 0 Unknown, 93 Unchecked, 0.2s Time] [2022-11-16 12:23:44,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-16 12:23:44,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-16 12:23:44,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 55 states have (on average 1.8363636363636364) internal successors, (101), 57 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:44,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 101 transitions. [2022-11-16 12:23:44,235 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 101 transitions. Word has length 15 [2022-11-16 12:23:44,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:44,236 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 101 transitions. [2022-11-16 12:23:44,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:44,236 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 101 transitions. [2022-11-16 12:23:44,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:23:44,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:44,237 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:44,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:44,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-16 12:23:44,443 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:44,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:44,443 INFO L85 PathProgramCache]: Analyzing trace with hash 337812272, now seen corresponding path program 4 times [2022-11-16 12:23:44,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:44,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614486078] [2022-11-16 12:23:44,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:44,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:45,627 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:45,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:45,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614486078] [2022-11-16 12:23:45,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614486078] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:45,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898211339] [2022-11-16 12:23:45,628 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:23:45,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:45,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:45,629 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:45,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:23:45,794 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:23:45,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:23:45,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-16 12:23:45,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:45,828 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:23:45,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 12:23:45,874 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-16 12:23:45,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-16 12:23:46,021 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-16 12:23:46,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:23:46,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:46,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:46,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:46,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:46,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:46,389 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:46,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:46,425 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_572 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_572) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2022-11-16 12:23:46,541 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_572 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_572) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2022-11-16 12:23:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-16 12:23:46,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898211339] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:46,802 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:46,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 27 [2022-11-16 12:23:46,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966588337] [2022-11-16 12:23:46,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:46,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 12:23:46,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:46,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 12:23:46,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=580, Unknown=11, NotChecked=98, Total=756 [2022-11-16 12:23:46,805 INFO L87 Difference]: Start difference. First operand 58 states and 101 transitions. Second operand has 28 states, 28 states have (on average 1.5) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:48,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:48,966 INFO L93 Difference]: Finished difference Result 67 states and 108 transitions. [2022-11-16 12:23:48,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:23:48,967 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.5) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 12:23:48,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:48,969 INFO L225 Difference]: With dead ends: 67 [2022-11-16 12:23:48,969 INFO L226 Difference]: Without dead ends: 67 [2022-11-16 12:23:48,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=252, Invalid=1635, Unknown=13, NotChecked=170, Total=2070 [2022-11-16 12:23:48,971 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 66 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 239 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:48,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 0 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 267 Invalid, 0 Unknown, 239 Unchecked, 0.3s Time] [2022-11-16 12:23:48,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-16 12:23:48,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2022-11-16 12:23:48,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 61 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:48,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 103 transitions. [2022-11-16 12:23:48,976 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 103 transitions. Word has length 16 [2022-11-16 12:23:48,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:48,976 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 103 transitions. [2022-11-16 12:23:48,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.5) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:48,977 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 103 transitions. [2022-11-16 12:23:48,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:23:48,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:48,977 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:48,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:49,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:49,184 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:49,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:49,184 INFO L85 PathProgramCache]: Analyzing trace with hash 299641352, now seen corresponding path program 5 times [2022-11-16 12:23:49,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:49,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743326889] [2022-11-16 12:23:49,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:49,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:50,162 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:50,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:50,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743326889] [2022-11-16 12:23:50,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743326889] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:50,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835091787] [2022-11-16 12:23:50,163 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:23:50,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:50,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:50,164 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:50,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:23:50,307 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-16 12:23:50,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:23:50,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-16 12:23:50,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:50,372 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-16 12:23:50,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-16 12:23:50,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:50,461 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-16 12:23:50,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:23:50,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:50,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:50,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:50,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:50,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:50,782 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:50,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:50,813 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_627 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_627) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2022-11-16 12:23:50,929 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_627 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_627) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2022-11-16 12:23:51,111 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-16 12:23:51,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835091787] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:51,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:51,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-11-16 12:23:51,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415533468] [2022-11-16 12:23:51,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:51,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:23:51,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:51,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:23:51,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=488, Unknown=14, NotChecked=90, Total=650 [2022-11-16 12:23:51,116 INFO L87 Difference]: Start difference. First operand 62 states and 103 transitions. Second operand has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:52,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:52,062 INFO L93 Difference]: Finished difference Result 64 states and 103 transitions. [2022-11-16 12:23:52,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:23:52,063 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 12:23:52,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:52,063 INFO L225 Difference]: With dead ends: 64 [2022-11-16 12:23:52,064 INFO L226 Difference]: Without dead ends: 64 [2022-11-16 12:23:52,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=138, Invalid=978, Unknown=14, NotChecked=130, Total=1260 [2022-11-16 12:23:52,065 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:52,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 240 Invalid, 0 Unknown, 124 Unchecked, 0.2s Time] [2022-11-16 12:23:52,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-16 12:23:52,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2022-11-16 12:23:52,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 57 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:52,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 97 transitions. [2022-11-16 12:23:52,069 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 97 transitions. Word has length 16 [2022-11-16 12:23:52,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:52,069 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 97 transitions. [2022-11-16 12:23:52,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:52,069 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 97 transitions. [2022-11-16 12:23:52,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:23:52,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:52,070 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:52,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:52,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 12:23:52,276 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:52,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:52,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1872816751, now seen corresponding path program 6 times [2022-11-16 12:23:52,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:52,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519791109] [2022-11-16 12:23:52,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:52,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:53,022 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:53,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:53,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519791109] [2022-11-16 12:23:53,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519791109] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:53,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677354913] [2022-11-16 12:23:53,022 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 12:23:53,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:53,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:53,025 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:53,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:23:53,227 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-16 12:23:53,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:23:53,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-16 12:23:53,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:53,299 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-16 12:23:53,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-16 12:23:53,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:53,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:53,426 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:23:53,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2022-11-16 12:23:53,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:53,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:53,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:53,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:53,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:53,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:53,787 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:53,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:53,930 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_687 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_687) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-16 12:23:53,990 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_687 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_687) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 5 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-16 12:23:54,185 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-11-16 12:23:54,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677354913] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:54,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:54,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 27 [2022-11-16 12:23:54,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779995326] [2022-11-16 12:23:54,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:54,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 12:23:54,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:54,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 12:23:54,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=575, Unknown=13, NotChecked=98, Total=756 [2022-11-16 12:23:54,189 INFO L87 Difference]: Start difference. First operand 58 states and 97 transitions. Second operand has 28 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 27 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:54,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:54,957 INFO L93 Difference]: Finished difference Result 66 states and 103 transitions. [2022-11-16 12:23:54,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:23:54,958 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 27 states have internal predecessors, (45), 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 17 [2022-11-16 12:23:54,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:54,959 INFO L225 Difference]: With dead ends: 66 [2022-11-16 12:23:54,959 INFO L226 Difference]: Without dead ends: 66 [2022-11-16 12:23:54,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=140, Invalid=1045, Unknown=13, NotChecked=134, Total=1332 [2022-11-16 12:23:54,960 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:54,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 265 Invalid, 0 Unknown, 155 Unchecked, 0.2s Time] [2022-11-16 12:23:54,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-16 12:23:54,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-11-16 12:23:54,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 63 states have (on average 1.6349206349206349) internal successors, (103), 65 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:54,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 103 transitions. [2022-11-16 12:23:54,965 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 103 transitions. Word has length 17 [2022-11-16 12:23:54,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:54,965 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 103 transitions. [2022-11-16 12:23:54,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 27 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:54,965 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 103 transitions. [2022-11-16 12:23:54,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:23:54,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:54,966 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:54,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:55,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-16 12:23:55,175 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:55,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:55,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1872502330, now seen corresponding path program 3 times [2022-11-16 12:23:55,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:55,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695561450] [2022-11-16 12:23:55,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:55,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:56,036 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:56,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:56,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695561450] [2022-11-16 12:23:56,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695561450] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:56,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259046778] [2022-11-16 12:23:56,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:23:56,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:56,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:56,038 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:56,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:23:56,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 12:23:56,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:23:56,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-16 12:23:56,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:56,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:56,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:56,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:56,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-16 12:23:56,314 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-16 12:23:56,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-16 12:23:56,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:56,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:56,459 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:23:56,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2022-11-16 12:23:56,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:23:56,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:56,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:56,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:56,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:56,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:56,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:56,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:56,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:23:57,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:23:57,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-16 12:23:57,058 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:57,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:58,013 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:58,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259046778] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:58,013 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:58,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 36 [2022-11-16 12:23:58,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892182140] [2022-11-16 12:23:58,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:58,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-16 12:23:58,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:58,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-16 12:23:58,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1193, Unknown=5, NotChecked=0, Total=1332 [2022-11-16 12:23:58,018 INFO L87 Difference]: Start difference. First operand 66 states and 103 transitions. Second operand has 37 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 36 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:59,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:59,724 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2022-11-16 12:23:59,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:23:59,724 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 36 states have internal predecessors, (50), 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 17 [2022-11-16 12:23:59,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:59,725 INFO L225 Difference]: With dead ends: 66 [2022-11-16 12:23:59,725 INFO L226 Difference]: Without dead ends: 66 [2022-11-16 12:23:59,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 13 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=332, Invalid=2213, Unknown=5, NotChecked=0, Total=2550 [2022-11-16 12:23:59,728 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 113 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 200 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:59,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 0 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 365 Invalid, 0 Unknown, 200 Unchecked, 0.3s Time] [2022-11-16 12:23:59,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-16 12:23:59,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 34. [2022-11-16 12:23:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.393939393939394) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:59,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2022-11-16 12:23:59,732 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 46 transitions. Word has length 17 [2022-11-16 12:23:59,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:59,732 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 46 transitions. [2022-11-16 12:23:59,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 36 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:59,732 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2022-11-16 12:23:59,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:23:59,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:59,733 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:59,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-16 12:23:59,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:59,939 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:23:59,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:59,939 INFO L85 PathProgramCache]: Analyzing trace with hash -155402361, now seen corresponding path program 7 times [2022-11-16 12:23:59,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:59,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380070225] [2022-11-16 12:23:59,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:59,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:00,941 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:00,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:00,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380070225] [2022-11-16 12:24:00,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380070225] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:24:00,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879314017] [2022-11-16 12:24:00,941 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 12:24:00,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:00,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:24:00,943 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:24:00,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 12:24:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:01,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-16 12:24:01,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:01,176 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-16 12:24:01,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-16 12:24:01,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:01,279 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-16 12:24:01,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:24:01,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:01,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:01,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:01,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:01,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:01,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:01,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:24:01,677 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_817 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_817) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2022-11-16 12:24:01,683 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_817 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_817) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-16 12:24:01,741 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_817 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_817) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2022-11-16 12:24:01,748 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_817 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_817) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 5 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-16 12:24:01,939 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 14 not checked. [2022-11-16 12:24:01,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879314017] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:24:01,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:24:01,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 27 [2022-11-16 12:24:01,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394468507] [2022-11-16 12:24:01,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:24:01,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 12:24:01,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:01,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 12:24:01,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=499, Unknown=8, NotChecked=188, Total=756 [2022-11-16 12:24:01,942 INFO L87 Difference]: Start difference. First operand 34 states and 46 transitions. Second operand has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 27 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) [2022-11-16 12:24:02,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:02,826 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2022-11-16 12:24:02,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:24:02,827 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 27 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 17 [2022-11-16 12:24:02,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:02,827 INFO L225 Difference]: With dead ends: 39 [2022-11-16 12:24:02,827 INFO L226 Difference]: Without dead ends: 39 [2022-11-16 12:24:02,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=123, Invalid=941, Unknown=8, NotChecked=260, Total=1332 [2022-11-16 12:24:02,828 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:02,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 253 Invalid, 0 Unknown, 120 Unchecked, 0.2s Time] [2022-11-16 12:24:02,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-16 12:24:02,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2022-11-16 12:24:02,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:02,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2022-11-16 12:24:02,830 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 17 [2022-11-16 12:24:02,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:02,831 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2022-11-16 12:24:02,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 27 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) [2022-11-16 12:24:02,831 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2022-11-16 12:24:02,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 12:24:02,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:02,831 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:02,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:03,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:03,032 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:03,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:03,032 INFO L85 PathProgramCache]: Analyzing trace with hash -2081651952, now seen corresponding path program 8 times [2022-11-16 12:24:03,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:03,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808196191] [2022-11-16 12:24:03,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:03,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:04,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:04,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808196191] [2022-11-16 12:24:04,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808196191] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:24:04,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620886774] [2022-11-16 12:24:04,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:24:04,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:04,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:24:04,135 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:24:04,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 12:24:04,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:24:04,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:24:04,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-16 12:24:04,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:04,382 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-16 12:24:04,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-16 12:24:04,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:04,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:04,511 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:24:04,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2022-11-16 12:24:04,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:04,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:04,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:04,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:04,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:04,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:04,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:04,935 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:04,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:24:04,972 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_882 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_882) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2022-11-16 12:24:05,045 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_882 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_882) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-16 12:24:05,109 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_882 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_882) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 5 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-16 12:24:05,114 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_882 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_882) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 6 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2022-11-16 12:24:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 18 not checked. [2022-11-16 12:24:05,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620886774] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:24:05,342 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:24:05,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 30 [2022-11-16 12:24:05,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072434900] [2022-11-16 12:24:05,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:24:05,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 12:24:05,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:05,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 12:24:05,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=16, NotChecked=212, Total=930 [2022-11-16 12:24:05,345 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 31 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 30 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:06,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:06,462 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2022-11-16 12:24:06,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:24:06,463 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 30 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-16 12:24:06,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:06,463 INFO L225 Difference]: With dead ends: 35 [2022-11-16 12:24:06,463 INFO L226 Difference]: Without dead ends: 35 [2022-11-16 12:24:06,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=139, Invalid=1267, Unknown=16, NotChecked=300, Total=1722 [2022-11-16 12:24:06,464 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 178 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:06,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 266 Invalid, 0 Unknown, 178 Unchecked, 0.2s Time] [2022-11-16 12:24:06,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-16 12:24:06,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-11-16 12:24:06,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:06,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2022-11-16 12:24:06,466 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 18 [2022-11-16 12:24:06,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:06,467 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2022-11-16 12:24:06,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 30 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:06,467 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2022-11-16 12:24:06,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 12:24:06,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:06,467 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:06,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:06,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-16 12:24:06,680 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:06,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:06,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2119822872, now seen corresponding path program 9 times [2022-11-16 12:24:06,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:06,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297621339] [2022-11-16 12:24:06,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:06,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:07,380 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:07,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:07,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297621339] [2022-11-16 12:24:07,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297621339] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:24:07,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400089694] [2022-11-16 12:24:07,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:24:07,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:24:07,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:24:07,382 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:24:07,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 12:24:07,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 12:24:07,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:24:07,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-16 12:24:07,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:07,655 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-16 12:24:07,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-16 12:24:07,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:07,728 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-16 12:24:07,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-16 12:24:07,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:07,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:07,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:07,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:07,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:08,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:08,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:08,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:08,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:08,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:08,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:08,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:08,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:24:08,312 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:08,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:24:08,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 61 [2022-11-16 12:24:08,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 59 [2022-11-16 12:24:09,065 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:09,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400089694] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:24:09,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:24:09,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 31 [2022-11-16 12:24:09,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121960997] [2022-11-16 12:24:09,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:24:09,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:24:09,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:09,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:24:09,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=873, Unknown=9, NotChecked=0, Total=992 [2022-11-16 12:24:09,071 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 32 states, 32 states have (on average 1.625) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:09,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:09,844 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2022-11-16 12:24:09,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:24:09,845 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-16 12:24:09,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:09,845 INFO L225 Difference]: With dead ends: 34 [2022-11-16 12:24:09,845 INFO L226 Difference]: Without dead ends: 34 [2022-11-16 12:24:09,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=234, Invalid=1397, Unknown=9, NotChecked=0, Total=1640 [2022-11-16 12:24:09,846 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:09,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 234 Invalid, 0 Unknown, 159 Unchecked, 0.2s Time] [2022-11-16 12:24:09,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-16 12:24:09,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2022-11-16 12:24:09,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:09,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2022-11-16 12:24:09,848 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 18 [2022-11-16 12:24:09,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:09,849 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2022-11-16 12:24:09,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:09,849 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2022-11-16 12:24:09,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 12:24:09,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:09,849 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:09,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:10,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-16 12:24:10,050 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:10,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:10,050 INFO L85 PathProgramCache]: Analyzing trace with hash -116130161, now seen corresponding path program 10 times [2022-11-16 12:24:10,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:24:10,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205961213] [2022-11-16 12:24:10,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:10,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:24:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:24:10,111 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:24:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:24:10,184 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:24:10,185 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:24:10,186 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (25 of 26 remaining) [2022-11-16 12:24:10,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (24 of 26 remaining) [2022-11-16 12:24:10,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (23 of 26 remaining) [2022-11-16 12:24:10,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (22 of 26 remaining) [2022-11-16 12:24:10,189 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (21 of 26 remaining) [2022-11-16 12:24:10,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 26 remaining) [2022-11-16 12:24:10,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 26 remaining) [2022-11-16 12:24:10,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 26 remaining) [2022-11-16 12:24:10,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 26 remaining) [2022-11-16 12:24:10,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 26 remaining) [2022-11-16 12:24:10,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 26 remaining) [2022-11-16 12:24:10,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 26 remaining) [2022-11-16 12:24:10,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 26 remaining) [2022-11-16 12:24:10,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 26 remaining) [2022-11-16 12:24:10,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 26 remaining) [2022-11-16 12:24:10,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 26 remaining) [2022-11-16 12:24:10,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 26 remaining) [2022-11-16 12:24:10,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (8 of 26 remaining) [2022-11-16 12:24:10,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 26 remaining) [2022-11-16 12:24:10,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 26 remaining) [2022-11-16 12:24:10,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (5 of 26 remaining) [2022-11-16 12:24:10,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (4 of 26 remaining) [2022-11-16 12:24:10,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (3 of 26 remaining) [2022-11-16 12:24:10,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (2 of 26 remaining) [2022-11-16 12:24:10,195 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 26 remaining) [2022-11-16 12:24:10,196 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 26 remaining) [2022-11-16 12:24:10,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-16 12:24:10,199 INFO L444 BasicCegarLoop]: Path program histogram: [10, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:10,206 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:24:10,206 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:24:10,235 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,239 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,240 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,240 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,242 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,243 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,243 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,244 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,244 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,244 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,246 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,247 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,248 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,252 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,253 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,253 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,253 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,254 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,254 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,255 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,255 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,261 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,261 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,262 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,262 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,262 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,262 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,263 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,263 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,266 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,267 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,267 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,267 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,267 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,267 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-16 12:24:10,268 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,268 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-16 12:24:10,268 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,268 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,269 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,269 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-16 12:24:10,269 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,269 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-16 12:24:10,269 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,272 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,273 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,273 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-16 12:24:10,273 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,273 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-16 12:24:10,274 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,274 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,274 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:24:10,274 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-16 12:24:10,275 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,275 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-16 12:24:10,275 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:24:10,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:24:10 BasicIcfg [2022-11-16 12:24:10,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:24:10,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:24:10,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:24:10,294 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:24:10,295 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:23:15" (3/4) ... [2022-11-16 12:24:10,298 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 12:24:10,298 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:24:10,298 INFO L158 Benchmark]: Toolchain (without parser) took 57089.11ms. Allocated memory was 111.1MB in the beginning and 339.7MB in the end (delta: 228.6MB). Free memory was 67.0MB in the beginning and 288.0MB in the end (delta: -220.9MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2022-11-16 12:24:10,299 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 111.1MB. Free memory is still 85.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:24:10,299 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1042.09ms. Allocated memory is still 111.1MB. Free memory was 66.8MB in the beginning and 64.1MB in the end (delta: 2.7MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2022-11-16 12:24:10,299 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.92ms. Allocated memory is still 111.1MB. Free memory was 64.1MB in the beginning and 61.6MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:24:10,299 INFO L158 Benchmark]: Boogie Preprocessor took 37.37ms. Allocated memory is still 111.1MB. Free memory was 61.6MB in the beginning and 59.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:24:10,300 INFO L158 Benchmark]: RCFGBuilder took 737.29ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 59.9MB in the beginning and 103.0MB in the end (delta: -43.0MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2022-11-16 12:24:10,300 INFO L158 Benchmark]: TraceAbstraction took 55192.88ms. Allocated memory was 134.2MB in the beginning and 339.7MB in the end (delta: 205.5MB). Free memory was 102.2MB in the beginning and 288.0MB in the end (delta: -185.8MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2022-11-16 12:24:10,300 INFO L158 Benchmark]: Witness Printer took 4.16ms. Allocated memory is still 339.7MB. Free memory is still 288.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:24:10,301 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 111.1MB. Free memory is still 85.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1042.09ms. Allocated memory is still 111.1MB. Free memory was 66.8MB in the beginning and 64.1MB in the end (delta: 2.7MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.92ms. Allocated memory is still 111.1MB. Free memory was 64.1MB in the beginning and 61.6MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.37ms. Allocated memory is still 111.1MB. Free memory was 61.6MB in the beginning and 59.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 737.29ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 59.9MB in the beginning and 103.0MB in the end (delta: -43.0MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. * TraceAbstraction took 55192.88ms. Allocated memory was 134.2MB in the beginning and 339.7MB in the end (delta: 205.5MB). Free memory was 102.2MB in the beginning and 288.0MB in the end (delta: -185.8MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. * Witness Printer took 4.16ms. Allocated memory is still 339.7MB. Free memory is still 288.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.4s, 121 PlacesBefore, 39 PlacesAfterwards, 119 TransitionsBefore, 34 TransitionsAfterwards, 360 CoEnabledTransitionPairs, 6 FixpointIterations, 72 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 134 TotalNumberOfCompositions, 485 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 396, independent: 378, independent conditional: 0, independent unconditional: 378, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 240, independent: 228, independent conditional: 0, independent unconditional: 228, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 240, independent: 227, independent conditional: 0, independent unconditional: 227, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 13, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 88, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 396, independent: 150, independent conditional: 0, independent unconditional: 150, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 240, unknown conditional: 0, unknown unconditional: 240] , Statistics on independence cache: Total cache size (in pairs): 14, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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 - UnprovableResult [Line: 1119]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1107. Possible FailurePath: [L1108] 0 char *v; [L1121] 0 pthread_t t1, t2; [L1122] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, pthread_create(&t1, 0, thread1, 0)=-2, t1={10:0}, t2={9:0}, v={0:0}] [L1123] 0 \read(t1) VAL [\read(t1)=-2, arg={0:0}, t1={10:0}, t2={9:0}, v={0:0}] [L1111] 1 v = malloc(sizeof(char) * 8) [L1112] 1 return 0; [L1123] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-2, \result={0:0}, arg={0:0}, arg={0:0}, t1={10:0}, t2={9:0}, v={-3:0}] [L1124] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t2, 0, thread2, 0)=-1, t1={10:0}, t2={9:0}, v={-3:0}] [L1116] COND TRUE 2 \read(*v) [L1116] FCALL 2 strcpy(v, "Bigshot") [L1117] 2 return 0; [L1125] 0 \read(t2) VAL [\read(t2)=-1, \result={0:0}, arg={0:0}, arg={0:0}, t1={10:0}, t2={9:0}, v={-3:0}] [L1125] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=-1, \result={0:0}, arg={0:0}, arg={0:0}, t1={10:0}, t2={9:0}, v={-3:0}] [L1126] EXPR 0 !v || v[0] == 'B' [L1126] EXPR 0 v[0] [L1126] EXPR 0 !v || v[0] == 'B' [L1126] CALL 0 __VERIFIER_assert(!v || v[0] == 'B') [L1107] COND FALSE 0 !(!expression) [L1126] RET 0 __VERIFIER_assert(!v || v[0] == 'B') [L1127] 0 return 0; [L1127] 0 return 0; [L1127] 0 return 0; - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1107]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1124]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1122]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 152 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 54.8s, OverallIterations: 30, TraceHistogramMax: 8, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 14.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1259 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1259 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1554 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 238 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3647 IncrementalHoareTripleChecker+Invalid, 5439 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 238 mSolverCounterUnsat, 5 mSDtfsCounter, 3647 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 809 GetRequests, 256 SyntacticMatches, 21 SemanticMatches, 532 ConstructedPredicates, 18 IntricatePredicates, 2 DeprecatedPredicates, 2042 ImplicationChecksByTransitivity, 19.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=25, InterpolantAutomatonStates: 241, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 29 MinimizatonAttempts, 228 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 25.3s InterpolantComputationTime, 597 NumberOfCodeBlocks, 589 NumberOfCodeBlocksAsserted, 65 NumberOfCheckSat, 739 ConstructedInterpolants, 170 QuantifiedInterpolants, 13633 SizeOfPredicates, 121 NumberOfNonLiveVariables, 4045 ConjunctsInSsa, 620 ConjunctsInUnsatCore, 61 InterpolantComputations, 14 PerfectInterpolantSequences, 36/529 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-16 12:24:10,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/bigshot_s.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d8c741fd238f074816319de9a9bd5d97cd9b35eb7f53a276be973ea0c31ecbe --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:24:12,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:24:12,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:24:12,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:24:12,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:24:12,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:24:12,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:24:12,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:24:12,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:24:12,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:24:12,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:24:12,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:24:12,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:24:12,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:24:12,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:24:12,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:24:12,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:24:12,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:24:12,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:24:12,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:24:12,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:24:12,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:24:12,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:24:12,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:24:12,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:24:12,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:24:12,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:24:12,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:24:12,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:24:12,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:24:12,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:24:12,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:24:12,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:24:12,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:24:12,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:24:12,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:24:12,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:24:12,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:24:12,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:24:12,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:24:12,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:24:12,779 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-16 12:24:12,815 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:24:12,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:24:12,817 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:24:12,817 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:24:12,818 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:24:12,818 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:24:12,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:24:12,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:24:12,820 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:24:12,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:24:12,822 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:24:12,822 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:24:12,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:24:12,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:24:12,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:24:12,823 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:24:12,823 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:24:12,823 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:24:12,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:24:12,824 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:24:12,824 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:24:12,824 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:24:12,824 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:24:12,824 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:24:12,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:24:12,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:24:12,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:24:12,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:24:12,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:24:12,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:24:12,826 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:24:12,826 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:24:12,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:24:12,827 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d8c741fd238f074816319de9a9bd5d97cd9b35eb7f53a276be973ea0c31ecbe [2022-11-16 12:24:13,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:24:13,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:24:13,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:24:13,231 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:24:13,237 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:24:13,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread/bigshot_s.i [2022-11-16 12:24:13,322 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/data/7252dd515/b28809a8921640d790ea1dcbd9c402c2/FLAG42f321f49 [2022-11-16 12:24:14,030 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:24:14,031 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/sv-benchmarks/c/pthread/bigshot_s.i [2022-11-16 12:24:14,058 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/data/7252dd515/b28809a8921640d790ea1dcbd9c402c2/FLAG42f321f49 [2022-11-16 12:24:14,242 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/data/7252dd515/b28809a8921640d790ea1dcbd9c402c2 [2022-11-16 12:24:14,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:24:14,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:24:14,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:24:14,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:24:14,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:24:14,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:24:14" (1/1) ... [2022-11-16 12:24:14,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e57e3ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:24:14, skipping insertion in model container [2022-11-16 12:24:14,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:24:14" (1/1) ... [2022-11-16 12:24:14,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:24:14,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:24:15,008 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/sv-benchmarks/c/pthread/bigshot_s.i[55202,55215] [2022-11-16 12:24:15,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:24:15,056 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:24:15,102 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/sv-benchmarks/c/pthread/bigshot_s.i[55202,55215] [2022-11-16 12:24:15,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:24:15,205 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:24:15,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:24:15 WrapperNode [2022-11-16 12:24:15,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:24:15,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:24:15,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:24:15,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:24:15,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:24:15" (1/1) ... [2022-11-16 12:24:15,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:24:15" (1/1) ... [2022-11-16 12:24:15,268 INFO L138 Inliner]: procedures = 327, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-11-16 12:24:15,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:24:15,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:24:15,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:24:15,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:24:15,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:24:15" (1/1) ... [2022-11-16 12:24:15,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:24:15" (1/1) ... [2022-11-16 12:24:15,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:24:15" (1/1) ... [2022-11-16 12:24:15,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:24:15" (1/1) ... [2022-11-16 12:24:15,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:24:15" (1/1) ... [2022-11-16 12:24:15,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:24:15" (1/1) ... [2022-11-16 12:24:15,304 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:24:15" (1/1) ... [2022-11-16 12:24:15,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:24:15" (1/1) ... [2022-11-16 12:24:15,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:24:15,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:24:15,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:24:15,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:24:15,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:24:15" (1/1) ... [2022-11-16 12:24:15,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:24:15,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:24:15,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:24:15,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-16 12:24:15,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 12:24:15,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:24:15,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:24:15,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 12:24:15,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 12:24:15,408 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:24:15,410 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:24:15,411 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:24:15,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:24:15,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:24:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-16 12:24:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:24:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:24:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:24:15,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:24:15,416 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:24:15,680 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:24:15,683 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:24:16,159 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:24:16,167 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:24:16,169 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:24:16,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:24:16 BoogieIcfgContainer [2022-11-16 12:24:16,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:24:16,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:24:16,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:24:16,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:24:16,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:24:14" (1/3) ... [2022-11-16 12:24:16,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685963aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:24:16, skipping insertion in model container [2022-11-16 12:24:16,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:24:15" (2/3) ... [2022-11-16 12:24:16,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685963aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:24:16, skipping insertion in model container [2022-11-16 12:24:16,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:24:16" (3/3) ... [2022-11-16 12:24:16,183 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s.i [2022-11-16 12:24:16,209 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:24:16,210 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-16 12:24:16,210 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:24:16,321 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:24:16,358 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 12:24:16,374 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 120 transitions, 256 flow [2022-11-16 12:24:16,377 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 120 transitions, 256 flow [2022-11-16 12:24:16,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 120 transitions, 256 flow [2022-11-16 12:24:16,466 INFO L130 PetriNetUnfolder]: 5/118 cut-off events. [2022-11-16 12:24:16,466 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:24:16,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 118 events. 5/118 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 153 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2022-11-16 12:24:16,470 INFO L119 LiptonReduction]: Number of co-enabled transitions 360 [2022-11-16 12:24:32,634 INFO L134 LiptonReduction]: Checked pairs total: 464 [2022-11-16 12:24:32,634 INFO L136 LiptonReduction]: Total number of compositions: 139 [2022-11-16 12:24:32,643 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 34 transitions, 84 flow [2022-11-16 12:24:32,659 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 57 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 56 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:32,679 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:24:32,686 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;@305d13da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:24:32,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-16 12:24:32,688 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 56 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:32,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-16 12:24:32,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:32,694 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-16 12:24:32,695 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:32,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:32,701 INFO L85 PathProgramCache]: Analyzing trace with hash 465, now seen corresponding path program 1 times [2022-11-16 12:24:32,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:32,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383696274] [2022-11-16 12:24:32,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:32,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:32,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:32,726 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:32,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 12:24:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:32,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 12:24:32,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:32,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:32,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:32,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383696274] [2022-11-16 12:24:32,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [383696274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:32,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:32,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-16 12:24:32,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200323033] [2022-11-16 12:24:32,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:32,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:24:32,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:32,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:24:32,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:24:32,871 INFO L87 Difference]: Start difference. First operand has 57 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 56 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:33,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:33,040 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2022-11-16 12:24:33,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:24:33,043 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-11-16 12:24:33,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:33,054 INFO L225 Difference]: With dead ends: 47 [2022-11-16 12:24:33,066 INFO L226 Difference]: Without dead ends: 47 [2022-11-16 12:24:33,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:24:33,072 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:33,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:24:33,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-16 12:24:33,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-16 12:24:33,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 3.0) internal successors, (75), 46 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 75 transitions. [2022-11-16 12:24:33,150 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 75 transitions. Word has length 1 [2022-11-16 12:24:33,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:33,167 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 75 transitions. [2022-11-16 12:24:33,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:33,167 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 75 transitions. [2022-11-16 12:24:33,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 12:24:33,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:33,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 12:24:33,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:33,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:33,393 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:33,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:33,394 INFO L85 PathProgramCache]: Analyzing trace with hash 457424, now seen corresponding path program 1 times [2022-11-16 12:24:33,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:33,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135125933] [2022-11-16 12:24:33,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:33,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:33,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:33,400 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:33,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 12:24:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:33,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:24:33,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:33,608 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 12:24:33,609 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-16 12:24:33,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:33,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:33,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:33,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135125933] [2022-11-16 12:24:33,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1135125933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:33,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:33,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:24:33,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928337918] [2022-11-16 12:24:33,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:33,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:24:33,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:33,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:24:33,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:24:33,679 INFO L87 Difference]: Start difference. First operand 47 states and 75 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:33,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:33,794 INFO L93 Difference]: Finished difference Result 45 states and 72 transitions. [2022-11-16 12:24:33,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:24:33,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 12:24:33,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:33,796 INFO L225 Difference]: With dead ends: 45 [2022-11-16 12:24:33,797 INFO L226 Difference]: Without dead ends: 45 [2022-11-16 12:24:33,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:24:33,798 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:33,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:24:33,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-16 12:24:33,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-16 12:24:33,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 24 states have (on average 3.0) internal successors, (72), 44 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:33,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 72 transitions. [2022-11-16 12:24:33,806 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 72 transitions. Word has length 3 [2022-11-16 12:24:33,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:33,806 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 72 transitions. [2022-11-16 12:24:33,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:33,807 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 72 transitions. [2022-11-16 12:24:33,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 12:24:33,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:33,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 12:24:33,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:34,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:34,020 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:34,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:34,021 INFO L85 PathProgramCache]: Analyzing trace with hash 457425, now seen corresponding path program 1 times [2022-11-16 12:24:34,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:34,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989623091] [2022-11-16 12:24:34,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:34,022 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:34,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:34,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:34,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 12:24:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:34,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:24:34,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:34,150 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:24:34,150 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 1 case distinctions, treesize of input 9 treesize of output 11 [2022-11-16 12:24:34,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:34,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:34,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:34,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989623091] [2022-11-16 12:24:34,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [989623091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:34,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:34,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:24:34,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004374389] [2022-11-16 12:24:34,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:34,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:24:34,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:34,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:24:34,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:24:34,206 INFO L87 Difference]: Start difference. First operand 45 states and 72 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:34,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:34,342 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2022-11-16 12:24:34,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:24:34,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 12:24:34,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:34,346 INFO L225 Difference]: With dead ends: 44 [2022-11-16 12:24:34,346 INFO L226 Difference]: Without dead ends: 44 [2022-11-16 12:24:34,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:24:34,347 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:34,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:24:34,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-16 12:24:34,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-16 12:24:34,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 43 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:34,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 70 transitions. [2022-11-16 12:24:34,359 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 70 transitions. Word has length 3 [2022-11-16 12:24:34,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:34,359 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 70 transitions. [2022-11-16 12:24:34,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:34,360 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 70 transitions. [2022-11-16 12:24:34,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 12:24:34,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:34,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 12:24:34,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:34,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:34,579 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:34,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:34,579 INFO L85 PathProgramCache]: Analyzing trace with hash 14181590, now seen corresponding path program 1 times [2022-11-16 12:24:34,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:34,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363051313] [2022-11-16 12:24:34,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:34,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:34,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:34,581 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:34,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 12:24:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:34,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:24:34,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:34,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:34,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-16 12:24:34,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 12:24:34,803 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:24:34,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-16 12:24:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:34,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:34,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:34,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363051313] [2022-11-16 12:24:34,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363051313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:34,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:34,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:24:34,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797892694] [2022-11-16 12:24:34,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:34,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:24:34,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:34,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:24:34,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:24:34,879 INFO L87 Difference]: Start difference. First operand 44 states and 70 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) 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) [2022-11-16 12:24:35,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:35,003 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2022-11-16 12:24:35,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:24:35,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) 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 [2022-11-16 12:24:35,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:35,006 INFO L225 Difference]: With dead ends: 44 [2022-11-16 12:24:35,006 INFO L226 Difference]: Without dead ends: 44 [2022-11-16 12:24:35,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:24:35,007 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:35,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 24 Unchecked, 0.1s Time] [2022-11-16 12:24:35,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-16 12:24:35,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2022-11-16 12:24:35,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 23 states have (on average 3.0) internal successors, (69), 42 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 69 transitions. [2022-11-16 12:24:35,013 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 69 transitions. Word has length 4 [2022-11-16 12:24:35,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:35,013 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 69 transitions. [2022-11-16 12:24:35,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) 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) [2022-11-16 12:24:35,013 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 69 transitions. [2022-11-16 12:24:35,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 12:24:35,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:35,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 12:24:35,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:35,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:35,227 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:35,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:35,228 INFO L85 PathProgramCache]: Analyzing trace with hash 742604810, now seen corresponding path program 1 times [2022-11-16 12:24:35,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:35,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390313544] [2022-11-16 12:24:35,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:35,229 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:35,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:35,230 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:35,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 12:24:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:35,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:24:35,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:35,357 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:24:35,357 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-16 12:24:35,382 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:24:35,382 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 1 case distinctions, treesize of input 9 treesize of output 19 [2022-11-16 12:24:35,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:35,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:24:35,471 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:24:35,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:24:35,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:35,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:35,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:35,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390313544] [2022-11-16 12:24:35,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390313544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:35,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:35,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:24:35,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39023231] [2022-11-16 12:24:35,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:35,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:24:35,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:35,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:24:35,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:24:35,494 INFO L87 Difference]: Start difference. First operand 43 states and 69 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:35,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:35,584 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2022-11-16 12:24:35,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:24:35,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-16 12:24:35,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:35,585 INFO L225 Difference]: With dead ends: 27 [2022-11-16 12:24:35,586 INFO L226 Difference]: Without dead ends: 27 [2022-11-16 12:24:35,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:24:35,587 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:35,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:24:35,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-16 12:24:35,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-16 12:24:35,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:35,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2022-11-16 12:24:35,591 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 6 [2022-11-16 12:24:35,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:35,591 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2022-11-16 12:24:35,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:35,591 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2022-11-16 12:24:35,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:24:35,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:35,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:35,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:35,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:35,801 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:35,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:35,802 INFO L85 PathProgramCache]: Analyzing trace with hash -436376638, now seen corresponding path program 1 times [2022-11-16 12:24:35,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:35,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417142341] [2022-11-16 12:24:35,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:35,803 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:35,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:35,804 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:35,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 12:24:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:35,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:24:35,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:35,964 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-11-16 12:24:35,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 42 [2022-11-16 12:24:36,021 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:24:36,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-16 12:24:36,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:36,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:36,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:36,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417142341] [2022-11-16 12:24:36,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417142341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:36,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:36,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:24:36,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953951576] [2022-11-16 12:24:36,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:36,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:24:36,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:36,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:24:36,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:24:36,160 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:36,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:36,276 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2022-11-16 12:24:36,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:24:36,277 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 12:24:36,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:36,278 INFO L225 Difference]: With dead ends: 31 [2022-11-16 12:24:36,278 INFO L226 Difference]: Without dead ends: 31 [2022-11-16 12:24:36,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:24:36,279 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:36,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:24:36,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-16 12:24:36,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2022-11-16 12:24:36,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:36,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2022-11-16 12:24:36,283 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 9 [2022-11-16 12:24:36,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:36,284 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-11-16 12:24:36,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:36,285 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2022-11-16 12:24:36,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:24:36,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:36,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:36,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:36,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:36,486 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:36,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:36,487 INFO L85 PathProgramCache]: Analyzing trace with hash -436376521, now seen corresponding path program 1 times [2022-11-16 12:24:36,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:36,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141409093] [2022-11-16 12:24:36,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:36,487 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:36,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:36,489 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:36,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 12:24:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:36,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:24:36,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:36,590 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 [2022-11-16 12:24:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:36,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:36,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:36,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141409093] [2022-11-16 12:24:36,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141409093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:36,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:36,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:24:36,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686694980] [2022-11-16 12:24:36,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:36,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:24:36,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:36,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:24:36,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:24:36,670 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:36,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:36,826 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2022-11-16 12:24:36,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:24:36,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 12:24:36,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:36,828 INFO L225 Difference]: With dead ends: 36 [2022-11-16 12:24:36,828 INFO L226 Difference]: Without dead ends: 36 [2022-11-16 12:24:36,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:24:36,829 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 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 [2022-11-16 12:24:36,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:24:36,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-16 12:24:36,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2022-11-16 12:24:36,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 2.1) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:36,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 42 transitions. [2022-11-16 12:24:36,833 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 42 transitions. Word has length 9 [2022-11-16 12:24:36,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:36,833 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 42 transitions. [2022-11-16 12:24:36,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:36,833 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 42 transitions. [2022-11-16 12:24:36,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:24:36,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:36,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:36,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:37,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:37,034 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:37,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:37,035 INFO L85 PathProgramCache]: Analyzing trace with hash -436376552, now seen corresponding path program 1 times [2022-11-16 12:24:37,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:37,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735086792] [2022-11-16 12:24:37,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:37,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:37,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:37,037 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:37,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 12:24:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:37,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:24:37,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:37,133 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 7 [2022-11-16 12:24:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:37,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:37,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:37,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735086792] [2022-11-16 12:24:37,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735086792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:37,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:37,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:24:37,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009000244] [2022-11-16 12:24:37,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:37,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:24:37,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:37,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:24:37,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:24:37,157 INFO L87 Difference]: Start difference. First operand 26 states and 42 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:37,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:37,279 INFO L93 Difference]: Finished difference Result 27 states and 40 transitions. [2022-11-16 12:24:37,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:24:37,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 12:24:37,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:37,281 INFO L225 Difference]: With dead ends: 27 [2022-11-16 12:24:37,281 INFO L226 Difference]: Without dead ends: 27 [2022-11-16 12:24:37,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:24:37,282 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:37,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:24:37,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-16 12:24:37,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-11-16 12:24:37,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.894736842105263) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:37,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 36 transitions. [2022-11-16 12:24:37,286 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 36 transitions. Word has length 9 [2022-11-16 12:24:37,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:37,286 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 36 transitions. [2022-11-16 12:24:37,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:37,286 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 36 transitions. [2022-11-16 12:24:37,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:24:37,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:37,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:37,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:37,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:37,496 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:37,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:37,497 INFO L85 PathProgramCache]: Analyzing trace with hash -436376579, now seen corresponding path program 1 times [2022-11-16 12:24:37,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:37,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970798226] [2022-11-16 12:24:37,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:37,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:37,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:37,500 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:37,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 12:24:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:37,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:24:37,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:37,729 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-16 12:24:37,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-16 12:24:37,784 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 12:24:37,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-16 12:24:38,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:38,032 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:24:38,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 38 [2022-11-16 12:24:38,099 INFO L321 Elim1Store]: treesize reduction 6, result has 80.6 percent of original size [2022-11-16 12:24:38,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 53 [2022-11-16 12:24:38,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:38,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:38,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:38,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970798226] [2022-11-16 12:24:38,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970798226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:38,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:38,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:24:38,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813603279] [2022-11-16 12:24:38,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:38,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:24:38,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:38,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:24:38,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:24:38,402 INFO L87 Difference]: Start difference. First operand 23 states and 36 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:38,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:38,431 INFO L93 Difference]: Finished difference Result 28 states and 45 transitions. [2022-11-16 12:24:38,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:24:38,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 12:24:38,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:38,434 INFO L225 Difference]: With dead ends: 28 [2022-11-16 12:24:38,434 INFO L226 Difference]: Without dead ends: 28 [2022-11-16 12:24:38,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:24:38,435 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:38,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2022-11-16 12:24:38,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-16 12:24:38,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-16 12:24:38,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.875) internal successors, (45), 27 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:38,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 45 transitions. [2022-11-16 12:24:38,439 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 45 transitions. Word has length 9 [2022-11-16 12:24:38,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:38,439 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 45 transitions. [2022-11-16 12:24:38,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:38,440 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 45 transitions. [2022-11-16 12:24:38,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:24:38,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:38,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:38,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:38,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:38,650 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:38,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:38,650 INFO L85 PathProgramCache]: Analyzing trace with hash -440539101, now seen corresponding path program 2 times [2022-11-16 12:24:38,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:38,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539906518] [2022-11-16 12:24:38,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:24:38,651 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:38,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:38,652 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:38,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-16 12:24:38,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:24:38,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:24:38,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:24:38,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:38,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:38,828 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 12:24:38,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-16 12:24:38,887 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-16 12:24:38,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-16 12:24:39,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:39,045 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:24:39,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 38 [2022-11-16 12:24:39,098 INFO L321 Elim1Store]: treesize reduction 6, result has 80.6 percent of original size [2022-11-16 12:24:39,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 53 [2022-11-16 12:24:39,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:39,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:39,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:39,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539906518] [2022-11-16 12:24:39,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539906518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:39,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:39,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:24:39,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583885526] [2022-11-16 12:24:39,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:39,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:24:39,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:39,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:24:39,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:24:39,384 INFO L87 Difference]: Start difference. First operand 28 states and 45 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:39,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:39,438 INFO L93 Difference]: Finished difference Result 28 states and 44 transitions. [2022-11-16 12:24:39,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:24:39,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 12:24:39,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:39,439 INFO L225 Difference]: With dead ends: 28 [2022-11-16 12:24:39,439 INFO L226 Difference]: Without dead ends: 28 [2022-11-16 12:24:39,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:24:39,440 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:39,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2022-11-16 12:24:39,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-16 12:24:39,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2022-11-16 12:24:39,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:39,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2022-11-16 12:24:39,444 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 35 transitions. Word has length 9 [2022-11-16 12:24:39,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:39,444 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 35 transitions. [2022-11-16 12:24:39,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:39,444 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 35 transitions. [2022-11-16 12:24:39,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:24:39,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:39,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:39,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:39,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:39,655 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:39,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:39,656 INFO L85 PathProgramCache]: Analyzing trace with hash -642787846, now seen corresponding path program 1 times [2022-11-16 12:24:39,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:39,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809970991] [2022-11-16 12:24:39,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:39,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:39,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:39,658 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:39,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 12:24:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:39,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:24:39,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:39,854 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-16 12:24:39,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-16 12:24:39,903 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 12:24:39,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-16 12:24:40,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:40,059 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:24:40,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 38 [2022-11-16 12:24:40,111 INFO L321 Elim1Store]: treesize reduction 6, result has 80.6 percent of original size [2022-11-16 12:24:40,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 53 [2022-11-16 12:24:40,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:40,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:40,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:40,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809970991] [2022-11-16 12:24:40,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809970991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:40,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:40,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:24:40,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176320810] [2022-11-16 12:24:40,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:40,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:24:40,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:40,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:24:40,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:24:40,354 INFO L87 Difference]: Start difference. First operand 23 states and 35 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:40,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:40,385 INFO L93 Difference]: Finished difference Result 31 states and 51 transitions. [2022-11-16 12:24:40,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:24:40,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 12:24:40,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:40,387 INFO L225 Difference]: With dead ends: 31 [2022-11-16 12:24:40,387 INFO L226 Difference]: Without dead ends: 31 [2022-11-16 12:24:40,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:24:40,387 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:40,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2022-11-16 12:24:40,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-16 12:24:40,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2022-11-16 12:24:40,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.8) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:40,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 45 transitions. [2022-11-16 12:24:40,391 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 45 transitions. Word has length 10 [2022-11-16 12:24:40,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:40,391 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 45 transitions. [2022-11-16 12:24:40,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:40,391 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 45 transitions. [2022-11-16 12:24:40,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:24:40,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:40,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:40,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:40,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:40,600 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:40,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:40,601 INFO L85 PathProgramCache]: Analyzing trace with hash -642770176, now seen corresponding path program 2 times [2022-11-16 12:24:40,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:40,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932374853] [2022-11-16 12:24:40,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:24:40,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:40,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:40,602 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:40,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-16 12:24:40,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:24:40,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:24:40,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:24:40,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:40,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:40,770 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 12:24:40,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-16 12:24:40,828 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-16 12:24:40,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-16 12:24:40,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:40,987 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:24:40,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 38 [2022-11-16 12:24:41,035 INFO L321 Elim1Store]: treesize reduction 6, result has 80.6 percent of original size [2022-11-16 12:24:41,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 53 [2022-11-16 12:24:41,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:41,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:41,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:41,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932374853] [2022-11-16 12:24:41,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932374853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:41,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:41,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:24:41,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648703814] [2022-11-16 12:24:41,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:41,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:24:41,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:41,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:24:41,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:24:41,337 INFO L87 Difference]: Start difference. First operand 29 states and 45 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:41,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:41,365 INFO L93 Difference]: Finished difference Result 31 states and 50 transitions. [2022-11-16 12:24:41,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:24:41,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 12:24:41,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:41,367 INFO L225 Difference]: With dead ends: 31 [2022-11-16 12:24:41,367 INFO L226 Difference]: Without dead ends: 31 [2022-11-16 12:24:41,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:24:41,367 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:41,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2022-11-16 12:24:41,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-16 12:24:41,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-11-16 12:24:41,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 29 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:41,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 48 transitions. [2022-11-16 12:24:41,371 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 48 transitions. Word has length 10 [2022-11-16 12:24:41,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:41,371 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 48 transitions. [2022-11-16 12:24:41,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:41,372 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 48 transitions. [2022-11-16 12:24:41,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:24:41,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:41,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:41,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:41,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:41,591 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:41,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:41,591 INFO L85 PathProgramCache]: Analyzing trace with hash -642768909, now seen corresponding path program 1 times [2022-11-16 12:24:41,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:41,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130157637] [2022-11-16 12:24:41,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:41,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:41,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:41,593 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:41,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-16 12:24:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:41,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:24:41,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:41,711 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 [2022-11-16 12:24:41,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:41,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:24:41,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:41,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:41,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130157637] [2022-11-16 12:24:41,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130157637] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:24:41,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:24:41,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-16 12:24:41,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62114196] [2022-11-16 12:24:41,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:24:41,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:24:41,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:41,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:24:41,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:24:41,896 INFO L87 Difference]: Start difference. First operand 30 states and 48 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:42,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:42,324 INFO L93 Difference]: Finished difference Result 63 states and 88 transitions. [2022-11-16 12:24:42,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:24:42,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 12:24:42,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:42,326 INFO L225 Difference]: With dead ends: 63 [2022-11-16 12:24:42,326 INFO L226 Difference]: Without dead ends: 63 [2022-11-16 12:24:42,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:24:42,327 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 76 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:42,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 0 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:24:42,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-16 12:24:42,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 36. [2022-11-16 12:24:42,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 2.15625) internal successors, (69), 35 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:42,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 69 transitions. [2022-11-16 12:24:42,331 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 69 transitions. Word has length 10 [2022-11-16 12:24:42,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:42,331 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 69 transitions. [2022-11-16 12:24:42,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:42,332 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 69 transitions. [2022-11-16 12:24:42,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:24:42,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:42,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:42,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-11-16 12:24:42,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:42,544 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:42,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:42,545 INFO L85 PathProgramCache]: Analyzing trace with hash -642768967, now seen corresponding path program 1 times [2022-11-16 12:24:42,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:42,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263219555] [2022-11-16 12:24:42,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:42,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:42,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:42,546 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:42,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-16 12:24:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:42,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:24:42,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:42,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:42,717 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 12:24:42,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-16 12:24:42,771 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-16 12:24:42,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-16 12:24:42,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:42,927 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:24:42,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 38 [2022-11-16 12:24:42,988 INFO L321 Elim1Store]: treesize reduction 6, result has 80.6 percent of original size [2022-11-16 12:24:42,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 53 [2022-11-16 12:24:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:43,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:24:43,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:43,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:43,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263219555] [2022-11-16 12:24:43,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263219555] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:24:43,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:24:43,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-16 12:24:43,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832140380] [2022-11-16 12:24:43,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:24:43,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:24:43,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:43,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:24:43,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:24:43,524 INFO L87 Difference]: Start difference. First operand 36 states and 69 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:43,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:43,586 INFO L93 Difference]: Finished difference Result 39 states and 75 transitions. [2022-11-16 12:24:43,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:24:43,587 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 12:24:43,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:43,588 INFO L225 Difference]: With dead ends: 39 [2022-11-16 12:24:43,588 INFO L226 Difference]: Without dead ends: 39 [2022-11-16 12:24:43,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:24:43,589 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:43,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2022-11-16 12:24:43,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-16 12:24:43,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2022-11-16 12:24:43,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 37 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:43,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 75 transitions. [2022-11-16 12:24:43,593 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 75 transitions. Word has length 10 [2022-11-16 12:24:43,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:43,593 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 75 transitions. [2022-11-16 12:24:43,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:43,593 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 75 transitions. [2022-11-16 12:24:43,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:24:43,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:43,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:43,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:43,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:43,803 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:43,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:43,804 INFO L85 PathProgramCache]: Analyzing trace with hash -771826028, now seen corresponding path program 3 times [2022-11-16 12:24:43,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:43,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118055241] [2022-11-16 12:24:43,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:24:43,804 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:43,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:43,805 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:43,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-16 12:24:43,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-16 12:24:43,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:24:43,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:24:43,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:43,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:43,981 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 12:24:43,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-16 12:24:44,039 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-16 12:24:44,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-16 12:24:44,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:44,150 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:24:44,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 38 [2022-11-16 12:24:44,197 INFO L321 Elim1Store]: treesize reduction 6, result has 80.6 percent of original size [2022-11-16 12:24:44,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 53 [2022-11-16 12:24:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:44,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:44,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:44,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118055241] [2022-11-16 12:24:44,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118055241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:44,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:44,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:24:44,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482112731] [2022-11-16 12:24:44,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:44,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:24:44,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:44,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:24:44,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:24:44,463 INFO L87 Difference]: Start difference. First operand 38 states and 75 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:44,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:44,514 INFO L93 Difference]: Finished difference Result 44 states and 81 transitions. [2022-11-16 12:24:44,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:24:44,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 12:24:44,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:44,515 INFO L225 Difference]: With dead ends: 44 [2022-11-16 12:24:44,515 INFO L226 Difference]: Without dead ends: 44 [2022-11-16 12:24:44,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:24:44,516 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:44,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 59 Unchecked, 0.0s Time] [2022-11-16 12:24:44,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-16 12:24:44,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-11-16 12:24:44,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 2.212121212121212) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:44,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 73 transitions. [2022-11-16 12:24:44,519 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 73 transitions. Word has length 10 [2022-11-16 12:24:44,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:44,520 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 73 transitions. [2022-11-16 12:24:44,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:44,520 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 73 transitions. [2022-11-16 12:24:44,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:24:44,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:44,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:44,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:44,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:44,730 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:44,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:44,731 INFO L85 PathProgramCache]: Analyzing trace with hash -771808358, now seen corresponding path program 4 times [2022-11-16 12:24:44,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:44,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850034263] [2022-11-16 12:24:44,731 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:24:44,731 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:44,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:44,733 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:44,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-16 12:24:44,845 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:24:44,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:24:44,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:24:44,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:44,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:44,921 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 12:24:44,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-16 12:24:44,978 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-16 12:24:44,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-16 12:24:45,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:45,106 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:24:45,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 38 [2022-11-16 12:24:45,157 INFO L321 Elim1Store]: treesize reduction 6, result has 80.6 percent of original size [2022-11-16 12:24:45,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 53 [2022-11-16 12:24:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:45,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:45,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:45,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850034263] [2022-11-16 12:24:45,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850034263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:45,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:45,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:24:45,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775413530] [2022-11-16 12:24:45,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:45,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:24:45,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:45,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:24:45,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:24:45,434 INFO L87 Difference]: Start difference. First operand 37 states and 73 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:45,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:45,488 INFO L93 Difference]: Finished difference Result 57 states and 107 transitions. [2022-11-16 12:24:45,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:24:45,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 12:24:45,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:45,490 INFO L225 Difference]: With dead ends: 57 [2022-11-16 12:24:45,490 INFO L226 Difference]: Without dead ends: 57 [2022-11-16 12:24:45,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:24:45,491 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:45,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 89 Unchecked, 0.1s Time] [2022-11-16 12:24:45,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-16 12:24:45,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 36. [2022-11-16 12:24:45,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 2.1875) internal successors, (70), 35 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:45,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 70 transitions. [2022-11-16 12:24:45,494 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 70 transitions. Word has length 10 [2022-11-16 12:24:45,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:45,494 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 70 transitions. [2022-11-16 12:24:45,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:45,495 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 70 transitions. [2022-11-16 12:24:45,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:24:45,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:45,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:45,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:45,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:45,703 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:45,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:45,704 INFO L85 PathProgramCache]: Analyzing trace with hash -771807149, now seen corresponding path program 2 times [2022-11-16 12:24:45,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:45,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509490402] [2022-11-16 12:24:45,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:24:45,705 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:45,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:45,706 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:45,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-16 12:24:45,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:24:45,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:24:45,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:24:45,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:45,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:45,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:45,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:45,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-16 12:24:45,934 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-16 12:24:45,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-16 12:24:45,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:45,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:24:46,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:46,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:24:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:46,232 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:46,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509490402] [2022-11-16 12:24:46,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509490402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:24:46,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:24:46,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-16 12:24:46,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863004418] [2022-11-16 12:24:46,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:24:46,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:24:46,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:46,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:24:46,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:24:46,235 INFO L87 Difference]: Start difference. First operand 36 states and 70 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:46,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:46,780 INFO L93 Difference]: Finished difference Result 78 states and 116 transitions. [2022-11-16 12:24:46,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:24:46,781 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 12:24:46,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:46,781 INFO L225 Difference]: With dead ends: 78 [2022-11-16 12:24:46,782 INFO L226 Difference]: Without dead ends: 78 [2022-11-16 12:24:46,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:24:46,782 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:46,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 144 Invalid, 0 Unknown, 43 Unchecked, 0.4s Time] [2022-11-16 12:24:46,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-16 12:24:46,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 42. [2022-11-16 12:24:46,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 41 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:46,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 81 transitions. [2022-11-16 12:24:46,787 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 81 transitions. Word has length 10 [2022-11-16 12:24:46,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:46,787 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 81 transitions. [2022-11-16 12:24:46,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:46,787 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 81 transitions. [2022-11-16 12:24:46,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:24:46,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:46,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:46,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:46,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:46,995 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:46,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:46,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1548416348, now seen corresponding path program 1 times [2022-11-16 12:24:46,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:46,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020802542] [2022-11-16 12:24:46,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:46,996 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:46,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:46,997 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:47,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-16 12:24:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:47,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:24:47,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:47,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:47,189 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-16 12:24:47,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-16 12:24:47,248 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-16 12:24:47,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-16 12:24:47,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:47,385 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 12:24:47,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 38 [2022-11-16 12:24:47,430 INFO L321 Elim1Store]: treesize reduction 6, result has 80.6 percent of original size [2022-11-16 12:24:47,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 53 [2022-11-16 12:24:47,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:47,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:24:47,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:47,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:47,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020802542] [2022-11-16 12:24:47,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020802542] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:24:47,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:24:47,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-16 12:24:47,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085894220] [2022-11-16 12:24:47,960 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:24:47,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:24:47,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:47,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:24:47,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:24:47,961 INFO L87 Difference]: Start difference. First operand 42 states and 81 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) 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) [2022-11-16 12:24:48,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:48,053 INFO L93 Difference]: Finished difference Result 48 states and 90 transitions. [2022-11-16 12:24:48,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:24:48,054 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) 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 11 [2022-11-16 12:24:48,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:48,055 INFO L225 Difference]: With dead ends: 48 [2022-11-16 12:24:48,055 INFO L226 Difference]: Without dead ends: 48 [2022-11-16 12:24:48,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:24:48,056 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:48,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2022-11-16 12:24:48,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-16 12:24:48,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2022-11-16 12:24:48,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 2.1219512195121952) internal successors, (87), 44 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:48,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 87 transitions. [2022-11-16 12:24:48,059 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 87 transitions. Word has length 11 [2022-11-16 12:24:48,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:48,059 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 87 transitions. [2022-11-16 12:24:48,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) 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) [2022-11-16 12:24:48,059 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 87 transitions. [2022-11-16 12:24:48,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:24:48,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:48,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:48,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:48,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:48,267 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:48,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:48,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1548403989, now seen corresponding path program 1 times [2022-11-16 12:24:48,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:48,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710788114] [2022-11-16 12:24:48,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:48,268 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:48,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:48,269 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:48,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-16 12:24:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:48,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:24:48,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:48,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:48,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:48,380 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:48,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710788114] [2022-11-16 12:24:48,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710788114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:48,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:48,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:24:48,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718526800] [2022-11-16 12:24:48,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:48,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:24:48,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:48,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:24:48,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:24:48,382 INFO L87 Difference]: Start difference. First operand 45 states and 87 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:48,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:48,450 INFO L93 Difference]: Finished difference Result 45 states and 83 transitions. [2022-11-16 12:24:48,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:24:48,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 12:24:48,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:48,452 INFO L225 Difference]: With dead ends: 45 [2022-11-16 12:24:48,452 INFO L226 Difference]: Without dead ends: 45 [2022-11-16 12:24:48,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:24:48,453 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:48,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:24:48,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-16 12:24:48,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-16 12:24:48,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 2.024390243902439) internal successors, (83), 44 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:48,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 83 transitions. [2022-11-16 12:24:48,456 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 83 transitions. Word has length 11 [2022-11-16 12:24:48,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:48,456 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 83 transitions. [2022-11-16 12:24:48,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:48,457 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 83 transitions. [2022-11-16 12:24:48,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:24:48,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:48,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:48,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:48,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:48,669 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:48,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:48,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1548964118, now seen corresponding path program 2 times [2022-11-16 12:24:48,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:48,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498519430] [2022-11-16 12:24:48,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:24:48,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:48,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:48,671 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:48,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-16 12:24:48,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:24:48,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:24:48,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:24:48,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:48,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:48,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:48,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:48,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-16 12:24:48,856 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-16 12:24:48,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-16 12:24:48,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:48,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:24:49,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:49,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:24:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:49,167 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:49,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498519430] [2022-11-16 12:24:49,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498519430] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:24:49,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:24:49,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-16 12:24:49,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309513482] [2022-11-16 12:24:49,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:24:49,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:24:49,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:49,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:24:49,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:24:49,169 INFO L87 Difference]: Start difference. First operand 45 states and 83 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) 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) [2022-11-16 12:24:49,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:49,592 INFO L93 Difference]: Finished difference Result 71 states and 106 transitions. [2022-11-16 12:24:49,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:24:49,593 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) 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 11 [2022-11-16 12:24:49,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:49,593 INFO L225 Difference]: With dead ends: 71 [2022-11-16 12:24:49,594 INFO L226 Difference]: Without dead ends: 71 [2022-11-16 12:24:49,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:24:49,594 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 52 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:49,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 0 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 96 Invalid, 0 Unknown, 50 Unchecked, 0.3s Time] [2022-11-16 12:24:49,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-16 12:24:49,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 29. [2022-11-16 12:24:49,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.88) internal successors, (47), 28 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) [2022-11-16 12:24:49,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 47 transitions. [2022-11-16 12:24:49,597 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 47 transitions. Word has length 11 [2022-11-16 12:24:49,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:49,597 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 47 transitions. [2022-11-16 12:24:49,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) 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) [2022-11-16 12:24:49,597 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 47 transitions. [2022-11-16 12:24:49,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 12:24:49,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:49,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:49,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:49,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:49,807 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:49,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:49,808 INFO L85 PathProgramCache]: Analyzing trace with hash 756281292, now seen corresponding path program 1 times [2022-11-16 12:24:49,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:49,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861732492] [2022-11-16 12:24:49,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:49,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:49,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:49,809 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:49,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-16 12:24:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:49,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:24:49,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:49,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-11-16 12:24:50,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:50,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:50,001 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:50,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861732492] [2022-11-16 12:24:50,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861732492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:50,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:50,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:24:50,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088942197] [2022-11-16 12:24:50,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:50,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:24:50,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:50,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:24:50,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:24:50,002 INFO L87 Difference]: Start difference. First operand 29 states and 47 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:50,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:50,145 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2022-11-16 12:24:50,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:24:50,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-16 12:24:50,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:50,146 INFO L225 Difference]: With dead ends: 33 [2022-11-16 12:24:50,146 INFO L226 Difference]: Without dead ends: 33 [2022-11-16 12:24:50,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:24:50,147 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:50,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:24:50,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-16 12:24:50,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-11-16 12:24:50,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:50,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 50 transitions. [2022-11-16 12:24:50,150 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 50 transitions. Word has length 12 [2022-11-16 12:24:50,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:50,151 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 50 transitions. [2022-11-16 12:24:50,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:50,151 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 50 transitions. [2022-11-16 12:24:50,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 12:24:50,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:50,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:50,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:50,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:50,363 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:50,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:50,363 INFO L85 PathProgramCache]: Analyzing trace with hash 756281280, now seen corresponding path program 1 times [2022-11-16 12:24:50,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:50,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914369524] [2022-11-16 12:24:50,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:50,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:50,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:50,365 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:50,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-16 12:24:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:50,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:24:50,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:50,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:50,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:24:50,542 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-16 12:24:50,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:24:50,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:24:50,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:50,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:50,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:50,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914369524] [2022-11-16 12:24:50,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914369524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:50,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:50,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:24:50,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044506595] [2022-11-16 12:24:50,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:50,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:24:50,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:50,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:24:50,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:24:50,648 INFO L87 Difference]: Start difference. First operand 32 states and 50 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:50,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:50,789 INFO L93 Difference]: Finished difference Result 29 states and 45 transitions. [2022-11-16 12:24:50,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:24:50,789 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-16 12:24:50,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:50,791 INFO L225 Difference]: With dead ends: 29 [2022-11-16 12:24:50,792 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 12:24:50,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:24:50,793 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:50,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:24:50,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 12:24:50,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-16 12:24:50,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.8) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:50,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 45 transitions. [2022-11-16 12:24:50,796 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 45 transitions. Word has length 12 [2022-11-16 12:24:50,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:50,797 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 45 transitions. [2022-11-16 12:24:50,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:50,797 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 45 transitions. [2022-11-16 12:24:50,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:24:50,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:50,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:50,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:51,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:51,011 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:51,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:51,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1969536686, now seen corresponding path program 1 times [2022-11-16 12:24:51,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:51,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964256316] [2022-11-16 12:24:51,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:24:51,012 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:51,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:51,013 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:51,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-16 12:24:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:24:51,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:24:51,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:51,219 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-16 12:24:51,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-16 12:24:51,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:24:51,332 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-16 12:24:51,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:24:51,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:24:51,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:24:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:51,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:24:51,516 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_338 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_338) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv1 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8)))) is different from false [2022-11-16 12:24:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-16 12:24:51,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:51,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964256316] [2022-11-16 12:24:51,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964256316] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:24:51,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:24:51,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-16 12:24:51,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043408039] [2022-11-16 12:24:51,721 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:24:51,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:24:51,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:51,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:24:51,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=80, Unknown=7, NotChecked=18, Total=132 [2022-11-16 12:24:51,722 INFO L87 Difference]: Start difference. First operand 29 states and 45 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:51,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:51,980 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2022-11-16 12:24:51,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:24:51,981 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 12:24:51,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:51,982 INFO L225 Difference]: With dead ends: 29 [2022-11-16 12:24:51,982 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 12:24:51,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=133, Unknown=7, NotChecked=24, Total=210 [2022-11-16 12:24:51,983 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:51,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 63 Unchecked, 0.1s Time] [2022-11-16 12:24:51,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 12:24:51,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-16 12:24:51,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.72) internal successors, (43), 28 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:51,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2022-11-16 12:24:51,985 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 13 [2022-11-16 12:24:51,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:51,985 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2022-11-16 12:24:51,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:51,985 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2022-11-16 12:24:51,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:24:51,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:51,986 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:52,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:52,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:52,187 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:52,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:52,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1763017929, now seen corresponding path program 2 times [2022-11-16 12:24:52,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:52,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938550685] [2022-11-16 12:24:52,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:24:52,188 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:52,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:52,189 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:52,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-16 12:24:52,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:24:52,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:24:52,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:24:52,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:52,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:52,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:52,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:52,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-16 12:24:52,348 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:24:52,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:24:52,478 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:24:52,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:24:52,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:52,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938550685] [2022-11-16 12:24:52,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938550685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:24:52,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:24:52,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:24:52,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866713306] [2022-11-16 12:24:52,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:24:52,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:24:52,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:52,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:24:52,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:24:52,481 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:52,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:52,578 INFO L93 Difference]: Finished difference Result 27 states and 40 transitions. [2022-11-16 12:24:52,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:24:52,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 12:24:52,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:52,579 INFO L225 Difference]: With dead ends: 27 [2022-11-16 12:24:52,579 INFO L226 Difference]: Without dead ends: 27 [2022-11-16 12:24:52,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:24:52,580 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:52,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:24:52,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-16 12:24:52,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-16 12:24:52,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 40 transitions. [2022-11-16 12:24:52,583 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 40 transitions. Word has length 13 [2022-11-16 12:24:52,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:52,583 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 40 transitions. [2022-11-16 12:24:52,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:52,583 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 40 transitions. [2022-11-16 12:24:52,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:24:52,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:52,584 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:52,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-16 12:24:52,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:52,791 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:52,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:52,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1763017987, now seen corresponding path program 3 times [2022-11-16 12:24:52,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:52,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093568746] [2022-11-16 12:24:52,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:24:52,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:52,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:52,793 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:52,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-16 12:24:52,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 12:24:52,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:24:52,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 12:24:52,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:52,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:52,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:52,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:52,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-16 12:24:53,005 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-16 12:24:53,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-16 12:24:53,092 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:24:53,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:24:53,119 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-16 12:24:53,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:24:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:53,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:24:54,134 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:54,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:54,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093568746] [2022-11-16 12:24:54,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093568746] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:24:54,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:24:54,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2022-11-16 12:24:54,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774899743] [2022-11-16 12:24:54,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:24:54,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:24:54,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:54,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:24:54,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:24:54,138 INFO L87 Difference]: Start difference. First operand 27 states and 40 transitions. Second operand has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:55,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:55,412 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2022-11-16 12:24:55,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:24:55,414 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 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 13 [2022-11-16 12:24:55,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:55,414 INFO L225 Difference]: With dead ends: 60 [2022-11-16 12:24:55,414 INFO L226 Difference]: Without dead ends: 60 [2022-11-16 12:24:55,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:24:55,416 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 197 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:55,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 0 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 146 Invalid, 0 Unknown, 64 Unchecked, 0.6s Time] [2022-11-16 12:24:55,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-16 12:24:55,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 35. [2022-11-16 12:24:55,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.875) internal successors, (60), 34 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:55,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 60 transitions. [2022-11-16 12:24:55,418 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 60 transitions. Word has length 13 [2022-11-16 12:24:55,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:55,419 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 60 transitions. [2022-11-16 12:24:55,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:55,419 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 60 transitions. [2022-11-16 12:24:55,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:24:55,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:55,420 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:55,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-16 12:24:55,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:55,623 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:55,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:55,623 INFO L85 PathProgramCache]: Analyzing trace with hash 925748236, now seen corresponding path program 2 times [2022-11-16 12:24:55,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:55,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57574645] [2022-11-16 12:24:55,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:24:55,624 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:55,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:55,625 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:55,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-16 12:24:55,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:24:55,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:24:55,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:24:55,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:55,946 INFO L321 Elim1Store]: treesize reduction 118, result has 24.4 percent of original size [2022-11-16 12:24:55,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 65 [2022-11-16 12:24:55,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:24:56,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:56,190 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-16 12:24:56,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 27 [2022-11-16 12:24:56,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-11-16 12:24:56,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:24:57,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:24:57,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:24:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:57,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:24:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:58,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:24:58,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57574645] [2022-11-16 12:24:58,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57574645] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:24:58,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:24:58,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 12:24:58,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755301222] [2022-11-16 12:24:58,523 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:24:58,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:24:58,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:24:58,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:24:58,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=147, Unknown=1, NotChecked=0, Total=182 [2022-11-16 12:24:58,524 INFO L87 Difference]: Start difference. First operand 35 states and 60 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:58,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:24:58,580 INFO L93 Difference]: Finished difference Result 46 states and 75 transitions. [2022-11-16 12:24:58,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:24:58,580 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 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 14 [2022-11-16 12:24:58,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:24:58,581 INFO L225 Difference]: With dead ends: 46 [2022-11-16 12:24:58,581 INFO L226 Difference]: Without dead ends: 46 [2022-11-16 12:24:58,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=34, Invalid=147, Unknown=1, NotChecked=0, Total=182 [2022-11-16 12:24:58,582 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:24:58,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2022-11-16 12:24:58,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-16 12:24:58,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-16 12:24:58,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 1.744186046511628) internal successors, (75), 45 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 75 transitions. [2022-11-16 12:24:58,585 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 75 transitions. Word has length 14 [2022-11-16 12:24:58,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:24:58,585 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 75 transitions. [2022-11-16 12:24:58,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:24:58,586 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 75 transitions. [2022-11-16 12:24:58,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:24:58,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:24:58,587 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:24:58,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-16 12:24:58,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:58,793 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:24:58,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:24:58,793 INFO L85 PathProgramCache]: Analyzing trace with hash 64495122, now seen corresponding path program 3 times [2022-11-16 12:24:58,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:24:58,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590077102] [2022-11-16 12:24:58,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:24:58,794 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:24:58,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:24:58,795 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:24:58,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-16 12:24:58,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:24:58,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:24:58,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:24:58,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:24:59,086 INFO L321 Elim1Store]: treesize reduction 118, result has 24.4 percent of original size [2022-11-16 12:24:59,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 65 [2022-11-16 12:24:59,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:24:59,260 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 [2022-11-16 12:24:59,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:24:59,314 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-16 12:24:59,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 27 [2022-11-16 12:24:59,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:00,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:00,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:00,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:00,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:25:01,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:01,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:25:01,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590077102] [2022-11-16 12:25:01,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590077102] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:25:01,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:25:01,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 12:25:01,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114506894] [2022-11-16 12:25:01,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:25:01,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:25:01,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:25:01,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:25:01,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=147, Unknown=1, NotChecked=0, Total=182 [2022-11-16 12:25:01,281 INFO L87 Difference]: Start difference. First operand 46 states and 75 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:01,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:01,338 INFO L93 Difference]: Finished difference Result 49 states and 78 transitions. [2022-11-16 12:25:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:25:01,339 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 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 14 [2022-11-16 12:25:01,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:01,339 INFO L225 Difference]: With dead ends: 49 [2022-11-16 12:25:01,339 INFO L226 Difference]: Without dead ends: 49 [2022-11-16 12:25:01,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=147, Unknown=1, NotChecked=0, Total=182 [2022-11-16 12:25:01,340 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:01,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 50 Unchecked, 0.1s Time] [2022-11-16 12:25:01,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-16 12:25:01,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2022-11-16 12:25:01,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 1.744186046511628) internal successors, (75), 45 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:01,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 75 transitions. [2022-11-16 12:25:01,342 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 75 transitions. Word has length 14 [2022-11-16 12:25:01,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:01,342 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 75 transitions. [2022-11-16 12:25:01,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:01,343 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 75 transitions. [2022-11-16 12:25:01,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:25:01,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:01,343 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:01,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-16 12:25:01,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:01,552 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:25:01,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:01,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1145014692, now seen corresponding path program 4 times [2022-11-16 12:25:01,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:25:01,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584652207] [2022-11-16 12:25:01,553 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:25:01,553 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:01,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:25:01,555 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:25:01,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-16 12:25:01,724 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:25:01,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:25:01,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:25:01,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:25:01,796 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-16 12:25:01,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-16 12:25:01,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:01,895 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-16 12:25:01,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:25:01,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:02,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:02,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:02,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:02,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:25:02,144 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_467 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_467) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv1 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8)))) is different from false [2022-11-16 12:25:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-16 12:25:02,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:25:02,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584652207] [2022-11-16 12:25:02,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584652207] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:25:02,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:25:02,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 12:25:02,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574808134] [2022-11-16 12:25:02,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:25:02,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:25:02,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:25:02,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:25:02,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=119, Unknown=9, NotChecked=22, Total=182 [2022-11-16 12:25:02,476 INFO L87 Difference]: Start difference. First operand 46 states and 75 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:02,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:02,864 INFO L93 Difference]: Finished difference Result 46 states and 73 transitions. [2022-11-16 12:25:02,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:25:02,865 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 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 14 [2022-11-16 12:25:02,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:02,865 INFO L225 Difference]: With dead ends: 46 [2022-11-16 12:25:02,865 INFO L226 Difference]: Without dead ends: 46 [2022-11-16 12:25:02,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=180, Unknown=9, NotChecked=28, Total=272 [2022-11-16 12:25:02,866 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:02,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 69 Unchecked, 0.2s Time] [2022-11-16 12:25:02,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-16 12:25:02,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 35. [2022-11-16 12:25:02,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.8125) internal successors, (58), 34 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:02,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 58 transitions. [2022-11-16 12:25:02,869 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 58 transitions. Word has length 14 [2022-11-16 12:25:02,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:02,870 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 58 transitions. [2022-11-16 12:25:02,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:02,870 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 58 transitions. [2022-11-16 12:25:02,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 12:25:02,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:02,871 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:02,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-16 12:25:03,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:03,085 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:25:03,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:03,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1366922642, now seen corresponding path program 5 times [2022-11-16 12:25:03,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:25:03,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360200396] [2022-11-16 12:25:03,086 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:25:03,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:03,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:25:03,087 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:25:03,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-16 12:25:03,311 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-16 12:25:03,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:25:03,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 12:25:03,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:25:03,383 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-16 12:25:03,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-16 12:25:03,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:03,502 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-16 12:25:03,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:25:03,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:03,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:03,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:03,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:03,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:03,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:25:06,172 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_~v~0.base_96 (_ BitVec 32))) (or (not (= (select |c_#valid| v_~v~0.base_96) (_ bv0 1))) (forall ((v_ArrVal_493 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_496 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_493) v_~v~0.base_96 v_ArrVal_496) (_ bv3 32)) (_ bv3 32))) (_ bv0 8)))))) is different from false [2022-11-16 12:25:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:06,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:25:06,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360200396] [2022-11-16 12:25:06,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360200396] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:25:06,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:25:06,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-16 12:25:06,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414864463] [2022-11-16 12:25:06,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:25:06,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:25:06,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:25:06,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:25:06,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=156, Unknown=21, NotChecked=26, Total=240 [2022-11-16 12:25:06,192 INFO L87 Difference]: Start difference. First operand 35 states and 58 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:06,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:06,771 INFO L93 Difference]: Finished difference Result 40 states and 63 transitions. [2022-11-16 12:25:06,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:25:06,772 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 12:25:06,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:06,772 INFO L225 Difference]: With dead ends: 40 [2022-11-16 12:25:06,772 INFO L226 Difference]: Without dead ends: 40 [2022-11-16 12:25:06,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=81, Invalid=316, Unknown=27, NotChecked=38, Total=462 [2022-11-16 12:25:06,773 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:06,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 68 Invalid, 0 Unknown, 105 Unchecked, 0.2s Time] [2022-11-16 12:25:06,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-16 12:25:06,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2022-11-16 12:25:06,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 1.7142857142857142) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:06,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2022-11-16 12:25:06,777 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 15 [2022-11-16 12:25:06,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:06,777 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2022-11-16 12:25:06,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:06,778 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2022-11-16 12:25:06,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 12:25:06,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:06,779 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:06,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-16 12:25:06,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:06,994 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:25:06,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:06,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1135370198, now seen corresponding path program 6 times [2022-11-16 12:25:06,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:25:06,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453188868] [2022-11-16 12:25:06,995 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 12:25:06,995 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:06,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:25:06,996 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:25:06,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-16 12:25:07,216 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-16 12:25:07,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:25:07,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-16 12:25:07,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:25:07,343 INFO L321 Elim1Store]: treesize reduction 118, result has 24.4 percent of original size [2022-11-16 12:25:07,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 65 [2022-11-16 12:25:07,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:07,524 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 [2022-11-16 12:25:07,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:07,583 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-16 12:25:07,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 27 [2022-11-16 12:25:07,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:08,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:08,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:09,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:09,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:25:10,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:10,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:25:10,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453188868] [2022-11-16 12:25:10,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453188868] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:25:10,104 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:25:10,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-16 12:25:10,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418959067] [2022-11-16 12:25:10,104 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:25:10,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:25:10,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:25:10,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:25:10,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=199, Unknown=2, NotChecked=0, Total=240 [2022-11-16 12:25:10,106 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:10,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:10,171 INFO L93 Difference]: Finished difference Result 49 states and 76 transitions. [2022-11-16 12:25:10,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:25:10,172 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 12:25:10,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:10,173 INFO L225 Difference]: With dead ends: 49 [2022-11-16 12:25:10,173 INFO L226 Difference]: Without dead ends: 49 [2022-11-16 12:25:10,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=39, Invalid=199, Unknown=2, NotChecked=0, Total=240 [2022-11-16 12:25:10,174 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:10,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 62 Unchecked, 0.1s Time] [2022-11-16 12:25:10,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-16 12:25:10,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2022-11-16 12:25:10,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 41 states have (on average 1.6829268292682926) internal successors, (69), 43 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:10,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 69 transitions. [2022-11-16 12:25:10,177 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 69 transitions. Word has length 15 [2022-11-16 12:25:10,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:10,177 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 69 transitions. [2022-11-16 12:25:10,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:10,177 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 69 transitions. [2022-11-16 12:25:10,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 12:25:10,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:10,178 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:10,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-16 12:25:10,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:10,378 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:25:10,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:10,379 INFO L85 PathProgramCache]: Analyzing trace with hash -2079077528, now seen corresponding path program 7 times [2022-11-16 12:25:10,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:25:10,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816745301] [2022-11-16 12:25:10,379 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 12:25:10,379 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:10,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:25:10,380 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:25:10,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-16 12:25:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:10,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 12:25:10,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:25:10,682 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-16 12:25:10,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-16 12:25:10,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:10,804 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-16 12:25:10,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:25:10,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:10,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:11,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:11,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:11,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:11,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:25:11,158 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_555 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_555) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv1 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8)))) is different from false [2022-11-16 12:25:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-16 12:25:13,649 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:25:13,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816745301] [2022-11-16 12:25:13,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816745301] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:25:13,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:25:13,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-16 12:25:13,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660469198] [2022-11-16 12:25:13,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:25:13,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:25:13,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:25:13,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:25:13,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=163, Unknown=14, NotChecked=26, Total=240 [2022-11-16 12:25:13,652 INFO L87 Difference]: Start difference. First operand 44 states and 69 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:14,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:14,175 INFO L93 Difference]: Finished difference Result 49 states and 74 transitions. [2022-11-16 12:25:14,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:25:14,176 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 12:25:14,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:14,177 INFO L225 Difference]: With dead ends: 49 [2022-11-16 12:25:14,177 INFO L226 Difference]: Without dead ends: 49 [2022-11-16 12:25:14,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=68, Invalid=262, Unknown=16, NotChecked=34, Total=380 [2022-11-16 12:25:14,178 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:14,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 88 Unchecked, 0.2s Time] [2022-11-16 12:25:14,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-16 12:25:14,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2022-11-16 12:25:14,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 41 states have (on average 1.6829268292682926) internal successors, (69), 43 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:14,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 69 transitions. [2022-11-16 12:25:14,185 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 69 transitions. Word has length 15 [2022-11-16 12:25:14,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:14,185 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 69 transitions. [2022-11-16 12:25:14,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:14,186 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 69 transitions. [2022-11-16 12:25:14,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 12:25:14,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:14,188 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:14,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-11-16 12:25:14,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:14,399 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:25:14,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:14,399 INFO L85 PathProgramCache]: Analyzing trace with hash -766728324, now seen corresponding path program 8 times [2022-11-16 12:25:14,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:25:14,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867658008] [2022-11-16 12:25:14,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:25:14,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:14,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:25:14,401 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:25:14,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-16 12:25:14,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:25:14,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:25:14,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-16 12:25:14,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:25:14,729 INFO L321 Elim1Store]: treesize reduction 118, result has 24.4 percent of original size [2022-11-16 12:25:14,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 65 [2022-11-16 12:25:14,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:14,866 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 [2022-11-16 12:25:14,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:14,920 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-16 12:25:14,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 27 [2022-11-16 12:25:15,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:15,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:16,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:16,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:16,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:16,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:25:19,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:19,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:25:19,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867658008] [2022-11-16 12:25:19,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867658008] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:25:19,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:25:19,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-16 12:25:19,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565937134] [2022-11-16 12:25:19,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:25:19,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:25:19,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:25:19,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:25:19,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=196, Unknown=5, NotChecked=0, Total=240 [2022-11-16 12:25:19,412 INFO L87 Difference]: Start difference. First operand 44 states and 69 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:19,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:19,497 INFO L93 Difference]: Finished difference Result 48 states and 74 transitions. [2022-11-16 12:25:19,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:25:19,498 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 12:25:19,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:19,499 INFO L225 Difference]: With dead ends: 48 [2022-11-16 12:25:19,499 INFO L226 Difference]: Without dead ends: 48 [2022-11-16 12:25:19,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=39, Invalid=196, Unknown=5, NotChecked=0, Total=240 [2022-11-16 12:25:19,500 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:19,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 103 Unchecked, 0.1s Time] [2022-11-16 12:25:19,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-16 12:25:19,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 35. [2022-11-16 12:25:19,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.75) internal successors, (56), 34 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:19,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2022-11-16 12:25:19,503 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 15 [2022-11-16 12:25:19,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:19,503 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2022-11-16 12:25:19,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:19,504 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2022-11-16 12:25:19,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:25:19,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:19,504 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:19,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-16 12:25:19,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:19,711 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:25:19,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:19,711 INFO L85 PathProgramCache]: Analyzing trace with hash 574724172, now seen corresponding path program 9 times [2022-11-16 12:25:19,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:25:19,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548573139] [2022-11-16 12:25:19,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:25:19,712 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:19,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:25:19,713 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:25:19,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-16 12:25:19,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 12:25:19,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:25:19,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 12:25:19,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:25:20,065 INFO L321 Elim1Store]: treesize reduction 118, result has 24.4 percent of original size [2022-11-16 12:25:20,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 65 [2022-11-16 12:25:20,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:20,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:20,284 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-16 12:25:20,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 27 [2022-11-16 12:25:20,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-11-16 12:25:20,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:21,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:21,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:21,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:21,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:22,075 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:22,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:25:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:23,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:25:23,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548573139] [2022-11-16 12:25:23,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548573139] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:25:23,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:25:23,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-16 12:25:23,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508183103] [2022-11-16 12:25:23,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:25:23,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:25:23,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:25:23,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:25:23,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=253, Unknown=8, NotChecked=0, Total=306 [2022-11-16 12:25:23,576 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:23,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:23,665 INFO L93 Difference]: Finished difference Result 60 states and 98 transitions. [2022-11-16 12:25:23,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:25:23,666 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 12:25:23,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:23,667 INFO L225 Difference]: With dead ends: 60 [2022-11-16 12:25:23,667 INFO L226 Difference]: Without dead ends: 60 [2022-11-16 12:25:23,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=45, Invalid=253, Unknown=8, NotChecked=0, Total=306 [2022-11-16 12:25:23,668 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:23,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 64 Unchecked, 0.1s Time] [2022-11-16 12:25:23,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-16 12:25:23,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2022-11-16 12:25:23,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 57 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:23,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 97 transitions. [2022-11-16 12:25:23,675 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 97 transitions. Word has length 16 [2022-11-16 12:25:23,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:23,676 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 97 transitions. [2022-11-16 12:25:23,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:23,676 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 97 transitions. [2022-11-16 12:25:23,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:25:23,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:23,677 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:23,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-16 12:25:23,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:23,887 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:25:23,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:23,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1839169746, now seen corresponding path program 10 times [2022-11-16 12:25:23,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:25:23,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332843321] [2022-11-16 12:25:23,888 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:25:23,888 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:23,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:25:23,890 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:25:23,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-16 12:25:24,091 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:25:24,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:25:24,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 12:25:24,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:25:24,147 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-16 12:25:24,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-16 12:25:24,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:24,275 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-16 12:25:24,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:25:24,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:24,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:24,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:24,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:24,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:24,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:24,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:25:24,928 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_650 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_650) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv4 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8)))) is different from false [2022-11-16 12:25:25,234 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-11-16 12:25:25,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:25:25,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332843321] [2022-11-16 12:25:25,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332843321] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:25:25,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:25:25,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-16 12:25:25,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212944657] [2022-11-16 12:25:25,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:25:25,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:25:25,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:25:25,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:25:25,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=213, Unknown=21, NotChecked=30, Total=306 [2022-11-16 12:25:25,236 INFO L87 Difference]: Start difference. First operand 58 states and 97 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:25,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:25,799 INFO L93 Difference]: Finished difference Result 58 states and 95 transitions. [2022-11-16 12:25:25,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:25:25,800 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 12:25:25,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:25,800 INFO L225 Difference]: With dead ends: 58 [2022-11-16 12:25:25,801 INFO L226 Difference]: Without dead ends: 58 [2022-11-16 12:25:25,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=89, Invalid=398, Unknown=23, NotChecked=42, Total=552 [2022-11-16 12:25:25,802 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:25,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 136 Invalid, 0 Unknown, 137 Unchecked, 0.3s Time] [2022-11-16 12:25:25,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-16 12:25:25,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-16 12:25:25,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 55 states have (on average 1.7272727272727273) internal successors, (95), 57 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:25,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 95 transitions. [2022-11-16 12:25:25,805 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 95 transitions. Word has length 16 [2022-11-16 12:25:25,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:25,805 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 95 transitions. [2022-11-16 12:25:25,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:25,806 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 95 transitions. [2022-11-16 12:25:25,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:25:25,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:25,806 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:25,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-16 12:25:26,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:26,015 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:25:26,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:26,015 INFO L85 PathProgramCache]: Analyzing trace with hash 636233262, now seen corresponding path program 11 times [2022-11-16 12:25:26,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:25:26,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11419858] [2022-11-16 12:25:26,016 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:25:26,016 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:26,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:25:26,022 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:25:26,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-16 12:25:26,251 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-16 12:25:26,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:25:26,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-16 12:25:26,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:25:26,351 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-16 12:25:26,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-16 12:25:26,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-16 12:25:26,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:26,517 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 12:25:26,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-16 12:25:26,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:26,566 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:25:26,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2022-11-16 12:25:26,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:28,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:28,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:29,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:29,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:29,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:29,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:25:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:29,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:25:30,725 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:30,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:25:30,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11419858] [2022-11-16 12:25:30,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11419858] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:25:30,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:25:30,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-16 12:25:30,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90230484] [2022-11-16 12:25:30,726 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:25:30,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:25:30,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:25:30,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:25:30,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=326, Unknown=6, NotChecked=0, Total=380 [2022-11-16 12:25:30,728 INFO L87 Difference]: Start difference. First operand 58 states and 95 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:30,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:30,778 INFO L93 Difference]: Finished difference Result 58 states and 93 transitions. [2022-11-16 12:25:30,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:25:30,779 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 12:25:30,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:30,780 INFO L225 Difference]: With dead ends: 58 [2022-11-16 12:25:30,780 INFO L226 Difference]: Without dead ends: 58 [2022-11-16 12:25:30,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=48, Invalid=326, Unknown=6, NotChecked=0, Total=380 [2022-11-16 12:25:30,781 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:30,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 69 Unchecked, 0.0s Time] [2022-11-16 12:25:30,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-16 12:25:30,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-16 12:25:30,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 55 states have (on average 1.690909090909091) internal successors, (93), 57 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:30,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 93 transitions. [2022-11-16 12:25:30,783 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 93 transitions. Word has length 17 [2022-11-16 12:25:30,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:30,783 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 93 transitions. [2022-11-16 12:25:30,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:30,784 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 93 transitions. [2022-11-16 12:25:30,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:25:30,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:30,784 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:30,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-16 12:25:30,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:30,993 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:25:30,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:30,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1179340392, now seen corresponding path program 12 times [2022-11-16 12:25:30,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:25:30,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867571344] [2022-11-16 12:25:30,994 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 12:25:30,994 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:30,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:25:30,995 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:25:31,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-16 12:25:31,245 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-16 12:25:31,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:25:31,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 12:25:31,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:25:31,305 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-16 12:25:31,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-16 12:25:31,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:31,407 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-16 12:25:31,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:25:31,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:25:31,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:31,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:31,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:31,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:31,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:31,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:31,934 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:31,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:25:32,483 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base|))) (or (forall ((v_ArrVal_724 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_724) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv3 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8)))) (not (bvult (bvadd (_ bv2 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse0)) (not (bvult (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| (_ bv3 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse0)))) is different from false [2022-11-16 12:25:32,522 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base|))) (or (forall ((v_ArrVal_724 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_724) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv4 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8)))) (not (bvult (bvadd (_ bv4 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse0)) (not (bvult (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| (_ bv3 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse0)))) is different from false [2022-11-16 12:25:35,305 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 2 times theorem prover too weak. 0 trivial. 9 not checked. [2022-11-16 12:25:35,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:25:35,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867571344] [2022-11-16 12:25:35,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867571344] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:25:35,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:25:35,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-16 12:25:35,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384279609] [2022-11-16 12:25:35,306 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:25:35,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:25:35,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:25:35,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:25:35,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=255, Unknown=9, NotChecked=66, Total=380 [2022-11-16 12:25:35,308 INFO L87 Difference]: Start difference. First operand 58 states and 93 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:37,092 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#length| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base|))) (let ((.cse0 (not (bvult (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| (_ bv1 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse1)))) (and (or (forall ((v_ArrVal_724 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_724) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv1 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8)))) .cse0 (not (bvult (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse1))) (or .cse0 (not (bvult (bvadd (_ bv2 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|) .cse1)) (forall ((v_ArrVal_724 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_724) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv2 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8)))))))) is different from false [2022-11-16 12:25:37,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:37,690 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2022-11-16 12:25:37,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:25:37,691 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 12:25:37,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:37,691 INFO L225 Difference]: With dead ends: 67 [2022-11-16 12:25:37,692 INFO L226 Difference]: Without dead ends: 67 [2022-11-16 12:25:37,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=122, Invalid=623, Unknown=23, NotChecked=162, Total=930 [2022-11-16 12:25:37,692 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 223 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:37,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 160 Invalid, 0 Unknown, 223 Unchecked, 0.3s Time] [2022-11-16 12:25:37,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-16 12:25:37,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 44. [2022-11-16 12:25:37,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 43 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:37,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 73 transitions. [2022-11-16 12:25:37,695 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 73 transitions. Word has length 17 [2022-11-16 12:25:37,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:37,695 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 73 transitions. [2022-11-16 12:25:37,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:37,696 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 73 transitions. [2022-11-16 12:25:37,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:25:37,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:37,696 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:37,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-16 12:25:37,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:37,909 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:25:37,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:37,909 INFO L85 PathProgramCache]: Analyzing trace with hash -591918595, now seen corresponding path program 4 times [2022-11-16 12:25:37,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:25:37,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570208125] [2022-11-16 12:25:37,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:25:37,910 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:25:37,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:25:37,911 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:25:37,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-16 12:25:38,116 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:25:38,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:25:38,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 12:25:38,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:25:38,178 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-16 12:25:38,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-16 12:25:38,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:38,274 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-16 12:25:38,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:25:38,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:38,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:38,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:38,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:38,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:38,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:38,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:38,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:25:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:38,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:25:38,946 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_763 (Array (_ BitVec 32) (_ BitVec 32)))) (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_763) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv3 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8))) is different from false [2022-11-16 12:25:38,958 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_763 (Array (_ BitVec 32) (_ BitVec 32)))) (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_763) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv4 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8))) is different from false [2022-11-16 12:25:38,970 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_763 (Array (_ BitVec 32) (_ BitVec 32)))) (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_763) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv5 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8))) is different from false [2022-11-16 12:25:38,981 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_763 (Array (_ BitVec 32) (_ BitVec 32)))) (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_763) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv6 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8))) is different from false [2022-11-16 12:25:59,452 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 22 not checked. [2022-11-16 12:25:59,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:25:59,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570208125] [2022-11-16 12:25:59,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570208125] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:25:59,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:25:59,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-11-16 12:25:59,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037808306] [2022-11-16 12:25:59,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:25:59,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:25:59,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:25:59,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:25:59,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=286, Unknown=56, NotChecked=156, Total=552 [2022-11-16 12:25:59,456 INFO L87 Difference]: Start difference. First operand 44 states and 73 transitions. Second operand has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:02,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:26:02,601 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2022-11-16 12:26:02,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:26:02,602 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 12:26:02,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:26:02,602 INFO L225 Difference]: With dead ends: 40 [2022-11-16 12:26:02,602 INFO L226 Difference]: Without dead ends: 40 [2022-11-16 12:26:02,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=105, Invalid=548, Unknown=65, NotChecked=212, Total=930 [2022-11-16 12:26:02,603 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 255 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:26:02,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 261 Invalid, 0 Unknown, 255 Unchecked, 0.4s Time] [2022-11-16 12:26:02,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-16 12:26:02,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2022-11-16 12:26:02,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 30 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:02,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2022-11-16 12:26:02,605 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 17 [2022-11-16 12:26:02,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:26:02,605 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2022-11-16 12:26:02,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.375) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:02,606 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2022-11-16 12:26:02,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 12:26:02,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:26:02,606 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:26:02,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-11-16 12:26:02,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:26:02,807 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:26:02,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:02,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1751952244, now seen corresponding path program 13 times [2022-11-16 12:26:02,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:26:02,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896070725] [2022-11-16 12:26:02,808 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 12:26:02,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:26:02,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:26:02,809 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:26:02,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-16 12:26:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:26:03,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 12:26:03,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:03,089 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-16 12:26:03,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-16 12:26:03,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:26:03,197 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-16 12:26:03,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:26:03,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:26:03,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:26:03,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:26:03,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:26:03,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:26:03,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:26:03,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:26:03,617 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:03,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:26:03,670 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_801 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_801) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (bvadd |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| (_ bv1 32) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset14#1|))) (_ bv0 8)))) is different from false [2022-11-16 12:26:04,513 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-11-16 12:26:04,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:26:04,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896070725] [2022-11-16 12:26:04,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896070725] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:26:04,514 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:26:04,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-16 12:26:04,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031032435] [2022-11-16 12:26:04,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:26:04,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 12:26:04,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:26:04,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 12:26:04,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=44, NotChecked=38, Total=462 [2022-11-16 12:26:04,518 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:04,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:26:04,921 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2022-11-16 12:26:04,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:26:04,922 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-16 12:26:04,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:26:04,922 INFO L225 Difference]: With dead ends: 38 [2022-11-16 12:26:04,922 INFO L226 Difference]: Without dead ends: 38 [2022-11-16 12:26:04,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=364, Unknown=44, NotChecked=40, Total=506 [2022-11-16 12:26:04,923 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 206 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:26:04,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 206 Unchecked, 0.3s Time] [2022-11-16 12:26:04,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-16 12:26:04,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-16 12:26:04,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:04,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2022-11-16 12:26:04,925 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 18 [2022-11-16 12:26:04,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:26:04,925 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2022-11-16 12:26:04,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:04,925 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2022-11-16 12:26:04,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 12:26:04,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:26:04,926 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:26:04,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-16 12:26:05,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:26:05,126 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:26:05,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:05,127 INFO L85 PathProgramCache]: Analyzing trace with hash -2095500398, now seen corresponding path program 14 times [2022-11-16 12:26:05,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:26:05,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680974432] [2022-11-16 12:26:05,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:26:05,127 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:26:05,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:26:05,128 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:26:05,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-16 12:26:05,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:26:05,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:26:05,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-16 12:26:05,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:26:05,449 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-16 12:26:05,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 45 [2022-11-16 12:26:05,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:26:05,561 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-16 12:26:05,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:26:05,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:26:05,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:26:05,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:26:05,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:26:05,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:26:05,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:26:06,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:26:06,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-11-16 12:26:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:06,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:26:09,742 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 11 refuted. 10 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:26:09,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:26:09,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680974432] [2022-11-16 12:26:09,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680974432] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:26:09,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:26:09,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-16 12:26:09,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211041710] [2022-11-16 12:26:09,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:26:09,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 12:26:09,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:26:09,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 12:26:09,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=376, Unknown=17, NotChecked=0, Total=462 [2022-11-16 12:26:09,744 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:11,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:26:11,178 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2022-11-16 12:26:11,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:26:11,179 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-16 12:26:11,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:26:11,179 INFO L225 Difference]: With dead ends: 42 [2022-11-16 12:26:11,179 INFO L226 Difference]: Without dead ends: 42 [2022-11-16 12:26:11,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=160, Invalid=749, Unknown=21, NotChecked=0, Total=930 [2022-11-16 12:26:11,180 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:26:11,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 154 Invalid, 0 Unknown, 94 Unchecked, 0.3s Time] [2022-11-16 12:26:11,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-16 12:26:11,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2022-11-16 12:26:11,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:11,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2022-11-16 12:26:11,182 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 18 [2022-11-16 12:26:11,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:26:11,183 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2022-11-16 12:26:11,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:11,183 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2022-11-16 12:26:11,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 12:26:11,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:26:11,183 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:26:11,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-16 12:26:11,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:26:11,384 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE, thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-11-16 12:26:11,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:26:11,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1523708398, now seen corresponding path program 15 times [2022-11-16 12:26:11,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:26:11,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868662128] [2022-11-16 12:26:11,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:26:11,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:26:11,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:26:11,385 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:26:11,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-16 12:26:11,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 12:26:11,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-16 12:26:11,684 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:26:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:26:11,932 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-16 12:26:11,932 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:26:11,934 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (25 of 26 remaining) [2022-11-16 12:26:11,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (24 of 26 remaining) [2022-11-16 12:26:11,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (23 of 26 remaining) [2022-11-16 12:26:11,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (22 of 26 remaining) [2022-11-16 12:26:11,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (21 of 26 remaining) [2022-11-16 12:26:11,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 26 remaining) [2022-11-16 12:26:11,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 26 remaining) [2022-11-16 12:26:11,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 26 remaining) [2022-11-16 12:26:11,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 26 remaining) [2022-11-16 12:26:11,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 26 remaining) [2022-11-16 12:26:11,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 26 remaining) [2022-11-16 12:26:11,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 26 remaining) [2022-11-16 12:26:11,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 26 remaining) [2022-11-16 12:26:11,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 26 remaining) [2022-11-16 12:26:11,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 26 remaining) [2022-11-16 12:26:11,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 26 remaining) [2022-11-16 12:26:11,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 26 remaining) [2022-11-16 12:26:11,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (8 of 26 remaining) [2022-11-16 12:26:11,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 26 remaining) [2022-11-16 12:26:11,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 26 remaining) [2022-11-16 12:26:11,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE (5 of 26 remaining) [2022-11-16 12:26:11,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE (4 of 26 remaining) [2022-11-16 12:26:11,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONMEMORY_DEREFERENCE (3 of 26 remaining) [2022-11-16 12:26:11,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONMEMORY_DEREFERENCE (2 of 26 remaining) [2022-11-16 12:26:11,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 26 remaining) [2022-11-16 12:26:11,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 26 remaining) [2022-11-16 12:26:11,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-16 12:26:12,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:26:12,143 INFO L444 BasicCegarLoop]: Path program histogram: [15, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:26:12,147 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:26:12,147 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:26:12,160 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,161 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,161 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,161 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,161 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,162 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,162 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,162 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,162 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,163 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,163 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,163 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,164 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,164 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,164 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,164 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,165 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,165 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,165 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,165 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,166 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,166 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,166 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,166 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,167 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,167 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,167 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,168 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,168 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,168 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,168 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,169 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,169 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,169 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-16 12:26:12,169 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,170 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,170 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-16 12:26:12,170 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,170 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,171 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-16 12:26:12,171 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,171 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,171 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-16 12:26:12,172 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,172 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,172 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-16 12:26:12,172 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,173 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled [2022-11-16 12:26:12,173 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled [2022-11-16 12:26:12,173 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled [2022-11-16 12:26:12,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:26:12 BasicIcfg [2022-11-16 12:26:12,198 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:26:12,198 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:26:12,198 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:26:12,199 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:26:12,199 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:24:16" (3/4) ... [2022-11-16 12:26:12,202 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 12:26:12,204 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:26:12,204 INFO L158 Benchmark]: Toolchain (without parser) took 117958.66ms. Allocated memory was 58.7MB in the beginning and 123.7MB in the end (delta: 65.0MB). Free memory was 35.4MB in the beginning and 55.3MB in the end (delta: -19.9MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. [2022-11-16 12:26:12,205 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 58.7MB. Free memory is still 40.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:26:12,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 958.97ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 35.2MB in the beginning and 51.2MB in the end (delta: -16.0MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2022-11-16 12:26:12,205 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.55ms. Allocated memory is still 77.6MB. Free memory was 51.2MB in the beginning and 48.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:26:12,205 INFO L158 Benchmark]: Boogie Preprocessor took 40.38ms. Allocated memory is still 77.6MB. Free memory was 48.6MB in the beginning and 46.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:26:12,206 INFO L158 Benchmark]: RCFGBuilder took 861.95ms. Allocated memory is still 77.6MB. Free memory was 46.5MB in the beginning and 49.3MB in the end (delta: -2.8MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2022-11-16 12:26:12,206 INFO L158 Benchmark]: TraceAbstraction took 116021.93ms. Allocated memory was 77.6MB in the beginning and 123.7MB in the end (delta: 46.1MB). Free memory was 48.4MB in the beginning and 55.3MB in the end (delta: -6.9MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2022-11-16 12:26:12,212 INFO L158 Benchmark]: Witness Printer took 5.71ms. Allocated memory is still 123.7MB. Free memory is still 55.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:26:12,213 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 58.7MB. Free memory is still 40.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 958.97ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 35.2MB in the beginning and 51.2MB in the end (delta: -16.0MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.55ms. Allocated memory is still 77.6MB. Free memory was 51.2MB in the beginning and 48.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.38ms. Allocated memory is still 77.6MB. Free memory was 48.6MB in the beginning and 46.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 861.95ms. Allocated memory is still 77.6MB. Free memory was 46.5MB in the beginning and 49.3MB in the end (delta: -2.8MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * TraceAbstraction took 116021.93ms. Allocated memory was 77.6MB in the beginning and 123.7MB in the end (delta: 46.1MB). Free memory was 48.4MB in the beginning and 55.3MB in the end (delta: -6.9MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. * Witness Printer took 5.71ms. Allocated memory is still 123.7MB. Free memory is still 55.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_dest#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_strcpy_src#1 : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.3s, 122 PlacesBefore, 39 PlacesAfterwards, 120 TransitionsBefore, 34 TransitionsAfterwards, 360 CoEnabledTransitionPairs, 6 FixpointIterations, 80 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 10 ConcurrentYvCompositions, 3 ChoiceCompositions, 139 TotalNumberOfCompositions, 464 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 402, independent: 387, independent conditional: 0, independent unconditional: 387, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 243, independent: 232, independent conditional: 0, independent unconditional: 232, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 243, independent: 231, independent conditional: 0, independent unconditional: 231, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 159, independent: 19, independent conditional: 0, independent unconditional: 19, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 402, independent: 155, independent conditional: 0, independent unconditional: 155, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 243, unknown conditional: 0, unknown unconditional: 243] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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 - UnprovableResult [Line: 1119]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1107. Possible FailurePath: [L1108] 0 char *v; [L1121] 0 pthread_t t1, t2; [L1122] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, pthread_create(&t1, 0, thread1, 0)=0, t1={10:0}, t2={17:0}, v={0:0}] [L1123] 0 \read(t1) VAL [\read(t1)=0, arg={0:0}, t1={10:0}, t2={17:0}, v={0:0}] [L1111] 1 v = malloc(sizeof(char) * 8) [L1112] 1 return 0; [L1123] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=0, \result={0:0}, arg={0:0}, arg={0:0}, t1={10:0}, t2={17:0}, v={5:0}] [L1124] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, pthread_create(&t2, 0, thread2, 0)=1, t1={10:0}, t2={17:0}, v={5:0}] [L1125] 0 \read(t2) VAL [\read(t2)=1, \result={0:0}, arg={0:0}, arg={0:0}, t1={10:0}, t2={17:0}, v={5:0}] [L1116] COND TRUE 2 \read(*v) [L1116] FCALL 2 strcpy(v, "Bigshot") [L1117] 2 return 0; [L1125] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=1, \result={0:0}, arg={0:0}, arg={0:0}, t1={10:0}, t2={17:0}, v={5:0}] [L1126] EXPR 0 !v || v[0] == 'B' [L1126] EXPR 0 v[0] [L1126] EXPR 0 !v || v[0] == 'B' [L1126] CALL 0 __VERIFIER_assert(!v || v[0] == 'B') [L1107] COND FALSE 0 !(!expression) [L1126] RET 0 __VERIFIER_assert(!v || v[0] == 'B') [L1127] 0 return 0; [L1127] 0 return 0; [L1127] 0 return 0; - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1107]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1124]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1122]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 153 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 115.8s, OverallIterations: 40, TraceHistogramMax: 8, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 14.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 16.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 682 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 682 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2125 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 99 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2264 IncrementalHoareTripleChecker+Invalid, 4488 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 99 mSolverCounterUnsat, 3 mSDtfsCounter, 2264 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 773 GetRequests, 373 SyntacticMatches, 2 SemanticMatches, 398 ConstructedPredicates, 13 IntricatePredicates, 2 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 60.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=33, InterpolantAutomatonStates: 289, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 39 MinimizatonAttempts, 276 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 69.3s InterpolantComputationTime, 468 NumberOfCodeBlocks, 464 NumberOfCodeBlocksAsserted, 64 NumberOfCheckSat, 688 ConstructedInterpolants, 371 QuantifiedInterpolants, 15498 SizeOfPredicates, 229 NumberOfNonLiveVariables, 4392 ConjunctsInSsa, 697 ConjunctsInUnsatCore, 60 InterpolantComputations, 18 PerfectInterpolantSequences, 26/364 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-16 12:26:12,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8e0bfb-6bdf-4d1f-9d3f-3c2aba26c810/bin/uautomizer-tPACEb0tL8/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: UNKNOWN: Overapproximated counterexample