./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 60035180ad93ee19bf4d992ab5c22fc9a9b898dcfe886a7e5b520105473a6903 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:56:27,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:56:28,042 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-24 23:56:28,055 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:56:28,056 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:56:28,111 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:56:28,112 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:56:28,113 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:56:28,114 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:56:28,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:56:28,119 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:56:28,121 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:56:28,121 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:56:28,123 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:56:28,123 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:56:28,124 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:56:28,124 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:56:28,124 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:56:28,125 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:56:28,125 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:56:28,126 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:56:28,126 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:56:28,128 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:56:28,128 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:56:28,128 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:56:28,129 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:56:28,129 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:56:28,130 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:56:28,130 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:56:28,130 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:56:28,132 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:56:28,132 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:56:28,132 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:56:28,133 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:56:28,133 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:56:28,133 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:56:28,133 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:56:28,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:56:28,134 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:56:28,134 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:56:28,162 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:56:28,163 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:56:28,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:56:28,163 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:56:28,164 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:56:28,164 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:56:28,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:56:28,164 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60035180ad93ee19bf4d992ab5c22fc9a9b898dcfe886a7e5b520105473a6903 [2023-11-24 23:56:28,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:56:28,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:56:28,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:56:28,480 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:56:28,481 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:56:28,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2023-11-24 23:56:31,524 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:56:31,772 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:56:31,774 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2023-11-24 23:56:31,783 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/data/926b42d9a/4e870e0e0859418c88b496ce79bd0e8c/FLAGb00a57370 [2023-11-24 23:56:31,826 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/data/926b42d9a/4e870e0e0859418c88b496ce79bd0e8c [2023-11-24 23:56:31,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:56:31,833 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:56:31,841 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:56:31,841 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:56:31,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:56:31,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:56:31" (1/1) ... [2023-11-24 23:56:31,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29201884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:31, skipping insertion in model container [2023-11-24 23:56:31,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:56:31" (1/1) ... [2023-11-24 23:56:31,886 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:56:32,067 WARN L240 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_7f0ae33a-315d-4d1b-846a-42eb80732e7b/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1215,1228] [2023-11-24 23:56:32,078 WARN L240 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_7f0ae33a-315d-4d1b-846a-42eb80732e7b/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1969,1982] [2023-11-24 23:56:32,082 WARN L240 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_7f0ae33a-315d-4d1b-846a-42eb80732e7b/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[2490,2503] [2023-11-24 23:56:32,087 WARN L240 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_7f0ae33a-315d-4d1b-846a-42eb80732e7b/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[3282,3295] [2023-11-24 23:56:32,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:56:32,102 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:56:32,121 WARN L240 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_7f0ae33a-315d-4d1b-846a-42eb80732e7b/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1215,1228] [2023-11-24 23:56:32,127 WARN L240 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_7f0ae33a-315d-4d1b-846a-42eb80732e7b/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1969,1982] [2023-11-24 23:56:32,130 WARN L240 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_7f0ae33a-315d-4d1b-846a-42eb80732e7b/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[2490,2503] [2023-11-24 23:56:32,135 WARN L240 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_7f0ae33a-315d-4d1b-846a-42eb80732e7b/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[3282,3295] [2023-11-24 23:56:32,137 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:56:32,153 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:56:32,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:32 WrapperNode [2023-11-24 23:56:32,154 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:56:32,155 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:56:32,155 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:56:32,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:56:32,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:32" (1/1) ... [2023-11-24 23:56:32,172 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:32" (1/1) ... [2023-11-24 23:56:32,201 INFO L138 Inliner]: procedures = 15, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 169 [2023-11-24 23:56:32,201 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:56:32,202 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:56:32,202 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:56:32,202 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:56:32,211 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:32" (1/1) ... [2023-11-24 23:56:32,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:32" (1/1) ... [2023-11-24 23:56:32,214 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:32" (1/1) ... [2023-11-24 23:56:32,214 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:32" (1/1) ... [2023-11-24 23:56:32,223 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:32" (1/1) ... [2023-11-24 23:56:32,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:32" (1/1) ... [2023-11-24 23:56:32,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:32" (1/1) ... [2023-11-24 23:56:32,230 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:32" (1/1) ... [2023-11-24 23:56:32,234 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:56:32,235 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:56:32,235 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:56:32,235 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:56:32,236 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:32" (1/1) ... [2023-11-24 23:56:32,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:56:32,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:32,281 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:56:32,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:56:32,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:56:32,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:56:32,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:56:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:56:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:56:32,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:56:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:56:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:56:32,425 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:56:32,428 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:56:32,843 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:56:32,872 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:56:32,872 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:56:32,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:56:32 BoogieIcfgContainer [2023-11-24 23:56:32,874 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:56:32,876 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:56:32,877 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:56:32,880 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:56:32,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:56:31" (1/3) ... [2023-11-24 23:56:32,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466e4521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:56:32, skipping insertion in model container [2023-11-24 23:56:32,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:56:32" (2/3) ... [2023-11-24 23:56:32,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466e4521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:56:32, skipping insertion in model container [2023-11-24 23:56:32,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:56:32" (3/3) ... [2023-11-24 23:56:32,883 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+lhb-reducer.c [2023-11-24 23:56:32,903 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:56:32,903 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-24 23:56:32,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:56:32,970 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@6c330121, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:56:32,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-24 23:56:32,976 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 35 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) [2023-11-24 23:56:32,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:56:32,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:32,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:32,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-24 23:56:32,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:32,991 INFO L85 PathProgramCache]: Analyzing trace with hash -408731259, now seen corresponding path program 1 times [2023-11-24 23:56:33,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:33,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486015027] [2023-11-24 23:56:33,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:33,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:33,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:33,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486015027] [2023-11-24 23:56:33,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486015027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:33,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:33,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:56:33,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682968085] [2023-11-24 23:56:33,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:33,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:33,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:33,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:33,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:33,391 INFO L87 Difference]: Start difference. First operand has 36 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 35 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) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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) [2023-11-24 23:56:33,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:33,429 INFO L93 Difference]: Finished difference Result 71 states and 105 transitions. [2023-11-24 23:56:33,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:33,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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 [2023-11-24 23:56:33,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:33,441 INFO L225 Difference]: With dead ends: 71 [2023-11-24 23:56:33,441 INFO L226 Difference]: Without dead ends: 34 [2023-11-24 23:56:33,444 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 [2023-11-24 23:56:33,448 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:33,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:56:33,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-24 23:56:33,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-11-24 23:56:33,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 33 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) [2023-11-24 23:56:33,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2023-11-24 23:56:33,479 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 9 [2023-11-24 23:56:33,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:33,479 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2023-11-24 23:56:33,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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) [2023-11-24 23:56:33,480 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2023-11-24 23:56:33,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:56:33,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:33,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:33,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:56:33,481 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-24 23:56:33,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:33,482 INFO L85 PathProgramCache]: Analyzing trace with hash 21333476, now seen corresponding path program 1 times [2023-11-24 23:56:33,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:33,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522432518] [2023-11-24 23:56:33,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:33,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:33,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:33,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:33,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522432518] [2023-11-24 23:56:33,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522432518] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:56:33,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997517831] [2023-11-24 23:56:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:33,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:33,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:33,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:33,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:56:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:33,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:56:33,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:33,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:33,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:33,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:33,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997517831] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-24 23:56:33,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:56:33,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2023-11-24 23:56:33,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476597928] [2023-11-24 23:56:33,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:33,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:56:33,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:33,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:56:33,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:56:33,939 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) [2023-11-24 23:56:33,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:33,967 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2023-11-24 23:56:33,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:33,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 [2023-11-24 23:56:33,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:33,969 INFO L225 Difference]: With dead ends: 41 [2023-11-24 23:56:33,969 INFO L226 Difference]: Without dead ends: 31 [2023-11-24 23:56:33,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-24 23:56:33,972 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:33,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 66 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:56:33,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-24 23:56:33,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2023-11-24 23:56:33,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 28 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) [2023-11-24 23:56:33,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2023-11-24 23:56:33,980 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 10 [2023-11-24 23:56:33,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:33,980 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2023-11-24 23:56:33,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) [2023-11-24 23:56:33,981 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2023-11-24 23:56:33,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:56:33,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:33,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:33,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-24 23:56:34,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:34,188 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-24 23:56:34,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:34,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1576729806, now seen corresponding path program 1 times [2023-11-24 23:56:34,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:34,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104453889] [2023-11-24 23:56:34,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:34,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:34,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:56:34,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:34,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104453889] [2023-11-24 23:56:34,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104453889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:34,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:34,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:56:34,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597644235] [2023-11-24 23:56:34,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:34,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:34,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:34,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:34,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:34,275 INFO L87 Difference]: Start difference. First operand 29 states and 35 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) [2023-11-24 23:56:34,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:34,315 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2023-11-24 23:56:34,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:34,316 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 [2023-11-24 23:56:34,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:34,317 INFO L225 Difference]: With dead ends: 57 [2023-11-24 23:56:34,317 INFO L226 Difference]: Without dead ends: 36 [2023-11-24 23:56:34,318 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 [2023-11-24 23:56:34,320 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 16 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:34,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 36 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:56:34,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-24 23:56:34,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2023-11-24 23:56:34,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 28 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) [2023-11-24 23:56:34,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-11-24 23:56:34,327 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 11 [2023-11-24 23:56:34,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:34,328 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-11-24 23:56:34,328 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) [2023-11-24 23:56:34,328 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-11-24 23:56:34,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:56:34,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:34,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:34,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:56:34,330 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-24 23:56:34,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:34,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1646172627, now seen corresponding path program 1 times [2023-11-24 23:56:34,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:34,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221316274] [2023-11-24 23:56:34,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:34,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:34,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:56:34,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:34,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221316274] [2023-11-24 23:56:34,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221316274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:34,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:34,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:56:34,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684121800] [2023-11-24 23:56:34,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:34,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:56:34,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:34,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:56:34,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:56:34,463 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:34,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:34,512 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2023-11-24 23:56:34,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:56:34,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-24 23:56:34,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:34,514 INFO L225 Difference]: With dead ends: 50 [2023-11-24 23:56:34,514 INFO L226 Difference]: Without dead ends: 48 [2023-11-24 23:56:34,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:56:34,516 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 23 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:34,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 79 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:56:34,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-24 23:56:34,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2023-11-24 23:56:34,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 30 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) [2023-11-24 23:56:34,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2023-11-24 23:56:34,524 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 11 [2023-11-24 23:56:34,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:34,524 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2023-11-24 23:56:34,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:34,525 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2023-11-24 23:56:34,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:56:34,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:34,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:34,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:56:34,527 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-24 23:56:34,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:34,527 INFO L85 PathProgramCache]: Analyzing trace with hash 571171830, now seen corresponding path program 1 times [2023-11-24 23:56:34,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:34,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502076477] [2023-11-24 23:56:34,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:34,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:34,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:56:34,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:34,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502076477] [2023-11-24 23:56:34,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502076477] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:34,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:34,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:56:34,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102124331] [2023-11-24 23:56:34,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:34,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:56:34,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:34,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:56:34,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:56:34,573 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:34,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:34,611 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2023-11-24 23:56:34,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:56:34,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-24 23:56:34,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:34,613 INFO L225 Difference]: With dead ends: 53 [2023-11-24 23:56:34,613 INFO L226 Difference]: Without dead ends: 32 [2023-11-24 23:56:34,613 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 [2023-11-24 23:56:34,615 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:34,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 33 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:56:34,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-24 23:56:34,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2023-11-24 23:56:34,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.25) internal successors, (30), 25 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) [2023-11-24 23:56:34,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2023-11-24 23:56:34,621 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 12 [2023-11-24 23:56:34,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:34,621 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2023-11-24 23:56:34,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:34,622 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2023-11-24 23:56:34,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 23:56:34,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:34,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:34,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:56:34,639 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-24 23:56:34,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:34,640 INFO L85 PathProgramCache]: Analyzing trace with hash -233924787, now seen corresponding path program 1 times [2023-11-24 23:56:34,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:34,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947583749] [2023-11-24 23:56:34,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:34,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:34,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:34,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:34,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947583749] [2023-11-24 23:56:34,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947583749] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:56:34,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210388995] [2023-11-24 23:56:34,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:34,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:34,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:34,895 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:34,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:56:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:35,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:56:35,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:35,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:35,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:56:35,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210388995] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:56:35,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1132679472] [2023-11-24 23:56:35,103 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-11-24 23:56:35,104 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:56:35,108 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:56:35,114 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:56:35,114 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:56:36,206 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:56:37,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1132679472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:37,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:56:37,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [3, 3, 3] total 18 [2023-11-24 23:56:37,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051323901] [2023-11-24 23:56:37,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:37,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 23:56:37,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:37,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 23:56:37,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:56:37,622 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 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) [2023-11-24 23:56:37,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:37,892 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2023-11-24 23:56:37,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 23:56:37,893 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 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 17 [2023-11-24 23:56:37,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:37,893 INFO L225 Difference]: With dead ends: 55 [2023-11-24 23:56:37,893 INFO L226 Difference]: Without dead ends: 39 [2023-11-24 23:56:37,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:56:37,895 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:37,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 62 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:56:37,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-24 23:56:37,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2023-11-24 23:56:37,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.21875) internal successors, (39), 33 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) [2023-11-24 23:56:37,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2023-11-24 23:56:37,901 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 17 [2023-11-24 23:56:37,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:37,901 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2023-11-24 23:56:37,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 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) [2023-11-24 23:56:37,902 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2023-11-24 23:56:37,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-24 23:56:37,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:37,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:37,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:38,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:38,115 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-24 23:56:38,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:38,115 INFO L85 PathProgramCache]: Analyzing trace with hash 657815077, now seen corresponding path program 1 times [2023-11-24 23:56:38,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:38,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091071260] [2023-11-24 23:56:38,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:38,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:38,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:56:38,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:38,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091071260] [2023-11-24 23:56:38,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091071260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:38,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:56:38,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 23:56:38,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50755845] [2023-11-24 23:56:38,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:38,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:56:38,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:38,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:56:38,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:56:38,241 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:38,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:38,319 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2023-11-24 23:56:38,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:56:38,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-24 23:56:38,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:38,323 INFO L225 Difference]: With dead ends: 53 [2023-11-24 23:56:38,323 INFO L226 Difference]: Without dead ends: 51 [2023-11-24 23:56:38,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-24 23:56:38,325 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 63 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:38,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 116 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:56:38,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-24 23:56:38,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 36. [2023-11-24 23:56:38,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 35 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) [2023-11-24 23:56:38,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2023-11-24 23:56:38,333 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 18 [2023-11-24 23:56:38,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:38,334 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2023-11-24 23:56:38,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:38,334 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2023-11-24 23:56:38,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 23:56:38,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:38,335 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:38,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 23:56:38,335 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-24 23:56:38,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:38,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1882512481, now seen corresponding path program 1 times [2023-11-24 23:56:38,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:38,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602089101] [2023-11-24 23:56:38,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:38,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:38,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:56:38,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:38,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602089101] [2023-11-24 23:56:38,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602089101] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:56:38,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505724693] [2023-11-24 23:56:38,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:38,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:38,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:38,470 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:38,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:56:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:38,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:56:38,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:38,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:56:38,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:38,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:56:38,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505724693] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:56:38,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1062633302] [2023-11-24 23:56:38,694 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-24 23:56:38,699 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:56:38,699 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:56:38,700 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:56:38,700 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:56:40,086 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:56:42,092 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '997#(and (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| 0) (= |ULTIMATE.start_main_~__tmp_3~0#1| 0) (= |ULTIMATE.start_main_~__tmp_1~0#1| 1) (= ~__tmp_155_0~0 1) (= |ULTIMATE.start_main_~main__loop_entered~0#1| 1) (or (and (not (= (mod (select (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|) (+ (- 17179869184) |ULTIMATE.start_main_~#main__array~0#1.offset| (* (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) 4))) 4294967296) (mod (select (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|) (+ (- 17179869184) |ULTIMATE.start_main_~#main__array~0#1.offset| (* (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296) 4))) 4294967296))) (<= 2147483648 (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296))) (and (or (and (<= 2147483648 (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296)) (not (= (mod (select (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|) (+ (- 17179869184) |ULTIMATE.start_main_~#main__array~0#1.offset| (* (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) 4))) 4294967296) (mod (select (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|) (+ |ULTIMATE.start_main_~#main__array~0#1.offset| (* (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296) 4))) 4294967296)))) (and (not (= (mod (select (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|) (+ |ULTIMATE.start_main_~#main__array~0#1.offset| (* (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296) 4))) 4294967296) (mod (select (select |#memory_int| |ULTIMATE.start_main_~#main__array~0#1.base|) (+ |ULTIMATE.start_main_~#main__array~0#1.offset| (* (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) 4))) 4294967296))) (<= (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296) 2147483647))) (<= (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296) 2147483647))) (= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 1) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 1) (<= (+ (mod |ULTIMATE.start_main_~main__index2~0#1| 4294967296) 1) (mod |ULTIMATE.start_main_~main__index1~0#1| 4294967296)))' at error location [2023-11-24 23:56:42,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:56:42,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:56:42,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 8 [2023-11-24 23:56:42,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565556412] [2023-11-24 23:56:42,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:56:42,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:56:42,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:42,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:56:42,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2023-11-24 23:56:42,097 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2023-11-24 23:56:42,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:42,223 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2023-11-24 23:56:42,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:56:42,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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 20 [2023-11-24 23:56:42,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:42,226 INFO L225 Difference]: With dead ends: 71 [2023-11-24 23:56:42,226 INFO L226 Difference]: Without dead ends: 33 [2023-11-24 23:56:42,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2023-11-24 23:56:42,227 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 44 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:42,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 34 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:56:42,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-24 23:56:42,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-24 23:56:42,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 32 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) [2023-11-24 23:56:42,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2023-11-24 23:56:42,233 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 20 [2023-11-24 23:56:42,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:42,233 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2023-11-24 23:56:42,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2023-11-24 23:56:42,233 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2023-11-24 23:56:42,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-24 23:56:42,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:42,235 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:42,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:42,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:42,436 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-24 23:56:42,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:42,436 INFO L85 PathProgramCache]: Analyzing trace with hash -899412945, now seen corresponding path program 1 times [2023-11-24 23:56:42,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:42,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174710592] [2023-11-24 23:56:42,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:42,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:42,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:56:42,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:42,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174710592] [2023-11-24 23:56:42,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174710592] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:56:42,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031502157] [2023-11-24 23:56:42,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:42,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:42,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:42,575 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:42,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:56:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:42,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:56:42,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:56:42,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:56:42,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:56:42,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031502157] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:56:42,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1220972429] [2023-11-24 23:56:42,728 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-11-24 23:56:42,728 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:56:42,729 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:56:42,729 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:56:42,729 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:56:45,321 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:56:55,079 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1277#(and (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| 0) (= |ULTIMATE.start_main_~__tmp_3~0#1| 0) (= |ULTIMATE.start_main_~main__loop_entered~0#1| 1))' at error location [2023-11-24 23:56:55,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:56:55,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:56:55,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-24 23:56:55,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611690539] [2023-11-24 23:56:55,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:56:55,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 23:56:55,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:55,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 23:56:55,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2023-11-24 23:56:55,082 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:55,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:55,176 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2023-11-24 23:56:55,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:56:55,177 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-24 23:56:55,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:55,177 INFO L225 Difference]: With dead ends: 66 [2023-11-24 23:56:55,177 INFO L226 Difference]: Without dead ends: 37 [2023-11-24 23:56:55,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2023-11-24 23:56:55,179 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:55,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:56:55,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-24 23:56:55,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-11-24 23:56:55,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 36 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) [2023-11-24 23:56:55,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2023-11-24 23:56:55,185 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 25 [2023-11-24 23:56:55,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:55,185 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2023-11-24 23:56:55,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:55,185 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2023-11-24 23:56:55,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-24 23:56:55,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:56:55,187 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:55,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:55,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:55,404 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-24 23:56:55,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:56:55,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1766468591, now seen corresponding path program 2 times [2023-11-24 23:56:55,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:56:55,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354179685] [2023-11-24 23:56:55,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:56:55,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:56:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:56:55,640 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:56:55,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:56:55,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354179685] [2023-11-24 23:56:55,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354179685] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:56:55,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142961451] [2023-11-24 23:56:55,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:56:55,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:56:55,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:56:55,644 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:56:55,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:56:56,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-24 23:56:56,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:56:56,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-24 23:56:56,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:56:57,198 INFO L349 Elim1Store]: treesize reduction 132, result has 5.0 percent of original size [2023-11-24 23:56:57,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 334 treesize of output 153 [2023-11-24 23:56:57,403 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-24 23:56:57,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:56:57,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142961451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:56:57,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:56:57,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 19 [2023-11-24 23:56:57,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200751919] [2023-11-24 23:56:57,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:56:57,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:56:57,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:56:57,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:56:57,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:56:57,406 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 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) [2023-11-24 23:56:58,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:56:58,511 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2023-11-24 23:56:58,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 23:56:58,512 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 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 29 [2023-11-24 23:56:58,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:56:58,512 INFO L225 Difference]: With dead ends: 51 [2023-11-24 23:56:58,512 INFO L226 Difference]: Without dead ends: 0 [2023-11-24 23:56:58,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2023-11-24 23:56:58,514 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 13 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:56:58,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 22 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:56:58,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-24 23:56:58,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-24 23:56:58,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:56:58,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-24 23:56:58,515 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2023-11-24 23:56:58,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:56:58,516 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-24 23:56:58,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 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) [2023-11-24 23:56:58,516 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-24 23:56:58,516 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-24 23:56:58,519 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-24 23:56:58,519 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-24 23:56:58,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-11-24 23:56:58,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-24 23:56:58,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:56:58,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-24 23:56:58,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-24 23:56:58,801 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 77) no Hoare annotation was computed. [2023-11-24 23:56:58,801 INFO L899 garLoopResultBuilder]: For program point L118(lines 30 189) no Hoare annotation was computed. [2023-11-24 23:56:58,801 INFO L899 garLoopResultBuilder]: For program point L52(lines 50 143) no Hoare annotation was computed. [2023-11-24 23:56:58,801 INFO L899 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2023-11-24 23:56:58,801 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 143) no Hoare annotation was computed. [2023-11-24 23:56:58,801 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 14 200) no Hoare annotation was computed. [2023-11-24 23:56:58,801 INFO L899 garLoopResultBuilder]: For program point $Ultimate##32(lines 104 131) no Hoare annotation was computed. [2023-11-24 23:56:58,802 INFO L899 garLoopResultBuilder]: For program point L69(lines 66 92) no Hoare annotation was computed. [2023-11-24 23:56:58,802 INFO L899 garLoopResultBuilder]: For program point L160(lines 160 188) no Hoare annotation was computed. [2023-11-24 23:56:58,802 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 137) no Hoare annotation was computed. [2023-11-24 23:56:58,802 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 194) no Hoare annotation was computed. [2023-11-24 23:56:58,802 INFO L895 garLoopResultBuilder]: At program point L20-3(lines 20 23) the Hoare annotation is: (and (<= 2 |ULTIMATE.start_main_~#main__array~0#1.base|) (= |ULTIMATE.start_main_~main__loop_entered~0#1| 0) (<= 1 |#StackHeapBarrier|) (= ~__tmp_155_0~0 0) (= ~__return_136~0 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= ~__return_main~0 0) (= |ULTIMATE.start_main_~#main__array~0#1.offset| 0)) [2023-11-24 23:56:58,802 INFO L899 garLoopResultBuilder]: For program point L111(lines 111 124) no Hoare annotation was computed. [2023-11-24 23:56:58,802 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 177) no Hoare annotation was computed. [2023-11-24 23:56:58,802 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 142) no Hoare annotation was computed. [2023-11-24 23:56:58,803 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 171) no Hoare annotation was computed. [2023-11-24 23:56:58,803 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-11-24 23:56:58,803 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-24 23:56:58,803 INFO L899 garLoopResultBuilder]: For program point L38(lines 35 151) no Hoare annotation was computed. [2023-11-24 23:56:58,803 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 183) no Hoare annotation was computed. [2023-11-24 23:56:58,803 INFO L899 garLoopResultBuilder]: For program point L129(lines 101 136) no Hoare annotation was computed. [2023-11-24 23:56:58,803 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 189) no Hoare annotation was computed. [2023-11-24 23:56:58,803 INFO L899 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2023-11-24 23:56:58,803 INFO L899 garLoopResultBuilder]: For program point L171(line 171) no Hoare annotation was computed. [2023-11-24 23:56:58,804 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 97) no Hoare annotation was computed. [2023-11-24 23:56:58,804 INFO L899 garLoopResultBuilder]: For program point L89(lines 64 97) no Hoare annotation was computed. [2023-11-24 23:56:58,804 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2023-11-24 23:56:58,804 INFO L899 garLoopResultBuilder]: For program point L148(lines 33 156) no Hoare annotation was computed. [2023-11-24 23:56:58,804 INFO L899 garLoopResultBuilder]: For program point L66(lines 66 92) no Hoare annotation was computed. [2023-11-24 23:56:58,804 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 156) no Hoare annotation was computed. [2023-11-24 23:56:58,804 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-24 23:56:58,804 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 199) no Hoare annotation was computed. [2023-11-24 23:56:58,804 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 84) no Hoare annotation was computed. [2023-11-24 23:56:58,805 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2023-11-24 23:56:58,805 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 136) no Hoare annotation was computed. [2023-11-24 23:56:58,805 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 151) no Hoare annotation was computed. [2023-11-24 23:56:58,808 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:56:58,810 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:56:58,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:56:58 BoogieIcfgContainer [2023-11-24 23:56:58,823 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:56:58,823 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:56:58,824 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:56:58,824 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:56:58,824 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:56:32" (3/4) ... [2023-11-24 23:56:58,827 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 23:56:58,838 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-24 23:56:58,838 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-24 23:56:58,839 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-24 23:56:58,839 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-24 23:56:58,964 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/witness.graphml [2023-11-24 23:56:58,964 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/witness.yml [2023-11-24 23:56:58,964 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:56:58,966 INFO L158 Benchmark]: Toolchain (without parser) took 27132.77ms. Allocated memory was 178.3MB in the beginning and 310.4MB in the end (delta: 132.1MB). Free memory was 147.4MB in the beginning and 172.7MB in the end (delta: -25.4MB). Peak memory consumption was 106.7MB. Max. memory is 16.1GB. [2023-11-24 23:56:58,966 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory was 97.8MB in the beginning and 97.7MB in the end (delta: 72.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:56:58,967 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.28ms. Allocated memory is still 178.3MB. Free memory was 147.1MB in the beginning and 138.0MB in the end (delta: 9.2MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2023-11-24 23:56:58,968 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.16ms. Allocated memory is still 178.3MB. Free memory was 138.0MB in the beginning and 135.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:56:58,968 INFO L158 Benchmark]: Boogie Preprocessor took 31.87ms. Allocated memory is still 178.3MB. Free memory was 135.9MB in the beginning and 134.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:56:58,969 INFO L158 Benchmark]: RCFGBuilder took 639.33ms. Allocated memory is still 178.3MB. Free memory was 134.5MB in the beginning and 136.3MB in the end (delta: -1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-24 23:56:58,975 INFO L158 Benchmark]: TraceAbstraction took 25946.52ms. Allocated memory was 178.3MB in the beginning and 310.4MB in the end (delta: 132.1MB). Free memory was 135.5MB in the beginning and 178.0MB in the end (delta: -42.4MB). Peak memory consumption was 92.3MB. Max. memory is 16.1GB. [2023-11-24 23:56:58,976 INFO L158 Benchmark]: Witness Printer took 141.86ms. Allocated memory is still 310.4MB. Free memory was 178.0MB in the beginning and 172.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 23:56:58,980 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 125.8MB. Free memory was 97.8MB in the beginning and 97.7MB in the end (delta: 72.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.28ms. Allocated memory is still 178.3MB. Free memory was 147.1MB in the beginning and 138.0MB in the end (delta: 9.2MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.16ms. Allocated memory is still 178.3MB. Free memory was 138.0MB in the beginning and 135.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.87ms. Allocated memory is still 178.3MB. Free memory was 135.9MB in the beginning and 134.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 639.33ms. Allocated memory is still 178.3MB. Free memory was 134.5MB in the beginning and 136.3MB in the end (delta: -1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 25946.52ms. Allocated memory was 178.3MB in the beginning and 310.4MB in the end (delta: 132.1MB). Free memory was 135.5MB in the beginning and 178.0MB in the end (delta: -42.4MB). Peak memory consumption was 92.3MB. Max. memory is 16.1GB. * Witness Printer took 141.86ms. Allocated memory is still 310.4MB. Free memory was 178.0MB in the beginning and 172.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 46]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 77]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 113]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 171]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 25.9s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 186 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 186 mSDsluCounter, 682 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 439 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 447 IncrementalHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 243 mSDtfsCounter, 447 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 284 GetRequests, 172 SyntacticMatches, 4 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 14.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=9, InterpolantAutomatonStates: 69, 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, 10 MinimizatonAttempts, 52 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 7 NumberOfFragments, 25 HoareAnnotationTreeSize, 1 FomulaSimplifications, 52 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 180 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 263 NumberOfCodeBlocks, 259 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 316 ConstructedInterpolants, 0 QuantifiedInterpolants, 1095 SizeOfPredicates, 10 NumberOfNonLiveVariables, 523 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 19 InterpolantComputations, 7 PerfectInterpolantSequences, 47/85 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: OVERALL_TIME: 1.1s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 16, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 18, TOOLS_POST_TIME: 0.9s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 18, TOOLS_QUANTIFIERELIM_TIME: 0.9s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 41, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 16, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.3s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.3s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 177, DAG_COMPRESSION_RETAINED_NODES: 40, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((((main__loop_entered == 0) && (__tmp_155_0 == 0)) && (__return_136 == 0)) && (0 <= i)) && (__return_main == 0)) RESULT: Ultimate proved your program to be correct! [2023-11-24 23:56:59,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f0ae33a-315d-4d1b-846a-42eb80732e7b/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE