./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_e8b3e3c6-4d2d-4656-8f60-6f9320b5ffb1/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3e3c6-4d2d-4656-8f60-6f9320b5ffb1/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3e3c6-4d2d-4656-8f60-6f9320b5ffb1/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3e3c6-4d2d-4656-8f60-6f9320b5ffb1/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3e3c6-4d2d-4656-8f60-6f9320b5ffb1/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3e3c6-4d2d-4656-8f60-6f9320b5ffb1/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:15:06,933 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:15:07,068 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3e3c6-4d2d-4656-8f60-6f9320b5ffb1/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 00:15:07,079 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:15:07,080 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:15:07,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:15:07,125 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:15:07,126 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:15:07,127 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:15:07,132 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:15:07,133 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:15:07,134 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:15:07,135 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:15:07,137 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:15:07,137 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:15:07,138 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:15:07,138 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:15:07,138 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:15:07,139 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:15:07,139 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:15:07,140 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:15:07,140 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:15:07,142 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:15:07,142 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:15:07,143 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:15:07,143 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:15:07,144 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:15:07,144 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:15:07,145 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:15:07,145 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:15:07,147 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:15:07,147 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:15:07,147 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:15:07,147 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:15:07,148 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:15:07,148 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:15:07,148 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:15:07,149 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:15:07,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:15:07,149 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:15:07,150 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:15:07,150 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:15:07,150 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:15:07,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:15:07,151 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:15:07,151 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:15:07,152 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:15:07,152 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_e8b3e3c6-4d2d-4656-8f60-6f9320b5ffb1/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3e3c6-4d2d-4656-8f60-6f9320b5ffb1/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 [2023-11-12 00:15:07,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:15:07,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:15:07,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:15:07,472 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:15:07,472 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:15:07,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3e3c6-4d2d-4656-8f60-6f9320b5ffb1/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2023-11-12 00:15:10,638 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:15:10,977 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:15:10,978 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3e3c6-4d2d-4656-8f60-6f9320b5ffb1/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2023-11-12 00:15:11,007 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3e3c6-4d2d-4656-8f60-6f9320b5ffb1/bin/utaipan-verify-NcY6lQBIFX/data/ba579bc02/1a61e2c35aa548e082c1ad3a234ca0ed/FLAG79edbbf25 [2023-11-12 00:15:11,022 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3e3c6-4d2d-4656-8f60-6f9320b5ffb1/bin/utaipan-verify-NcY6lQBIFX/data/ba579bc02/1a61e2c35aa548e082c1ad3a234ca0ed [2023-11-12 00:15:11,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:15:11,027 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:15:11,028 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:15:11,028 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:15:11,034 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:15:11,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:11,036 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22479d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11, skipping insertion in model container [2023-11-12 00:15:11,036 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:11,112 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:15:11,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:15:11,689 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:15:11,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:15:11,851 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:15:11,859 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:15:11,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11 WrapperNode [2023-11-12 00:15:11,859 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:15:11,861 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:15:11,861 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:15:11,861 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:15:11,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:11,940 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:12,047 INFO L138 Inliner]: procedures = 176, calls = 331, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1500 [2023-11-12 00:15:12,048 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:15:12,049 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:15:12,049 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:15:12,050 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:15:12,064 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:12,064 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:12,079 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:12,079 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:12,166 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:12,208 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:12,217 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:12,262 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:12,275 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:15:12,276 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:15:12,276 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:15:12,277 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:15:12,278 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (1/1) ... [2023-11-12 00:15:12,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:15:12,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3e3c6-4d2d-4656-8f60-6f9320b5ffb1/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:15:12,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3e3c6-4d2d-4656-8f60-6f9320b5ffb1/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:15:12,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3e3c6-4d2d-4656-8f60-6f9320b5ffb1/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:15:12,389 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-12 00:15:12,390 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-12 00:15:12,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:15:12,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:15:12,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:15:12,391 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:15:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:15:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:15:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:15:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:15:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-12 00:15:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:15:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:15:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:15:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:15:12,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:15:12,679 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:15:12,682 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:15:14,565 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:15:16,569 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:15:16,569 INFO L302 CfgBuilder]: Removed 72 assume(true) statements. [2023-11-12 00:15:16,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:15:16 BoogieIcfgContainer [2023-11-12 00:15:16,574 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:15:16,578 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:15:16,579 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:15:16,582 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:15:16,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:15:11" (1/3) ... [2023-11-12 00:15:16,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b0c842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:15:16, skipping insertion in model container [2023-11-12 00:15:16,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:15:11" (2/3) ... [2023-11-12 00:15:16,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b0c842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:15:16, skipping insertion in model container [2023-11-12 00:15:16,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:15:16" (3/3) ... [2023-11-12 00:15:16,587 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test7-2.i [2023-11-12 00:15:16,607 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:15:16,607 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-12 00:15:16,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:15:16,671 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;@70e2c1a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:15:16,672 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-12 00:15:16,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 144 states, 130 states have (on average 1.7461538461538462) internal successors, (227), 137 states have internal predecessors, (227), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-12 00:15:16,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:15:16,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:16,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 00:15:16,684 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-12 00:15:16,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:16,691 INFO L85 PathProgramCache]: Analyzing trace with hash 49765326, now seen corresponding path program 1 times [2023-11-12 00:15:16,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:15:16,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816278864] [2023-11-12 00:15:16,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:16,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:15:16,893 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:15:16,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945048130] [2023-11-12 00:15:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:16,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:15:16,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3e3c6-4d2d-4656-8f60-6f9320b5ffb1/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:15:16,898 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3e3c6-4d2d-4656-8f60-6f9320b5ffb1/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:15:16,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3e3c6-4d2d-4656-8f60-6f9320b5ffb1/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:15:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:17,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-12 00:15:17,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:15:17,237 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-12 00:15:17,263 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 00:15:17,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:15:17,333 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-12 00:15:17,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:15:17,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:15:17,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:15:17,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816278864] [2023-11-12 00:15:17,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:15:17,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945048130] [2023-11-12 00:15:17,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945048130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:17,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:15:17,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:15:17,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678072395] [2023-11-12 00:15:17,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:17,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:15:17,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:15:17,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:15:17,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:15:17,391 INFO L87 Difference]: Start difference. First operand has 144 states, 130 states have (on average 1.7461538461538462) internal successors, (227), 137 states have internal predecessors, (227), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:15:19,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:21,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:23,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:25,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:27,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:29,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:31,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:33,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:36,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:38,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:40,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:42,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:44,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:46,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:48,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:50,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:52,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:54,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:56,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:58,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:15:59,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:59,594 INFO L93 Difference]: Finished difference Result 348 states and 589 transitions. [2023-11-12 00:15:59,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:15:59,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-12 00:15:59,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:59,611 INFO L225 Difference]: With dead ends: 348 [2023-11-12 00:15:59,611 INFO L226 Difference]: Without dead ends: 177 [2023-11-12 00:15:59,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:15:59,618 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 67 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:59,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 334 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 20 Unknown, 0 Unchecked, 42.1s Time] [2023-11-12 00:15:59,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-12 00:15:59,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 125. [2023-11-12 00:15:59,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 115 states have (on average 1.2) internal successors, (138), 120 states have internal predecessors, (138), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 00:15:59,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 144 transitions. [2023-11-12 00:15:59,704 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 144 transitions. Word has length 4 [2023-11-12 00:15:59,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:59,704 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 144 transitions. [2023-11-12 00:15:59,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:15:59,705 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 144 transitions. [2023-11-12 00:15:59,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-12 00:15:59,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:59,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:15:59,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3e3c6-4d2d-4656-8f60-6f9320b5ffb1/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 00:15:59,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8b3e3c6-4d2d-4656-8f60-6f9320b5ffb1/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 00:15:59,917 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-12 00:15:59,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:59,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1843383089, now seen corresponding path program 1 times [2023-11-12 00:15:59,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:15:59,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115804223] [2023-11-12 00:15:59,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:59,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:16:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:16:00,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:16:00,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:16:00,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115804223] [2023-11-12 00:16:00,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115804223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:16:00,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:16:00,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:16:00,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630648269] [2023-11-12 00:16:00,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:16:00,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:16:00,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:16:00,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:16:00,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:16:00,679 INFO L87 Difference]: Start difference. First operand 125 states and 144 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:16:02,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:16:04,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:16:06,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:16:08,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:16:10,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-12 00:16:12,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 00:16:15,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []