./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-sets/test_add-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_add-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --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 b0bf6ee66b233cfe70507a3d8d55aa219725b8ce14e12bc2fdcf83f18b236eff --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:59:28,068 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:59:28,218 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-06 20:59:28,226 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:59:28,227 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:59:28,261 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:59:28,265 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:59:28,266 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:59:28,268 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:59:28,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:59:28,277 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:59:28,279 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:59:28,280 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:59:28,283 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:59:28,283 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:59:28,284 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:59:28,284 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:59:28,285 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:59:28,286 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:59:28,286 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:59:28,287 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:59:28,288 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:59:28,289 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:59:28,290 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 20:59:28,291 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:59:28,291 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:59:28,292 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:59:28,293 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:59:28,293 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 20:59:28,294 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:59:28,295 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 20:59:28,296 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:59:28,296 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 20:59:28,297 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:59:28,297 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:59:28,297 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:59:28,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:59:28,298 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:59:28,299 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:59:28,299 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 20:59:28,299 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:59:28,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:59:28,300 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 20:59:28,301 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:59:28,301 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:59:28,302 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_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0bf6ee66b233cfe70507a3d8d55aa219725b8ce14e12bc2fdcf83f18b236eff [2023-11-06 20:59:28,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:59:28,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:59:28,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:59:28,756 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:59:28,757 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:59:28,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/ldv-sets/test_add-2.i [2023-11-06 20:59:32,524 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:59:32,894 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:59:32,895 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/sv-benchmarks/c/ldv-sets/test_add-2.i [2023-11-06 20:59:32,916 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/data/6865865ba/f4fb77cedcd04006a8cd6128539cca83/FLAGcdacd0fff [2023-11-06 20:59:32,942 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/data/6865865ba/f4fb77cedcd04006a8cd6128539cca83 [2023-11-06 20:59:32,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:59:32,950 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:59:32,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:59:32,952 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:59:32,958 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:59:32,959 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:59:32" (1/1) ... [2023-11-06 20:59:32,961 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cf424ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:32, skipping insertion in model container [2023-11-06 20:59:32,961 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:59:32" (1/1) ... [2023-11-06 20:59:33,033 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:59:33,532 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_62515c4c-bc81-408f-a894-21f012dcd45b/sv-benchmarks/c/ldv-sets/test_add-2.i[25793,25806] [2023-11-06 20:59:33,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:59:33,554 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:59:33,615 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_62515c4c-bc81-408f-a894-21f012dcd45b/sv-benchmarks/c/ldv-sets/test_add-2.i[25793,25806] [2023-11-06 20:59:33,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:59:33,667 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:59:33,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:33 WrapperNode [2023-11-06 20:59:33,668 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:59:33,669 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:59:33,670 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:59:33,670 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:59:33,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:33" (1/1) ... [2023-11-06 20:59:33,701 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:33" (1/1) ... [2023-11-06 20:59:33,730 INFO L138 Inliner]: procedures = 135, calls = 46, calls flagged for inlining = 11, calls inlined = 7, statements flattened = 56 [2023-11-06 20:59:33,731 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:59:33,732 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:59:33,732 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:59:33,732 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:59:33,745 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:33" (1/1) ... [2023-11-06 20:59:33,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:33" (1/1) ... [2023-11-06 20:59:33,751 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:33" (1/1) ... [2023-11-06 20:59:33,751 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:33" (1/1) ... [2023-11-06 20:59:33,764 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:33" (1/1) ... [2023-11-06 20:59:33,768 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:33" (1/1) ... [2023-11-06 20:59:33,771 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:33" (1/1) ... [2023-11-06 20:59:33,773 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:33" (1/1) ... [2023-11-06 20:59:33,778 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:59:33,779 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:59:33,779 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:59:33,779 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:59:33,787 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:33" (1/1) ... [2023-11-06 20:59:33,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:59:33,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:59:33,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:59:33,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:59:33,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 20:59:33,895 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-11-06 20:59:33,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-11-06 20:59:33,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 20:59:33,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 20:59:33,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:59:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 20:59:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-11-06 20:59:33,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-11-06 20:59:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 20:59:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 20:59:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 20:59:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:59:33,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:59:34,089 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:59:34,092 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:59:34,456 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:59:34,530 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:59:34,530 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 20:59:34,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:59:34 BoogieIcfgContainer [2023-11-06 20:59:34,534 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:59:34,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:59:34,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:59:34,550 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:59:34,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:59:32" (1/3) ... [2023-11-06 20:59:34,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28324d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:59:34, skipping insertion in model container [2023-11-06 20:59:34,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:33" (2/3) ... [2023-11-06 20:59:34,552 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28324d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:59:34, skipping insertion in model container [2023-11-06 20:59:34,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:59:34" (3/3) ... [2023-11-06 20:59:34,554 INFO L112 eAbstractionObserver]: Analyzing ICFG test_add-2.i [2023-11-06 20:59:34,578 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:59:34,578 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 20:59:34,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:59:34,665 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=LoopsAndPotentialCycles, 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;@4d15f86e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:59:34,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 20:59:34,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 20:59:34,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-06 20:59:34,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:59:34,683 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:59:34,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:59:34,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:59:34,691 INFO L85 PathProgramCache]: Analyzing trace with hash 728934862, now seen corresponding path program 1 times [2023-11-06 20:59:34,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:59:34,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958410971] [2023-11-06 20:59:34,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:34,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:59:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:35,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 20:59:35,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:59:35,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958410971] [2023-11-06 20:59:35,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958410971] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 20:59:35,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867731595] [2023-11-06 20:59:35,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:35,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:59:35,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:59:35,107 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 20:59:35,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 20:59:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:35,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 20:59:35,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:59:35,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:59:35,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:59:35,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867731595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:59:35,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 20:59:35,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2023-11-06 20:59:35,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185109803] [2023-11-06 20:59:35,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:59:35,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:59:35,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:59:35,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:59:35,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:59:35,378 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 20:59:35,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:59:35,474 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2023-11-06 20:59:35,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:59:35,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-11-06 20:59:35,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:59:35,486 INFO L225 Difference]: With dead ends: 38 [2023-11-06 20:59:35,487 INFO L226 Difference]: Without dead ends: 23 [2023-11-06 20:59:35,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:59:35,495 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:59:35,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:59:35,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-06 20:59:35,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-06 20:59:35,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 20:59:35,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-11-06 20:59:35,554 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 17 [2023-11-06 20:59:35,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:59:35,556 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-11-06 20:59:35,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 20:59:35,557 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-11-06 20:59:35,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 20:59:35,560 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:59:35,561 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:59:35,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 20:59:35,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 20:59:35,767 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:59:35,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:59:35,768 INFO L85 PathProgramCache]: Analyzing trace with hash -695835813, now seen corresponding path program 1 times [2023-11-06 20:59:35,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:59:35,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223646528] [2023-11-06 20:59:35,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:35,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:59:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 20:59:36,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:59:36,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223646528] [2023-11-06 20:59:36,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223646528] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 20:59:36,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521882596] [2023-11-06 20:59:36,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:36,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:59:36,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:59:36,391 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 20:59:36,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 20:59:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:36,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 20:59:36,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:59:36,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:59:36,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:59:36,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521882596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:59:36,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 20:59:36,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2023-11-06 20:59:36,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599880785] [2023-11-06 20:59:36,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:59:36,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 20:59:36,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:59:36,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 20:59:36,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-06 20:59:36,824 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 20:59:36,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:59:36,986 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2023-11-06 20:59:36,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 20:59:36,987 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-11-06 20:59:36,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:59:36,990 INFO L225 Difference]: With dead ends: 55 [2023-11-06 20:59:36,991 INFO L226 Difference]: Without dead ends: 25 [2023-11-06 20:59:36,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 20:59:36,995 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 16 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:59:36,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 34 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:59:36,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-06 20:59:37,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2023-11-06 20:59:37,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 20:59:37,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-11-06 20:59:37,005 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 18 [2023-11-06 20:59:37,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:59:37,006 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-11-06 20:59:37,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 20:59:37,007 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-11-06 20:59:37,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-06 20:59:37,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:59:37,008 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:59:37,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 20:59:37,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:59:37,216 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:59:37,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:59:37,217 INFO L85 PathProgramCache]: Analyzing trace with hash 2079040903, now seen corresponding path program 1 times [2023-11-06 20:59:37,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:59:37,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286903882] [2023-11-06 20:59:37,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:37,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:59:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 20:59:38,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:59:38,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286903882] [2023-11-06 20:59:38,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286903882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:59:38,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:59:38,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 20:59:38,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174653001] [2023-11-06 20:59:38,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:59:38,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 20:59:38,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:59:38,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 20:59:38,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 20:59:38,027 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 8 states, 6 states have (on average 2.5) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 20:59:38,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:59:38,331 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2023-11-06 20:59:38,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 20:59:38,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2023-11-06 20:59:38,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:59:38,334 INFO L225 Difference]: With dead ends: 33 [2023-11-06 20:59:38,334 INFO L226 Difference]: Without dead ends: 27 [2023-11-06 20:59:38,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-06 20:59:38,336 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 23 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 20:59:38,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 55 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 20:59:38,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-06 20:59:38,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2023-11-06 20:59:38,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 20:59:38,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2023-11-06 20:59:38,346 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 21 [2023-11-06 20:59:38,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:59:38,346 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2023-11-06 20:59:38,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 20:59:38,347 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2023-11-06 20:59:38,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-06 20:59:38,348 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:59:38,348 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:59:38,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 20:59:38,349 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:59:38,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:59:38,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1952284402, now seen corresponding path program 1 times [2023-11-06 20:59:38,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:59:38,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724023768] [2023-11-06 20:59:38,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:38,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:59:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:38,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 20:59:38,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:59:38,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724023768] [2023-11-06 20:59:38,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724023768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:59:38,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:59:38,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 20:59:38,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531458675] [2023-11-06 20:59:38,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:59:38,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:59:38,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:59:38,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:59:38,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:59:38,462 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 20:59:38,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:59:38,531 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2023-11-06 20:59:38,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:59:38,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2023-11-06 20:59:38,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:59:38,533 INFO L225 Difference]: With dead ends: 30 [2023-11-06 20:59:38,533 INFO L226 Difference]: Without dead ends: 24 [2023-11-06 20:59:38,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:59:38,535 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:59:38,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:59:38,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-06 20:59:38,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-06 20:59:38,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 20:59:38,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2023-11-06 20:59:38,562 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2023-11-06 20:59:38,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:59:38,562 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2023-11-06 20:59:38,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 20:59:38,563 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2023-11-06 20:59:38,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-06 20:59:38,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:59:38,564 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] [2023-11-06 20:59:38,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 20:59:38,565 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:59:38,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:59:38,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1029693636, now seen corresponding path program 1 times [2023-11-06 20:59:38,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:59:38,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696264981] [2023-11-06 20:59:38,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:38,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:59:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:40,760 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 20:59:40,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:59:40,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696264981] [2023-11-06 20:59:40,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696264981] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 20:59:40,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118530861] [2023-11-06 20:59:40,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:59:40,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 20:59:40,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:59:40,765 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 20:59:40,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62515c4c-bc81-408f-a894-21f012dcd45b/bin/utaipan-verify-FOvIYxoinp/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 20:59:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:59:40,933 WARN L260 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 130 conjunts are in the unsatisfiable core [2023-11-06 20:59:40,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:59:41,512 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 20:59:41,514 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-06 20:59:41,546 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 7 treesize of output 3 [2023-11-06 20:59:41,572 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 20:59:41,572 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-06 20:59:41,586 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 20:59:41,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:59:41,862 INFO L322 Elim1Store]: treesize reduction 45, result has 16.7 percent of original size [2023-11-06 20:59:41,863 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 26 [2023-11-06 20:59:41,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:59:41,951 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 26 [2023-11-06 20:59:42,043 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 47 [2023-11-06 20:59:42,055 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 20:59:42,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Unexpected substitution problem. [2023-11-06 20:59:42,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1120113241] [2023-11-06 20:59:42,085 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-11-06 20:59:42,086 INFO L166 IcfgInterpreter]: Building call graph [2023-11-06 20:59:42,090 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-06 20:59:42,098 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-06 20:59:42,098 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-06 20:59:45,172 INFO L197 IcfgInterpreter]: Interpreting procedure __ldv_list_add with input of size 118 for LOIs [2023-11-06 20:59:45,227 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_is_in_set with input of size 246 for LOIs [2023-11-06 20:59:46,892 INFO L180 IcfgInterpreter]: Interpretation finished