./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_c0ddbece-2d77-4dfd-bdfa-02eb60fe1d75/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ddbece-2d77-4dfd-bdfa-02eb60fe1d75/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_c0ddbece-2d77-4dfd-bdfa-02eb60fe1d75/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ddbece-2d77-4dfd-bdfa-02eb60fe1d75/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ddbece-2d77-4dfd-bdfa-02eb60fe1d75/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ddbece-2d77-4dfd-bdfa-02eb60fe1d75/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:59:55,099 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:59:55,229 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ddbece-2d77-4dfd-bdfa-02eb60fe1d75/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:59:55,236 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:59:55,237 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:59:55,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:59:55,278 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:59:55,279 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:59:55,280 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:59:55,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:59:55,286 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:59:55,287 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:59:55,287 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:59:55,289 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:59:55,290 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:59:55,290 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:59:55,291 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:59:55,291 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:59:55,292 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:59:55,292 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:59:55,293 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:59:55,294 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:59:55,295 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:59:55,295 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:59:55,296 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:59:55,297 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:59:55,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:59:55,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:59:55,298 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:59:55,298 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:59:55,300 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:59:55,300 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:59:55,301 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:59:55,301 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:59:55,301 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:59:55,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:59:55,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:59:55,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:59:55,303 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:59:55,303 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:59:55,303 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:59:55,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:59:55,304 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:59:55,304 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:59:55,305 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:59:55,305 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_c0ddbece-2d77-4dfd-bdfa-02eb60fe1d75/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ddbece-2d77-4dfd-bdfa-02eb60fe1d75/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 [2023-11-12 00:59:55,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:59:55,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:59:55,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:59:55,613 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:59:55,614 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:59:55,616 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ddbece-2d77-4dfd-bdfa-02eb60fe1d75/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2023-11-12 00:59:58,729 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:59:59,030 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:59:59,030 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ddbece-2d77-4dfd-bdfa-02eb60fe1d75/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2023-11-12 00:59:59,061 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ddbece-2d77-4dfd-bdfa-02eb60fe1d75/bin/utaipan-verify-NcY6lQBIFX/data/7fc6f7bf0/38d0e9d1e28d44b38baa42c958ca5039/FLAG548bb5ea7 [2023-11-12 00:59:59,081 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ddbece-2d77-4dfd-bdfa-02eb60fe1d75/bin/utaipan-verify-NcY6lQBIFX/data/7fc6f7bf0/38d0e9d1e28d44b38baa42c958ca5039 [2023-11-12 00:59:59,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:59:59,090 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:59:59,095 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:59:59,095 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:59:59,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:59:59,107 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:59:59" (1/1) ... [2023-11-12 00:59:59,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33af7f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:59, skipping insertion in model container [2023-11-12 00:59:59,109 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:59:59" (1/1) ... [2023-11-12 00:59:59,169 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:59:59,347 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_c0ddbece-2d77-4dfd-bdfa-02eb60fe1d75/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2023-11-12 00:59:59,529 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:59:59,544 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:59:59,560 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_c0ddbece-2d77-4dfd-bdfa-02eb60fe1d75/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2023-11-12 00:59:59,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:59:59,679 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:59:59,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:59 WrapperNode [2023-11-12 00:59:59,680 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:59:59,681 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:59:59,681 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:59:59,681 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:59:59,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:59" (1/1) ... [2023-11-12 00:59:59,717 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:59" (1/1) ... [2023-11-12 00:59:59,771 INFO L138 Inliner]: procedures = 165, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2023-11-12 00:59:59,772 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:59:59,772 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:59:59,772 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:59:59,773 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:59:59,781 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:59" (1/1) ... [2023-11-12 00:59:59,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:59" (1/1) ... [2023-11-12 00:59:59,786 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:59" (1/1) ... [2023-11-12 00:59:59,786 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:59" (1/1) ... [2023-11-12 00:59:59,793 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:59" (1/1) ... [2023-11-12 00:59:59,797 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:59" (1/1) ... [2023-11-12 00:59:59,799 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:59" (1/1) ... [2023-11-12 00:59:59,801 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:59" (1/1) ... [2023-11-12 00:59:59,805 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:59:59,806 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:59:59,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:59:59,807 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:59:59,808 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:59" (1/1) ... [2023-11-12 00:59:59,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:59:59,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ddbece-2d77-4dfd-bdfa-02eb60fe1d75/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:59:59,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ddbece-2d77-4dfd-bdfa-02eb60fe1d75/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:59:59,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ddbece-2d77-4dfd-bdfa-02eb60fe1d75/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:59:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-12 00:59:59,886 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-12 00:59:59,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:59:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 00:59:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:59:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:59:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-11-12 00:59:59,887 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-11-12 00:59:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-12 00:59:59,887 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-12 00:59:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:59:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:59:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:59:59,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:59:59,890 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 01:00:00,032 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:00:00,034 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:00:00,308 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:00:00,318 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:00:00,318 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 01:00:00,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:00:00 BoogieIcfgContainer [2023-11-12 01:00:00,321 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:00:00,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:00:00,325 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:00:00,328 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:00:00,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:59:59" (1/3) ... [2023-11-12 01:00:00,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bceebf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:00:00, skipping insertion in model container [2023-11-12 01:00:00,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:59:59" (2/3) ... [2023-11-12 01:00:00,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bceebf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:00:00, skipping insertion in model container [2023-11-12 01:00:00,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:00:00" (3/3) ... [2023-11-12 01:00:00,366 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2023-11-12 01:00:00,375 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 01:00:00,387 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:00:00,388 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-12 01:00:00,388 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 01:00:00,496 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 01:00:00,541 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 01:00:00,554 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 170 transitions, 352 flow [2023-11-12 01:00:00,557 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 170 transitions, 352 flow [2023-11-12 01:00:00,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 170 transitions, 352 flow [2023-11-12 01:00:00,670 INFO L124 PetriNetUnfolderBase]: 5/167 cut-off events. [2023-11-12 01:00:00,670 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 01:00:00,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 167 events. 5/167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 278 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 132. Up to 2 conditions per place. [2023-11-12 01:00:00,696 INFO L119 LiptonReduction]: Number of co-enabled transitions 10714 [2023-11-12 01:00:07,488 INFO L134 LiptonReduction]: Checked pairs total: 24847 [2023-11-12 01:00:07,488 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-11-12 01:00:07,497 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 43 transitions, 98 flow [2023-11-12 01:00:07,806 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4932 states, 4921 states have (on average 3.971144076407234) internal successors, (19542), 4931 states have internal predecessors, (19542), 0 states have call successors, (0), 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 01:00:07,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:00:07,830 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;@7b896ac6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:00:07,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-12 01:00:07,851 INFO L276 IsEmpty]: Start isEmpty. Operand has 4932 states, 4921 states have (on average 3.971144076407234) internal successors, (19542), 4931 states have internal predecessors, (19542), 0 states have call successors, (0), 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 01:00:07,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 01:00:07,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:07,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:07,866 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-12 01:00:07,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:07,876 INFO L85 PathProgramCache]: Analyzing trace with hash 375225841, now seen corresponding path program 1 times [2023-11-12 01:00:07,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:07,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624245698] [2023-11-12 01:00:07,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:07,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:08,150 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 01:00:08,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:08,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624245698] [2023-11-12 01:00:08,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624245698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:08,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:08,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:00:08,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365703812] [2023-11-12 01:00:08,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:08,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 01:00:08,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:08,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 01:00:08,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 01:00:08,200 INFO L87 Difference]: Start difference. First operand has 4932 states, 4921 states have (on average 3.971144076407234) internal successors, (19542), 4931 states have internal predecessors, (19542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 01:00:08,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:08,368 INFO L93 Difference]: Finished difference Result 4932 states and 17662 transitions. [2023-11-12 01:00:08,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 01:00:08,371 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 01:00:08,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:08,459 INFO L225 Difference]: With dead ends: 4932 [2023-11-12 01:00:08,460 INFO L226 Difference]: Without dead ends: 4932 [2023-11-12 01:00:08,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 01:00:08,468 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:08,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:00:08,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4932 states. [2023-11-12 01:00:08,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4932 to 4932. [2023-11-12 01:00:08,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4932 states, 4921 states have (on average 3.5891079048973786) internal successors, (17662), 4931 states have internal predecessors, (17662), 0 states have call successors, (0), 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 01:00:08,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4932 states to 4932 states and 17662 transitions. [2023-11-12 01:00:08,877 INFO L78 Accepts]: Start accepts. Automaton has 4932 states and 17662 transitions. Word has length 8 [2023-11-12 01:00:08,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:08,878 INFO L495 AbstractCegarLoop]: Abstraction has 4932 states and 17662 transitions. [2023-11-12 01:00:08,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 01:00:08,880 INFO L276 IsEmpty]: Start isEmpty. Operand 4932 states and 17662 transitions. [2023-11-12 01:00:08,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 01:00:08,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:08,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:08,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 01:00:08,884 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-12 01:00:08,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:08,885 INFO L85 PathProgramCache]: Analyzing trace with hash 375750963, now seen corresponding path program 1 times [2023-11-12 01:00:08,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:08,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91514679] [2023-11-12 01:00:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:08,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:09,264 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 01:00:09,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:09,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91514679] [2023-11-12 01:00:09,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91514679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:09,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:09,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:00:09,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373031691] [2023-11-12 01:00:09,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:09,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 01:00:09,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:09,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 01:00:09,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:00:09,268 INFO L87 Difference]: Start difference. First operand 4932 states and 17662 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 01:00:09,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:09,756 INFO L93 Difference]: Finished difference Result 5834 states and 20301 transitions. [2023-11-12 01:00:09,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 01:00:09,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 01:00:09,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:09,825 INFO L225 Difference]: With dead ends: 5834 [2023-11-12 01:00:09,825 INFO L226 Difference]: Without dead ends: 5820 [2023-11-12 01:00:09,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:00:09,828 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 135 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:09,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 44 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 01:00:09,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5820 states. [2023-11-12 01:00:10,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5820 to 5577. [2023-11-12 01:00:10,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5577 states, 5566 states have (on average 3.5330578512396693) internal successors, (19665), 5576 states have internal predecessors, (19665), 0 states have call successors, (0), 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 01:00:10,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 19665 transitions. [2023-11-12 01:00:10,109 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 19665 transitions. Word has length 8 [2023-11-12 01:00:10,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:10,110 INFO L495 AbstractCegarLoop]: Abstraction has 5577 states and 19665 transitions. [2023-11-12 01:00:10,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 01:00:10,113 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 19665 transitions. [2023-11-12 01:00:10,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 01:00:10,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:10,116 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:10,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 01:00:10,117 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-12 01:00:10,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:10,118 INFO L85 PathProgramCache]: Analyzing trace with hash -187534903, now seen corresponding path program 1 times [2023-11-12 01:00:10,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:10,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613223815] [2023-11-12 01:00:10,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:10,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:10,345 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 01:00:10,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:10,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613223815] [2023-11-12 01:00:10,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613223815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:10,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:10,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:00:10,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155857704] [2023-11-12 01:00:10,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:10,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 01:00:10,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:10,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 01:00:10,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:00:10,355 INFO L87 Difference]: Start difference. First operand 5577 states and 19665 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:10,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:10,686 INFO L93 Difference]: Finished difference Result 6299 states and 22078 transitions. [2023-11-12 01:00:10,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 01:00:10,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-12 01:00:10,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:10,739 INFO L225 Difference]: With dead ends: 6299 [2023-11-12 01:00:10,739 INFO L226 Difference]: Without dead ends: 6299 [2023-11-12 01:00:10,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:00:10,741 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 111 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:10,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 44 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:00:10,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6299 states. [2023-11-12 01:00:10,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6299 to 5949. [2023-11-12 01:00:10,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5949 states, 5938 states have (on average 3.521892893230044) internal successors, (20913), 5948 states have internal predecessors, (20913), 0 states have call successors, (0), 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 01:00:11,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5949 states to 5949 states and 20913 transitions. [2023-11-12 01:00:11,093 INFO L78 Accepts]: Start accepts. Automaton has 5949 states and 20913 transitions. Word has length 10 [2023-11-12 01:00:11,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:11,093 INFO L495 AbstractCegarLoop]: Abstraction has 5949 states and 20913 transitions. [2023-11-12 01:00:11,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:11,094 INFO L276 IsEmpty]: Start isEmpty. Operand 5949 states and 20913 transitions. [2023-11-12 01:00:11,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 01:00:11,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:11,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:11,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 01:00:11,097 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-12 01:00:11,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:11,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1889764064, now seen corresponding path program 1 times [2023-11-12 01:00:11,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:11,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750842497] [2023-11-12 01:00:11,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:11,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:11,201 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 01:00:11,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:11,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750842497] [2023-11-12 01:00:11,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750842497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:11,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:11,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:00:11,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680474183] [2023-11-12 01:00:11,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:11,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:00:11,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:11,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:00:11,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:11,205 INFO L87 Difference]: Start difference. First operand 5949 states and 20913 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:11,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:11,344 INFO L93 Difference]: Finished difference Result 4111 states and 11067 transitions. [2023-11-12 01:00:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:00:11,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-12 01:00:11,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:11,365 INFO L225 Difference]: With dead ends: 4111 [2023-11-12 01:00:11,365 INFO L226 Difference]: Without dead ends: 4107 [2023-11-12 01:00:11,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:00:11,367 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 16 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:11,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 16 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:00:11,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2023-11-12 01:00:11,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 3641. [2023-11-12 01:00:11,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3641 states, 3616 states have (on average 2.7370022123893807) internal successors, (9897), 3640 states have internal predecessors, (9897), 0 states have call successors, (0), 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 01:00:11,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3641 states to 3641 states and 9897 transitions. [2023-11-12 01:00:11,588 INFO L78 Accepts]: Start accepts. Automaton has 3641 states and 9897 transitions. Word has length 11 [2023-11-12 01:00:11,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:11,589 INFO L495 AbstractCegarLoop]: Abstraction has 3641 states and 9897 transitions. [2023-11-12 01:00:11,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:11,589 INFO L276 IsEmpty]: Start isEmpty. Operand 3641 states and 9897 transitions. [2023-11-12 01:00:11,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 01:00:11,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:11,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:11,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 01:00:11,591 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-12 01:00:11,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:11,591 INFO L85 PathProgramCache]: Analyzing trace with hash 2035405916, now seen corresponding path program 1 times [2023-11-12 01:00:11,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:11,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642211367] [2023-11-12 01:00:11,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:11,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:11,719 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 01:00:11,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:11,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642211367] [2023-11-12 01:00:11,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642211367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:11,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:11,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:00:11,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088388237] [2023-11-12 01:00:11,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:11,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 01:00:11,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:11,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 01:00:11,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:00:11,722 INFO L87 Difference]: Start difference. First operand 3641 states and 9897 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:11,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:11,950 INFO L93 Difference]: Finished difference Result 3722 states and 10127 transitions. [2023-11-12 01:00:11,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 01:00:11,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-12 01:00:11,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:11,966 INFO L225 Difference]: With dead ends: 3722 [2023-11-12 01:00:11,967 INFO L226 Difference]: Without dead ends: 3643 [2023-11-12 01:00:11,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 01:00:12,024 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 115 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:12,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 38 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:00:12,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3643 states. [2023-11-12 01:00:12,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3643 to 3609. [2023-11-12 01:00:12,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 3584 states have (on average 2.7296316964285716) internal successors, (9783), 3608 states have internal predecessors, (9783), 0 states have call successors, (0), 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 01:00:12,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 9783 transitions. [2023-11-12 01:00:12,153 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 9783 transitions. Word has length 12 [2023-11-12 01:00:12,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:12,153 INFO L495 AbstractCegarLoop]: Abstraction has 3609 states and 9783 transitions. [2023-11-12 01:00:12,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:12,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 9783 transitions. [2023-11-12 01:00:12,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 01:00:12,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:12,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:12,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 01:00:12,159 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-12 01:00:12,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:12,160 INFO L85 PathProgramCache]: Analyzing trace with hash 463651393, now seen corresponding path program 1 times [2023-11-12 01:00:12,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:12,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020026922] [2023-11-12 01:00:12,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:12,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:12,330 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 01:00:12,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:12,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020026922] [2023-11-12 01:00:12,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020026922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:12,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:12,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 01:00:12,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293538992] [2023-11-12 01:00:12,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:12,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 01:00:12,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:12,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 01:00:12,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:00:12,333 INFO L87 Difference]: Start difference. First operand 3609 states and 9783 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 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 01:00:12,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:12,873 INFO L93 Difference]: Finished difference Result 4222 states and 11268 transitions. [2023-11-12 01:00:12,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 01:00:12,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 01:00:12,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:12,892 INFO L225 Difference]: With dead ends: 4222 [2023-11-12 01:00:12,892 INFO L226 Difference]: Without dead ends: 4205 [2023-11-12 01:00:12,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-12 01:00:12,896 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 149 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:12,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 51 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 01:00:12,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4205 states. [2023-11-12 01:00:13,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4205 to 3611. [2023-11-12 01:00:13,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3611 states, 3588 states have (on average 2.7371794871794872) internal successors, (9821), 3610 states have internal predecessors, (9821), 0 states have call successors, (0), 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 01:00:13,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3611 states to 3611 states and 9821 transitions. [2023-11-12 01:00:13,084 INFO L78 Accepts]: Start accepts. Automaton has 3611 states and 9821 transitions. Word has length 13 [2023-11-12 01:00:13,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:13,084 INFO L495 AbstractCegarLoop]: Abstraction has 3611 states and 9821 transitions. [2023-11-12 01:00:13,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 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 01:00:13,085 INFO L276 IsEmpty]: Start isEmpty. Operand 3611 states and 9821 transitions. [2023-11-12 01:00:13,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 01:00:13,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:13,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:13,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 01:00:13,086 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-12 01:00:13,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:13,087 INFO L85 PathProgramCache]: Analyzing trace with hash 900184788, now seen corresponding path program 1 times [2023-11-12 01:00:13,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:13,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161895002] [2023-11-12 01:00:13,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:13,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:13,177 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 01:00:13,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:13,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161895002] [2023-11-12 01:00:13,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161895002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:13,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:13,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:00:13,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054482534] [2023-11-12 01:00:13,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:13,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:00:13,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:13,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:00:13,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:00:13,182 INFO L87 Difference]: Start difference. First operand 3611 states and 9821 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 01:00:13,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:13,324 INFO L93 Difference]: Finished difference Result 2914 states and 7498 transitions. [2023-11-12 01:00:13,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:00:13,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 01:00:13,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:13,335 INFO L225 Difference]: With dead ends: 2914 [2023-11-12 01:00:13,335 INFO L226 Difference]: Without dead ends: 2614 [2023-11-12 01:00:13,335 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 01:00:13,336 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 52 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:13,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 64 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:00:13,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2023-11-12 01:00:13,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 2614. [2023-11-12 01:00:13,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2614 states, 2595 states have (on average 2.5491329479768785) internal successors, (6615), 2613 states have internal predecessors, (6615), 0 states have call successors, (0), 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 01:00:13,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 6615 transitions. [2023-11-12 01:00:13,450 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 6615 transitions. Word has length 13 [2023-11-12 01:00:13,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:13,450 INFO L495 AbstractCegarLoop]: Abstraction has 2614 states and 6615 transitions. [2023-11-12 01:00:13,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 01:00:13,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 6615 transitions. [2023-11-12 01:00:13,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 01:00:13,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:13,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:13,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 01:00:13,453 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-12 01:00:13,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:13,453 INFO L85 PathProgramCache]: Analyzing trace with hash 104151319, now seen corresponding path program 1 times [2023-11-12 01:00:13,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:13,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985415126] [2023-11-12 01:00:13,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:13,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:13,697 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 01:00:13,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:13,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985415126] [2023-11-12 01:00:13,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985415126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:13,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:13,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:00:13,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386668879] [2023-11-12 01:00:13,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:13,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 01:00:13,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:13,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 01:00:13,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:00:13,700 INFO L87 Difference]: Start difference. First operand 2614 states and 6615 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 01:00:13,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:13,792 INFO L93 Difference]: Finished difference Result 1281 states and 2680 transitions. [2023-11-12 01:00:13,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:00:13,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-12 01:00:13,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:13,797 INFO L225 Difference]: With dead ends: 1281 [2023-11-12 01:00:13,798 INFO L226 Difference]: Without dead ends: 1222 [2023-11-12 01:00:13,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:00:13,799 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 37 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:13,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 19 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:00:13,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2023-11-12 01:00:13,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1194. [2023-11-12 01:00:13,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 1180 states have (on average 2.1313559322033897) internal successors, (2515), 1193 states have internal predecessors, (2515), 0 states have call successors, (0), 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 01:00:13,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 2515 transitions. [2023-11-12 01:00:13,838 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 2515 transitions. Word has length 15 [2023-11-12 01:00:13,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:13,839 INFO L495 AbstractCegarLoop]: Abstraction has 1194 states and 2515 transitions. [2023-11-12 01:00:13,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 01:00:13,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 2515 transitions. [2023-11-12 01:00:13,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 01:00:13,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:13,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:13,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 01:00:13,841 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-12 01:00:13,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:13,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1131583501, now seen corresponding path program 1 times [2023-11-12 01:00:13,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:13,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248005284] [2023-11-12 01:00:13,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:13,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:13,965 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 01:00:13,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:13,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248005284] [2023-11-12 01:00:13,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248005284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:13,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:13,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 01:00:13,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189440796] [2023-11-12 01:00:13,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:13,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 01:00:13,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:13,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 01:00:13,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:00:13,968 INFO L87 Difference]: Start difference. First operand 1194 states and 2515 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:14,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:14,413 INFO L93 Difference]: Finished difference Result 1338 states and 2744 transitions. [2023-11-12 01:00:14,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 01:00:14,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-12 01:00:14,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:14,418 INFO L225 Difference]: With dead ends: 1338 [2023-11-12 01:00:14,418 INFO L226 Difference]: Without dead ends: 1266 [2023-11-12 01:00:14,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2023-11-12 01:00:14,419 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 176 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:14,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 44 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 01:00:14,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2023-11-12 01:00:14,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1111. [2023-11-12 01:00:14,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1100 states have (on average 2.100909090909091) internal successors, (2311), 1110 states have internal predecessors, (2311), 0 states have call successors, (0), 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 01:00:14,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 2311 transitions. [2023-11-12 01:00:14,457 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 2311 transitions. Word has length 16 [2023-11-12 01:00:14,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:14,458 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 2311 transitions. [2023-11-12 01:00:14,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:14,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 2311 transitions. [2023-11-12 01:00:14,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-12 01:00:14,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:14,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:14,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 01:00:14,461 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-12 01:00:14,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:14,462 INFO L85 PathProgramCache]: Analyzing trace with hash -425489042, now seen corresponding path program 1 times [2023-11-12 01:00:14,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:14,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684788140] [2023-11-12 01:00:14,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:14,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:14,618 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 01:00:14,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:14,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684788140] [2023-11-12 01:00:14,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684788140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:14,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:14,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 01:00:14,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777895850] [2023-11-12 01:00:14,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:14,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 01:00:14,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:14,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 01:00:14,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:00:14,620 INFO L87 Difference]: Start difference. First operand 1111 states and 2311 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 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 01:00:14,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:14,970 INFO L93 Difference]: Finished difference Result 1218 states and 2564 transitions. [2023-11-12 01:00:14,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 01:00:14,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-11-12 01:00:14,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:14,974 INFO L225 Difference]: With dead ends: 1218 [2023-11-12 01:00:14,974 INFO L226 Difference]: Without dead ends: 1132 [2023-11-12 01:00:14,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2023-11-12 01:00:14,975 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 148 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:14,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 44 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 01:00:14,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2023-11-12 01:00:14,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1040. [2023-11-12 01:00:15,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 1034 states have (on average 2.0705996131528046) internal successors, (2141), 1039 states have internal predecessors, (2141), 0 states have call successors, (0), 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 01:00:15,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 2141 transitions. [2023-11-12 01:00:15,003 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 2141 transitions. Word has length 19 [2023-11-12 01:00:15,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:15,003 INFO L495 AbstractCegarLoop]: Abstraction has 1040 states and 2141 transitions. [2023-11-12 01:00:15,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 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 01:00:15,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 2141 transitions. [2023-11-12 01:00:15,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-12 01:00:15,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:15,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:15,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 01:00:15,006 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-12 01:00:15,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:15,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1453149605, now seen corresponding path program 1 times [2023-11-12 01:00:15,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:15,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978807750] [2023-11-12 01:00:15,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:15,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:15,183 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 01:00:15,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:15,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978807750] [2023-11-12 01:00:15,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978807750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:15,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:15,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:00:15,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942973973] [2023-11-12 01:00:15,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:15,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 01:00:15,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:15,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 01:00:15,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:00:15,186 INFO L87 Difference]: Start difference. First operand 1040 states and 2141 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 01:00:15,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:15,258 INFO L93 Difference]: Finished difference Result 417 states and 711 transitions. [2023-11-12 01:00:15,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:00:15,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-11-12 01:00:15,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:15,262 INFO L225 Difference]: With dead ends: 417 [2023-11-12 01:00:15,262 INFO L226 Difference]: Without dead ends: 344 [2023-11-12 01:00:15,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:00:15,263 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:15,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 7 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:00:15,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-11-12 01:00:15,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 306. [2023-11-12 01:00:15,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 1.7836065573770492) internal successors, (544), 305 states have internal predecessors, (544), 0 states have call successors, (0), 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 01:00:15,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 544 transitions. [2023-11-12 01:00:15,274 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 544 transitions. Word has length 19 [2023-11-12 01:00:15,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:15,274 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 544 transitions. [2023-11-12 01:00:15,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 01:00:15,274 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 544 transitions. [2023-11-12 01:00:15,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-12 01:00:15,275 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:00:15,276 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] [2023-11-12 01:00:15,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 01:00:15,276 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-12 01:00:15,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:00:15,277 INFO L85 PathProgramCache]: Analyzing trace with hash 2050532195, now seen corresponding path program 1 times [2023-11-12 01:00:15,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:00:15,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946643717] [2023-11-12 01:00:15,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:00:15,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:00:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:00:15,437 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 01:00:15,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:00:15,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946643717] [2023-11-12 01:00:15,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946643717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:00:15,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:00:15,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 01:00:15,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581502517] [2023-11-12 01:00:15,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:00:15,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 01:00:15,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:00:15,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 01:00:15,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 01:00:15,439 INFO L87 Difference]: Start difference. First operand 306 states and 544 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:15,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:00:15,598 INFO L93 Difference]: Finished difference Result 281 states and 494 transitions. [2023-11-12 01:00:15,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 01:00:15,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-12 01:00:15,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:00:15,599 INFO L225 Difference]: With dead ends: 281 [2023-11-12 01:00:15,599 INFO L226 Difference]: Without dead ends: 0 [2023-11-12 01:00:15,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-12 01:00:15,600 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 62 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:00:15,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 18 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:00:15,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-12 01:00:15,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-12 01:00:15,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:15,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-12 01:00:15,602 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2023-11-12 01:00:15,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:00:15,602 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 01:00:15,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:00:15,602 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-12 01:00:15,602 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-12 01:00:15,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2023-11-12 01:00:15,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2023-11-12 01:00:15,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2023-11-12 01:00:15,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2023-11-12 01:00:15,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2023-11-12 01:00:15,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 9 remaining) [2023-11-12 01:00:15,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-11-12 01:00:15,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2023-11-12 01:00:15,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2023-11-12 01:00:15,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 01:00:15,610 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:00:15,615 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 01:00:15,615 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 01:00:15,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 01:00:15 BasicIcfg [2023-11-12 01:00:15,618 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 01:00:15,619 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 01:00:15,619 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 01:00:15,619 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 01:00:15,620 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:00:00" (3/4) ... [2023-11-12 01:00:15,621 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 01:00:15,625 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2023-11-12 01:00:15,626 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t3_fun [2023-11-12 01:00:15,626 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-12 01:00:15,631 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-12 01:00:15,631 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-12 01:00:15,632 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 01:00:15,632 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 01:00:15,718 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ddbece-2d77-4dfd-bdfa-02eb60fe1d75/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 01:00:15,719 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ddbece-2d77-4dfd-bdfa-02eb60fe1d75/bin/utaipan-verify-NcY6lQBIFX/witness.yml [2023-11-12 01:00:15,719 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 01:00:15,719 INFO L158 Benchmark]: Toolchain (without parser) took 16629.70ms. Allocated memory was 157.3MB in the beginning and 633.3MB in the end (delta: 476.1MB). Free memory was 111.3MB in the beginning and 379.0MB in the end (delta: -267.7MB). Peak memory consumption was 209.7MB. Max. memory is 16.1GB. [2023-11-12 01:00:15,720 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 127.9MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 01:00:15,720 INFO L158 Benchmark]: CACSL2BoogieTranslator took 585.29ms. Allocated memory is still 157.3MB. Free memory was 111.3MB in the beginning and 91.0MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-12 01:00:15,720 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.00ms. Allocated memory is still 157.3MB. Free memory was 91.0MB in the beginning and 88.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 01:00:15,721 INFO L158 Benchmark]: Boogie Preprocessor took 33.29ms. Allocated memory is still 157.3MB. Free memory was 88.9MB in the beginning and 86.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 01:00:15,722 INFO L158 Benchmark]: RCFGBuilder took 515.01ms. Allocated memory is still 157.3MB. Free memory was 86.8MB in the beginning and 69.4MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-12 01:00:15,723 INFO L158 Benchmark]: TraceAbstraction took 15293.74ms. Allocated memory was 157.3MB in the beginning and 633.3MB in the end (delta: 476.1MB). Free memory was 68.8MB in the beginning and 384.2MB in the end (delta: -315.5MB). Peak memory consumption was 163.5MB. Max. memory is 16.1GB. [2023-11-12 01:00:15,723 INFO L158 Benchmark]: Witness Printer took 100.18ms. Allocated memory is still 633.3MB. Free memory was 384.2MB in the beginning and 379.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 01:00:15,725 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 127.9MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 585.29ms. Allocated memory is still 157.3MB. Free memory was 111.3MB in the beginning and 91.0MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.00ms. Allocated memory is still 157.3MB. Free memory was 91.0MB in the beginning and 88.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.29ms. Allocated memory is still 157.3MB. Free memory was 88.9MB in the beginning and 86.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 515.01ms. Allocated memory is still 157.3MB. Free memory was 86.8MB in the beginning and 69.4MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 15293.74ms. Allocated memory was 157.3MB in the beginning and 633.3MB in the end (delta: 476.1MB). Free memory was 68.8MB in the beginning and 384.2MB in the end (delta: -315.5MB). Peak memory consumption was 163.5MB. Max. memory is 16.1GB. * Witness Printer took 100.18ms. Allocated memory is still 633.3MB. Free memory was 384.2MB in the beginning and 379.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.9s, 175 PlacesBefore, 49 PlacesAfterwards, 170 TransitionsBefore, 43 TransitionsAfterwards, 10714 CoEnabledTransitionPairs, 9 FixpointIterations, 37 TrivialSequentialCompositions, 110 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 20 ConcurrentYvCompositions, 1 ChoiceCompositions, 168 TotalNumberOfCompositions, 24847 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13916, independent: 13475, independent conditional: 0, independent unconditional: 13475, dependent: 441, dependent conditional: 0, dependent unconditional: 441, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7727, independent: 7622, independent conditional: 0, independent unconditional: 7622, dependent: 105, dependent conditional: 0, dependent unconditional: 105, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7727, independent: 7445, independent conditional: 0, independent unconditional: 7445, dependent: 282, dependent conditional: 0, dependent unconditional: 282, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 282, independent: 177, independent conditional: 0, independent unconditional: 177, dependent: 105, dependent conditional: 0, dependent unconditional: 105, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 504, independent: 222, independent conditional: 0, independent unconditional: 222, dependent: 283, dependent conditional: 0, dependent unconditional: 283, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 13916, independent: 5853, independent conditional: 0, independent unconditional: 5853, dependent: 336, dependent conditional: 0, dependent unconditional: 336, unknown: 7727, unknown conditional: 0, unknown unconditional: 7727] , Statistics on independence cache: Total cache size (in pairs): 474, Positive cache size: 430, Positive conditional cache size: 0, Positive unconditional cache size: 430, Negative cache size: 44, Negative conditional cache size: 0, Negative unconditional cache size: 44, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 245 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 15.1s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1038 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1038 mSDsluCounter, 401 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 232 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2161 IncrementalHoareTripleChecker+Invalid, 2220 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 169 mSDtfsCounter, 2161 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5949occurred in iteration=3, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 2000 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 165 NumberOfCodeBlocks, 165 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 153 ConstructedInterpolants, 0 QuantifiedInterpolants, 488 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-12 01:00:15,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0ddbece-2d77-4dfd-bdfa-02eb60fe1d75/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE