./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E --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 b1fa78b32466948213cdbfc05d3adcde2ac2fc14323ec3ac2f4b441976452676 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 02:58:05,698 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 02:58:05,785 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 02:58:05,794 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 02:58:05,794 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 02:58:05,831 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 02:58:05,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 02:58:05,833 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 02:58:05,833 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 02:58:05,834 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 02:58:05,834 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 02:58:05,835 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 02:58:05,835 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 02:58:05,835 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 02:58:05,835 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 02:58:05,836 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 02:58:05,836 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 02:58:05,836 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 02:58:05,836 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 02:58:05,836 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 02:58:05,836 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 02:58:05,836 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 02:58:05,837 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 02:58:05,837 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 02:58:05,837 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 02:58:05,837 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 02:58:05,837 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 02:58:05,837 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 02:58:05,838 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 02:58:05,838 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 02:58:05,838 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 02:58:05,838 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 02:58:05,838 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 02:58:05,838 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 02:58:05,838 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 02:58:05,838 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 02:58:05,839 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 02:58:05,839 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 02:58:05,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:58:05,839 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 02:58:05,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 02:58:05,839 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 02:58:05,839 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 02:58:05,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 02:58:05,840 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 02:58:05,840 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 02:58:05,840 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 02:58:05,840 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E 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 -> b1fa78b32466948213cdbfc05d3adcde2ac2fc14323ec3ac2f4b441976452676 [2024-11-14 02:58:06,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 02:58:06,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 02:58:06,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 02:58:06,161 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 02:58:06,161 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 02:58:06,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c Unable to find full path for "g++" [2024-11-14 02:58:08,055 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 02:58:08,352 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 02:58:08,353 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2024-11-14 02:58:08,364 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/data/739c7037e/42f815c47b914f01b797d35a24f8d9dc/FLAG7a397a01d [2024-11-14 02:58:08,631 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/data/739c7037e/42f815c47b914f01b797d35a24f8d9dc [2024-11-14 02:58:08,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 02:58:08,635 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 02:58:08,636 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 02:58:08,636 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 02:58:08,641 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 02:58:08,641 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:58:08" (1/1) ... [2024-11-14 02:58:08,642 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a807a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:08, skipping insertion in model container [2024-11-14 02:58:08,642 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:58:08" (1/1) ... [2024-11-14 02:58:08,668 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:58:08,991 WARN L250 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_b433fc8c-e955-484b-a017-843ac92c3759/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c[14595,14608] [2024-11-14 02:58:08,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:58:09,019 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 02:58:09,107 WARN L250 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_b433fc8c-e955-484b-a017-843ac92c3759/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c[14595,14608] [2024-11-14 02:58:09,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:58:09,123 INFO L204 MainTranslator]: Completed translation [2024-11-14 02:58:09,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:09 WrapperNode [2024-11-14 02:58:09,123 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 02:58:09,125 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 02:58:09,125 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 02:58:09,125 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 02:58:09,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:09" (1/1) ... [2024-11-14 02:58:09,147 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:09" (1/1) ... [2024-11-14 02:58:09,191 INFO L138 Inliner]: procedures = 32, calls = 47, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 510 [2024-11-14 02:58:09,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 02:58:09,192 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 02:58:09,192 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 02:58:09,192 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 02:58:09,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:09" (1/1) ... [2024-11-14 02:58:09,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:09" (1/1) ... [2024-11-14 02:58:09,211 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:09" (1/1) ... [2024-11-14 02:58:09,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:09" (1/1) ... [2024-11-14 02:58:09,235 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:09" (1/1) ... [2024-11-14 02:58:09,248 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:09" (1/1) ... [2024-11-14 02:58:09,255 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:09" (1/1) ... [2024-11-14 02:58:09,256 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:09" (1/1) ... [2024-11-14 02:58:09,261 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 02:58:09,264 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 02:58:09,264 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 02:58:09,266 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 02:58:09,267 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:09" (1/1) ... [2024-11-14 02:58:09,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:58:09,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:09,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 02:58:09,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 02:58:09,331 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2024-11-14 02:58:09,331 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2024-11-14 02:58:09,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 02:58:09,332 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2024-11-14 02:58:09,332 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2024-11-14 02:58:09,332 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-14 02:58:09,332 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-14 02:58:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 02:58:09,333 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 02:58:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 02:58:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2024-11-14 02:58:09,333 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2024-11-14 02:58:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 02:58:09,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 02:58:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2024-11-14 02:58:09,334 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2024-11-14 02:58:09,471 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 02:58:09,473 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 02:58:10,273 INFO L? ?]: Removed 117 outVars from TransFormulas that were not future-live. [2024-11-14 02:58:10,274 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 02:58:10,510 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 02:58:10,510 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 02:58:10,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:58:10 BoogieIcfgContainer [2024-11-14 02:58:10,511 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 02:58:10,513 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 02:58:10,513 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 02:58:10,518 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 02:58:10,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 02:58:08" (1/3) ... [2024-11-14 02:58:10,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6280cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:58:10, skipping insertion in model container [2024-11-14 02:58:10,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:58:09" (2/3) ... [2024-11-14 02:58:10,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6280cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:58:10, skipping insertion in model container [2024-11-14 02:58:10,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:58:10" (3/3) ... [2024-11-14 02:58:10,521 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c [2024-11-14 02:58:10,538 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 02:58:10,540 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_STARTPALS_ActiveStandby.5.ufo.BOUNDED-10.pals.c that has 7 procedures, 142 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 02:58:10,612 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 02:58:10,625 INFO L333 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, 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;@5382fc4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 02:58:10,625 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 02:58:10,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 105 states have (on average 1.5238095238095237) internal successors, (160), 106 states have internal predecessors, (160), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-14 02:58:10,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-14 02:58:10,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:10,637 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:10,637 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:10,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:10,644 INFO L85 PathProgramCache]: Analyzing trace with hash -387061732, now seen corresponding path program 1 times [2024-11-14 02:58:10,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:10,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399197018] [2024-11-14 02:58:10,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:10,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:11,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:58:11,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:11,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399197018] [2024-11-14 02:58:11,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399197018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:11,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:11,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:58:11,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853585396] [2024-11-14 02:58:11,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:11,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:58:11,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:11,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:58:11,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:58:11,436 INFO L87 Difference]: Start difference. First operand has 142 states, 105 states have (on average 1.5238095238095237) internal successors, (160), 106 states have internal predecessors, (160), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 02:58:11,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:11,642 INFO L93 Difference]: Finished difference Result 285 states and 463 transitions. [2024-11-14 02:58:11,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:58:11,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-14 02:58:11,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:11,656 INFO L225 Difference]: With dead ends: 285 [2024-11-14 02:58:11,656 INFO L226 Difference]: Without dead ends: 145 [2024-11-14 02:58:11,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:58:11,668 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 3 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:11,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 596 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:58:11,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-14 02:58:11,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-14 02:58:11,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 108 states have (on average 1.4907407407407407) internal successors, (161), 108 states have internal predecessors, (161), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-14 02:58:11,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 219 transitions. [2024-11-14 02:58:11,759 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 219 transitions. Word has length 19 [2024-11-14 02:58:11,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:11,760 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 219 transitions. [2024-11-14 02:58:11,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 02:58:11,760 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 219 transitions. [2024-11-14 02:58:11,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-14 02:58:11,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:11,763 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:11,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 02:58:11,763 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:11,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:11,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1029885912, now seen corresponding path program 1 times [2024-11-14 02:58:11,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:11,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821471547] [2024-11-14 02:58:11,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:11,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:58:12,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:12,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821471547] [2024-11-14 02:58:12,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821471547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:12,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:12,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:58:12,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628771951] [2024-11-14 02:58:12,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:12,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:58:12,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:12,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:58:12,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:58:12,094 INFO L87 Difference]: Start difference. First operand 145 states and 219 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:58:12,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:12,371 INFO L93 Difference]: Finished difference Result 315 states and 475 transitions. [2024-11-14 02:58:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:58:12,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2024-11-14 02:58:12,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:12,375 INFO L225 Difference]: With dead ends: 315 [2024-11-14 02:58:12,376 INFO L226 Difference]: Without dead ends: 173 [2024-11-14 02:58:12,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:58:12,381 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 294 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:12,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 545 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:58:12,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-14 02:58:12,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 171. [2024-11-14 02:58:12,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 132 states have (on average 1.4848484848484849) internal successors, (196), 132 states have internal predecessors, (196), 30 states have call successors, (30), 8 states have call predecessors, (30), 8 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-14 02:58:12,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 256 transitions. [2024-11-14 02:58:12,421 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 256 transitions. Word has length 30 [2024-11-14 02:58:12,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:12,421 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 256 transitions. [2024-11-14 02:58:12,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:58:12,422 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 256 transitions. [2024-11-14 02:58:12,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 02:58:12,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:12,423 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:12,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 02:58:12,423 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:12,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:12,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1488090790, now seen corresponding path program 1 times [2024-11-14 02:58:12,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:12,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420191038] [2024-11-14 02:58:12,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:12,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:12,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:58:12,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:12,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420191038] [2024-11-14 02:58:12,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420191038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:12,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:12,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:58:12,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582344481] [2024-11-14 02:58:12,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:12,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:58:12,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:12,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:58:12,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:58:12,677 INFO L87 Difference]: Start difference. First operand 171 states and 256 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:58:12,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:12,902 INFO L93 Difference]: Finished difference Result 314 states and 472 transitions. [2024-11-14 02:58:12,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:58:12,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2024-11-14 02:58:12,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:12,907 INFO L225 Difference]: With dead ends: 314 [2024-11-14 02:58:12,907 INFO L226 Difference]: Without dead ends: 172 [2024-11-14 02:58:12,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:58:12,909 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 289 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:12,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 548 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:58:12,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-14 02:58:12,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2024-11-14 02:58:12,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 132 states have (on average 1.4772727272727273) internal successors, (195), 132 states have internal predecessors, (195), 30 states have call successors, (30), 8 states have call predecessors, (30), 8 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-14 02:58:12,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 255 transitions. [2024-11-14 02:58:12,946 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 255 transitions. Word has length 31 [2024-11-14 02:58:12,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:12,946 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 255 transitions. [2024-11-14 02:58:12,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 02:58:12,947 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 255 transitions. [2024-11-14 02:58:12,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 02:58:12,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:12,948 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:12,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 02:58:12,949 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:12,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:12,950 INFO L85 PathProgramCache]: Analyzing trace with hash -593113176, now seen corresponding path program 1 times [2024-11-14 02:58:12,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:12,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123741682] [2024-11-14 02:58:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:12,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:13,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:58:13,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:13,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123741682] [2024-11-14 02:58:13,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123741682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:13,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:13,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:58:13,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387822795] [2024-11-14 02:58:13,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:13,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:58:13,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:13,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:58:13,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:58:13,257 INFO L87 Difference]: Start difference. First operand 171 states and 255 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 02:58:13,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:13,352 INFO L93 Difference]: Finished difference Result 318 states and 477 transitions. [2024-11-14 02:58:13,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:58:13,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2024-11-14 02:58:13,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:13,355 INFO L225 Difference]: With dead ends: 318 [2024-11-14 02:58:13,355 INFO L226 Difference]: Without dead ends: 176 [2024-11-14 02:58:13,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:58:13,357 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 4 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:13,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 608 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:58:13,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-14 02:58:13,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-11-14 02:58:13,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 136 states have (on average 1.463235294117647) internal successors, (199), 136 states have internal predecessors, (199), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-14 02:58:13,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 259 transitions. [2024-11-14 02:58:13,386 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 259 transitions. Word has length 33 [2024-11-14 02:58:13,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:13,387 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 259 transitions. [2024-11-14 02:58:13,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 02:58:13,387 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 259 transitions. [2024-11-14 02:58:13,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-14 02:58:13,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:13,388 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:13,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 02:58:13,388 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:13,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:13,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2094577838, now seen corresponding path program 1 times [2024-11-14 02:58:13,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:13,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007971730] [2024-11-14 02:58:13,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:13,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:58:13,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:13,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007971730] [2024-11-14 02:58:13,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007971730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:13,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:13,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:58:13,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084643788] [2024-11-14 02:58:13,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:13,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:58:13,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:13,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:58:13,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:58:13,751 INFO L87 Difference]: Start difference. First operand 176 states and 259 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-14 02:58:13,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:13,877 INFO L93 Difference]: Finished difference Result 328 states and 488 transitions. [2024-11-14 02:58:13,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:58:13,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2024-11-14 02:58:13,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:13,880 INFO L225 Difference]: With dead ends: 328 [2024-11-14 02:58:13,881 INFO L226 Difference]: Without dead ends: 181 [2024-11-14 02:58:13,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:58:13,883 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 4 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:13,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 594 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:58:13,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-14 02:58:13,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-11-14 02:58:13,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 140 states have (on average 1.45) internal successors, (203), 140 states have internal predecessors, (203), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-14 02:58:13,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 263 transitions. [2024-11-14 02:58:13,917 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 263 transitions. Word has length 41 [2024-11-14 02:58:13,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:13,919 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 263 transitions. [2024-11-14 02:58:13,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-14 02:58:13,920 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 263 transitions. [2024-11-14 02:58:13,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-14 02:58:13,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:13,923 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:13,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 02:58:13,923 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:13,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:13,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1421443672, now seen corresponding path program 1 times [2024-11-14 02:58:13,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:13,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046136639] [2024-11-14 02:58:13,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:13,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:58:14,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:14,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046136639] [2024-11-14 02:58:14,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046136639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:14,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:14,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:58:14,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473871475] [2024-11-14 02:58:14,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:14,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:58:14,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:14,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:58:14,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:58:14,182 INFO L87 Difference]: Start difference. First operand 181 states and 263 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-14 02:58:14,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:14,296 INFO L93 Difference]: Finished difference Result 337 states and 492 transitions. [2024-11-14 02:58:14,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:58:14,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 49 [2024-11-14 02:58:14,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:14,299 INFO L225 Difference]: With dead ends: 337 [2024-11-14 02:58:14,301 INFO L226 Difference]: Without dead ends: 185 [2024-11-14 02:58:14,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:58:14,302 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 3 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:14,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 604 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:58:14,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-14 02:58:14,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2024-11-14 02:58:14,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 143 states have (on average 1.4405594405594406) internal successors, (206), 143 states have internal predecessors, (206), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-14 02:58:14,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 266 transitions. [2024-11-14 02:58:14,332 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 266 transitions. Word has length 49 [2024-11-14 02:58:14,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:14,332 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 266 transitions. [2024-11-14 02:58:14,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-14 02:58:14,333 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 266 transitions. [2024-11-14 02:58:14,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-14 02:58:14,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:14,336 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:14,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 02:58:14,336 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:14,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:14,337 INFO L85 PathProgramCache]: Analyzing trace with hash -477064321, now seen corresponding path program 1 times [2024-11-14 02:58:14,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:14,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320661943] [2024-11-14 02:58:14,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:14,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:14,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:58:14,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:14,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320661943] [2024-11-14 02:58:14,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320661943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:14,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:14,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:58:14,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656609388] [2024-11-14 02:58:14,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:14,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:58:14,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:14,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:58:14,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:58:14,617 INFO L87 Difference]: Start difference. First operand 185 states and 266 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-14 02:58:14,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:14,728 INFO L93 Difference]: Finished difference Result 346 states and 502 transitions. [2024-11-14 02:58:14,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:58:14,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 49 [2024-11-14 02:58:14,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:14,731 INFO L225 Difference]: With dead ends: 346 [2024-11-14 02:58:14,731 INFO L226 Difference]: Without dead ends: 190 [2024-11-14 02:58:14,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:58:14,732 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 4 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:14,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 594 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:58:14,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-14 02:58:14,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2024-11-14 02:58:14,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 147 states have (on average 1.4285714285714286) internal successors, (210), 147 states have internal predecessors, (210), 30 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-14 02:58:14,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 270 transitions. [2024-11-14 02:58:14,747 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 270 transitions. Word has length 49 [2024-11-14 02:58:14,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:14,749 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 270 transitions. [2024-11-14 02:58:14,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-14 02:58:14,749 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 270 transitions. [2024-11-14 02:58:14,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-14 02:58:14,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:14,753 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:14,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 02:58:14,753 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:14,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:14,754 INFO L85 PathProgramCache]: Analyzing trace with hash -2077206013, now seen corresponding path program 1 times [2024-11-14 02:58:14,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:14,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763468920] [2024-11-14 02:58:14,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:14,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 02:58:15,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:15,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763468920] [2024-11-14 02:58:15,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763468920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:15,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:15,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:58:15,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185530467] [2024-11-14 02:58:15,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:15,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:58:15,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:15,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:58:15,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:58:15,031 INFO L87 Difference]: Start difference. First operand 190 states and 270 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-14 02:58:15,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:15,133 INFO L93 Difference]: Finished difference Result 357 states and 509 transitions. [2024-11-14 02:58:15,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:58:15,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 57 [2024-11-14 02:58:15,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:15,136 INFO L225 Difference]: With dead ends: 357 [2024-11-14 02:58:15,138 INFO L226 Difference]: Without dead ends: 196 [2024-11-14 02:58:15,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:58:15,142 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 5 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:15,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 606 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:58:15,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-14 02:58:15,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2024-11-14 02:58:15,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 152 states have (on average 1.4144736842105263) internal successors, (215), 152 states have internal predecessors, (215), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-14 02:58:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 275 transitions. [2024-11-14 02:58:15,162 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 275 transitions. Word has length 57 [2024-11-14 02:58:15,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:15,163 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 275 transitions. [2024-11-14 02:58:15,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-14 02:58:15,164 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 275 transitions. [2024-11-14 02:58:15,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-14 02:58:15,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:15,165 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:15,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 02:58:15,166 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:15,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:15,167 INFO L85 PathProgramCache]: Analyzing trace with hash -817340407, now seen corresponding path program 1 times [2024-11-14 02:58:15,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:15,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342540058] [2024-11-14 02:58:15,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:15,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:16,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 02:58:16,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:16,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342540058] [2024-11-14 02:58:16,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342540058] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:16,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980094302] [2024-11-14 02:58:16,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:16,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:16,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:16,195 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:16,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 02:58:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:16,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 02:58:16,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:16,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:58:16,619 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:58:16,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980094302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:16,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:58:16,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 12 [2024-11-14 02:58:16,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781762092] [2024-11-14 02:58:16,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:16,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:58:16,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:16,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:58:16,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-14 02:58:16,622 INFO L87 Difference]: Start difference. First operand 196 states and 275 transitions. Second operand has 6 states, 4 states have (on average 11.25) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-14 02:58:16,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:16,952 INFO L93 Difference]: Finished difference Result 569 states and 790 transitions. [2024-11-14 02:58:16,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 02:58:16,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 11.25) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 60 [2024-11-14 02:58:16,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:16,956 INFO L225 Difference]: With dead ends: 569 [2024-11-14 02:58:16,956 INFO L226 Difference]: Without dead ends: 376 [2024-11-14 02:58:16,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-14 02:58:16,960 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 205 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:16,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 982 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:58:16,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-11-14 02:58:16,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 372. [2024-11-14 02:58:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 286 states have (on average 1.4055944055944056) internal successors, (402), 287 states have internal predecessors, (402), 59 states have call successors, (59), 26 states have call predecessors, (59), 26 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2024-11-14 02:58:16,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 520 transitions. [2024-11-14 02:58:17,000 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 520 transitions. Word has length 60 [2024-11-14 02:58:17,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:17,000 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 520 transitions. [2024-11-14 02:58:17,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 11.25) internal successors, (45), 6 states have internal predecessors, (45), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-14 02:58:17,001 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 520 transitions. [2024-11-14 02:58:17,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-14 02:58:17,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:17,002 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:17,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 02:58:17,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:17,207 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:17,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:17,208 INFO L85 PathProgramCache]: Analyzing trace with hash 134214124, now seen corresponding path program 1 times [2024-11-14 02:58:17,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:17,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373129837] [2024-11-14 02:58:17,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:17,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:18,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 02:58:18,025 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:18,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373129837] [2024-11-14 02:58:18,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373129837] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:18,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542378107] [2024-11-14 02:58:18,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:18,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:18,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:18,028 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:18,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 02:58:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:18,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 02:58:18,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:18,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:58:18,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:58:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 02:58:19,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542378107] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:58:19,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [162819104] [2024-11-14 02:58:19,081 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2024-11-14 02:58:19,081 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:58:19,084 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:58:19,090 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:58:19,090 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:58:26,997 INFO L197 IcfgInterpreter]: Interpreting procedure read_active_side_history with input of size 14 for LOIs [2024-11-14 02:58:27,003 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2024-11-14 02:58:27,004 INFO L197 IcfgInterpreter]: Interpreting procedure read_side1_failed_history with input of size 22 for LOIs [2024-11-14 02:58:27,017 INFO L197 IcfgInterpreter]: Interpreting procedure assert with input of size 80 for LOIs [2024-11-14 02:58:27,140 INFO L197 IcfgInterpreter]: Interpreting procedure read_side2_failed_history with input of size 49 for LOIs [2024-11-14 02:58:27,176 INFO L197 IcfgInterpreter]: Interpreting procedure read_manual_selection_history with input of size 14 for LOIs [2024-11-14 02:58:27,195 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:58:40,000 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7210#(and (<= 0 ~side2Failed_History_0~0) (<= ~active_side_History_0~0 127) (= |assert_#in~arg| 0) (<= ~manual_selection_History_1~0 127) (<= ~side2Failed_History_0~0 1) (<= 0 ~side2Failed_History_2~0) (not (= 2 ~active_side_History_0~0)) (exists ((|v_ULTIMATE.start_check_#t~ret15#1_15| Int) (|v_ULTIMATE.start_check_~tmp___8~0#1_14| Int)) (and (= |v_ULTIMATE.start_check_#t~ret15#1_15| 0) (= ~side2Failed_History_1~0 0) (exists ((|v_ULTIMATE.start_check_#t~ret14#1_15| Int) (|v_ULTIMATE.start_check_~tmp___7~0#1_14| Int)) (and (<= |v_ULTIMATE.start_check_#t~ret14#1_15| 1) (not (= |v_ULTIMATE.start_check_#t~ret14#1_15| 0)) (= |v_ULTIMATE.start_check_~tmp___7~0#1_14| 1) (not (= (mod ~side1Failed_History_1~0 256) 0)) (not (= ~manual_selection_History_1~0 0)) (<= 0 |v_ULTIMATE.start_check_#t~ret14#1_15|))) (= |v_ULTIMATE.start_check_~tmp___8~0#1_14| 0))) (<= 0 (+ ~manual_selection_History_1~0 128)) (<= 0 (+ ~active_side_History_0~0 128)) (<= ~side2Failed_History_2~0 1))' at error location [2024-11-14 02:58:40,001 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 02:58:40,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:58:40,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-14 02:58:40,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004532850] [2024-11-14 02:58:40,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 02:58:40,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 02:58:40,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:40,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 02:58:40,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=3171, Unknown=0, NotChecked=0, Total=3422 [2024-11-14 02:58:40,006 INFO L87 Difference]: Start difference. First operand 372 states and 520 transitions. Second operand has 18 states, 13 states have (on average 6.769230769230769) internal successors, (88), 16 states have internal predecessors, (88), 6 states have call successors, (20), 3 states have call predecessors, (20), 8 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2024-11-14 02:58:40,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:40,983 INFO L93 Difference]: Finished difference Result 978 states and 1351 transitions. [2024-11-14 02:58:40,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 02:58:40,984 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 13 states have (on average 6.769230769230769) internal successors, (88), 16 states have internal predecessors, (88), 6 states have call successors, (20), 3 states have call predecessors, (20), 8 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 62 [2024-11-14 02:58:40,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:40,990 INFO L225 Difference]: With dead ends: 978 [2024-11-14 02:58:40,990 INFO L226 Difference]: Without dead ends: 654 [2024-11-14 02:58:40,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1249 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=317, Invalid=4375, Unknown=0, NotChecked=0, Total=4692 [2024-11-14 02:58:40,994 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 245 mSDsluCounter, 3663 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 3937 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:40,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 3937 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 02:58:40,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2024-11-14 02:58:41,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 486. [2024-11-14 02:58:41,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 366 states have (on average 1.3934426229508197) internal successors, (510), 368 states have internal predecessors, (510), 82 states have call successors, (82), 37 states have call predecessors, (82), 37 states have return successors, (82), 80 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-14 02:58:41,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 674 transitions. [2024-11-14 02:58:41,039 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 674 transitions. Word has length 62 [2024-11-14 02:58:41,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:41,040 INFO L471 AbstractCegarLoop]: Abstraction has 486 states and 674 transitions. [2024-11-14 02:58:41,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 13 states have (on average 6.769230769230769) internal successors, (88), 16 states have internal predecessors, (88), 6 states have call successors, (20), 3 states have call predecessors, (20), 8 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2024-11-14 02:58:41,040 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 674 transitions. [2024-11-14 02:58:41,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-14 02:58:41,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:41,041 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:41,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 02:58:41,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:41,242 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:41,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:41,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1390480228, now seen corresponding path program 1 times [2024-11-14 02:58:41,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:41,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610229125] [2024-11-14 02:58:41,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:41,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 02:58:41,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:41,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610229125] [2024-11-14 02:58:41,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610229125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:41,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:41,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:58:41,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224635946] [2024-11-14 02:58:41,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:41,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:58:41,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:41,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:58:41,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:58:41,418 INFO L87 Difference]: Start difference. First operand 486 states and 674 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-14 02:58:41,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:41,533 INFO L93 Difference]: Finished difference Result 930 states and 1293 transitions. [2024-11-14 02:58:41,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:58:41,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 66 [2024-11-14 02:58:41,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:41,537 INFO L225 Difference]: With dead ends: 930 [2024-11-14 02:58:41,537 INFO L226 Difference]: Without dead ends: 498 [2024-11-14 02:58:41,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:58:41,540 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 3 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:41,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 604 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:58:41,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2024-11-14 02:58:41,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 498. [2024-11-14 02:58:41,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 375 states have (on average 1.384) internal successors, (519), 377 states have internal predecessors, (519), 82 states have call successors, (82), 40 states have call predecessors, (82), 40 states have return successors, (82), 80 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-14 02:58:41,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 683 transitions. [2024-11-14 02:58:41,588 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 683 transitions. Word has length 66 [2024-11-14 02:58:41,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:41,589 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 683 transitions. [2024-11-14 02:58:41,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-14 02:58:41,590 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 683 transitions. [2024-11-14 02:58:41,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-14 02:58:41,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:41,591 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:41,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-14 02:58:41,591 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:41,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:41,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1555268891, now seen corresponding path program 1 times [2024-11-14 02:58:41,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:41,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138764018] [2024-11-14 02:58:41,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:41,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:41,701 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 02:58:41,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:41,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138764018] [2024-11-14 02:58:41,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138764018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:41,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:41,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:58:41,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064496515] [2024-11-14 02:58:41,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:41,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:58:41,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:41,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:58:41,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:58:41,703 INFO L87 Difference]: Start difference. First operand 498 states and 683 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-14 02:58:41,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:41,856 INFO L93 Difference]: Finished difference Result 1373 states and 1875 transitions. [2024-11-14 02:58:41,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:58:41,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2024-11-14 02:58:41,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:41,864 INFO L225 Difference]: With dead ends: 1373 [2024-11-14 02:58:41,864 INFO L226 Difference]: Without dead ends: 936 [2024-11-14 02:58:41,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:58:41,867 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 176 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:41,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 654 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:58:41,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2024-11-14 02:58:41,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 925. [2024-11-14 02:58:41,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 690 states have (on average 1.355072463768116) internal successors, (935), 695 states have internal predecessors, (935), 156 states have call successors, (156), 78 states have call predecessors, (156), 78 states have return successors, (156), 151 states have call predecessors, (156), 156 states have call successors, (156) [2024-11-14 02:58:41,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1247 transitions. [2024-11-14 02:58:41,961 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1247 transitions. Word has length 71 [2024-11-14 02:58:41,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:41,961 INFO L471 AbstractCegarLoop]: Abstraction has 925 states and 1247 transitions. [2024-11-14 02:58:41,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-14 02:58:41,962 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1247 transitions. [2024-11-14 02:58:41,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-14 02:58:41,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:41,963 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:41,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-14 02:58:41,963 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:41,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:41,963 INFO L85 PathProgramCache]: Analyzing trace with hash -708586870, now seen corresponding path program 1 times [2024-11-14 02:58:41,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:41,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368853288] [2024-11-14 02:58:41,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:41,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:42,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 02:58:42,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:42,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368853288] [2024-11-14 02:58:42,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368853288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:42,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:42,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 02:58:42,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26647151] [2024-11-14 02:58:42,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:42,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 02:58:42,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:42,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 02:58:42,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:58:42,606 INFO L87 Difference]: Start difference. First operand 925 states and 1247 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-14 02:58:43,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:43,241 INFO L93 Difference]: Finished difference Result 1940 states and 2591 transitions. [2024-11-14 02:58:43,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 02:58:43,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 71 [2024-11-14 02:58:43,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:43,250 INFO L225 Difference]: With dead ends: 1940 [2024-11-14 02:58:43,251 INFO L226 Difference]: Without dead ends: 1115 [2024-11-14 02:58:43,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-14 02:58:43,255 INFO L432 NwaCegarLoop]: 331 mSDtfsCounter, 372 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 1513 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:43,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 1513 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 02:58:43,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2024-11-14 02:58:43,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1015. [2024-11-14 02:58:43,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 755 states have (on average 1.3390728476821192) internal successors, (1011), 761 states have internal predecessors, (1011), 169 states have call successors, (169), 90 states have call predecessors, (169), 90 states have return successors, (169), 163 states have call predecessors, (169), 169 states have call successors, (169) [2024-11-14 02:58:43,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1349 transitions. [2024-11-14 02:58:43,362 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1349 transitions. Word has length 71 [2024-11-14 02:58:43,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:43,362 INFO L471 AbstractCegarLoop]: Abstraction has 1015 states and 1349 transitions. [2024-11-14 02:58:43,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-14 02:58:43,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1349 transitions. [2024-11-14 02:58:43,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-14 02:58:43,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:43,366 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:43,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-14 02:58:43,366 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:43,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:43,367 INFO L85 PathProgramCache]: Analyzing trace with hash -11855195, now seen corresponding path program 1 times [2024-11-14 02:58:43,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:43,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595666812] [2024-11-14 02:58:43,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:43,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:43,644 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-14 02:58:43,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:43,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595666812] [2024-11-14 02:58:43,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595666812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:43,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:43,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 02:58:43,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056521354] [2024-11-14 02:58:43,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:43,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:58:43,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:43,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:58:43,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:58:43,647 INFO L87 Difference]: Start difference. First operand 1015 states and 1349 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-14 02:58:43,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:43,903 INFO L93 Difference]: Finished difference Result 1347 states and 1862 transitions. [2024-11-14 02:58:43,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:58:43,903 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 73 [2024-11-14 02:58:43,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:43,914 INFO L225 Difference]: With dead ends: 1347 [2024-11-14 02:58:43,914 INFO L226 Difference]: Without dead ends: 1345 [2024-11-14 02:58:43,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:58:43,915 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 116 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:43,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1657 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:58:43,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2024-11-14 02:58:44,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1015. [2024-11-14 02:58:44,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 753 states have (on average 1.3399734395750331) internal successors, (1009), 760 states have internal predecessors, (1009), 170 states have call successors, (170), 91 states have call predecessors, (170), 91 states have return successors, (170), 163 states have call predecessors, (170), 170 states have call successors, (170) [2024-11-14 02:58:44,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1349 transitions. [2024-11-14 02:58:44,030 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1349 transitions. Word has length 73 [2024-11-14 02:58:44,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:44,030 INFO L471 AbstractCegarLoop]: Abstraction has 1015 states and 1349 transitions. [2024-11-14 02:58:44,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-14 02:58:44,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1349 transitions. [2024-11-14 02:58:44,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-14 02:58:44,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:44,036 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:44,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-14 02:58:44,036 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:44,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:44,036 INFO L85 PathProgramCache]: Analyzing trace with hash 699169584, now seen corresponding path program 1 times [2024-11-14 02:58:44,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:44,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688700831] [2024-11-14 02:58:44,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:44,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:44,657 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 02:58:44,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:44,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688700831] [2024-11-14 02:58:44,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688700831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:44,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:44,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 02:58:44,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340354219] [2024-11-14 02:58:44,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:44,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 02:58:44,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:44,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 02:58:44,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:58:44,660 INFO L87 Difference]: Start difference. First operand 1015 states and 1349 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-14 02:58:45,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:45,509 INFO L93 Difference]: Finished difference Result 2393 states and 3173 transitions. [2024-11-14 02:58:45,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 02:58:45,510 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2024-11-14 02:58:45,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:45,523 INFO L225 Difference]: With dead ends: 2393 [2024-11-14 02:58:45,523 INFO L226 Difference]: Without dead ends: 1624 [2024-11-14 02:58:45,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-14 02:58:45,527 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 579 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:45,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 1147 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 02:58:45,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2024-11-14 02:58:45,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1581. [2024-11-14 02:58:45,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1159 states have (on average 1.3261432269197584) internal successors, (1537), 1170 states have internal predecessors, (1537), 276 states have call successors, (276), 145 states have call predecessors, (276), 145 states have return successors, (276), 265 states have call predecessors, (276), 276 states have call successors, (276) [2024-11-14 02:58:45,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2089 transitions. [2024-11-14 02:58:45,744 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2089 transitions. Word has length 73 [2024-11-14 02:58:45,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:45,745 INFO L471 AbstractCegarLoop]: Abstraction has 1581 states and 2089 transitions. [2024-11-14 02:58:45,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-14 02:58:45,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2089 transitions. [2024-11-14 02:58:45,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-14 02:58:45,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:45,749 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:45,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-14 02:58:45,749 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:45,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:45,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1973393532, now seen corresponding path program 1 times [2024-11-14 02:58:45,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:45,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167477351] [2024-11-14 02:58:45,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:45,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:45,987 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-14 02:58:45,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:45,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167477351] [2024-11-14 02:58:45,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167477351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:45,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:45,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:58:45,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360163006] [2024-11-14 02:58:45,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:45,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:58:45,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:45,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:58:45,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:58:45,989 INFO L87 Difference]: Start difference. First operand 1581 states and 2089 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-14 02:58:46,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:46,266 INFO L93 Difference]: Finished difference Result 2736 states and 3628 transitions. [2024-11-14 02:58:46,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:58:46,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 76 [2024-11-14 02:58:46,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:46,278 INFO L225 Difference]: With dead ends: 2736 [2024-11-14 02:58:46,278 INFO L226 Difference]: Without dead ends: 1559 [2024-11-14 02:58:46,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:58:46,282 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 5 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:46,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 596 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:58:46,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2024-11-14 02:58:46,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1559. [2024-11-14 02:58:46,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1148 states have (on average 1.3005226480836236) internal successors, (1493), 1159 states have internal predecessors, (1493), 265 states have call successors, (265), 145 states have call predecessors, (265), 145 states have return successors, (265), 254 states have call predecessors, (265), 265 states have call successors, (265) [2024-11-14 02:58:46,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2023 transitions. [2024-11-14 02:58:46,507 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2023 transitions. Word has length 76 [2024-11-14 02:58:46,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:46,508 INFO L471 AbstractCegarLoop]: Abstraction has 1559 states and 2023 transitions. [2024-11-14 02:58:46,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-14 02:58:46,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2023 transitions. [2024-11-14 02:58:46,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-14 02:58:46,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:46,512 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:46,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-14 02:58:46,512 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:46,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:46,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1868890076, now seen corresponding path program 1 times [2024-11-14 02:58:46,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:46,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232223437] [2024-11-14 02:58:46,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:46,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:46,617 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 02:58:46,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:46,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232223437] [2024-11-14 02:58:46,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232223437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:46,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:46,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:58:46,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137814999] [2024-11-14 02:58:46,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:46,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:58:46,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:46,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:58:46,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:58:46,620 INFO L87 Difference]: Start difference. First operand 1559 states and 2023 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-14 02:58:47,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:47,000 INFO L93 Difference]: Finished difference Result 3565 states and 4644 transitions. [2024-11-14 02:58:47,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:58:47,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2024-11-14 02:58:47,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:47,015 INFO L225 Difference]: With dead ends: 3565 [2024-11-14 02:58:47,015 INFO L226 Difference]: Without dead ends: 2529 [2024-11-14 02:58:47,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:58:47,020 INFO L432 NwaCegarLoop]: 342 mSDtfsCounter, 175 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:47,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 871 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:58:47,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2024-11-14 02:58:47,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 2277. [2024-11-14 02:58:47,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 1672 states have (on average 1.2960526315789473) internal successors, (2167), 1688 states have internal predecessors, (2167), 392 states have call successors, (392), 212 states have call predecessors, (392), 212 states have return successors, (392), 376 states have call predecessors, (392), 392 states have call successors, (392) [2024-11-14 02:58:47,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 2951 transitions. [2024-11-14 02:58:47,312 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 2951 transitions. Word has length 75 [2024-11-14 02:58:47,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:47,312 INFO L471 AbstractCegarLoop]: Abstraction has 2277 states and 2951 transitions. [2024-11-14 02:58:47,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-14 02:58:47,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 2951 transitions. [2024-11-14 02:58:47,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-14 02:58:47,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:47,317 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:47,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-14 02:58:47,317 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:47,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:47,318 INFO L85 PathProgramCache]: Analyzing trace with hash 650573397, now seen corresponding path program 1 times [2024-11-14 02:58:47,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:47,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865746077] [2024-11-14 02:58:47,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:47,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:47,476 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 02:58:47,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:47,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865746077] [2024-11-14 02:58:47,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865746077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:58:47,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:58:47,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:58:47,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626691945] [2024-11-14 02:58:47,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:58:47,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:58:47,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:58:47,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:58:47,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:58:47,478 INFO L87 Difference]: Start difference. First operand 2277 states and 2951 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-14 02:58:47,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:58:47,824 INFO L93 Difference]: Finished difference Result 3833 states and 4978 transitions. [2024-11-14 02:58:47,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:58:47,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2024-11-14 02:58:47,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:58:47,838 INFO L225 Difference]: With dead ends: 3833 [2024-11-14 02:58:47,839 INFO L226 Difference]: Without dead ends: 1869 [2024-11-14 02:58:47,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:58:47,844 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 44 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:58:47,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 588 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:58:47,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2024-11-14 02:58:48,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1869. [2024-11-14 02:58:48,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1372 states have (on average 1.2959183673469388) internal successors, (1778), 1385 states have internal predecessors, (1778), 320 states have call successors, (320), 176 states have call predecessors, (320), 176 states have return successors, (320), 307 states have call predecessors, (320), 320 states have call successors, (320) [2024-11-14 02:58:48,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2418 transitions. [2024-11-14 02:58:48,099 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2418 transitions. Word has length 75 [2024-11-14 02:58:48,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:58:48,099 INFO L471 AbstractCegarLoop]: Abstraction has 1869 states and 2418 transitions. [2024-11-14 02:58:48,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-14 02:58:48,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2418 transitions. [2024-11-14 02:58:48,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-14 02:58:48,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:58:48,104 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:58:48,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-14 02:58:48,104 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:58:48,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:58:48,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1034498210, now seen corresponding path program 1 times [2024-11-14 02:58:48,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:58:48,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884454352] [2024-11-14 02:58:48,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:48,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:58:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:48,667 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 02:58:48,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:58:48,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884454352] [2024-11-14 02:58:48,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884454352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:58:48,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16816587] [2024-11-14 02:58:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:58:48,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:58:48,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:58:48,670 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:58:48,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 02:58:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:58:48,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 02:58:48,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:58:49,194 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 02:58:49,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:58:49,468 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-14 02:58:49,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16816587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:58:49,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [430799334] [2024-11-14 02:58:49,474 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2024-11-14 02:58:49,474 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:58:49,475 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:58:49,476 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:58:49,476 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:58:55,507 INFO L197 IcfgInterpreter]: Interpreting procedure read_active_side_history with input of size 23 for LOIs [2024-11-14 02:58:55,526 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2024-11-14 02:58:55,527 INFO L197 IcfgInterpreter]: Interpreting procedure read_side1_failed_history with input of size 16 for LOIs [2024-11-14 02:58:55,536 INFO L197 IcfgInterpreter]: Interpreting procedure read_manual_selection_history with input of size 14 for LOIs [2024-11-14 02:58:55,543 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:59:04,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [430799334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:59:04,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:59:04,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [8, 11, 9] total 52 [2024-11-14 02:59:04,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823680187] [2024-11-14 02:59:04,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:59:04,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 02:59:04,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:59:04,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 02:59:04,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2445, Unknown=0, NotChecked=0, Total=2652 [2024-11-14 02:59:04,455 INFO L87 Difference]: Start difference. First operand 1869 states and 2418 transitions. Second operand has 34 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 26 states have internal predecessors, (47), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-14 02:59:20,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:59:20,455 INFO L93 Difference]: Finished difference Result 4983 states and 6887 transitions. [2024-11-14 02:59:20,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-14 02:59:20,456 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 26 states have internal predecessors, (47), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 78 [2024-11-14 02:59:20,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:59:20,486 INFO L225 Difference]: With dead ends: 4983 [2024-11-14 02:59:20,486 INFO L226 Difference]: Without dead ends: 3296 [2024-11-14 02:59:20,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1230 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=358, Invalid=4612, Unknown=0, NotChecked=0, Total=4970 [2024-11-14 02:59:20,493 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 583 mSDsluCounter, 3292 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 3542 SdHoareTripleChecker+Invalid, 2795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-14 02:59:20,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 3542 Invalid, 2795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-14 02:59:20,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3296 states. [2024-11-14 02:59:21,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3296 to 2357. [2024-11-14 02:59:21,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2357 states, 1704 states have (on average 1.312206572769953) internal successors, (2236), 1725 states have internal predecessors, (2236), 468 states have call successors, (468), 184 states have call predecessors, (468), 184 states have return successors, (468), 447 states have call predecessors, (468), 468 states have call successors, (468) [2024-11-14 02:59:21,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 3172 transitions. [2024-11-14 02:59:21,078 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 3172 transitions. Word has length 78 [2024-11-14 02:59:21,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:59:21,079 INFO L471 AbstractCegarLoop]: Abstraction has 2357 states and 3172 transitions. [2024-11-14 02:59:21,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 26 states have internal predecessors, (47), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-14 02:59:21,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 3172 transitions. [2024-11-14 02:59:21,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-14 02:59:21,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:59:21,081 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:59:21,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 02:59:21,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:59:21,282 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:59:21,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:59:21,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1741685053, now seen corresponding path program 1 times [2024-11-14 02:59:21,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:59:21,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029132305] [2024-11-14 02:59:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:59:21,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:59:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:59:21,350 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 02:59:21,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:59:21,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029132305] [2024-11-14 02:59:21,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029132305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:59:21,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:59:21,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:59:21,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547252960] [2024-11-14 02:59:21,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:59:21,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:59:21,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:59:21,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:59:21,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:59:21,352 INFO L87 Difference]: Start difference. First operand 2357 states and 3172 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-14 02:59:21,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:59:21,889 INFO L93 Difference]: Finished difference Result 4531 states and 6117 transitions. [2024-11-14 02:59:21,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:59:21,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2024-11-14 02:59:21,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:59:21,903 INFO L225 Difference]: With dead ends: 4531 [2024-11-14 02:59:21,904 INFO L226 Difference]: Without dead ends: 2377 [2024-11-14 02:59:21,909 INFO L431 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 [2024-11-14 02:59:21,910 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 4 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:59:21,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 379 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:59:21,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2377 states. [2024-11-14 02:59:22,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2377 to 2362. [2024-11-14 02:59:22,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 1709 states have (on average 1.3112931538911645) internal successors, (2241), 1730 states have internal predecessors, (2241), 468 states have call successors, (468), 184 states have call predecessors, (468), 184 states have return successors, (468), 447 states have call predecessors, (468), 468 states have call successors, (468) [2024-11-14 02:59:22,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 3177 transitions. [2024-11-14 02:59:22,419 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 3177 transitions. Word has length 78 [2024-11-14 02:59:22,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:59:22,420 INFO L471 AbstractCegarLoop]: Abstraction has 2362 states and 3177 transitions. [2024-11-14 02:59:22,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-14 02:59:22,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 3177 transitions. [2024-11-14 02:59:22,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-14 02:59:22,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:59:22,422 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:59:22,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-14 02:59:22,424 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:59:22,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:59:22,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1257175098, now seen corresponding path program 1 times [2024-11-14 02:59:22,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:59:22,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341733475] [2024-11-14 02:59:22,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:59:22,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:59:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:59:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-14 02:59:22,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:59:22,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341733475] [2024-11-14 02:59:22,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341733475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:59:22,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:59:22,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:59:22,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029008016] [2024-11-14 02:59:22,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:59:22,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:59:22,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:59:22,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:59:22,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:59:22,561 INFO L87 Difference]: Start difference. First operand 2362 states and 3177 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-14 02:59:23,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:59:23,060 INFO L93 Difference]: Finished difference Result 4428 states and 5980 transitions. [2024-11-14 02:59:23,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:59:23,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2024-11-14 02:59:23,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:59:23,076 INFO L225 Difference]: With dead ends: 4428 [2024-11-14 02:59:23,076 INFO L226 Difference]: Without dead ends: 2217 [2024-11-14 02:59:23,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:59:23,083 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 34 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:59:23,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 590 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:59:23,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2217 states. [2024-11-14 02:59:23,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2217 to 2217. [2024-11-14 02:59:23,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2217 states, 1600 states have (on average 1.311875) internal successors, (2099), 1620 states have internal predecessors, (2099), 444 states have call successors, (444), 172 states have call predecessors, (444), 172 states have return successors, (444), 424 states have call predecessors, (444), 444 states have call successors, (444) [2024-11-14 02:59:23,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 2987 transitions. [2024-11-14 02:59:23,596 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 2987 transitions. Word has length 78 [2024-11-14 02:59:23,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:59:23,598 INFO L471 AbstractCegarLoop]: Abstraction has 2217 states and 2987 transitions. [2024-11-14 02:59:23,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-14 02:59:23,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 2987 transitions. [2024-11-14 02:59:23,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-14 02:59:23,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:59:23,600 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:59:23,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-14 02:59:23,601 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:59:23,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:59:23,601 INFO L85 PathProgramCache]: Analyzing trace with hash 678625377, now seen corresponding path program 1 times [2024-11-14 02:59:23,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:59:23,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755378578] [2024-11-14 02:59:23,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:59:23,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:59:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:59:24,254 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-14 02:59:24,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:59:24,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755378578] [2024-11-14 02:59:24,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755378578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:59:24,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353050749] [2024-11-14 02:59:24,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:59:24,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:59:24,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:59:24,257 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:59:24,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 02:59:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:59:24,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 02:59:24,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:59:24,645 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-14 02:59:24,647 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:59:24,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353050749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:59:24,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:59:24,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 15 [2024-11-14 02:59:24,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560138905] [2024-11-14 02:59:24,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:59:24,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 02:59:24,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:59:24,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 02:59:24,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-14 02:59:24,649 INFO L87 Difference]: Start difference. First operand 2217 states and 2987 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 3 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-14 02:59:25,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:59:25,763 INFO L93 Difference]: Finished difference Result 4236 states and 5739 transitions. [2024-11-14 02:59:25,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 02:59:25,763 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 3 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2024-11-14 02:59:25,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:59:25,802 INFO L225 Difference]: With dead ends: 4236 [2024-11-14 02:59:25,802 INFO L226 Difference]: Without dead ends: 2244 [2024-11-14 02:59:25,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2024-11-14 02:59:25,808 INFO L432 NwaCegarLoop]: 293 mSDtfsCounter, 375 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 02:59:25,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 1817 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 02:59:25,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2024-11-14 02:59:26,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 2217. [2024-11-14 02:59:26,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2217 states, 1600 states have (on average 1.303125) internal successors, (2085), 1620 states have internal predecessors, (2085), 444 states have call successors, (444), 172 states have call predecessors, (444), 172 states have return successors, (444), 424 states have call predecessors, (444), 444 states have call successors, (444) [2024-11-14 02:59:26,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 2973 transitions. [2024-11-14 02:59:26,526 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 2973 transitions. Word has length 85 [2024-11-14 02:59:26,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:59:26,526 INFO L471 AbstractCegarLoop]: Abstraction has 2217 states and 2973 transitions. [2024-11-14 02:59:26,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 3 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-14 02:59:26,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 2973 transitions. [2024-11-14 02:59:26,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-14 02:59:26,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:59:26,528 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:59:26,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 02:59:26,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:59:26,729 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:59:26,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:59:26,729 INFO L85 PathProgramCache]: Analyzing trace with hash 2057019280, now seen corresponding path program 1 times [2024-11-14 02:59:26,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:59:26,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960770594] [2024-11-14 02:59:26,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:59:26,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:59:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:59:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-14 02:59:27,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:59:27,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960770594] [2024-11-14 02:59:27,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960770594] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:59:27,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102004380] [2024-11-14 02:59:27,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:59:27,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:59:27,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:59:27,600 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:59:27,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 02:59:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:59:27,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-14 02:59:27,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:59:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-14 02:59:28,276 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:59:28,638 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-14 02:59:28,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102004380] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:59:28,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1706820141] [2024-11-14 02:59:28,641 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2024-11-14 02:59:28,641 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:59:28,642 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:59:28,642 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:59:28,642 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 02:59:36,540 INFO L197 IcfgInterpreter]: Interpreting procedure read_active_side_history with input of size 16 for LOIs [2024-11-14 02:59:36,545 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2024-11-14 02:59:36,546 INFO L197 IcfgInterpreter]: Interpreting procedure read_side1_failed_history with input of size 19 for LOIs [2024-11-14 02:59:36,561 INFO L197 IcfgInterpreter]: Interpreting procedure assert with input of size 44 for LOIs [2024-11-14 02:59:36,580 INFO L197 IcfgInterpreter]: Interpreting procedure read_side2_failed_history with input of size 135 for LOIs [2024-11-14 02:59:36,932 INFO L197 IcfgInterpreter]: Interpreting procedure read_manual_selection_history with input of size 68 for LOIs [2024-11-14 02:59:37,057 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 02:59:51,881 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '86748#(and (<= 0 ~side2Failed_History_0~0) (<= ~active_side_History_0~0 127) (= ~manual_selection_History_1~0 0) (= |assert_#in~arg| 0) (not (= ~active_side_History_0~0 1)) (<= 0 ~side2Failed_History_1~0) (<= ~side2Failed_History_1~0 1) (<= ~side2Failed_History_0~0 1) (<= 0 ~side2Failed_History_2~0) (exists ((|v_ULTIMATE.start_check_~tmp___12~0#1_19| Int) (|v_ULTIMATE.start_check_#t~ret19#1_21| Int)) (and (= |v_ULTIMATE.start_check_~tmp___12~0#1_19| 1) (<= 0 |v_ULTIMATE.start_check_#t~ret19#1_21|) (<= |v_ULTIMATE.start_check_#t~ret19#1_21| 1) (not (= |v_ULTIMATE.start_check_#t~ret19#1_21| 0)))) (= ~side2_written~0 0) (<= 0 (+ ~active_side_History_0~0 128)) (<= ~side2Failed_History_2~0 1))' at error location [2024-11-14 02:59:51,881 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 02:59:51,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:59:51,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 10] total 26 [2024-11-14 02:59:51,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198695314] [2024-11-14 02:59:51,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 02:59:51,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 02:59:51,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:59:51,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 02:59:51,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=5302, Unknown=0, NotChecked=0, Total=5700 [2024-11-14 02:59:51,884 INFO L87 Difference]: Start difference. First operand 2217 states and 2973 transitions. Second operand has 26 states, 21 states have (on average 5.857142857142857) internal successors, (123), 21 states have internal predecessors, (123), 6 states have call successors, (29), 4 states have call predecessors, (29), 10 states have return successors, (29), 9 states have call predecessors, (29), 6 states have call successors, (29) [2024-11-14 02:59:53,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:59:53,222 INFO L93 Difference]: Finished difference Result 4321 states and 5795 transitions. [2024-11-14 02:59:53,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-14 02:59:53,223 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 5.857142857142857) internal successors, (123), 21 states have internal predecessors, (123), 6 states have call successors, (29), 4 states have call predecessors, (29), 10 states have return successors, (29), 9 states have call predecessors, (29), 6 states have call successors, (29) Word has length 85 [2024-11-14 02:59:53,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:59:53,237 INFO L225 Difference]: With dead ends: 4321 [2024-11-14 02:59:53,238 INFO L226 Difference]: Without dead ends: 2259 [2024-11-14 02:59:53,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 185 SyntacticMatches, 5 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2831 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=508, Invalid=7148, Unknown=0, NotChecked=0, Total=7656 [2024-11-14 02:59:53,245 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 467 mSDsluCounter, 2029 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 02:59:53,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 2199 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 02:59:53,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2024-11-14 02:59:53,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 2196. [2024-11-14 02:59:53,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 1585 states have (on average 1.2996845425867507) internal successors, (2060), 1605 states have internal predecessors, (2060), 438 states have call successors, (438), 172 states have call predecessors, (438), 172 states have return successors, (438), 418 states have call predecessors, (438), 438 states have call successors, (438) [2024-11-14 02:59:53,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 2936 transitions. [2024-11-14 02:59:53,717 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 2936 transitions. Word has length 85 [2024-11-14 02:59:53,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:59:53,717 INFO L471 AbstractCegarLoop]: Abstraction has 2196 states and 2936 transitions. [2024-11-14 02:59:53,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 5.857142857142857) internal successors, (123), 21 states have internal predecessors, (123), 6 states have call successors, (29), 4 states have call predecessors, (29), 10 states have return successors, (29), 9 states have call predecessors, (29), 6 states have call successors, (29) [2024-11-14 02:59:53,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 2936 transitions. [2024-11-14 02:59:53,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-14 02:59:53,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:59:53,719 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:59:53,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 02:59:53,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:59:53,923 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:59:53,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:59:53,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1285629912, now seen corresponding path program 1 times [2024-11-14 02:59:53,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:59:53,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961454968] [2024-11-14 02:59:53,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:59:53,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:59:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:59:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-14 02:59:54,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:59:54,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961454968] [2024-11-14 02:59:54,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961454968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:59:54,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:59:54,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:59:54,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018121598] [2024-11-14 02:59:54,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:59:54,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:59:54,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:59:54,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:59:54,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:59:54,125 INFO L87 Difference]: Start difference. First operand 2196 states and 2936 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-14 02:59:54,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:59:54,673 INFO L93 Difference]: Finished difference Result 4132 states and 5580 transitions. [2024-11-14 02:59:54,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:59:54,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 92 [2024-11-14 02:59:54,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:59:54,688 INFO L225 Difference]: With dead ends: 4132 [2024-11-14 02:59:54,688 INFO L226 Difference]: Without dead ends: 2172 [2024-11-14 02:59:54,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:59:54,694 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 5 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:59:54,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 578 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:59:54,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2024-11-14 02:59:55,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 2172. [2024-11-14 02:59:55,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 1573 states have (on average 1.2790845518118246) internal successors, (2012), 1593 states have internal predecessors, (2012), 426 states have call successors, (426), 172 states have call predecessors, (426), 172 states have return successors, (426), 406 states have call predecessors, (426), 426 states have call successors, (426) [2024-11-14 02:59:55,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 2864 transitions. [2024-11-14 02:59:55,151 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 2864 transitions. Word has length 92 [2024-11-14 02:59:55,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:59:55,151 INFO L471 AbstractCegarLoop]: Abstraction has 2172 states and 2864 transitions. [2024-11-14 02:59:55,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-14 02:59:55,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 2864 transitions. [2024-11-14 02:59:55,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-14 02:59:55,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:59:55,154 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:59:55,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-14 02:59:55,154 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:59:55,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:59:55,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1333933892, now seen corresponding path program 1 times [2024-11-14 02:59:55,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:59:55,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950611901] [2024-11-14 02:59:55,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:59:55,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:59:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:59:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-14 02:59:55,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:59:55,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950611901] [2024-11-14 02:59:55,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950611901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:59:55,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:59:55,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:59:55,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133139148] [2024-11-14 02:59:55,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:59:55,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:59:55,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:59:55,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:59:55,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:59:55,379 INFO L87 Difference]: Start difference. First operand 2172 states and 2864 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-14 02:59:55,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:59:55,868 INFO L93 Difference]: Finished difference Result 4036 states and 5377 transitions. [2024-11-14 02:59:55,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:59:55,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 108 [2024-11-14 02:59:55,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:59:55,892 INFO L225 Difference]: With dead ends: 4036 [2024-11-14 02:59:55,892 INFO L226 Difference]: Without dead ends: 2148 [2024-11-14 02:59:55,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:59:55,898 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 5 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:59:55,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 566 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:59:55,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2024-11-14 02:59:56,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2073. [2024-11-14 02:59:56,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 1507 states have (on average 1.2554744525547445) internal successors, (1892), 1527 states have internal predecessors, (1892), 402 states have call successors, (402), 163 states have call predecessors, (402), 163 states have return successors, (402), 382 states have call predecessors, (402), 402 states have call successors, (402) [2024-11-14 02:59:56,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2696 transitions. [2024-11-14 02:59:56,317 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2696 transitions. Word has length 108 [2024-11-14 02:59:56,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:59:56,318 INFO L471 AbstractCegarLoop]: Abstraction has 2073 states and 2696 transitions. [2024-11-14 02:59:56,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-14 02:59:56,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2696 transitions. [2024-11-14 02:59:56,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-14 02:59:56,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:59:56,322 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:59:56,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-14 02:59:56,322 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:59:56,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:59:56,323 INFO L85 PathProgramCache]: Analyzing trace with hash -969318060, now seen corresponding path program 1 times [2024-11-14 02:59:56,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:59:56,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010663940] [2024-11-14 02:59:56,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:59:56,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:59:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:59:56,550 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-14 02:59:56,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:59:56,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010663940] [2024-11-14 02:59:56,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010663940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:59:56,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:59:56,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 02:59:56,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059552653] [2024-11-14 02:59:56,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:59:56,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:59:56,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:59:56,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:59:56,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:59:56,552 INFO L87 Difference]: Start difference. First operand 2073 states and 2696 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-14 02:59:57,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:59:57,042 INFO L93 Difference]: Finished difference Result 3808 states and 5014 transitions. [2024-11-14 02:59:57,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:59:57,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 124 [2024-11-14 02:59:57,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:59:57,058 INFO L225 Difference]: With dead ends: 3808 [2024-11-14 02:59:57,058 INFO L226 Difference]: Without dead ends: 2046 [2024-11-14 02:59:57,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:59:57,063 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 4 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:59:57,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 557 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:59:57,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2024-11-14 02:59:57,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1979. [2024-11-14 02:59:57,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1979 states, 1438 states have (on average 1.237134909596662) internal successors, (1779), 1458 states have internal predecessors, (1779), 385 states have call successors, (385), 155 states have call predecessors, (385), 155 states have return successors, (385), 365 states have call predecessors, (385), 385 states have call successors, (385) [2024-11-14 02:59:57,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 2549 transitions. [2024-11-14 02:59:57,488 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 2549 transitions. Word has length 124 [2024-11-14 02:59:57,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:59:57,490 INFO L471 AbstractCegarLoop]: Abstraction has 1979 states and 2549 transitions. [2024-11-14 02:59:57,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-14 02:59:57,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 2549 transitions. [2024-11-14 02:59:57,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-14 02:59:57,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:59:57,495 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:59:57,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-14 02:59:57,496 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 02:59:57,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:59:57,496 INFO L85 PathProgramCache]: Analyzing trace with hash 247922173, now seen corresponding path program 1 times [2024-11-14 02:59:57,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:59:57,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900396205] [2024-11-14 02:59:57,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:59:57,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:59:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:59:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-14 02:59:58,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:59:58,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900396205] [2024-11-14 02:59:58,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900396205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:59:58,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895844550] [2024-11-14 02:59:58,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:59:58,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:59:58,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:59:58,162 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:59:58,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 02:59:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:59:58,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 02:59:58,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:59:58,716 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 61 proven. 5 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-14 02:59:58,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:59:58,921 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-14 02:59:58,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895844550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:59:58,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [447797192] [2024-11-14 02:59:58,924 INFO L159 IcfgInterpreter]: Started Sifa with 86 locations of interest [2024-11-14 02:59:58,924 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 02:59:58,924 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 02:59:58,924 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 02:59:58,924 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:00:12,194 INFO L197 IcfgInterpreter]: Interpreting procedure read_active_side_history with input of size 18 for LOIs [2024-11-14 03:00:12,216 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2024-11-14 03:00:12,219 INFO L197 IcfgInterpreter]: Interpreting procedure read_side1_failed_history with input of size 20 for LOIs [2024-11-14 03:00:12,246 INFO L197 IcfgInterpreter]: Interpreting procedure assert with input of size 212 for LOIs [2024-11-14 03:00:12,788 INFO L197 IcfgInterpreter]: Interpreting procedure read_side2_failed_history with input of size 190 for LOIs [2024-11-14 03:00:15,073 INFO L197 IcfgInterpreter]: Interpreting procedure read_manual_selection_history with input of size 18 for LOIs [2024-11-14 03:00:15,088 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:01:04,773 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '121144#(and (<= 0 ~side2Failed_History_0~0) (exists ((|v_ULTIMATE.start_check_#t~ret25#1_20| Int) (|v_ULTIMATE.start_check_~tmp___14~0#1_19| Int) (|v_ULTIMATE.start_check_~tmp___15~0#1_19| Int)) (and (= |v_ULTIMATE.start_check_~tmp___15~0#1_19| |v_ULTIMATE.start_check_~tmp___14~0#1_19|) (<= 0 |v_ULTIMATE.start_check_#t~ret25#1_20|) (<= |v_ULTIMATE.start_check_#t~ret25#1_20| 1) (or (and (exists ((|v_ULTIMATE.start_check_~tmp___2~0#1_22| Int) (|v_ULTIMATE.start_check_#t~ret11#1_24| Int)) (and (<= 0 |v_ULTIMATE.start_check_#t~ret11#1_24|) (not (= |v_ULTIMATE.start_check_#t~ret11#1_24| 0)) (= |v_ULTIMATE.start_check_~tmp___2~0#1_22| 1) (<= |v_ULTIMATE.start_check_#t~ret11#1_24| 1))) (= ~s1p_new~0 ~nomsg~0) (not (= (mod ~side1Failed~0 256) 0)) (exists ((|v_ULTIMATE.start_check_~tmp___11~0#1_24| Int) (|v_ULTIMATE.start_check_#t~ret18#1_27| Int)) (and (= |v_ULTIMATE.start_check_~tmp___11~0#1_24| 1) (not (= |v_ULTIMATE.start_check_#t~ret18#1_27| 0)) (<= |v_ULTIMATE.start_check_#t~ret18#1_27| 1) (<= 0 |v_ULTIMATE.start_check_#t~ret18#1_27|))) (exists ((|v_ULTIMATE.start_check_#t~ret10#1_28| Int) (|v_ULTIMATE.start_check_~tmp___1~0#1_25| Int)) (and (= |v_ULTIMATE.start_check_#t~ret10#1_28| 0) (= |v_ULTIMATE.start_check_~tmp___1~0#1_25| 0))) (= ~nomsg~0 ~s1s1_new~0) (= ~nomsg~0 ~s2s1_new~0) (exists ((|v_ULTIMATE.start_check_#t~ret14#1_29| Int) (|v_ULTIMATE.start_check_~tmp___7~0#1_25| Int)) (and (= |v_ULTIMATE.start_check_~tmp___7~0#1_25| 0) (= |v_ULTIMATE.start_check_#t~ret14#1_29| 0))) (exists ((|v_ULTIMATE.start_Pendulum_prism_task_each_pals_period_~side1~2#1_32| Int) (|v_ULTIMATE.start_Pendulum_prism_task_each_pals_period_~side2~2#1_32| Int)) (and (not (= 1 |v_ULTIMATE.start_Pendulum_prism_task_each_pals_period_~side2~2#1_32|)) (not (= |v_ULTIMATE.start_Pendulum_prism_task_each_pals_period_~side1~2#1_32| 0)) (not (= |v_ULTIMATE.start_Pendulum_prism_task_each_pals_period_~side1~2#1_32| 1)) (or (and (= ~active_side_History_0~0 0) (not (= ~nomsg~0 |v_ULTIMATE.start_Pendulum_prism_task_each_pals_period_~side1~2#1_32|))) (and (or (and (not (= 0 |v_ULTIMATE.start_Pendulum_prism_task_each_pals_period_~side2~2#1_32|)) (= ~active_side_History_0~0 0)) (and (= 2 ~active_side_History_0~0) (= 0 |v_ULTIMATE.start_Pendulum_prism_task_each_pals_period_~side2~2#1_32|))) (= ~nomsg~0 |v_ULTIMATE.start_Pendulum_prism_task_each_pals_period_~side1~2#1_32|))))) (= (mod ~side2Failed~0 256) 0) (= ~nomsg~0 ~s2p_new~0) (= ~nomsg~0 ~cs1_new~0) (= ~nomsg~0 ~s2s2_new~0) (= ~nomsg~0 ~cs2_new~0) (= ~nomsg~0 ~s1s2_new~0) (exists ((|v_ULTIMATE.start_check_#t~ret24#1_20| Int)) (and (<= |v_ULTIMATE.start_check_#t~ret24#1_20| 1) (<= 0 |v_ULTIMATE.start_check_#t~ret24#1_20|) (or (and (= |v_ULTIMATE.start_check_#t~ret24#1_20| 0) (= |v_ULTIMATE.start_check_~tmp___14~0#1_19| 0)) (and (= |v_ULTIMATE.start_check_~tmp___14~0#1_19| 1) (not (= |v_ULTIMATE.start_check_#t~ret24#1_20| 0))))))) (and (exists ((|v_ULTIMATE.start_check_~tmp___2~0#1_22| Int) (|v_ULTIMATE.start_check_#t~ret11#1_24| Int)) (and (<= 0 |v_ULTIMATE.start_check_#t~ret11#1_24|) (not (= |v_ULTIMATE.start_check_#t~ret11#1_24| 0)) (= |v_ULTIMATE.start_check_~tmp___2~0#1_22| 1) (<= |v_ULTIMATE.start_check_#t~ret11#1_24| 1))) (= ~s1p_new~0 ~nomsg~0) (exists ((|v_ULTIMATE.start_check_~tmp___11~0#1_24| Int) (|v_ULTIMATE.start_check_#t~ret18#1_27| Int)) (and (= |v_ULTIMATE.start_check_~tmp___11~0#1_24| 1) (not (= |v_ULTIMATE.start_check_#t~ret18#1_27| 0)) (<= |v_ULTIMATE.start_check_#t~ret18#1_27| 1) (<= 0 |v_ULTIMATE.start_check_#t~ret18#1_27|))) (exists ((|v_ULTIMATE.start_check_#t~ret10#1_28| Int) (|v_ULTIMATE.start_check_~tmp___1~0#1_25| Int)) (and (= |v_ULTIMATE.start_check_#t~ret10#1_28| 0) (= |v_ULTIMATE.start_check_~tmp___1~0#1_25| 0))) (= ~nomsg~0 ~s1s1_new~0) (= ~nomsg~0 ~s2s1_new~0) (exists ((|v_ULTIMATE.start_check_#t~ret14#1_29| Int) (|v_ULTIMATE.start_check_~tmp___7~0#1_25| Int)) (and (= |v_ULTIMATE.start_check_~tmp___7~0#1_25| 0) (= |v_ULTIMATE.start_check_#t~ret14#1_29| 0))) (exists ((|v_ULTIMATE.start_Pendulum_prism_task_each_pals_period_~side1~2#1_32| Int) (|v_ULTIMATE.start_Pendulum_prism_task_each_pals_period_~side2~2#1_32| Int)) (and (not (= 1 |v_ULTIMATE.start_Pendulum_prism_task_each_pals_period_~side2~2#1_32|)) (not (= |v_ULTIMATE.start_Pendulum_prism_task_each_pals_period_~side1~2#1_32| 0)) (not (= |v_ULTIMATE.start_Pendulum_prism_task_each_pals_period_~side1~2#1_32| 1)) (or (and (= ~active_side_History_0~0 0) (not (= ~nomsg~0 |v_ULTIMATE.start_Pendulum_prism_task_each_pals_period_~side1~2#1_32|))) (and (or (and (not (= 0 |v_ULTIMATE.start_Pendulum_prism_task_each_pals_period_~side2~2#1_32|)) (= ~active_side_History_0~0 0)) (and (= 2 ~active_side_History_0~0) (= 0 |v_ULTIMATE.start_Pendulum_prism_task_each_pals_period_~side2~2#1_32|))) (= ~nomsg~0 |v_ULTIMATE.start_Pendulum_prism_task_each_pals_period_~side1~2#1_32|))))) (= ~nomsg~0 ~s2p_new~0) (= ~nomsg~0 ~cs1_new~0) (= ~nomsg~0 ~s2s2_new~0) (= (mod ~side1Failed~0 256) 0) (= ~nomsg~0 ~cs2_new~0) (= ~nomsg~0 ~s1s2_new~0) (exists ((|v_ULTIMATE.start_check_#t~ret24#1_20| Int)) (and (<= |v_ULTIMATE.start_check_#t~ret24#1_20| 1) (<= 0 |v_ULTIMATE.start_check_#t~ret24#1_20|) (or (and (= |v_ULTIMATE.start_check_#t~ret24#1_20| 0) (= |v_ULTIMATE.start_check_~tmp___14~0#1_19| 0)) (and (= |v_ULTIMATE.start_check_~tmp___14~0#1_19| 1) (not (= |v_ULTIMATE.start_check_#t~ret24#1_20| 0)))))))) (or (and (= |v_ULTIMATE.start_check_#t~ret25#1_20| 0) (= |v_ULTIMATE.start_check_~tmp___15~0#1_19| 0)) (and (= |v_ULTIMATE.start_check_~tmp___15~0#1_19| 1) (not (= |v_ULTIMATE.start_check_#t~ret25#1_20| 0)))))) (= ~manual_selection_History_1~0 0) (= |assert_#in~arg| 0) (<= 0 ~side2Failed_History_1~0) (<= ~side2Failed_History_1~0 1) (<= ~side2Failed_History_0~0 1) (<= 0 ~side2Failed_History_2~0) (= ~side2_written~0 0) (= ~manual_selection_History_2~0 0) (exists ((|v_ULTIMATE.start_check_#t~ret26#1_20| Int) (|v_ULTIMATE.start_check_#t~ret27#1_20| Int) (|v_ULTIMATE.start_check_~tmp___16~0#1_19| Int) (|v_ULTIMATE.start_check_~tmp___17~0#1_19| Int)) (and (or (and (not (= |v_ULTIMATE.start_check_#t~ret27#1_20| 0)) (= |v_ULTIMATE.start_check_~tmp___17~0#1_19| 1)) (and (= |v_ULTIMATE.start_check_#t~ret27#1_20| 0) (= |v_ULTIMATE.start_check_~tmp___17~0#1_19| 0))) (= |v_ULTIMATE.start_check_~tmp___17~0#1_19| |v_ULTIMATE.start_check_~tmp___16~0#1_19|) (<= 0 |v_ULTIMATE.start_check_#t~ret27#1_20|) (<= |v_ULTIMATE.start_check_#t~ret27#1_20| 1) (<= |v_ULTIMATE.start_check_#t~ret26#1_20| 1) (or (and (= |v_ULTIMATE.start_check_~tmp___16~0#1_19| 1) (not (= |v_ULTIMATE.start_check_#t~ret26#1_20| 0))) (and (= |v_ULTIMATE.start_check_~tmp___16~0#1_19| 0) (= |v_ULTIMATE.start_check_#t~ret26#1_20| 0))) (<= 0 |v_ULTIMATE.start_check_#t~ret26#1_20|))) (exists ((|v_ULTIMATE.start_check_~tmp___19~0#1_19| Int) (|v_ULTIMATE.start_check_~tmp___18~0#1_19| Int)) (and (not (= |v_ULTIMATE.start_check_~tmp___18~0#1_19| |v_ULTIMATE.start_check_~tmp___19~0#1_19|)) (<= 0 (+ |v_ULTIMATE.start_check_~tmp___18~0#1_19| 128)) (<= 0 (+ 128 |v_ULTIMATE.start_check_~tmp___19~0#1_19|)) (<= |v_ULTIMATE.start_check_~tmp___18~0#1_19| 127) (<= |v_ULTIMATE.start_check_~tmp___19~0#1_19| 127))) (<= ~side2Failed_History_2~0 1))' at error location [2024-11-14 03:01:04,773 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:01:04,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:01:04,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2024-11-14 03:01:04,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360991757] [2024-11-14 03:01:04,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:01:04,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-14 03:01:04,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:01:04,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-14 03:01:04,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=6157, Unknown=0, NotChecked=0, Total=6642 [2024-11-14 03:01:04,776 INFO L87 Difference]: Start difference. First operand 1979 states and 2549 transitions. Second operand has 19 states, 14 states have (on average 11.214285714285714) internal successors, (157), 16 states have internal predecessors, (157), 8 states have call successors, (42), 4 states have call predecessors, (42), 9 states have return successors, (41), 8 states have call predecessors, (41), 8 states have call successors, (41) [2024-11-14 03:01:05,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:01:05,973 INFO L93 Difference]: Finished difference Result 4824 states and 6182 transitions. [2024-11-14 03:01:05,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-14 03:01:05,973 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 11.214285714285714) internal successors, (157), 16 states have internal predecessors, (157), 8 states have call successors, (42), 4 states have call predecessors, (42), 9 states have return successors, (41), 8 states have call predecessors, (41), 8 states have call successors, (41) Word has length 134 [2024-11-14 03:01:05,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:01:05,987 INFO L225 Difference]: With dead ends: 4824 [2024-11-14 03:01:05,987 INFO L226 Difference]: Without dead ends: 3012 [2024-11-14 03:01:05,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 317 SyntacticMatches, 16 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3204 ImplicationChecksByTransitivity, 50.2s TimeCoverageRelationStatistics Valid=586, Invalid=8726, Unknown=0, NotChecked=0, Total=9312 [2024-11-14 03:01:05,995 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 295 mSDsluCounter, 2612 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:01:05,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 2824 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:01:05,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2024-11-14 03:01:06,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 2099. [2024-11-14 03:01:06,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2099 states, 1526 states have (on average 1.2300131061598951) internal successors, (1877), 1548 states have internal predecessors, (1877), 400 states have call successors, (400), 172 states have call predecessors, (400), 172 states have return successors, (400), 378 states have call predecessors, (400), 400 states have call successors, (400) [2024-11-14 03:01:06,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 2677 transitions. [2024-11-14 03:01:06,423 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 2677 transitions. Word has length 134 [2024-11-14 03:01:06,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:01:06,424 INFO L471 AbstractCegarLoop]: Abstraction has 2099 states and 2677 transitions. [2024-11-14 03:01:06,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 11.214285714285714) internal successors, (157), 16 states have internal predecessors, (157), 8 states have call successors, (42), 4 states have call predecessors, (42), 9 states have return successors, (41), 8 states have call predecessors, (41), 8 states have call successors, (41) [2024-11-14 03:01:06,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 2677 transitions. [2024-11-14 03:01:06,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-14 03:01:06,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:01:06,429 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:01:06,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 03:01:06,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-14 03:01:06,630 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:01:06,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:01:06,631 INFO L85 PathProgramCache]: Analyzing trace with hash 946037318, now seen corresponding path program 1 times [2024-11-14 03:01:06,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:01:06,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500297121] [2024-11-14 03:01:06,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:06,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:01:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:07,037 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-14 03:01:07,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:01:07,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500297121] [2024-11-14 03:01:07,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500297121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:01:07,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536476298] [2024-11-14 03:01:07,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:07,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:01:07,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:01:07,040 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:01:07,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 03:01:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:07,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-14 03:01:07,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:01:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 67 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-14 03:01:08,155 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:01:09,157 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-14 03:01:09,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536476298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:01:09,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [561838268] [2024-11-14 03:01:09,159 INFO L159 IcfgInterpreter]: Started Sifa with 80 locations of interest [2024-11-14 03:01:09,159 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:01:09,159 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:01:09,160 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:01:09,160 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:01:19,336 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:01:19,350 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:01:19,487 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:01:23,056 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:01:23,062 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:01:23,076 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:01:23,702 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:01:24,516 INFO L197 IcfgInterpreter]: Interpreting procedure read_active_side_history with input of size 19 for LOIs [2024-11-14 03:01:24,536 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2024-11-14 03:01:24,562 INFO L197 IcfgInterpreter]: Interpreting procedure read_side1_failed_history with input of size 26 for LOIs [2024-11-14 03:01:24,583 INFO L197 IcfgInterpreter]: Interpreting procedure assert with input of size 149 for LOIs [2024-11-14 03:01:25,271 INFO L197 IcfgInterpreter]: Interpreting procedure read_side2_failed_history with input of size 70 for LOIs [2024-11-14 03:01:25,348 INFO L197 IcfgInterpreter]: Interpreting procedure read_manual_selection_history with input of size 20 for LOIs [2024-11-14 03:01:25,355 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:01:42,887 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '131488#(exists ((|v_ULTIMATE.start_check_~tmp~3#1_32| Int) (|v_ULTIMATE.start_main_~c1~0#1_BEFORE_CALL_12| Int)) (and (<= 0 ~side2Failed_History_0~0) (<= ~active_side_History_0~0 127) (= |assert_#in~arg| 0) (<= ~manual_selection_History_1~0 127) (= |v_ULTIMATE.start_check_~tmp~3#1_32| 1) (<= ~active_side_History_1~0 127) (exists ((|v_ULTIMATE.start_check_#t~ret15#1_28| Int) (|v_ULTIMATE.start_check_~tmp___8~0#1_26| Int)) (and (= ~side2Failed_History_1~0 0) (= |v_ULTIMATE.start_check_~tmp___8~0#1_26| 0) (= |v_ULTIMATE.start_check_#t~ret15#1_28| 0) (exists ((|v_ULTIMATE.start_check_~tmp___7~0#1_34| Int) (|v_ULTIMATE.start_check_#t~ret14#1_39| Int)) (and (= |v_ULTIMATE.start_check_~tmp___7~0#1_34| 1) (<= |v_ULTIMATE.start_check_#t~ret14#1_39| 1) (<= 0 |v_ULTIMATE.start_check_#t~ret14#1_39|) (not (= |v_ULTIMATE.start_check_#t~ret14#1_39| 0)))))) (<= ~side2Failed_History_0~0 1) (<= 0 ~side2Failed_History_2~0) (= |v_ULTIMATE.start_main_~c1~0#1_BEFORE_CALL_12| 0) (not (= 2 ~active_side_History_0~0)) (<= 0 (+ ~manual_selection_History_1~0 128)) (<= 0 (+ ~active_side_History_1~0 128)) (<= 0 (+ ~active_side_History_0~0 128)) (<= ~side2Failed_History_2~0 1)))' at error location [2024-11-14 03:01:42,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:01:42,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:01:42,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 17] total 32 [2024-11-14 03:01:42,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227800118] [2024-11-14 03:01:42,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:01:42,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-14 03:01:42,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:01:42,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-14 03:01:42,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=7691, Unknown=0, NotChecked=0, Total=8190 [2024-11-14 03:01:42,891 INFO L87 Difference]: Start difference. First operand 2099 states and 2677 transitions. Second operand has 32 states, 32 states have (on average 6.53125) internal successors, (209), 31 states have internal predecessors, (209), 11 states have call successors, (51), 5 states have call predecessors, (51), 7 states have return successors, (50), 12 states have call predecessors, (50), 11 states have call successors, (50) [2024-11-14 03:01:49,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:01:49,246 INFO L93 Difference]: Finished difference Result 5533 states and 7128 transitions. [2024-11-14 03:01:49,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-14 03:01:49,247 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.53125) internal successors, (209), 31 states have internal predecessors, (209), 11 states have call successors, (51), 5 states have call predecessors, (51), 7 states have return successors, (50), 12 states have call predecessors, (50), 11 states have call successors, (50) Word has length 144 [2024-11-14 03:01:49,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:01:49,262 INFO L225 Difference]: With dead ends: 5533 [2024-11-14 03:01:49,262 INFO L226 Difference]: Without dead ends: 3629 [2024-11-14 03:01:49,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 351 SyntacticMatches, 10 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7572 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=1595, Invalid=17311, Unknown=0, NotChecked=0, Total=18906 [2024-11-14 03:01:49,270 INFO L432 NwaCegarLoop]: 365 mSDtfsCounter, 3234 mSDsluCounter, 4123 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 1145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3234 SdHoareTripleChecker+Valid, 4488 SdHoareTripleChecker+Invalid, 3439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1145 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:01:49,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3234 Valid, 4488 Invalid, 3439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1145 Valid, 2294 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-14 03:01:49,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3629 states. [2024-11-14 03:01:50,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3629 to 3153. [2024-11-14 03:01:50,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3153 states, 2316 states have (on average 1.2158894645941278) internal successors, (2816), 2344 states have internal predecessors, (2816), 564 states have call successors, (564), 272 states have call predecessors, (564), 272 states have return successors, (564), 536 states have call predecessors, (564), 564 states have call successors, (564) [2024-11-14 03:01:50,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 3944 transitions. [2024-11-14 03:01:50,137 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 3944 transitions. Word has length 144 [2024-11-14 03:01:50,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:01:50,138 INFO L471 AbstractCegarLoop]: Abstraction has 3153 states and 3944 transitions. [2024-11-14 03:01:50,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.53125) internal successors, (209), 31 states have internal predecessors, (209), 11 states have call successors, (51), 5 states have call predecessors, (51), 7 states have return successors, (50), 12 states have call predecessors, (50), 11 states have call successors, (50) [2024-11-14 03:01:50,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 3944 transitions. [2024-11-14 03:01:50,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-14 03:01:50,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:01:50,145 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:01:50,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 03:01:50,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-14 03:01:50,346 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:01:50,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:01:50,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1630754363, now seen corresponding path program 1 times [2024-11-14 03:01:50,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:01:50,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722018821] [2024-11-14 03:01:50,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:50,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:01:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:50,582 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-14 03:01:50,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:01:50,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722018821] [2024-11-14 03:01:50,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722018821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:01:50,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:01:50,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 03:01:50,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656894866] [2024-11-14 03:01:50,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:01:50,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:01:50,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:01:50,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:01:50,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:01:50,585 INFO L87 Difference]: Start difference. First operand 3153 states and 3944 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-14 03:01:52,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:01:52,005 INFO L93 Difference]: Finished difference Result 7581 states and 9452 transitions. [2024-11-14 03:01:52,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 03:01:52,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2024-11-14 03:01:52,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:01:52,026 INFO L225 Difference]: With dead ends: 7581 [2024-11-14 03:01:52,027 INFO L226 Difference]: Without dead ends: 5162 [2024-11-14 03:01:52,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-14 03:01:52,034 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 180 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:01:52,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 1609 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:01:52,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5162 states. [2024-11-14 03:01:53,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5162 to 4334. [2024-11-14 03:01:53,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4334 states, 3169 states have (on average 1.209214263174503) internal successors, (3832), 3207 states have internal predecessors, (3832), 774 states have call successors, (774), 390 states have call predecessors, (774), 390 states have return successors, (774), 736 states have call predecessors, (774), 774 states have call successors, (774) [2024-11-14 03:01:53,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 5380 transitions. [2024-11-14 03:01:53,116 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 5380 transitions. Word has length 145 [2024-11-14 03:01:53,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:01:53,117 INFO L471 AbstractCegarLoop]: Abstraction has 4334 states and 5380 transitions. [2024-11-14 03:01:53,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-14 03:01:53,117 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 5380 transitions. [2024-11-14 03:01:53,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-14 03:01:53,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:01:53,126 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:01:53,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-14 03:01:53,127 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:01:53,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:01:53,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1526555872, now seen corresponding path program 1 times [2024-11-14 03:01:53,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:01:53,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760395429] [2024-11-14 03:01:53,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:53,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:01:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-14 03:01:54,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:01:54,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760395429] [2024-11-14 03:01:54,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760395429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:01:54,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508578324] [2024-11-14 03:01:54,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:01:54,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:01:54,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:01:54,241 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:01:54,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 03:01:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:01:54,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-14 03:01:54,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:01:55,306 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 59 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-14 03:01:55,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:01:55,941 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-14 03:01:55,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508578324] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:01:55,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [959017050] [2024-11-14 03:01:55,945 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2024-11-14 03:01:55,945 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:01:55,945 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:01:55,946 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:01:55,946 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:02:03,367 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:02:03,376 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:02:19,111 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:02:19,120 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:02:19,138 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:02:20,676 INFO L197 IcfgInterpreter]: Interpreting procedure read_active_side_history with input of size 68 for LOIs [2024-11-14 03:02:20,889 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2024-11-14 03:02:20,890 INFO L197 IcfgInterpreter]: Interpreting procedure read_side1_failed_history with input of size 6 for LOIs [2024-11-14 03:02:20,900 INFO L197 IcfgInterpreter]: Interpreting procedure assert with input of size 133 for LOIs [2024-11-14 03:02:21,352 INFO L197 IcfgInterpreter]: Interpreting procedure read_side2_failed_history with input of size 51 for LOIs [2024-11-14 03:02:21,394 INFO L197 IcfgInterpreter]: Interpreting procedure read_manual_selection_history with input of size 85 for LOIs [2024-11-14 03:02:21,854 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:02:44,854 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '160441#(exists ((|v_ULTIMATE.start_main_~c1~0#1_BEFORE_CALL_21| Int) (|v_ULTIMATE.start_check_~tmp~3#1_38| Int)) (and (<= ~active_side_History_0~0 127) (= |v_ULTIMATE.start_check_~tmp~3#1_38| 1) (= |assert_#in~arg| 0) (exists ((|v_ULTIMATE.start_check_#t~ret15#1_36| Int) (|v_ULTIMATE.start_check_~tmp___8~0#1_33| Int)) (and (= |v_ULTIMATE.start_check_~tmp___8~0#1_33| 0) (= |v_ULTIMATE.start_check_#t~ret15#1_36| 0) (exists ((|v_ULTIMATE.start_check_~tmp___7~0#1_44| Int) (|v_ULTIMATE.start_check_#t~ret14#1_49| Int)) (and (= |v_ULTIMATE.start_check_~tmp___7~0#1_44| 1) (<= |v_ULTIMATE.start_check_#t~ret14#1_49| 1) (not (= |v_ULTIMATE.start_check_#t~ret14#1_49| 0)) (<= 0 |v_ULTIMATE.start_check_#t~ret14#1_49|))) (= (mod ~side2Failed_History_1~0 256) 0))) (= |v_ULTIMATE.start_main_~c1~0#1_BEFORE_CALL_21| 0) (not (= 2 ~active_side_History_0~0)) (<= 0 (+ ~active_side_History_0~0 128))))' at error location [2024-11-14 03:02:44,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:02:44,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:02:44,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 10] total 27 [2024-11-14 03:02:44,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057052845] [2024-11-14 03:02:44,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:02:44,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-14 03:02:44,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:02:44,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-14 03:02:44,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=6963, Unknown=0, NotChecked=0, Total=7310 [2024-11-14 03:02:44,859 INFO L87 Difference]: Start difference. First operand 4334 states and 5380 transitions. Second operand has 27 states, 27 states have (on average 7.851851851851852) internal successors, (212), 27 states have internal predecessors, (212), 9 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (46), 9 states have call predecessors, (46), 9 states have call successors, (46) [2024-11-14 03:02:54,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:02:54,121 INFO L93 Difference]: Finished difference Result 11185 states and 13875 transitions. [2024-11-14 03:02:54,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-11-14 03:02:54,122 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 7.851851851851852) internal successors, (212), 27 states have internal predecessors, (212), 9 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (46), 9 states have call predecessors, (46), 9 states have call successors, (46) Word has length 147 [2024-11-14 03:02:54,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:02:54,157 INFO L225 Difference]: With dead ends: 11185 [2024-11-14 03:02:54,157 INFO L226 Difference]: Without dead ends: 7119 [2024-11-14 03:02:54,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 376 SyntacticMatches, 8 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8630 ImplicationChecksByTransitivity, 27.7s TimeCoverageRelationStatistics Valid=1278, Invalid=22284, Unknown=0, NotChecked=0, Total=23562 [2024-11-14 03:02:54,172 INFO L432 NwaCegarLoop]: 297 mSDtfsCounter, 1538 mSDsluCounter, 4259 mSDsCounter, 0 mSdLazyCounter, 3012 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 4556 SdHoareTripleChecker+Invalid, 3556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 3012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:02:54,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 4556 Invalid, 3556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 3012 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-14 03:02:54,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7119 states. [2024-11-14 03:02:56,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7119 to 6945. [2024-11-14 03:02:56,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6945 states, 5143 states have (on average 1.2074664592650204) internal successors, (6210), 5203 states have internal predecessors, (6210), 1166 states have call successors, (1166), 635 states have call predecessors, (1166), 635 states have return successors, (1166), 1106 states have call predecessors, (1166), 1166 states have call successors, (1166) [2024-11-14 03:02:56,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6945 states to 6945 states and 8542 transitions. [2024-11-14 03:02:56,028 INFO L78 Accepts]: Start accepts. Automaton has 6945 states and 8542 transitions. Word has length 147 [2024-11-14 03:02:56,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:02:56,028 INFO L471 AbstractCegarLoop]: Abstraction has 6945 states and 8542 transitions. [2024-11-14 03:02:56,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.851851851851852) internal successors, (212), 27 states have internal predecessors, (212), 9 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (46), 9 states have call predecessors, (46), 9 states have call successors, (46) [2024-11-14 03:02:56,028 INFO L276 IsEmpty]: Start isEmpty. Operand 6945 states and 8542 transitions. [2024-11-14 03:02:56,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-14 03:02:56,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:02:56,037 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:02:56,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 03:02:56,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:02:56,238 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:02:56,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:02:56,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1659861823, now seen corresponding path program 1 times [2024-11-14 03:02:56,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:02:56,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683867534] [2024-11-14 03:02:56,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:56,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:02:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:58,276 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-14 03:02:58,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:02:58,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683867534] [2024-11-14 03:02:58,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683867534] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:02:58,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214434228] [2024-11-14 03:02:58,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:58,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:02:58,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:02:58,279 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:02:58,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 03:02:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:58,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-14 03:02:58,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:03:00,056 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 6 proven. 76 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-14 03:03:00,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:03:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-14 03:03:01,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214434228] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:03:01,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [781749076] [2024-11-14 03:03:01,601 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2024-11-14 03:03:01,601 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:03:01,602 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:03:01,602 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:03:01,602 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:03:09,090 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:03:09,097 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:03:09,273 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:03:13,064 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:03:13,090 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:03:13,110 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:03:13,539 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:03:14,365 INFO L197 IcfgInterpreter]: Interpreting procedure read_active_side_history with input of size 19 for LOIs [2024-11-14 03:03:14,382 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2024-11-14 03:03:14,384 INFO L197 IcfgInterpreter]: Interpreting procedure read_side1_failed_history with input of size 21 for LOIs [2024-11-14 03:03:14,400 INFO L197 IcfgInterpreter]: Interpreting procedure assert with input of size 145 for LOIs [2024-11-14 03:03:15,028 INFO L197 IcfgInterpreter]: Interpreting procedure read_side2_failed_history with input of size 66 for LOIs [2024-11-14 03:03:15,094 INFO L197 IcfgInterpreter]: Interpreting procedure read_manual_selection_history with input of size 72 for LOIs [2024-11-14 03:03:15,236 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:03:39,267 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '186082#(exists ((|v_ULTIMATE.start_check_~tmp~3#1_44| Int) (|v_ULTIMATE.start_main_~c1~0#1_BEFORE_CALL_30| Int)) (and (<= 0 ~side2Failed_History_0~0) (<= ~active_side_History_0~0 127) (= |v_ULTIMATE.start_main_~c1~0#1_BEFORE_CALL_30| 0) (= |assert_#in~arg| 0) (<= ~active_side_History_1~0 127) (exists ((|v_ULTIMATE.start_check_~tmp___8~0#1_41| Int) (|v_ULTIMATE.start_check_#t~ret15#1_45| Int)) (and (= ~side2Failed_History_1~0 0) (exists ((|v_ULTIMATE.start_check_~tmp___7~0#1_54| Int) (|v_ULTIMATE.start_check_#t~ret14#1_59| Int)) (and (<= 0 |v_ULTIMATE.start_check_#t~ret14#1_59|) (not (= |v_ULTIMATE.start_check_#t~ret14#1_59| 0)) (= |v_ULTIMATE.start_check_~tmp___7~0#1_54| 1) (<= |v_ULTIMATE.start_check_#t~ret14#1_59| 1))) (= |v_ULTIMATE.start_check_#t~ret15#1_45| 0) (= |v_ULTIMATE.start_check_~tmp___8~0#1_41| 0))) (<= ~side2Failed_History_0~0 1) (<= 0 ~side2Failed_History_2~0) (not (= 2 ~active_side_History_0~0)) (= |v_ULTIMATE.start_check_~tmp~3#1_44| 1) (<= 0 (+ ~active_side_History_1~0 128)) (<= 0 (+ ~active_side_History_0~0 128)) (<= ~side2Failed_History_2~0 1)))' at error location [2024-11-14 03:03:39,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:03:39,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:03:39,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 39 [2024-11-14 03:03:39,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391889795] [2024-11-14 03:03:39,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:03:39,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-14 03:03:39,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:03:39,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-14 03:03:39,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=518, Invalid=9381, Unknown=1, NotChecked=0, Total=9900 [2024-11-14 03:03:39,272 INFO L87 Difference]: Start difference. First operand 6945 states and 8542 transitions. Second operand has 39 states, 39 states have (on average 5.769230769230769) internal successors, (225), 38 states have internal predecessors, (225), 13 states have call successors, (47), 7 states have call predecessors, (47), 10 states have return successors, (47), 13 states have call predecessors, (47), 12 states have call successors, (47) [2024-11-14 03:03:55,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:03:55,200 INFO L93 Difference]: Finished difference Result 18285 states and 22522 transitions. [2024-11-14 03:03:55,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2024-11-14 03:03:55,200 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.769230769230769) internal successors, (225), 38 states have internal predecessors, (225), 13 states have call successors, (47), 7 states have call predecessors, (47), 10 states have return successors, (47), 13 states have call predecessors, (47), 12 states have call successors, (47) Word has length 149 [2024-11-14 03:03:55,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:03:55,251 INFO L225 Difference]: With dead ends: 18285 [2024-11-14 03:03:55,251 INFO L226 Difference]: Without dead ends: 12268 [2024-11-14 03:03:55,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 382 SyntacticMatches, 10 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21760 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=3553, Invalid=50968, Unknown=1, NotChecked=0, Total=54522 [2024-11-14 03:03:55,278 INFO L432 NwaCegarLoop]: 455 mSDtfsCounter, 2276 mSDsluCounter, 6294 mSDsCounter, 0 mSdLazyCounter, 4954 mSolverCounterSat, 667 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2281 SdHoareTripleChecker+Valid, 6749 SdHoareTripleChecker+Invalid, 5621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 667 IncrementalHoareTripleChecker+Valid, 4954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:03:55,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2281 Valid, 6749 Invalid, 5621 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [667 Valid, 4954 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-14 03:03:55,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12268 states. [2024-11-14 03:03:58,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12268 to 8971. [2024-11-14 03:03:58,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8971 states, 6586 states have (on average 1.2074096568478592) internal successors, (7952), 6670 states have internal predecessors, (7952), 1578 states have call successors, (1578), 806 states have call predecessors, (1578), 806 states have return successors, (1578), 1494 states have call predecessors, (1578), 1578 states have call successors, (1578) [2024-11-14 03:03:58,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8971 states to 8971 states and 11108 transitions. [2024-11-14 03:03:58,171 INFO L78 Accepts]: Start accepts. Automaton has 8971 states and 11108 transitions. Word has length 149 [2024-11-14 03:03:58,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:03:58,171 INFO L471 AbstractCegarLoop]: Abstraction has 8971 states and 11108 transitions. [2024-11-14 03:03:58,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.769230769230769) internal successors, (225), 38 states have internal predecessors, (225), 13 states have call successors, (47), 7 states have call predecessors, (47), 10 states have return successors, (47), 13 states have call predecessors, (47), 12 states have call successors, (47) [2024-11-14 03:03:58,171 INFO L276 IsEmpty]: Start isEmpty. Operand 8971 states and 11108 transitions. [2024-11-14 03:03:58,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-14 03:03:58,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:03:58,182 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:03:58,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 03:03:58,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:03:58,382 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:03:58,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:03:58,383 INFO L85 PathProgramCache]: Analyzing trace with hash -364318459, now seen corresponding path program 1 times [2024-11-14 03:03:58,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:03:58,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143837468] [2024-11-14 03:03:58,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:03:58,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:03:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:03:59,391 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-14 03:03:59,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:03:59,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143837468] [2024-11-14 03:03:59,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143837468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:03:59,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020208058] [2024-11-14 03:03:59,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:03:59,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:03:59,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:03:59,395 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:03:59,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 03:03:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:03:59,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 03:03:59,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:04:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 25 proven. 57 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-14 03:04:00,089 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:04:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-14 03:04:00,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020208058] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:04:00,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1798115395] [2024-11-14 03:04:00,543 INFO L159 IcfgInterpreter]: Started Sifa with 81 locations of interest [2024-11-14 03:04:00,543 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:04:00,544 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:04:00,544 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:04:00,544 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:04:07,267 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:04:07,273 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:05:48,836 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:05:48,839 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:07:15,168 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:07:15,175 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:07:15,187 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:07:15,967 INFO L197 IcfgInterpreter]: Interpreting procedure read_active_side_history with input of size 84 for LOIs [2024-11-14 03:07:16,282 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2024-11-14 03:07:16,283 INFO L197 IcfgInterpreter]: Interpreting procedure read_side1_failed_history with input of size 20 for LOIs [2024-11-14 03:07:16,301 INFO L197 IcfgInterpreter]: Interpreting procedure assert with input of size 145 for LOIs [2024-11-14 03:07:16,794 INFO L197 IcfgInterpreter]: Interpreting procedure read_side2_failed_history with input of size 20 for LOIs [2024-11-14 03:07:16,801 INFO L197 IcfgInterpreter]: Interpreting procedure read_manual_selection_history with input of size 14 for LOIs [2024-11-14 03:07:16,806 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:07:29,717 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '224142#(exists ((|v_ULTIMATE.start_main_~c1~0#1_BEFORE_CALL_45| Int) (|v_ULTIMATE.start_check_~tmp~3#1_51| Int)) (and (<= 0 ~side2Failed_History_0~0) (<= ~active_side_History_0~0 127) (exists ((|v_ULTIMATE.start_check_~tmp___8~0#1_50| Int) (|v_ULTIMATE.start_check_#t~ret15#1_55| Int)) (and (= |v_ULTIMATE.start_check_~tmp___8~0#1_50| 0) (= ~side2Failed_History_1~0 0) (exists ((|v_ULTIMATE.start_check_~tmp___7~0#1_66| Int) (|v_ULTIMATE.start_check_#t~ret14#1_70| Int)) (and (= |v_ULTIMATE.start_check_~tmp___7~0#1_66| 1) (<= 0 |v_ULTIMATE.start_check_#t~ret14#1_70|) (not (= |v_ULTIMATE.start_check_#t~ret14#1_70| 0)) (<= |v_ULTIMATE.start_check_#t~ret14#1_70| 1))) (= |v_ULTIMATE.start_check_#t~ret15#1_55| 0))) (= |assert_#in~arg| 0) (<= ~manual_selection_History_1~0 127) (<= ~side2Failed_History_0~0 1) (<= 0 ~side2Failed_History_2~0) (= |v_ULTIMATE.start_check_~tmp~3#1_51| 1) (not (= 2 ~active_side_History_0~0)) (= |v_ULTIMATE.start_main_~c1~0#1_BEFORE_CALL_45| 0) (<= 0 (+ ~manual_selection_History_1~0 128)) (<= 0 (+ ~active_side_History_0~0 128)) (<= ~side2Failed_History_2~0 1)))' at error location [2024-11-14 03:07:29,718 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:07:29,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:07:29,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 22 [2024-11-14 03:07:29,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544087374] [2024-11-14 03:07:29,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:07:29,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-14 03:07:29,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:07:29,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-14 03:07:29,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=5986, Unknown=0, NotChecked=0, Total=6320 [2024-11-14 03:07:29,721 INFO L87 Difference]: Start difference. First operand 8971 states and 11108 transitions. Second operand has 22 states, 22 states have (on average 9.590909090909092) internal successors, (211), 18 states have internal predecessors, (211), 6 states have call successors, (51), 4 states have call predecessors, (51), 8 states have return successors, (50), 10 states have call predecessors, (50), 6 states have call successors, (50) [2024-11-14 03:07:35,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:07:35,959 INFO L93 Difference]: Finished difference Result 26480 states and 32549 transitions. [2024-11-14 03:07:35,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-14 03:07:35,959 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.590909090909092) internal successors, (211), 18 states have internal predecessors, (211), 6 states have call successors, (51), 4 states have call predecessors, (51), 8 states have return successors, (50), 10 states have call predecessors, (50), 6 states have call successors, (50) Word has length 152 [2024-11-14 03:07:35,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:07:36,036 INFO L225 Difference]: With dead ends: 26480 [2024-11-14 03:07:36,036 INFO L226 Difference]: Without dead ends: 17931 [2024-11-14 03:07:36,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 386 SyntacticMatches, 10 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5702 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=859, Invalid=14891, Unknown=0, NotChecked=0, Total=15750 [2024-11-14 03:07:36,060 INFO L432 NwaCegarLoop]: 404 mSDtfsCounter, 719 mSDsluCounter, 4824 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 5228 SdHoareTripleChecker+Invalid, 1911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:07:36,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 5228 Invalid, 1911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 03:07:36,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17931 states. [2024-11-14 03:07:39,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17931 to 14136. [2024-11-14 03:07:39,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14136 states, 10335 states have (on average 1.1931301402999517) internal successors, (12331), 10477 states have internal predecessors, (12331), 2496 states have call successors, (2496), 1304 states have call predecessors, (2496), 1304 states have return successors, (2496), 2354 states have call predecessors, (2496), 2496 states have call successors, (2496) [2024-11-14 03:07:39,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14136 states to 14136 states and 17323 transitions. [2024-11-14 03:07:39,512 INFO L78 Accepts]: Start accepts. Automaton has 14136 states and 17323 transitions. Word has length 152 [2024-11-14 03:07:39,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:07:39,512 INFO L471 AbstractCegarLoop]: Abstraction has 14136 states and 17323 transitions. [2024-11-14 03:07:39,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.590909090909092) internal successors, (211), 18 states have internal predecessors, (211), 6 states have call successors, (51), 4 states have call predecessors, (51), 8 states have return successors, (50), 10 states have call predecessors, (50), 6 states have call successors, (50) [2024-11-14 03:07:39,513 INFO L276 IsEmpty]: Start isEmpty. Operand 14136 states and 17323 transitions. [2024-11-14 03:07:39,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-14 03:07:39,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:07:39,523 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:07:39,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-14 03:07:39,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-14 03:07:39,727 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:07:39,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:07:39,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1943256537, now seen corresponding path program 1 times [2024-11-14 03:07:39,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:07:39,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107737282] [2024-11-14 03:07:39,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:07:39,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:07:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:07:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-14 03:07:40,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:07:40,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107737282] [2024-11-14 03:07:40,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107737282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:07:40,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580543125] [2024-11-14 03:07:40,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:07:40,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:07:40,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:07:40,538 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:07:40,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 03:07:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:07:40,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 03:07:40,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:07:41,013 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 31 proven. 74 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-14 03:07:41,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:07:41,332 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-14 03:07:41,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580543125] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:07:41,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [45056121] [2024-11-14 03:07:41,334 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2024-11-14 03:07:41,335 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:07:41,335 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:07:41,335 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:07:41,335 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:07:47,032 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:07:47,038 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:07:47,158 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:07:50,897 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:07:50,903 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:07:50,909 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:07:51,069 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:07:51,912 INFO L197 IcfgInterpreter]: Interpreting procedure read_active_side_history with input of size 16 for LOIs [2024-11-14 03:07:51,924 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2024-11-14 03:07:51,925 INFO L197 IcfgInterpreter]: Interpreting procedure read_side1_failed_history with input of size 21 for LOIs [2024-11-14 03:07:51,938 INFO L197 IcfgInterpreter]: Interpreting procedure assert with input of size 124 for LOIs [2024-11-14 03:07:52,534 INFO L197 IcfgInterpreter]: Interpreting procedure read_side2_failed_history with input of size 53 for LOIs [2024-11-14 03:07:52,563 INFO L197 IcfgInterpreter]: Interpreting procedure read_manual_selection_history with input of size 72 for LOIs [2024-11-14 03:07:52,685 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:08:10,170 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '280551#(exists ((|v_ULTIMATE.start_check_~tmp~3#1_57| Int) (|v_ULTIMATE.start_main_~c1~0#1_BEFORE_CALL_54| Int)) (and (<= 0 ~side2Failed_History_0~0) (<= ~active_side_History_0~0 127) (exists ((|v_ULTIMATE.start_check_~tmp___12~0#1_59| Int) (|v_ULTIMATE.start_check_#t~ret19#1_66| Int)) (and (exists ((|v_ULTIMATE.start_check_~tmp___7~0#1_75| Int) (|v_ULTIMATE.start_check_#t~ret14#1_80| Int)) (and (= |v_ULTIMATE.start_check_~tmp___7~0#1_75| 0) (= |v_ULTIMATE.start_check_#t~ret14#1_80| 0))) (not (= |v_ULTIMATE.start_check_#t~ret19#1_66| 0)) (<= |v_ULTIMATE.start_check_#t~ret19#1_66| 1) (exists ((|v_ULTIMATE.start_check_#t~ret18#1_71| Int) (|v_ULTIMATE.start_check_~tmp___11~0#1_62| Int)) (and (= |v_ULTIMATE.start_check_~tmp___11~0#1_62| 0) (= |v_ULTIMATE.start_check_#t~ret18#1_71| 0))) (<= 0 |v_ULTIMATE.start_check_#t~ret19#1_66|) (= |v_ULTIMATE.start_check_~tmp___12~0#1_59| 1) (not (= ~side2Failed_History_1~0 0)))) (= |assert_#in~arg| 0) (<= ~active_side_History_1~0 127) (not (= ~active_side_History_0~0 1)) (<= 0 ~side2Failed_History_1~0) (<= ~side2Failed_History_1~0 1) (<= ~side2Failed_History_0~0 1) (<= 0 ~side2Failed_History_2~0) (= |v_ULTIMATE.start_main_~c1~0#1_BEFORE_CALL_54| 0) (= |v_ULTIMATE.start_check_~tmp~3#1_57| 1) (<= 0 (+ ~active_side_History_1~0 128)) (<= 0 (+ ~active_side_History_0~0 128)) (<= ~side2Failed_History_2~0 1)))' at error location [2024-11-14 03:08:10,170 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:08:10,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:08:10,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 8] total 23 [2024-11-14 03:08:10,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337165379] [2024-11-14 03:08:10,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:08:10,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-14 03:08:10,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:08:10,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-14 03:08:10,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=6762, Unknown=1, NotChecked=0, Total=7140 [2024-11-14 03:08:10,173 INFO L87 Difference]: Start difference. First operand 14136 states and 17323 transitions. Second operand has 23 states, 23 states have (on average 9.565217391304348) internal successors, (220), 20 states have internal predecessors, (220), 9 states have call successors, (46), 4 states have call predecessors, (46), 8 states have return successors, (45), 12 states have call predecessors, (45), 9 states have call successors, (45) [2024-11-14 03:08:15,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:08:15,998 INFO L93 Difference]: Finished difference Result 32377 states and 39620 transitions. [2024-11-14 03:08:15,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-14 03:08:15,999 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 9.565217391304348) internal successors, (220), 20 states have internal predecessors, (220), 9 states have call successors, (46), 4 states have call predecessors, (46), 8 states have return successors, (45), 12 states have call predecessors, (45), 9 states have call successors, (45) Word has length 157 [2024-11-14 03:08:15,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:08:16,068 INFO L225 Difference]: With dead ends: 32377 [2024-11-14 03:08:16,069 INFO L226 Difference]: Without dead ends: 18769 [2024-11-14 03:08:16,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 393 SyntacticMatches, 9 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4391 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=659, Invalid=10896, Unknown=1, NotChecked=0, Total=11556 [2024-11-14 03:08:16,097 INFO L432 NwaCegarLoop]: 482 mSDtfsCounter, 819 mSDsluCounter, 5052 mSDsCounter, 0 mSdLazyCounter, 1662 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 5534 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:08:16,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 5534 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1662 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 03:08:16,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18769 states. [2024-11-14 03:08:20,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18769 to 17476. [2024-11-14 03:08:20,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17476 states, 12775 states have (on average 1.1823874755381605) internal successors, (15105), 12959 states have internal predecessors, (15105), 3042 states have call successors, (3042), 1658 states have call predecessors, (3042), 1658 states have return successors, (3042), 2858 states have call predecessors, (3042), 3042 states have call successors, (3042) [2024-11-14 03:08:20,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17476 states to 17476 states and 21189 transitions. [2024-11-14 03:08:20,242 INFO L78 Accepts]: Start accepts. Automaton has 17476 states and 21189 transitions. Word has length 157 [2024-11-14 03:08:20,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:08:20,242 INFO L471 AbstractCegarLoop]: Abstraction has 17476 states and 21189 transitions. [2024-11-14 03:08:20,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.565217391304348) internal successors, (220), 20 states have internal predecessors, (220), 9 states have call successors, (46), 4 states have call predecessors, (46), 8 states have return successors, (45), 12 states have call predecessors, (45), 9 states have call successors, (45) [2024-11-14 03:08:20,243 INFO L276 IsEmpty]: Start isEmpty. Operand 17476 states and 21189 transitions. [2024-11-14 03:08:20,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-14 03:08:20,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:08:20,249 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:08:20,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 03:08:20,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:08:20,450 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:08:20,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:08:20,450 INFO L85 PathProgramCache]: Analyzing trace with hash -156541570, now seen corresponding path program 1 times [2024-11-14 03:08:20,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:08:20,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572461551] [2024-11-14 03:08:20,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:08:20,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:08:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:08:21,036 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-14 03:08:21,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:08:21,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572461551] [2024-11-14 03:08:21,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572461551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:08:21,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:08:21,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 03:08:21,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620672275] [2024-11-14 03:08:21,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:08:21,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:08:21,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:08:21,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:08:21,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:08:21,038 INFO L87 Difference]: Start difference. First operand 17476 states and 21189 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-14 03:08:25,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:08:25,160 INFO L93 Difference]: Finished difference Result 33515 states and 40710 transitions. [2024-11-14 03:08:25,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:08:25,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 157 [2024-11-14 03:08:25,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:08:25,207 INFO L225 Difference]: With dead ends: 33515 [2024-11-14 03:08:25,207 INFO L226 Difference]: Without dead ends: 17466 [2024-11-14 03:08:25,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-14 03:08:25,230 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 508 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:08:25,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1091 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:08:25,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17466 states. [2024-11-14 03:08:28,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17466 to 17464. [2024-11-14 03:08:28,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17464 states, 12763 states have (on average 1.180678523858027) internal successors, (15069), 12947 states have internal predecessors, (15069), 3042 states have call successors, (3042), 1658 states have call predecessors, (3042), 1658 states have return successors, (3042), 2858 states have call predecessors, (3042), 3042 states have call successors, (3042) [2024-11-14 03:08:29,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17464 states to 17464 states and 21153 transitions. [2024-11-14 03:08:29,030 INFO L78 Accepts]: Start accepts. Automaton has 17464 states and 21153 transitions. Word has length 157 [2024-11-14 03:08:29,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:08:29,031 INFO L471 AbstractCegarLoop]: Abstraction has 17464 states and 21153 transitions. [2024-11-14 03:08:29,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-14 03:08:29,031 INFO L276 IsEmpty]: Start isEmpty. Operand 17464 states and 21153 transitions. [2024-11-14 03:08:29,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-14 03:08:29,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:08:29,038 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:08:29,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-14 03:08:29,038 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:08:29,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:08:29,038 INFO L85 PathProgramCache]: Analyzing trace with hash -300688177, now seen corresponding path program 1 times [2024-11-14 03:08:29,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:08:29,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262094055] [2024-11-14 03:08:29,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:08:29,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:08:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:08:29,581 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-14 03:08:29,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:08:29,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262094055] [2024-11-14 03:08:29,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262094055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:08:29,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796823674] [2024-11-14 03:08:29,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:08:29,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:08:29,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:08:29,583 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:08:29,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 03:08:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:08:29,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-14 03:08:29,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:08:30,267 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 75 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-14 03:08:30,268 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:08:30,881 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-14 03:08:30,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796823674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:08:30,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [544561732] [2024-11-14 03:08:30,883 INFO L159 IcfgInterpreter]: Started Sifa with 84 locations of interest [2024-11-14 03:08:30,883 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:08:30,884 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:08:30,884 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:08:30,884 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:08:34,540 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:08:34,544 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:08:40,933 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:08:40,944 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:08:40,956 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:08:41,767 INFO L197 IcfgInterpreter]: Interpreting procedure read_active_side_history with input of size 58 for LOIs [2024-11-14 03:08:41,844 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 8 for LOIs [2024-11-14 03:08:41,845 INFO L197 IcfgInterpreter]: Interpreting procedure read_side1_failed_history with input of size 17 for LOIs [2024-11-14 03:08:41,858 INFO L197 IcfgInterpreter]: Interpreting procedure assert with input of size 141 for LOIs [2024-11-14 03:08:42,095 INFO L197 IcfgInterpreter]: Interpreting procedure read_side2_failed_history with input of size 17 for LOIs [2024-11-14 03:08:42,108 INFO L197 IcfgInterpreter]: Interpreting procedure read_manual_selection_history with input of size 68 for LOIs [2024-11-14 03:08:42,226 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:08:59,235 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '419247#(exists ((|v_ULTIMATE.start_check_~tmp~3#1_63| Int) (|v_ULTIMATE.start_main_~c1~0#1_BEFORE_CALL_63| Int)) (and (exists ((|v_ULTIMATE.start_check_~tmp___6~0#1_44| Int) (|v_ULTIMATE.start_check_#t~ret17#1_45| Int)) (and (= |v_ULTIMATE.start_check_~tmp___6~0#1_44| 0) (= |v_ULTIMATE.start_check_#t~ret17#1_45| 0))) (<= 0 ~side2Failed_History_0~0) (exists ((|v_ULTIMATE.start_check_~tmp___7~0#1_85| Int) (|v_ULTIMATE.start_check_#t~ret14#1_90| Int)) (and (<= |v_ULTIMATE.start_check_#t~ret14#1_90| 1) (<= 0 |v_ULTIMATE.start_check_#t~ret14#1_90|) (not (= |v_ULTIMATE.start_check_#t~ret14#1_90| 0)) (= |v_ULTIMATE.start_check_~tmp___7~0#1_85| 1))) (= |assert_#in~arg| 0) (exists ((|v_ULTIMATE.start_check_~tmp___8~0#1_61| Int) (|v_ULTIMATE.start_check_#t~ret15#1_67| Int)) (and (= |v_ULTIMATE.start_check_~tmp___8~0#1_61| 0) (= |v_ULTIMATE.start_check_#t~ret15#1_67| 0))) (<= 0 ~side2Failed_History_1~0) (<= ~side2Failed_History_1~0 1) (<= ~side2Failed_History_0~0 1) (<= 0 ~side2Failed_History_2~0) (= |v_ULTIMATE.start_main_~c1~0#1_BEFORE_CALL_63| 0) (= 2 ~active_side_History_0~0) (= ~side2_written~0 0) (= |v_ULTIMATE.start_check_~tmp~3#1_63| 1) (<= ~side2Failed_History_2~0 1)))' at error location [2024-11-14 03:08:59,236 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:08:59,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:08:59,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 10] total 24 [2024-11-14 03:08:59,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245712100] [2024-11-14 03:08:59,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:08:59,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-14 03:08:59,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:08:59,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-14 03:08:59,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=507, Invalid=7325, Unknown=0, NotChecked=0, Total=7832 [2024-11-14 03:08:59,239 INFO L87 Difference]: Start difference. First operand 17464 states and 21153 transitions. Second operand has 24 states, 24 states have (on average 7.583333333333333) internal successors, (182), 24 states have internal predecessors, (182), 9 states have call successors, (39), 5 states have call predecessors, (39), 6 states have return successors, (38), 9 states have call predecessors, (38), 9 states have call successors, (38) [2024-11-14 03:09:05,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:09:05,735 INFO L93 Difference]: Finished difference Result 37899 states and 45919 transitions. [2024-11-14 03:09:05,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-14 03:09:05,736 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.583333333333333) internal successors, (182), 24 states have internal predecessors, (182), 9 states have call successors, (39), 5 states have call predecessors, (39), 6 states have return successors, (38), 9 states have call predecessors, (38), 9 states have call successors, (38) Word has length 157 [2024-11-14 03:09:05,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:09:05,796 INFO L225 Difference]: With dead ends: 37899 [2024-11-14 03:09:05,797 INFO L226 Difference]: Without dead ends: 20750 [2024-11-14 03:09:05,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 389 SyntacticMatches, 7 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4794 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=813, Invalid=11619, Unknown=0, NotChecked=0, Total=12432 [2024-11-14 03:09:05,819 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 939 mSDsluCounter, 2503 mSDsCounter, 0 mSdLazyCounter, 1811 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 2125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 1811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:09:05,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 2772 Invalid, 2125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 1811 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 03:09:05,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20750 states. [2024-11-14 03:09:10,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20750 to 20296. [2024-11-14 03:09:10,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20296 states, 14828 states have (on average 1.1799298624224441) internal successors, (17496), 15041 states have internal predecessors, (17496), 3528 states have call successors, (3528), 1939 states have call predecessors, (3528), 1939 states have return successors, (3528), 3315 states have call predecessors, (3528), 3528 states have call successors, (3528) [2024-11-14 03:09:10,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20296 states to 20296 states and 24552 transitions. [2024-11-14 03:09:10,405 INFO L78 Accepts]: Start accepts. Automaton has 20296 states and 24552 transitions. Word has length 157 [2024-11-14 03:09:10,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:09:10,405 INFO L471 AbstractCegarLoop]: Abstraction has 20296 states and 24552 transitions. [2024-11-14 03:09:10,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.583333333333333) internal successors, (182), 24 states have internal predecessors, (182), 9 states have call successors, (39), 5 states have call predecessors, (39), 6 states have return successors, (38), 9 states have call predecessors, (38), 9 states have call successors, (38) [2024-11-14 03:09:10,406 INFO L276 IsEmpty]: Start isEmpty. Operand 20296 states and 24552 transitions. [2024-11-14 03:09:10,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-14 03:09:10,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:09:10,412 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:09:10,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-14 03:09:10,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:09:10,613 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:09:10,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:09:10,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1817949010, now seen corresponding path program 1 times [2024-11-14 03:09:10,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:09:10,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169829241] [2024-11-14 03:09:10,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:09:10,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:09:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:09:10,731 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-14 03:09:10,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:09:10,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169829241] [2024-11-14 03:09:10,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169829241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:09:10,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:09:10,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:09:10,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614981819] [2024-11-14 03:09:10,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:09:10,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:09:10,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:09:10,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:09:10,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:09:10,738 INFO L87 Difference]: Start difference. First operand 20296 states and 24552 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-14 03:09:16,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:09:16,105 INFO L93 Difference]: Finished difference Result 42296 states and 51089 transitions. [2024-11-14 03:09:16,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:09:16,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2024-11-14 03:09:16,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:09:16,168 INFO L225 Difference]: With dead ends: 42296 [2024-11-14 03:09:16,168 INFO L226 Difference]: Without dead ends: 23694 [2024-11-14 03:09:16,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:09:16,192 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 166 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:09:16,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 881 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:09:16,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23694 states. [2024-11-14 03:09:21,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23694 to 21502. [2024-11-14 03:09:21,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21502 states, 15688 states have (on average 1.17637684854666) internal successors, (18455), 15921 states have internal predecessors, (18455), 3754 states have call successors, (3754), 2059 states have call predecessors, (3754), 2059 states have return successors, (3754), 3521 states have call predecessors, (3754), 3754 states have call successors, (3754) [2024-11-14 03:09:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21502 states to 21502 states and 25963 transitions. [2024-11-14 03:09:21,721 INFO L78 Accepts]: Start accepts. Automaton has 21502 states and 25963 transitions. Word has length 158 [2024-11-14 03:09:21,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:09:21,721 INFO L471 AbstractCegarLoop]: Abstraction has 21502 states and 25963 transitions. [2024-11-14 03:09:21,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-14 03:09:21,721 INFO L276 IsEmpty]: Start isEmpty. Operand 21502 states and 25963 transitions. [2024-11-14 03:09:21,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-14 03:09:21,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:09:21,728 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:09:21,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-14 03:09:21,729 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:09:21,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:09:21,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1368174317, now seen corresponding path program 1 times [2024-11-14 03:09:21,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:09:21,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357609960] [2024-11-14 03:09:21,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:09:21,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:09:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:09:23,188 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-14 03:09:23,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:09:23,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357609960] [2024-11-14 03:09:23,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357609960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:09:23,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955181637] [2024-11-14 03:09:23,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:09:23,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:09:23,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:09:23,191 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:09:23,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 03:09:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:09:23,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-14 03:09:23,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:09:24,028 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 75 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-14 03:09:24,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:09:24,460 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-14 03:09:24,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955181637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:09:24,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [429585091] [2024-11-14 03:09:24,462 INFO L159 IcfgInterpreter]: Started Sifa with 86 locations of interest [2024-11-14 03:09:24,462 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:09:24,462 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:09:24,462 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:09:24,462 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:09:28,023 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:09:28,027 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:09:36,629 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:09:36,632 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:09:36,639 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2024-11-14 03:09:37,727 INFO L197 IcfgInterpreter]: Interpreting procedure read_active_side_history with input of size 56 for LOIs [2024-11-14 03:09:37,797 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2024-11-14 03:09:37,798 INFO L197 IcfgInterpreter]: Interpreting procedure read_side1_failed_history with input of size 19 for LOIs [2024-11-14 03:09:37,811 INFO L197 IcfgInterpreter]: Interpreting procedure assert with input of size 142 for LOIs [2024-11-14 03:09:38,027 INFO L197 IcfgInterpreter]: Interpreting procedure read_side2_failed_history with input of size 15 for LOIs [2024-11-14 03:09:38,038 INFO L197 IcfgInterpreter]: Interpreting procedure read_manual_selection_history with input of size 66 for LOIs [2024-11-14 03:09:38,150 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:09:53,880 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '586930#(exists ((|v_ULTIMATE.start_check_~tmp~3#1_69| Int) (|v_ULTIMATE.start_main_~c1~0#1_BEFORE_CALL_72| Int)) (and (<= 0 ~side2Failed_History_0~0) (= |assert_#in~arg| 0) (= |v_ULTIMATE.start_main_~c1~0#1_BEFORE_CALL_72| 0) (<= 0 ~side2Failed_History_1~0) (<= ~side2Failed_History_1~0 1) (<= ~side2Failed_History_0~0 1) (<= 0 ~side2Failed_History_2~0) (= 2 ~active_side_History_0~0) (not (= ~side2_written~0 1)) (= |v_ULTIMATE.start_check_~tmp~3#1_69| 1) (exists ((|v_ULTIMATE.start_check_~tmp___7~0#1_95| Int) (|v_ULTIMATE.start_check_#t~ret14#1_100| Int)) (and (not (= |v_ULTIMATE.start_check_#t~ret14#1_100| 0)) (= |v_ULTIMATE.start_check_~tmp___7~0#1_95| 1) (<= 0 |v_ULTIMATE.start_check_#t~ret14#1_100|) (<= |v_ULTIMATE.start_check_#t~ret14#1_100| 1))) (exists ((|v_ULTIMATE.start_check_~tmp___8~0#1_68| Int) (|v_ULTIMATE.start_check_#t~ret15#1_75| Int)) (and (= |v_ULTIMATE.start_check_~tmp___8~0#1_68| 0) (= |v_ULTIMATE.start_check_#t~ret15#1_75| 0))) (exists ((|v_ULTIMATE.start_check_#t~ret17#1_53| Int) (|v_ULTIMATE.start_check_~tmp___6~0#1_51| Int)) (and (= |v_ULTIMATE.start_check_#t~ret17#1_53| 0) (= |v_ULTIMATE.start_check_~tmp___6~0#1_51| 0))) (<= ~side2Failed_History_2~0 1)))' at error location [2024-11-14 03:09:53,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:09:53,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:09:53,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 13] total 24 [2024-11-14 03:09:53,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359407357] [2024-11-14 03:09:53,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:09:53,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-14 03:09:53,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:09:53,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-14 03:09:53,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=7107, Unknown=0, NotChecked=0, Total=7482 [2024-11-14 03:09:53,882 INFO L87 Difference]: Start difference. First operand 21502 states and 25963 transitions. Second operand has 24 states, 24 states have (on average 8.5) internal successors, (204), 22 states have internal predecessors, (204), 10 states have call successors, (43), 5 states have call predecessors, (43), 7 states have return successors, (42), 12 states have call predecessors, (42), 10 states have call successors, (42) [2024-11-14 03:10:12,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:10:12,152 INFO L93 Difference]: Finished difference Result 60677 states and 72491 transitions. [2024-11-14 03:10:12,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-11-14 03:10:12,152 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 8.5) internal successors, (204), 22 states have internal predecessors, (204), 10 states have call successors, (43), 5 states have call predecessors, (43), 7 states have return successors, (42), 12 states have call predecessors, (42), 10 states have call successors, (42) Word has length 159 [2024-11-14 03:10:12,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:10:12,249 INFO L225 Difference]: With dead ends: 60677 [2024-11-14 03:10:12,249 INFO L226 Difference]: Without dead ends: 40428 [2024-11-14 03:10:12,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 416 SyntacticMatches, 12 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16552 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=3039, Invalid=39191, Unknown=0, NotChecked=0, Total=42230 [2024-11-14 03:10:12,279 INFO L432 NwaCegarLoop]: 735 mSDtfsCounter, 1790 mSDsluCounter, 7017 mSDsCounter, 0 mSdLazyCounter, 5005 mSolverCounterSat, 657 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1790 SdHoareTripleChecker+Valid, 7752 SdHoareTripleChecker+Invalid, 5662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 657 IncrementalHoareTripleChecker+Valid, 5005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:10:12,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1790 Valid, 7752 Invalid, 5662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [657 Valid, 5005 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-14 03:10:12,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40428 states. [2024-11-14 03:10:18,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40428 to 23929. [2024-11-14 03:10:18,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23929 states, 17429 states have (on average 1.1745940673589994) internal successors, (20472), 17714 states have internal predecessors, (20472), 4157 states have call successors, (4157), 2342 states have call predecessors, (4157), 2342 states have return successors, (4157), 3872 states have call predecessors, (4157), 4157 states have call successors, (4157) [2024-11-14 03:10:18,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23929 states to 23929 states and 28786 transitions. [2024-11-14 03:10:18,471 INFO L78 Accepts]: Start accepts. Automaton has 23929 states and 28786 transitions. Word has length 159 [2024-11-14 03:10:18,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:10:18,471 INFO L471 AbstractCegarLoop]: Abstraction has 23929 states and 28786 transitions. [2024-11-14 03:10:18,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.5) internal successors, (204), 22 states have internal predecessors, (204), 10 states have call successors, (43), 5 states have call predecessors, (43), 7 states have return successors, (42), 12 states have call predecessors, (42), 10 states have call successors, (42) [2024-11-14 03:10:18,472 INFO L276 IsEmpty]: Start isEmpty. Operand 23929 states and 28786 transitions. [2024-11-14 03:10:18,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-14 03:10:18,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:10:18,484 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:10:18,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-14 03:10:18,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:10:18,685 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:10:18,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:10:18,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1521485796, now seen corresponding path program 1 times [2024-11-14 03:10:18,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:10:18,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928045642] [2024-11-14 03:10:18,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:10:18,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:10:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:10:19,746 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 25 proven. 7 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-14 03:10:19,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:10:19,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928045642] [2024-11-14 03:10:19,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928045642] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:10:19,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567991937] [2024-11-14 03:10:19,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:10:19,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:10:19,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:10:19,749 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:10:19,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b433fc8c-e955-484b-a017-843ac92c3759/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-14 03:10:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:10:19,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-14 03:10:19,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:10:20,630 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 31 proven. 55 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-14 03:10:20,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:10:21,531 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 19 proven. 17 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-14 03:10:21,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567991937] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:10:21,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1109036908] [2024-11-14 03:10:21,533 INFO L159 IcfgInterpreter]: Started Sifa with 86 locations of interest [2024-11-14 03:10:21,533 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:10:21,534 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:10:21,534 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:10:21,534 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs